orangepeelneil

@JPJ did you make any progress on your 2x12" build? I'm keen to build one of these myself and have a load of suitable ply. Thanks Neil

I bought one too recently from Gear4music for £50 but had to return it as it was faulty (high pitch squealing every time the footswitch was engaged). I hope this was an isolated QC issue…I haven’t ordered a replacement. The online videos seem good and promising..some people using it as an "always on" to warm up class D amps or a audio interface for PC recording. It uses a 15V dc PSU which is an odd Voltage for effects, looks like a starved plate (low voltage) design of which there are loads of this type and mixed /strong comments... however I'm not aware that anyone has reversed engineered a schematic. I opened mine up as it was faulty and there were lots of SMT components on the rear of the PCB, so not entirely sure how significant the valve is in the circuit.. Here's a picture of the front side of the PCB from Talkbass, although mine looked a bit different. Be interested to see your review and comments to whether I will buy another…. Neil

From the specification (KEY FEATURES) Lead from the back - the 15" Eminence speaker is suited to boosting low-mids and creating a warm, booming sound. Hopefully it will have a Eminence model label.... or email Eden and ask them

Hello, Can you please provide a link to actual cab, maybe we can find the spec of the actual internal speaker online. The cab will have designed around a specific speaker (cab internal volume, dimension of port etc) so its maybe worth opening the cab up , removing the speaker seeing if the original speaker has any manufacturer label/ markings. Most speaker manufactures offer 4 Ohm and 8 Ohm varieties , so you could possibly find the same speaker in 8 Ohm, which may not be cheap..prices start at around £100ish http://www.bluearan.co.uk/index.php?manufacturer=Eminence&masthead=Loudspeaker_Drivers&subheadnew=15_Inch_Drivers I know Eden used Eminence in their cabs, both Neodymium (lightweight) and ferrite (standard-heavier) speakers.

I don't know this amp and haven't found a schematic , but looking at the basic amp spec, it would be worth experimenting with a clean boost to see if you can drive the ECC83 preamp amp circuit to give you some more "natural overdrive" from the preamp valves . Something like a Mosky XP (xotic EP boost clone) circa £20 would do this and gives you upto +20dB of boost. I often do this on my guitar valve amps to get more input gain. Specs: Preamp: 3x ECC83 tubes (3x12AX7) Power amplifier: 4x6L6 tubes 120W output

I have a Fender rumble 15, had it ages (might be a v1) you can get them used for less than £50 Fleabay /marketplace etc. I've found them to be really good, fairly rudimentary , maybe thats the appeal. They have a headphone socket, line in (RCA's) and OK three band 3eq, single 8" I think, and fairly compact. I've had loads of practice amp over the years everything from modelling to tube preamps , but somehow this one seems to get the most use a home. Dunno, worth a try if you can get once locally or cheap. Not my vid, but you get the idea.

Interesting stuff, I've been looking for a used vertical 212, but they don't often come up, so maybe DIY is an option. I tried and was after the discontinued/gone Genz Benz 212T Neo which was really impressive. these have dual edge(side) porting. I can see Jeffs new Genzler brand do a similar sized NU Classic 212T in similar dimensions with bottom porting, but expensive in UK (if you could even get them) Can other speakers than Faital's be used /modelled in this design? such as Eminence DELTA 12LF 8ohm? I think I have a couple of them spare somewhere. Weight isn't a huge factor for me.. Thanks, Neil

My Mark Bass LM3 failed a few weeks ago, terminally = most likely a PSU PCB fault/failure. The cost to fix it wasn’t worth it (was quoted £200) so I sold it to nice guy on FB Marketplace for £150, he was hoping to fix it, I hope he does. For me this is the worst thing about Class D amps.....😞 I’d had it new since 2011 and paid £500, so I’d had a decent run with it and no servicing and plenty of regular use from 2011- 2018 …but not in anger for used for gigs since 2018. My thinking was if it was a car, I’d be happy with that return on investment/depreciation/usage …However I’m going back to having to a 500W Mosfet output based amp (probably Ashdown ABM) as a backup, these seem to around £200 used, which is attractive. I do like the convenience and overall sound/ output of class D amps such as MB , Genz Benz, Orange etc in a band / gig context with an efficient cab and will most likely buy again another 500+W class D amp when I have the spare cash, however like all other consumer electronics, it soon becomes beyond economic sense to repair these and many manufacturers are not building in serviceability (just module swaps) into most consumer electronics, there are some exceptions. For MB I literally couldn’t find any service literature, schematics, layouts etc only guidance and personal experiences in the forums such as BC.

Hello, FYI : The Gorilla “Tube crunch” circuit can be interesting, and has a bit of nostalgia attached to it. I remember them in the early 90s being mostly cranked to max...hmm Apparently the Tube crunch can be a nice sounding fuzz circuit and people have made this circuit into a stomp box, etc and doesn’t use clipping diodes instead it overdrives the op-amp.The tube crunch circuit is in most of the Gorilla amps, TC35/TC65/TC110 etc. “The Gorilla amps were solid-state combo amps aimed at the budget market. They were not terribly well-regarded in their day, but they caught the eye of Josh Homme from Queens of the Stone Age who cranked them for their unique overdrive tone” https://aionfx.com/project/positron-preamp-drive/ http://www.prowessamplifiers.com/schematics/misc/Gorilla_TC35-Gorilla_TC35_Circa_Mid_1980s.html http://dirtboxlayouts.blogspot.com/2020/06/gorilla-tc-35-tube-cruncher-aion.html https://www.diystompboxes.com/smfforum/index.php?topic=98122.0 Thanks, Neil 🙂

Hi everyone, I pickup up an Ashdown ABM 115 locally with a dead speaker recently, the cab is solid ply , not too heavy and decent condition and I want to put a replacement/upgrade in it. Any recommendations? weight isn't an issue for me... Dimensions are 660mm (H) x 420mm x (D) x 600mm (W) minus a bit bit for the internal handles, which are recessed ply. It has two rear ports 75mm diameter x 100mm long. The SICA speaker is open circuit and has totally lost it pistonic function, it just mechanically grinds…but not in a good way...😬 I’ve looked on lots of bass forums and these SICA speakers often come up as failed in cabs, are they underpowered? weak to physical impact? ( I think this cab was somehow knocked over from upright to face down) or ? Thanks in advance Neil

May 2021 was clearly an inspired month....

Yes, I’ve had some amusement from his ‘creations’ on eBay over the years. His trademark these days seems to be telebass headstock and custom 'mounted..' tuners….it looks the one of them has been cut down with an angle grinder here🙄

I bought these brand new from ebay, but they are dead, and the seller has refunded me. They work and are cut for a p bass, but give low output on all strings, I've never experienced a whole dead set as new, really odd. Might be of use to someone before they go in the bin. A few quid for postage. Have a "Handmade" sticker..... Hmmm Thanks Neil