Chienmortbb

On 29/07/2019 at 15:21, EBS_freak said:

Very much agreed - all sound is subjective. If it sounds good to you, it's right. Of course, many other people may disagree... but that's why there's different audio equipment, different instruments yiddah yaddah.

Interesting comment about being built for one person and it's only their view that matters? That's not a particular wise move if you are looking at shifting units! Still, there's probably enough GB fans who could potentially take an interest.

Also people, it's worth noting that the class D thing is actually quite a big market in the UK - but outside of these boundaries, especially in Europe, the rockers all gravitate towards big lumps of iron in their amps as opposed to class D and lightweight.

Wrong thread I know but I have been to gigs where it seems the kick is set up first (. Close to using up all the headroom) on its own it sounds great. Once the band plays is obliterates not only the bass guitar but everything else. Are they taught this, are their ears shot ( soon will be) or is it that they have never been trained. 

I agree that an HPF is a very useful addition to a bassists arsenal. In my opinion many can be set too low. If you model a speaker in WINisd then put a forth order filter on, based around 35HZ it makes almost no difference to the output but reduces the work the speaker ( amp amp of course) does considerably. 

I would agree Phil although some of the Chinese stuff at B&Q I have seen recently is poor quality. 

On 15/07/2019 at 09:27, Houndogg said:

...... but at the gig yesterday the sound engineer was knocked off the wifi from laptop to pa due to the Xvive and had to reboot her system - 😳 So I had to use a gtr lead 😉

Our guitarist used a cheap wireless system the keeps knocking our the signal for the Behringe Air mixer. It is quite happy with my Smoothound. 

On 24/07/2019 at 11:44, uk_lefty said:

No, they're a dead easy one handed lift for the 1x15 and the 2x10 so I imagine the 1x12 is lighter still. Ashdown will have the weight of them on their website.

The RM112 is very light. Around 13Kg if i remember rightly. 

The delay will be due to the Dorset’s not being connected for a few seconds while the power supply settles down.

I am not familiar with the model but can you take some hi res pictures of the inside and paste them on here?

To be honest power in the UK is fairly clean. Your DI should be able to reject any power noise. 

On 13/05/2019 at 13:17, Count Bassy said:

Well, yes it does - doubly digital! But seriously, unless it's a dimmer, then it is, to my mind at least, a digital device!

 

No dimmers use a technique similar to PWM as used in Class D Amplifiers. 

The first answer is correct it’s a number of nominally 8 ohm abs are closer to 6 ohm, the 2 ohm setting might be better.

Chris Squire for me. First bassist that made the bass more than a rhythm instrument. 

On 15/07/2019 at 19:12, basstone said:

It's Looking good and a similar concept that I had in mind, even down to the same power amp module. My only proposed addition would be to consider either phantom power on the balanced input or a DC out to power the effect pedal. Thus removing the need for either batteries or an additional power brick.? Any thoughts?

It can be done but both add complication. Pedal supply would be a 9V regulator and the aux supplies on the 125ASX2 has a limited current draw, 350mA if I remember rightly.  This is not even enough to power a Zoom B1 ON or B1 Four let alone a Helix. The HX Stomp needs 3A at 9V.

I could run the pre-amp supplies at +/-9V to simplify matters but that would reduce the headroom in the preamp. I have assembled a fixed voltage +/- 15VPSU for the preamps 

Phantom Power could be put in the final unit but for the prototype I want to prove the concept soI am keeping it simple. 

Personal natters are keeping me from the project at the moment but it is progressing if more slowly than I had hoped.

13 hours ago, EBS_freak said:

Remember - playing recorded music through a PA isn’t representative of a band playing through it. One has been through compressors/limiters/mastering... the other... not. You can apply some processing - but not like a studio.

So true. I have lost count of the times I have heard recorded music through a PA sounding good/OK then the sound is poor when the band come on. 

Well trace are no longer, they were bought by Gibson the sold to Peavey years ago. 

Post a pictures of the problem and some of us will try to help. 

On 18/06/2019 at 17:14, Telebass said:

Normal service resumed...

Sounds good! Didn't appear to like the Smoothhound much, bit poppy and crackly. Perfect on cable. Cracking little amp!

@obbm's cable is a work of art, and looks capable of carrying the National Grid. The cable is well over 1cm in diameter, and the jack is enourmous! Well done, that man!

Edit: cable resistance 4.5 ohms per kilometre? That means the2x 0.75m conductors in this cable have about, well, no resistance. Wow.

Picture please?

Of course to make it really aged you would now need to remove the pickup cover and ashtray bridge cover. 😇

Nice job and I love the blue. On another matter, where did you get the headstock decal?

Input board populated, 

The best laid plans.., I ordered some connectors  for the two smaller boards but stupidly ordered the wrong pitch. Of course I would have needed a crimp tool  too and in the end I decided to use some PCB  terminal blocks. They are on order along with some 30mm hex standoffs. The wrong connectors will go on EBay.

The standoffs are to mount the power amp module on to an aluminium sheet to add extra heat sinking. Pictures to follow. 

The input board is now populated and soldered. Just output board to populate and solder the output board.  

On 28/06/2019 at 18:58, Bill Fitzmaurice said:

I guess they'll do, it just seems like the barrel size is small for speaker cable.

That jack socket is rated at 10 amps so will be OK. The plug rating is dependant on the mating socket so will be determined by the quality of the jacks Mesa use.

8 hours ago, LewisK1975 said:

 

 

Yep - Done this on a few Basses.  I also suffer from OCD flare-ups when it comes to string alignment..

Its OK to be OCD about string alignment along the neck but it does not matter if tye strings are not exactly in line with, or exactly between, the pole pieces on the pick-ups.

5 hours ago, Boombox DC said:

I have TCE BH 250 and love it, mostly because it has a built in tuner that’s always on - one less thing to remember.  I ignore the tone print.  I’m baffled why more amps, especially these tiny heads, don’t have built in tuners?  And why TCE new line doesn’t have them anymore?  Any thoughts?   And yes, I have the TCE Clíp on too but prefer to have it built in.   I use the GK112MBX CAB, mostly because it’s 16 lbs and easy to carry around with the GK bag. 

I have to say that I prefer the tuner on the floor in front of me. 

I have heard the noise occasionally. I will investigate further and report back.

Yes no problem at all here. Power to die for and plenty of tonal variation. 

That is the lid of a die cast aluminium box. The connectors and controls will be mounted on the base of the box. I did it this way as the base is flatter than the lid and so easier to get a good seal. 

I have finished soldering the parts to the power supply board. Next on to the Input board. 

The PCB shown below has a space for a bridge rectifier and another large electrolytic capacitor on each rail but they are not needed with the ICEPower module’s dc aux power  outputs. As there is more space,I have laid the caps down and fixed them with cable ties. I had to drill the holes for the cable ties but there was plenty of space on the PCB. Remember that this PCB is not needed with the 700AS1 module, only the 125ASX2 or even 250ASX2. 

If you can get the 700AS1 module, the auxiliary outputs are already +\- 15V and the preamp power supply is not required.

PCB 87A contains the circuits for two balanced line recievers. One will be used as desinged by Rod and the other will be modified as an instrument level input simiklar to that shown in the ESP Project 27.

The outputs will be mixed and sent to both the line transmitters on the Project 87B PCB. The output of one will be fed to the two amplifiers in the ICEpower 125ASX2 power amplifier module this will "bridge" the amplifier giving about 450 Watts into 4 ohms but in excess of 270 watts into 8 ohms. This would give the meet original Baschat 1x12  spec of giving 120dB output  to keep up with a noist drummer. .

The preamp will be housed in a hammond 1590XX diecast aluminium enclosure the PCBs can be seen above here mounted to the lid of the enclosure. the connectors and controls will be mounted to the base of the enclosure. Now to stare loading (or stuffing as our friends across the pond say) the PCBs. starting with the power supply.

I have been awaiting some parts and the majority arrived today.

As I have said before the preamp will be basic. As the design assumes the uses of a digital Multi-Effects unit as the main source,  there is no EQ on board. Even low cost units such as Zoom B1 Four have easily accessible EQ  so it would be a waste to fit more. Passive EQ reduces the signal level and active EQ is more complex. Both will increase the noise of the preamp (what electronic engineers call noise, we hear as hiss).

I  am using Elliott Sound Products printed circuit boards .There are three PCBs. The first is a power supply board Project 05. This will take the +/- 23V auxiliary rails from the Icepower module.