Balcro

Maybe you also need this: - https://www.youtube.com/watch?v=l8MbcoSsc14 There's a thread on here somewhere about the BD121 sucking out the mids and this fairly simple mod. I've searched on 5 or 6 sub-forums but I can't find the original post or remember the OP. I think the youtube poster is a member on here. Balcro.

[quote name='Telebass' timestamp='1416562920' post='2611413'] Spring for the postage (£3.90) and they're yours. [attachment=176838:DSC00059.JPG] [/quote] That'll do nicely. PM'd Balcro

In your last post (with the two graphs) You've set the input to 200 watts. Without changing anything else, click on the "maximum SPL" tab and from the drop down menu select "Cone excursion". You've exceeded xmax by 1.5mm. at about 77Hz! Keep that up for long and you won't have an undamaged Basslite. All the features and parameters are there to be married together. They're listed for a purpose. Yes, it's loud, but for how long. Balcro.

Tuning the cab lower will only reduce the hump but it will not be eliminated. Reducing the hump will make it easier to re-balance the sound via the amp or bass eq. Cut the bass and boost the mids. However, tune too low and and the already weak low-bass power-handling will suffer drammatically. Give yourself a shock by clicking on the (Transfer function magnitude / SPL menu) button and selecting maximum power! There's more to tuning than simply achieving the highest SPL. Do as Bill suggests in post #7 and just enter the parameters he has listed; winISD will do the rest. Then save it. Likewise, when it comes to adjusting the response, tune it as Bill suggests. Balcro.

I agree with Salt on your Bass?. Get another 15. The ideal partner would be the GB-115ext extension cabinet which is designed to go under your combo. If the combo is raised on top of the extension cab then the tweeter will be near your ears and the "airiness" will still be apparent. If you can't afford or can't find a GB, then another 8ohm 15" cab that handles 300w would be the next best thing, not forgetting top panel dimensions so that the combo fits on top. The increased wattage available at the amp (on its own) will not give a noticeable increase in volume, but adding a second loudspeaker - sound source - will up the decibels. Balcro.

Calling chriswareham! Calling chriswareham! Over & Out. Balcro

Before you start cutting and sawing, it's worthwhile having a look at the individual drive units and checking they're all the same impedance as well as the stated impedance (ohms) of the existing 4x10. You will probably have to do a re-wiring job unless your amp has twin speaker outlets. Put those figures up here and no doubt some experienced basschatter re-wiring expert will let you know what's necessary. Ballcro.

HI there. I bought my bass from them over 3 years ago. Long guarantee on the product and a very good price. As I recall it took about 5 working days for the delivery. I was very pleased to get a call from my credit card supplier who spotted the transaction to France and double checked its validity. Good luck. Balcro.

[quote name='MoonBassAlpha' timestamp='1403523252' post='2483475'] Hi Balcro Thanks for checking that for me. I assume you got the power handling vs freq and xmax figures from a different simulator to WinISD? - I couldn't see where it would provide that info. My next checks will be about the port. I will go for a full width slot. I don't have the sizes to hand, so from memory it was about 268mm by 30mm giving a shelf length of about 90mm and mach 0.10. I did read somewhere that there should be at least 3" (76mm) gap between the end of the port and the rear panel, so with a box depth of 168mm it should be just about ok [/quote] Hello mba, No, the technical figures are all provided by winISD. Look for a tab or button marked "Transfer function magnitude". Click it and it will bring up various parameter options including port size; set it for a round, square or rectangular; the choice is yours. Set your chosen volume first, then work from there. Balcro.

[quote name='MoonBassAlpha' timestamp='1403473715' post='2483100'] What was the volume of the cab for that model? When I ran it in win|SD, the figure came out at 13 litres with a -3dB point at about 90Hz. I'm not looking for massive bass, so that seems ok, but I was a bit surprised at how small the volume came out. Not complaining though (unless I've entered one of the T-S parameters wrong!) [/quote] Hi MBA, I checked again and the volume is surprisingly small. As you say, a volume of 13 litres gives a figure of around - 4 at 90Hz. The ported box in the second thumbnail was set at a net volume of 23 litres. Net volume accounts for the volume inside the box occupied by the BN-200x and the volume taken up by a slot port. I tweaked it up for purposes of illustration to give just a little more low bass. With the larger box, power handling is 200 watts all the way down to 65Hz, then drops to only 100w at 60Hz. 60Hz is also the point where "xmax" is reached with a 100w input, however with that input the system is producing a sound level in excess of 115db! Reducing the volume of the enclosure down to 13 litres will lower the 200w power handling down to 55Hz and the xmax point to about 51Hz. The trade off is a loss of about 3dB @ 90Hz. That should be good enough for many practice and small gig situations, but avoid huge inputs and the use of an octaver. Balcro

As Bill and Phill have said, porting is the answer. Picture 1 is the Celestion in a closed box. Picture 2 is the result when fitted in a small slot ported box. Balcro.

[quote name='davidlovellbass' timestamp='1402762606' post='2476644'] Thank you all for the responses, I never gave the speaker specs much thought as the cabinet never sounded like it was being taxed at any volumes. Where could i find a cabinet design that'd use the speaker to it's full potential? I don't have a cabinet design program but making one isn't beyond impossible or would an existing brands cabinet work just as well? [/quote] From doing another run-through using the winISD modelling program, you realise that the E145 is very versatile, in that you can tune it to a variety of sounds. You can extend the low frequency response, you can tune it for a "flattish" frequency response with a slight low boost in volume, or raise the tuning to give a warm low-mids. It doesn't care. It also seems to be quite capable of working in a wide range of cabinet sizes; perhaps in the range 65 - 150 litres. Of course, the smaller the box the lighter it will be. My impression is that maximising it's true potential is for a nearly flat response with some low bass extension. For an example of what might be suitable as a cabinet design, take a look at the "pinned" DIY cabs section of Amps & Cabs. On page 1 post #8, dated 25/5/07. richardH shows a nice 1x15 fitted with an EV speaker. Something along those lines would be good. There are two things to consider if you want to buy a 1x15 second-hand cab of similar size:- The diameter of the existing screw/mounting holes in the cab and whether they match the E145. Probably not; so they may need to be re-drilled. Secondly, the baffle hole may need to be re-routed to match the speaker frame. Balcro.

Hi daidlovebass, The E145 is definitely the thing to keep. It seems to be under-rated. so much so that it will probably last for many more decades. I've run it's specs through winISD, the first JBL I've checked, and it's the first unit I've come across that handles more than it's rated capacity and laughs at the amp power! It handles the full 150 watts all the way down to it's fundamental resonance @ 35Hz. I think that's it's thermal limit, but at the same time it never exceeds the mechanical "xmax" until the same low point. Where most (not all) reflex-port loaded drive units show a sharp dip in mechanical capacity between 55 - 70Hz, this thing just keeps on going. Mechanically you can simulate a 600W Rms input and that 55-70Hz band is still below xMax! That's rugged. Enjoy, Balcro

Hi chriswareham, All is not lost. I may have the perfect solution in the form of the best preserved (i.e barely used) Celestion G18-C in the world. It's a 100w version, but could be 15ohms - can't be sure until I take the back of the home-built cabinet. Fundamental resonance is 35Hz. Bought by me from a shop in Tottenham Court Rd in about 71/72. I carried it home via the underground and rail to Hornchurch in Essex. To this day I have a weak back and very long arms which have never reverted to their original length! Since then it probably hasn't been used for more than 50 hours and always stored in the house, not even in a garage. We have builders in at the moment, so the enclosure is underneath "other stuff" behind me. If you can give me a couple of weeks, I'll investigate the Ohms rating. The deal is, if you want it, it's yours, but you'll have to take the enclosure & speaker together. Balcro.

[quote name='Lozz196' timestamp='1401995104' post='2469110'] Cheers Paul, here`s hoping too...... To clarify, so far we have: 1. Me - US 78, standard pups, maple 2. JohnnyBoyRotten - Squier, SD QPs, rosewood 3. Hertsbass - US 2012, standard CS pups, maple 4. Grandwazoo - Dingwall PJ5, Dingwall pups, maple 5. Charic - MIM 2006, SD QPs, maple 6. Seashell - MIM, standard pups, rosewood. 7. Balcro - Encore; own-brand p/u; Made in Korea (probably); Elite Stadium 45-105 rounds; maple. [/quote]

Hi Geek99, I went from a 45 - 105 D'Addario 165 XL's to GHS Brite Flats 52- 103 (ML 3075). No adjustment necessary. Balcro.

Hi Subthumper, It looks like you've got some options here. 1. Maybe the existing cab is wrongly specified for the drivers, so that at high levels it's farting out. The existing set-up could be checked to see if it's basic design is OK. Put up some info on your rig with the rough internal dimensions of the cab, plus the number and size of the ports and any info you have on the bass drivers. 2. A new build 2 x 15 with two Neo drivers will cost about £300 - £380 for the bass drivers alone. Balcro.

[quote name='theyellowcar' timestamp='1399412550' post='2444099'] I should be good for this, even if it's just for a couple of hours. It would be VERY helpful if someone would volunteer to pick me up from Hatfield station though 1: TheGreek - Ritter Cora/ ACG SC Harlot and Genz Benz 3.0/Vanderkley MNT112/ Drum machine. 2. Charic- ACG Finn 4 (Drop C), Custom MIM P bass with Shuker neck, Yamaha RBX6JM, Hartke Kilo, Bergantino NV610, TC Electronic Gmajor 2, Tech21 XXL, Behringer Bass Chorus, SourceAudio Multiwave Distortion Pro 3, Aende - Markbass F500, SWR 112 Cabs, MM Stingray, Fender Modern PLayer Jazz with East preamp, some effects......) [color=#282828][font=helvetica, arial, sans-serif]4. Sibob - ACG Finn SC 5, Fender '71 Precision, 'The Effects Library'[/font][/color] 5. Lozz196 - cakes, couple of Precisions, , Markbass CMD121P & NY121, Tech21 VT DI 6. gary mac 7. Truckstop 8. seashell - Fender P 9. StephenYork - Alpher Custom Bass, EBS TD650 and either Markbass 152 or TC BC212. 10. Bassface2K10 11. Doctor of the Bass 12. Captain Bass 13. Ratman - Streamliner, Bergantino HD112, a few effects, Squire P. 14. Barkin 15. Hertsbass - Fender P, plus a couple of pedals 16. Bottle - modded Ibanez GSR-180, modded Squier Precision Special (de-fretted), amp and a couple of 12" cabs, some pedals :0 17: charliethornton - Lakland AJ55/ Aguilar Tonehammer 500 and Vanderkley MNT210. 18: Jonnyboy Rotten - Squier P 19: Danj - F-Bass AC5, AC Jazz 4, shuttlemax 12, 2x12 & possibly a GK 112 depending on arsedness 20: theyellowcar - MIM Deluxe Active P 21: Balcro. I'll almost certainly be there, with ye ancient Encore Precision to add to the mix. [/quote]

Try this link- http://support.fender.com/manuals/instruments/Fender_BassGuitars_manual_%282011%29_English.pdf Balcro.

Hi Mojo, Further to previous posts, I would still advise you to look at a matching pair of Peavey Blue Marvel 1038 speakers. They're about £70 each on ebay-uk. Alternatively why not contact Peavey UK in Corby. The Celestions will work OK in a 95 litre cabinet and the general efficiency is similar (as far as you can tell from manufacturers spec-sheets) but they will have their own particular tonal characteristics which could be very different to the Peavey combo and at worst, for technical reasons, the combination of different drivers in the enclosures could produce indistinct sounds. Best of luck. Balcro.

[quote name='Phil Starr' timestamp='1396339949' post='2412345'] Just a thought, is that frequency plot with one or two drivers in the cab? My reservation with the Celestions is their relatively high fs.(fo in Peavey speak) if the cab is tuned to 50ish Hz it may need the ports re tuned. [/quote] Good morning Phil, Yes, that plot is with 2 drivers. Balcro.

Hi Mojo, Yes it does work. See the attached graph (95 litres- roughly the size of a 210TVX cab) . As Celestion say on their web-site "it has a rich warm tone and a powerful low-end thump". If the cabinet volume is reduced to about 80 litres then the hump is much reduced, but still a hump.

Hi Mojo, After looking at those 2 speaker choices in winISD, I would say don't touch the "Sheffield". I couldn't get it to produce reasonable graphs and it appears best suited to working in a closed box. Even then I think it's fairly poor as a bass speaker and it's less efficient (quieter) than the Blue Marvel, so even if you had it, it would sound quieter and less effective than the combo. On the other hand the "Blue Marvel" driver is just fine with good low bass extension in a vented cabinet at between 75 - 90 litres fitted with two drivers. Just like the combo. Best to look out for an old BAM cabinet. Balcro.

I think much the same as neepheid. Take advantage of the one band breaking up to give your brain and especially your hands a rest. In a couple of months come back refreshed and take some lessons on technique and theory. Good luck. Balcro

[quote name='Bill Fitzmaurice' timestamp='1395516130' post='2403328'] My WinISD defaults to a QB3 alignment for the Deltalite II 2515, at 157L and 44Hz. 119L loses 2dB from 40-50Hz. XP support ends in three weeks, time to move on. [/quote] I'm running winISD Pro Alpha v 0.50a7 and I get an identical result. Quite why Eminence recommend, an enclosure volume between 51 & 119 litres I don't know, but they do. I only found 1 version download on the Linearteam web-site, but I'll try it on my other computer with W7. Balcro.