K Barad Posted March 6, 2023 Share Posted March 6, 2023 I have an Aria Sinsonido electric bass guitar. It's a real rare beauty, headless, fretless and body less (yes, really) and as far as I know it is one of only a few hundred made and I had it specially imported so may be one of very few in UK Sadly it's having problems with the electrics, the tone control for the active pickup doesn't work and is stuck on clangu rather than the smooth soft near sinusoidal sound I love in a bass. Being so rare though the local repair shop has no clue where to start, and I don't know where to get support. I'm hoping that if I can find the circuit diagram or a specialist and see if I can replace the damaged part (if it's just the vari cap) or even (gulp) try and get a whole new PCB made for it locally This is a unique bass and while probably not the greatest in truth, it's been with me in hundreds of concerts in my youth and it's practically a horcrux by now! Quote Link to comment Share on other sites More sharing options...
Woodinblack Posted March 6, 2023 Share Posted March 6, 2023 They aren't that rare (unless there is something odd about yours). I played one at my local guitar shop, and seen another couple. it would be hard to get a circuit as aria don put them out although there is the thread here https://www.soundonsound.com/forum/viewtopic.php?t=61857 where it shows it should be a reasonable easy thing to diagnose if you do electronics Quote Link to comment Share on other sites More sharing options...
lemmywinks Posted March 7, 2023 Share Posted March 7, 2023 The preamp in mine went years ago, unfortunately the little mics inside the bridge assembly are active and need to be powered so you can't just put a different preamp in, I made a new bridge with an undersaddle piezo strip (you can repurpose a cheap acoustic bass bridge for this) and have married that to a few different standard preamps. That's probably the most cost effective and future proof method of getting one of these back to working condition, several people had problems with the preamps IIRC. When mine failed I contacted Aria and Soloette who licensed their twin condenser mic design to Aria for the Sinsonido, the former were useless (think they're just a sales team over here really) and the latter were very helpful but as the preamp design is Aria's they couldn't really do much. Nice people though. They aren't rare btw, they were a production bass and went through several design changes (different body styles and number of body wings), seen plenty of fretted/fretless ones over the years and if you wait a while one will turn up for sale although prices (for the basses anyway) are a lot higher than they once were - they were around £200-£250 when I bought mine. The guitar versions are still going for around £200 on eBay. Quote Link to comment Share on other sites More sharing options...
warwickhunt Posted March 7, 2023 Share Posted March 7, 2023 As others have said, not mega rare (I also have one) and they pop up for sale on a regular basis. Great if you can get it sorted for not a lot of money but don't go spending a lot of money flogging a dead horse... buy another one! Quote Link to comment Share on other sites More sharing options...
sandy_r Posted August 17, 2023 Share Posted August 17, 2023 (edited) On 06/03/2023 at 17:01, K Barad said: I have an Aria Sinsonido electric bass guitar. ... Sadly it's having problems with the electrics, the tone control for the active pickup doesn't work and is stuck on clangu rather than the smooth soft near sinusoidal sound I love in a bass. hi KB (and fellow Sinsonido owner?) I wonder if you're still looking for assistance with that Sinsonido preamp - if so, i might be able to help... It appears that their original (at least) preamps were a load of Carp (instead of Bass?): i've seen many reports now, of people looking for replacement/repairs; i bought my Sinsonido second-hand, and i'm guessing that it was being sold due to the Tone & Volume controls emitting rather fetching electronic fart noises over most of the control range The preamp circuit was problematical from 2 additional points of view:- a) it used a (possibly bespoke) IC; b) it acted as both a preamp and headphone amp; c) it chewed through batteries like a Gremlin (10-20mA current drain) ...er, so that's 3 additional points of view... There didn't seem to be any help coming from the Aria direction, other than, for some, replacing the board (...and who wants to have one flaky-design board replaced with similar?) Soooo - i decided to scrap their board and build my own (blind faith, or what?!?) Anyway, i've managed to come up with a handy single-JFET arrangement which can power and balance the 2 bridge-mics, preset the gain, and add volume and tone, centred around the range of the bass. It sounds good - and the battery drain has dropped to a few mA (i use rechargeables). Goodbye to funky farting noises (well, ok, goodbye just from the preamp) i should point out that this is just a preamp, it doesn't drive headphones (i use a separate small battery headphone-amp to mix the bass with an MP3/CD i/p) Hoping i can attach the schematic & photos here - i'm a (wrinkly) noob here, so be gentle with me ...er, yes, well... Edited August 17, 2023 by sandy_r ...forgot stuff ! 4 1 Quote Link to comment Share on other sites More sharing options...
lemmywinks Posted August 17, 2023 Share Posted August 17, 2023 2 hours ago, sandy_r said: hi KB (and fellow Sinsonido owner?) I wonder if you're still looking for assistance with that Sinsonido preamp - if so, i might be able to help... It appears that their original (at least) preamps were a load of Carp (instead of Bass?): i've seen many reports now, of people looking for replacement/repairs; i bought my Sinsonido second-hand, and i'm guessing that it was being sold due to the Tone & Volume controls emitting rather fetching electronic fart noises over most of the control range The preamp circuit was problematical from 2 additional points of view:- a) it used a (possibly bespoke) IC; b) it acted as both a preamp and headphone amp; c) it chewed through batteries like a Gremlin (10-20mA current drain) ...er, so that's 3 additional points of view... There didn't seem to be any help coming from the Aria direction, other than, for some, replacing the board (...and who wants to have one flaky-design board replaced with similar?) Soooo - i decided to scrap their board and build my own (blind faith, or what?!?) Anyway, i've managed to come up with a handy single-JFET arrangement which can power and balance the 2 bridge-mics, preset the gain, and add volume and tone, centred around the range of the bass. It sounds good - and the battery drain has dropped to a few mA (i use rechargeables). Goodbye to funky farting noises (well, ok, goodbye just from the preamp) i should point out that this is just a preamp, it doesn't drive headphones (i use a separate small battery headphone-amp to mix the bass with an MP3/CD i/p) Hoping i can attach the schematic & photos here - i'm a (wrinkly) noob here, so be gentle with me ...er, yes, well... Did you use the original stereo condenser mic bridge tube arrangement or replace it with a piezo strip? When I spoke to Soloette who designed that pickup they said it needed to be powered so hooking up a conventional preamp wouldn't yield great results. I'm about to trail my Sinsonido with a piezo preamp from AnalogWorkshop.eu, just waiting for it to arrive! Quote Link to comment Share on other sites More sharing options...
sandy_r Posted August 17, 2023 Share Posted August 17, 2023 (edited) hi, yes i kept the original mics in place, and used them as input to the preamp On the schematic (mics on the left), there's a 10k resistor from the positive rail to each mic. This acts as both a load resistor and a power source to its mic The 2 mics are then each isolated DC-wise from the circuit, by a 0.1uF capacitor. This resistor/capacitor arrangement, with a DC voltage source, is common practice for connecting this sort of mic insert to a regular preamp input There's a 500k trim pot in series with the output of 1 mic, and 47k with the 2nd. This allows the outputs from the 2 mics to be balanced for relative level, as their signals mix at the JFET The 5k trim pot acts as the gain control for this stage (set and forget) The Volume and Tone controls need to be physically small to fit in the preamp cavity (the original controls were tiny IIRC) - I seem to remember having to increase the mounting hole diameters somewhat Hope this helps - feel free to ask away PS I recently tried to mount a piezo strip under the bridge of my DIY bass build and was very disappointed to find almost no audible signal output - I presumed this was due to the very intense compression of the bridge onto the body, and almost total lack of body vibration (1.5" solid mahogany!). I live and learn! 😞 Edited August 18, 2023 by sandy_r 1 1 Quote Link to comment Share on other sites More sharing options...
lemmywinks Posted August 17, 2023 Share Posted August 17, 2023 2 hours ago, sandy_r said: hi, yes i kept the original mics in place, and used them as input to the preamp On the schematic (mics on the left), there's a 10k resistor from the positive rail to each mic. This acts as both a load resistor and a power source to its mic The 2 mics are then each isolated DC-wise from the circuit, by a 0.1uF capacitor. This resistor/capacitor arrangement, with a DC voltage source, is common practice for connecting this sort of mic insert to a regular preamp input There's a 500k trim pot in series with the ouput of 1 mic, and 47k with the 2nd. This allows the outputs from the 2 mics to be balanced for relative level, as their signals mix at the JFET The 5k trim pot acts as the gain control for this stage (set and forget) The Volume and Tone controls need to be physically small to fit in the preamp cavity (the original controls were tiny IIRC) - I seem to remember having to increase the mounting hole diameters somewhat Hope this helps - feel free to ask away PS I recently tried to mount a piezo strip under the bridge of my DIY bass build and was very disappointed to find almost no audible signal output - I presumed this was due to the very intense compression of the bridge onto the body, and almost total lack of body vibration (1.5" solid mahogany!). I live and learn! 😞 Ah excellent, thanks. I have a piezo strip in there at the moment and it works pretty well but I'm using a traditional acoustic type bridge. I always run mine through a Fishman Platinum Stage when plugging in so the preamp is just a buffer really. 1 Quote Link to comment Share on other sites More sharing options...
sandy_r Posted August 17, 2023 Share Posted August 17, 2023 3 minutes ago, lemmywinks said: I have a piezo strip in there at the moment and it works pretty well but I'm using a traditional acoustic type bridge. I always run mine through a Fishman Platinum Stage when plugging in so the preamp is just a buffer really. Sounds like a good setup - it's good to know about other options if/when the mics fail The Fishman range seems to have some great options for acoustic-oriented audio - well-featured and good quality. A nice match for Sinsonido support I hope your awaited delivery meets expectations 👍 1 Quote Link to comment Share on other sites More sharing options...
lemmywinks Posted August 17, 2023 Share Posted August 17, 2023 2 minutes ago, sandy_r said: Sounds like a good setup - it's good to know about other options if/when the mics fail The Fishman range seems to have some great options for acoustic-oriented audio - well-featured and good quality. A nice match for Sinsonido support I hope your awaited delivery meets expectations 👍 I have the Platinum Pro and Stage, they're excellent for electric and acoustic. Prices have gone wild in the last year or so though. 1 Quote Link to comment Share on other sites More sharing options...
lemmywinks Posted August 30, 2023 Share Posted August 30, 2023 (edited) Got the preamp from https://analogworkshop.eu/ installed this afternoon on my piezo equipped SInsonido, I bought this one: https://analogworkshop.eu/products/piezo-preamp/ However the person I spoke to said this might be more suitable: https://analogworkshop.eu/products/fet-acoustic-vol-tone/ Both are £40 + £5 p&p. It comes prewired with PCB connectors, vol/tone pots, a battery clip and a stereo jack. I would recommend buying an extra 2 pin PCB connector as you'll probably want to connect your existing battery clip wires to the 9v+ and jack switch to make sure it doesn't constantly drain your battery. It sounds excellent in the SInsonido, tbh I think with the tone knob almost rolled off (to get rid of that piezo scratch/clank) it sounds much better than it did in its stock form. It's very clean and transparent which is my type of preamp, that's just straight into the desk as well without even putting it through my Fishman Platinum. If you want to get rid of the troublesome mic/pre in the Sinsonido this is a very good option that's easy to install. The downside is that mine came with a notched volume knob that is about 0.3mm wider than standard so doesn't fit my knobs, I assume this is an error and have contacted the supplier. Edited August 30, 2023 by lemmywinks 1 Quote Link to comment Share on other sites More sharing options...
sandy_r Posted August 30, 2023 Share Posted August 30, 2023 27 minutes ago, lemmywinks said: Got the preamp from https://analogworkshop.eu/ installed this afternoon on my piezo equipped SInsonido, I bought this one: https://analogworkshop.eu/products/piezo-preamp/ However the person I spoke to said this might be more suitable: https://analogworkshop.eu/products/fet-acoustic-vol-tone/ Both are £40 + £5 p&p. ... It sounds excellent in the SInsonido, tbh I think with the tone knob almost rolled off (to get rid of that piezo scratch/clank) it sounds much better than it did in its stock form. It's very clean and transparent which is my type of preamp, that's just straight into the desk as well without even putting it through my Fishman Platinum. If you want to get rid of the troublesome mic/pre in the Sinsonido this is a very good option that's easy to install. ... Great! Glad your Sinsonido is back to good health, preamp-wise If you've replaced the original bridge-mics with a piezo, I would have thought that you've bought the optimal choice - anyway, it's down to how it sounds and performs for you that matters. Good result! The problem on mine was due to the failed preamp circuit, so I left the bridge-mics in place and substituted my own circuit which has fixed the problem and provides smooth control of Vol & Tone Yes, the variety of different 'standards' for potentiometer shaft fixings is annoying I didn't like the plastic control knobs supplied with the Sinsonido, so I ordered some black anodized aluminium knobs which are still in keeping with the general design, but look and feel more classy. They have grub-screws with plenty of adjustment, so they've fitted fine with the thicker shanks on the new controls which I've used: I hope you're able to get some good sounds out with your piezo & its new preamp - happy gigging! 2 Quote Link to comment Share on other sites More sharing options...
lemmywinks Posted August 30, 2023 Share Posted August 30, 2023 (edited) 1 hour ago, sandy_r said: Great! Glad your Sinsonido is back to good health, preamp-wise If you've replaced the original bridge-mics with a piezo, I would have thought that you've bought the optimal choice - anyway, it's down to how it sounds and performs for you that matters. Good result! The problem on mine was due to the failed preamp circuit, so I left the bridge-mics in place and substituted my own circuit which has fixed the problem and provides smooth control of Vol & Tone Yes, the variety of different 'standards' for potentiometer shaft fixings is annoying I didn't like the plastic control knobs supplied with the Sinsonido, so I ordered some black anodized aluminium knobs which are still in keeping with the general design, but look and feel more classy. They have grub-screws with plenty of adjustment, so they've fitted fine with the thicker shanks on the new controls which I've used: I hope you're able to get some good sounds out with your piezo & its new preamp - happy gigging! I just wish there was a proper drop in replacement, as it stands you either have to do some woodwork or build a preamp if your electronics fail! Edited August 30, 2023 by lemmywinks 1 Quote Link to comment Share on other sites More sharing options...
GetFletch Posted October 5, 2023 Share Posted October 5, 2023 On 17/08/2023 at 14:14, sandy_r said: hi KB (and fellow Sinsonido owner?) I wonder if you're still looking for assistance with that Sinsonido preamp - if so, i might be able to help... It appears that their original (at least) preamps were a load of Carp (instead of Bass?): i've seen many reports now, of people looking for replacement/repairs; i bought my Sinsonido second-hand, and i'm guessing that it was being sold due to the Tone & Volume controls emitting rather fetching electronic fart noises over most of the control range The preamp circuit was problematical from 2 additional points of view:- a) it used a (possibly bespoke) IC; b) it acted as both a preamp and headphone amp; c) it chewed through batteries like a Gremlin (10-20mA current drain) ...er, so that's 3 additional points of view... There didn't seem to be any help coming from the Aria direction, other than, for some, replacing the board (...and who wants to have one flaky-design board replaced with similar?) Soooo - i decided to scrap their board and build my own (blind faith, or what?!?) Anyway, i've managed to come up with a handy single-JFET arrangement which can power and balance the 2 bridge-mics, preset the gain, and add volume and tone, centred around the range of the bass. It sounds good - and the battery drain has dropped to a few mA (i use rechargeables). Goodbye to funky farting noises (well, ok, goodbye just from the preamp) i should point out that this is just a preamp, it doesn't drive headphones (i use a separate small battery headphone-amp to mix the bass with an MP3/CD i/p) Hoping i can attach the schematic & photos here - i'm a (wrinkly) noob here, so be gentle with me ...er, yes, well... Hi Sandy_R - do you offer a repair service? I would really like to get the electronics sorted on my Aria Sinonido Frettless Bass. Profit costs covered, onviously! BTW - coincedently, I saw this video on Charlie Chandlers FaceBook page: https://www.facebook.com/charliechandlersguitarexperience/videos/erik-plays-an-aria-sinsonido-fretless-travel-bass-guitarexperience-charliechandl/1018248952450367/ Quote Link to comment Share on other sites More sharing options...
sandy_r Posted October 5, 2023 Share Posted October 5, 2023 (edited) 16 hours ago, GetFletch said: Hi Sandy_R - do you offer a repair service? I would really like to get the electronics sorted on my Aria Sinonido Frettless Bass. Profit costs covered, onviously! BTW - coincedently, I saw this video on Charlie Chandlers FaceBook page: https://www.facebook.com/charliechandlersguitarexperience/videos/erik-plays-an-aria-sinsonido-fretless-travel-bass-guitarexperience-charliechandl/1018248952450367/ hi Fletch (?) I'd be happy to help out if I can - I have a couple of questions: - are you looking for a repair of the existing Sinsonido PCB, or a copy of my own replacement circuit (FET vol/tone pre using both sensors, mono, no phones)?; - what's your approx timescale? I could make a copy of my own circuit, test it on my Sinsonido and send it out (all just at cost - simple circuit, light weight); I can't undertake to repair a Sinsonido PCB - but I believe there is a thread either on TB or S*und*nS*und where someone has managed to replace the duff part(s) and get the PCB operational again (repairer also posted the schematic) I am actively sourcing & building a rack-based preamp for myself at present - it's likely to keep me occupied into the long dark tea-time of the Solstice, but I may well welcome a break, if I make good progress If it is my circuit you'd like built, and my availability is an issue, I'd be happy for you to get a tech-skilled friend to just use my circuit and build it instead let me know what you decide The video from Charlie Chandler's FB sounds good - string noise suggests roundwound strings, which seems unusual on fretless. After I get my first Bass Bash out of the way, this weekend, I'll try to upload a short audio clip of my Sinsonido here, for comparison Cheers Edited October 6, 2023 by sandy_r Quote Link to comment Share on other sites More sharing options...
sandy_r Posted October 5, 2023 Share Posted October 5, 2023 (edited) On 05/10/2023 at 17:27, sandy_r said: ...I'll try to upload a short audio clip of my Sinsonido here, for comparison... ...headphones recommended... Tone: flat (no cut) FET-Vmid-Tflat-PBPflat.mp3 Tone: max treble cut FET-Vmid-bass-PBPflat.mp3 Tone: max bass cut FET-Vmid-Ttreble-PBPflat.mp3 my Sinsonido with DIY replacement onboard preamp (JFET buffer amplifier, 2 original sensor i/p, Vol to mid), recorded via Palmer Pocket Bass preamp, EQ flat, no effects, direct into Samsung Tablet. Groundwound strings, plucked with side of index finger Excuse hurried recording and wayward playing! Edited November 5, 2023 by sandy_r 1 Quote Link to comment Share on other sites More sharing options...
Aalin Posted October 6, 2023 Share Posted October 6, 2023 If i understand correctly, your preamp bypass the original one, and is not added to the original one ? You do not keep the original one ? Thank’s for your answer. Quote Link to comment Share on other sites More sharing options...
sandy_r Posted October 6, 2023 Share Posted October 6, 2023 47 minutes ago, Aalin said: If i understand correctly, your preamp bypass the original one, and is not added to the original one ? You do not keep the original one ? Thank’s for your answer. salut Aalin yes, that is correct - I completely removed the original PCB, including 2 potentiometers, and replaced with my circuit (shown above) + 2 new potentiometers. The 2 electret microphone sensors in the bridge, and the switched jack socket are also still the original parts. My new PCB fits the original cavity ok, however, I had to slightly increase the diameter of the holes for the new potentiometers because the original ones were smaller than usual control size. You can see in the earlier photo that my new controls still fit ok in the side recess of the guitar Do you have a Sinsonido bass? If so, fretless, or fretted? ...and any problems with the PCB? Quote Link to comment Share on other sites More sharing options...
Aalin Posted October 6, 2023 Share Posted October 6, 2023 Salut Monsieur Sandy 😀 Yes, I have a Sinsonido Fretless bass I bought in UK, I love it and may be would like to make it my regular bass for giging, So light. And … Yes, I have problems with the PCB 😀 - First of all, I have a muddy sound that oblige me to use a High pass filter at full conter clockwise at 140 Hz, cuting every things below. I don't think it is the same problem that K Barad ahd others explain. my tone control works, bringing a lot of treeble if I want, but the muddy stays if not using a HPS. - Second, the output level is too much, cranking the amp. The same jack for headphone and amp is not a good idea. Fortunately, the HPF I use solve that problem. It's a Francis Deck one: https://sites.google.com/site/hpftechllc/home/hpf-pre - To end, the jack is a bit old. I search for replacing it, here is a picture of it; I found some ideas at Thoman but not sure they are the same. If someone could have some links to buy the same as original one, thank's by advance. Or if someone has the shema of the new Sinsonido with two jacks, one for headphones, one for the amp, that would help me to understand the connection. - And to end again, but that's not a problem, I love so much this bass and was a bit afraid it stop working when giging, that I bought a Lace Sensor Pickup but not yet fixed it, just a tried it to hear. It words, giving me a sort of jazz bass sound. A spare pick up in case of. Links for the jacks I found: 1 https://www.thomann.de/gb/tad_jack_socket_stereo_114bpc.htm?shp=eyJjb3VudHJ5IjoiZ2IiLCJjdXJyZW5jeSI6NCwibGFuZ3VhZ2UiOjJ9&reload=1 2 https://www.thomann.de/gb/neutrik_nj_5_fdv.htm?shp=eyJjb3VudHJ5IjoiZ2IiLCJjdXJyZW5jeSI6NCwibGFuZ3VhZ2UiOjJ9&reload=1 Link to the Lace Sensor pickup https://www.thomann.de/gb/lace_pickups_ultra_slim_bass_pickup_usab.htm?shp=eyJjb3VudHJ5IjoiZ2IiLCJjdXJyZW5jeSI6NCwibGFuZ3VhZ2UiOjJ9&reload=1 Picture of my actual jack below Thanks to every one to have reading me and could help me. Special thank's to Monsieur Sandy. Alain Quote Link to comment Share on other sites More sharing options...
sandy_r Posted October 6, 2023 Share Posted October 6, 2023 59 minutes ago, Aalin said: - To end, the jack is a bit old. I search for replacing it, here is a picture of it; I found some ideas at Thoman but not sure they are the same. If someone could have some links to buy the same as original one, thank's by advance. Or if someone has the shema of the new Sinsonido with two jacks, one for headphones, one for the amp, that would help me to understand the connection. ... Links for the jacks I found: 1 https://www.thomann.de/gb/tad_jack_socket_stereo_114bpc.htm?shp=eyJjb3VudHJ5IjoiZ2IiLCJjdXJyZW5jeSI6NCwibGFuZ3VhZ2UiOjJ9&reload=1 ... Picture of my actual jack below ... hi Alain, sorry to hear that you have noise/muddy signal problems with your Sinsonido. I agree it is a great bass - for gigs, practice, and transporting. So it is definitely worth fixing the problems/issues I think that a lot of its good sound is because it uses acoustic pickups in the bridge, rather than the usual mag pickups, so it would be a shame to lose the original sound - but adding extra pickup(s) can give you more choice of sound First, about jack sockets, yes, I think that Thomann link is ok for a replacement jack. The Sinsonido needs a stereo output (1 shield + 2 signal pins) plus it also needs 2 pins to switch the battery (so these 2 can be separate from shield and signal pins) That Thomann jack is sold a replacement for Fender guitars with a stereo o/p + battery switching - other shops sell a similar jack but 2x...15x the price! I agree that Aria should not have combined the headphone output with the bass output - but I understand that they wanted to combine the battery switching into just 1 jack Adding a separate (mini) jack for phones would not be a very complex change to the circuit, but it might need an extra mini toggle switch for the battery if a similar switching stereo mini jack is not used. Small headphone amplifiers are much more easy to find now, so I think Aria would not use this design again if they were making this guitar today ok, i'll end this answer now and then see if I can comment on your other points later (and other BCers may answer also) Quote Link to comment Share on other sites More sharing options...
Aalin Posted October 6, 2023 Share Posted October 6, 2023 Hi Sandy Thank’s for your answer. The Lace sensor pickup I bought is a spare pickup in case of the electret will stop working during a gig. Like a car spare wheel. No more. I agree it would be a shame to loose the acoustic pickup. And I should add that the idea of putting electret pickup instead of piezo is really a good idea that some company should work, cause it bring a different sound compare to the piezo. Reayly more Hifi sound . Bus as no company offers those pickup in their bass, there is no many preamp in the market that will work to change it. Great to hear that Thomann ’S jack will work. Thank’s for that Sandy. I asked for a shema of the two jack, it was just to be abble to understand how the original works, cause there is maybe 8 pins on it, I was lost to understand how it works . Also, what I don’t understand is that, when you plug a mono jack, on channel goes to the ground, not working. First, could it be bad for the preamp, second I checked the difference in sound between a headphone and a jack. First, The headphone is stéréo (I think that there is one pickup upon the other, not left and right, the stereo effect is like if you could hear let’s say a king of 3D). Second, when plugging a stereo jack there is more bass on the sound. I tried to split the 2 channel in one mono, making a special cable: stéréo to mono. That brings me more bass, but I ‘m not sure I like the sound better that mono to mono. I don’t mind for a headphone jack, not playing with it, only amps. Monday, I’ll post some sound of my Sinso to make you hear the muddy sound and the cranking one to know if some of you have also the same problems than me or not, to go further in the discussion we have about the Sinsonido. Thank’s to have red my long long writing. 😀 Sandy, does your bass is fretless or not ? I couldn’t say , hearing the demo. Quote Link to comment Share on other sites More sharing options...
sandy_r Posted October 6, 2023 Share Posted October 6, 2023 (edited) Ok, yep, i understand your backup plan (and good forward thinking, cause i've always just assumed that my electrets will be ok throughout many gigs). The Lace looks good and gets some good reviews ...there are some much less expensive mag pickups in wooden covers which also look cool, but the ones i've seen so far are for round-hole acoustic guitars, so can only be taped (double-sided) to a bass, without some woodwork Ah, interesting you should mention trying stereo leads - i was just thinking earlier exactly the same thing about the difference in PCB operation between phones and guitar. Yes - you've found another issue with their design: phones work exactly as expected, but if you use a mono guitar lead then you are losing 1/2 the audio from the bridge (in your case, you lose the more bass-side mic !) I don't think that shorting one channel of the PCB stereo output will cause a problem for the IC - its designed to work with speakers and a range of headphone impedances (it already has a series 10 ohm resistor inline with each output) but i wouldn't choose that approach in my 'designs' More serious, you are losing an important part of the signal from the strings! BTW i'm not sure if you know there are no separate connections for the phones on the output jack - the phones really do just use the same outout wires as the guitar. The separate phone mini jack in some later versions is probably connected in parallel to the stereo outputs to the guitar, but through slightly bigger value resistors My circuit just drives a mono output to guitar amp (the 2 mic signals are mixed by the FET, so it always provides the full o/p from the bridge) - i haven't missed having phones o/p at all (i use a small battery portable amp with stereo in, bass mix, and phones out, about the size of a regular pedal) Do you solder stuff? If so, you could try using a stereo jack plug on the guitar end of a mono lead, and wiring the Tip and Ring together inside that jack plug - this should give you a combined signal from both electrets in the bridge (a slightly 'better' way would be to solder 2x47 ohm resistors, if you have some, one resistor to Tip, the other to Ring, and joined together at the mono signal wire to the amp) Who knows - it might even reduce the muddy, cranked signal?!? Sheesh, i'd never realised this problem on the original circuit before you asked questions about the phones - you'd make a great detective! ok - i think that's all the brain work i can manage for now (but feel free to discuss or ask some more) a bientot Edited October 6, 2023 by sandy_r Quote Link to comment Share on other sites More sharing options...
Aalin Posted October 6, 2023 Share Posted October 6, 2023 Hi Sandy, still … again … 😀😀 The Lace sensor is the only one pickup to be so thin that it can be put under the strings: .375 », 0,95 cm. About the replacement jack from Thomann you suggest witch one it is ? probably the first one. https://www.thomann.de/gb/tad_jack_socket_stereo_114bpc.htm?shp=eyJjb3VudHJ5IjoiZ2IiLCJjdXJyZW5jeSI6NCwibGFuZ3VhZ2UiOjJ9&reload=1 Not this one ? https://www.thomann.de/gb/neutrik_nj_5_fdv.htm?shp=eyJjb3VudHJ5IjoiZ2IiLCJjdXJyZW5jeSI6NCwibGFuZ3VhZ2UiOjJ9&reload=1 Thank’s for your answer. Yes, I solder. I did the cable one side in stereo, the other to mono, but I want to explore the idea of the 47 ohms resistor, witch seems a good idea, and that could solve the muddy problem. I will come back to you monday, because I’m a little busy this week end, with some sound and asking for some explanations of how to put the 47 resistor. Have a nice week end and thank’s for every things. Hope our discussion will interest others sinsonido bass players. Quote Link to comment Share on other sites More sharing options...
sandy_r Posted October 6, 2023 Share Posted October 6, 2023 1 minute ago, Aalin said: Hi Sandy, still … again … 😀😀 The Lace sensor is the only one pickup to be so thin that it can be put under the strings: .375 », 0,95 cm. About the replacement jack from Thomann you suggest witch one it is ? probably the first one. https://www.thomann.de/gb/tad_jack_socket_stereo_114bpc.htm?shp=eyJjb3VudHJ5IjoiZ2IiLCJjdXJyZW5jeSI6NCwibGFuZ3VhZ2UiOjJ9&reload=1 Not this one ? https://www.thomann.de/gb/neutrik_nj_5_fdv.htm?shp=eyJjb3VudHJ5IjoiZ2IiLCJjdXJyZW5jeSI6NCwibGFuZ3VhZ2UiOjJ9&reload=1 Thank’s for your answer. Yes, I solder. I did the cable one side in stereo, the other to mono, but I want to explore the idea of the 47 ohms resistor, witch seems a good idea, and that could solve the muddy problem. I will come back to you monday, because I’m a little busy this week end, with some sound and asking for some explanations of how to put the 47 resistor. Have a nice week end and thank’s for every things. Hope our discussion will interest others sinsonido bass players. Yep, the TAD jack should be ok for your bass 👍 apologies, i missed some detail in your earlier post - you had already tried a stereo to mono connection ...but the 47 ohm 'mixer' may be more gentle on the bass IC, so that will be good to try next week have a good weekend! oops, i forgot - my Sinsonido is fretless (but i was playing a sort of non-fretless riff in the recordings) Quote Link to comment Share on other sites More sharing options...
sandy_r Posted October 6, 2023 Share Posted October 6, 2023 1 hour ago, Aalin said: ... Yes, I solder. I did the cable one side in stereo, the other to mono, but I want to explore the idea of the 47 ohms resistor, witch seems a good idea, and that could solve the muddy problem.... I will come back to you monday, because I’m a little busy this week end... ...just posting this for next week... Quote Link to comment Share on other sites More sharing options...
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