The Amp Garage

Is the Toneslut Power Transformer available with a 240V Primary? No, Toneslut PT primary is 120v only. I'm in the UK (well, Isle of Man but lets not split hairs :wink: ) and have just built an Express using Nik's Power Transformer, chassis and boards and toneslut (rather than Ceriatone) Output tran...

Very neat arrangement, I do like the idea of using the spare triode stage to cool things down further; how much does this change the character of the amp? Would it be worth using a relay and putting it on a footswitch?

Another alternative would be the Polypropelene / oil caps from http://www.angela.com/ they big but not too expensive, 50uf 600v are $18 each

Allan

Hi Omar, Water soluble solder flows really well as is great to use BUT there is a problem, you must wash all soldered joints in warm running water afterwards to remove the flux residue, if left it is corrosive and will case problems with solder joints. Some components cannot be water washed, eg pots...

I have an 18watt TMB EF86 built by Nik and a Twreck Express clone I built myself using Niks chassis and boards and Moose trannies. IMHO the classic 70's Marshall rock sound can be best replicated with the TMB channel of the 18watt rather than the Express, which is a higher gain sound nearer to EVH (...

Thanks for all of the comments so far. Reason I'm interested in dc heaters is that I rewired my champ 5E1 clone with dc heaters and it did make a considerable difference to hum level, but not sure how much was down to bad lead dress rather than dc supply. I think dc heaters are more common among hif...

Check out this thread :- http://ampgarage.com/forum/viewtopic.php?t=622 Paul Ruby's comments were very relevant and useful to my wreck build, I had a buzz on mine when I first fired it up but I rewired it and rearranged the grounds as per his instructions and it made a huge difference, its almost no...

There is no polarity on the heaters otherwise you wouldn't be able to run them off AC. If it was a directly heated cathode then you may want to worry about it but it should still work either way. Thanks Dana, that what I'd hoped to hear :) Any idea why Dan Torres states that positive should go to p...

I’m considering adding a DC filament supply to a preamp I'm building, which has 12AX7, EF86 and 6SN7 tubes in it. I know that the usual advice with 12AX7 is to connect positive to pins 4&5 and negative to pin 9. Does anyone know if EF86 and 6SN7 heaters are polarity sensitive with DC heater supplies...

I tried a pair of 6em7's for the PI and output stage and it sounded great. The 6em7 is an octal dual dissimilar triode that was used for TV circuits. The higher mu stage makes a good PI while the lower mu stage can be used for the output stage, given that you use a low Zpri OT. I used the 1500 ohm ...

And can anyone tell me what's a good attenuator for it or are attenuators just not right for the express. I've just finished my Express build (Ceriatone chassis, boards PT and Moose OT at 6600k with EL84's) and it works great with my 8 ohm THD Hotplate, kills the noise but keeps the tone even on -1...

Thanks for the help Loverocker, good to know my proposed layout should work OK; nothing stopping me now :) Looks like a cool little amp, these things can sound great through a 4 x 12, I've already built a Torres Tinytone Marshall and a 5E1 champ, funnily enough a firefly was next on my list.... If y...

I'm building a small 1watt practice amp consisting of 1 x ecc81, 1 x ecc 82 and 1 x 6SN7 tubes as per this schematic:- http://myweb.absa.co.za/g.landry/uTube2.htm I was goung to add a load resistor and line out so that I can use it as a footpedal too and in order to build it into a small enclosure i...

Excellent! I'm definately going to build one now :D Many thanks for taking the trouble to record the soundclip and draft layout and revised schematic. Definately has a hi gain sound and seems to control well from guitar volume. The schematic changes seem to move the preamp nearer to the Wreck than t...

Has gorgeous clean tones and thick overdrive which cleans nicely with guitar volume rolled back. Kinda Liverpoolish with less gain. Did a couple of changes since then. Can try to update the schemo if you want. Hi Timo, Sounds like exactly what I'm looking for! An updated schematic would be highly a...