Search found 186 matches

by El_Martin
Thu Sep 06, 2012 11:56 am
Forum: Trainwreck Discussion
Topic: 4th gain stage, I am guilty
Replies: 14
Views: 3932

Re: 4th gain stage, I am guilty

Ciao Roberto, the values of the components were some kind of an educated guess. I did not calculate or simulate anything. It proved me right. After building some amps, one should develop some ideas or models to help you sculpture your desired tone. BTW, thanks a lot for your valuable simulations and...
by El_Martin
Wed Sep 05, 2012 10:14 pm
Forum: Trainwreck Discussion
Topic: 4th gain stage, I am guilty
Replies: 14
Views: 3932

Re: 4th gain stage, I am guilty

Hi! I do keep old parts, salvaged or NOS. The coupling cap for instance is one of a kind out of the bin. :D I think, there's no wrong component, if by any means you get THE sound. Sound and taste may differ, though. Good to have a choice and to use your ears and skills to build your own. Ciao Martin...
by El_Martin
Wed Sep 05, 2012 3:31 pm
Forum: Trainwreck Discussion
Topic: 4th gain stage, I am guilty
Replies: 14
Views: 3932

Re: 4th gain stage, I am guilty

Hi Colossal! Tonestack as follows: 470pF silver mica 39kOhm slope 2x22nF=0.022µF Pots TBM:250k, 1M, 25k I used different makes of 22nF, because of the colors. I do have more of each type. Every now and then me likes some gain. Is it the loss of hi frequencies due to getting older? Vanishing playing ...
by El_Martin
Wed Sep 05, 2012 1:08 pm
Forum: Trainwreck Discussion
Topic: 4th gain stage, I am guilty
Replies: 14
Views: 3932

4th gain stage, I am guilty

Hi! OK, I broke the rule. Couldn't stand one triode being wasted in my two cylinder Liverpool. :shock: Inserted it after 3rd stage. 4n7 coupler, Ra=220k(edited), Rk=4k7 (no bypass cap), 470k to ground on gate. Followed by a ... hm...hum...em...errrm HRM -there! another rule broken- full tonestack w....
by El_Martin
Wed Aug 01, 2012 9:22 am
Forum: Technical Discussion
Topic: Teflon Hook Up Wire Euroland Sources? What Is Silicone Wire?
Replies: 18
Views: 4792

Re: Teflon Hook Up Wire Euroland Sources? What Is Silicone Wire?

Hi!

Tony answered it already. I use all kinds of wire, depending on the purpose. Mostly solid core for heaters, though.

Don't worry: you'll get all the parts you'll ever need here in Europe.

Ciao
Martin
by El_Martin
Tue Jul 31, 2012 8:41 pm
Forum: Technical Discussion
Topic: Teflon Hook Up Wire Euroland Sources? What Is Silicone Wire?
Replies: 18
Views: 4792

Re: Teflon Hook Up Wire Euroland Sources? What Is Silicone Wire?

Hi! Most of my parts are from tube-town TT. I use silicone wire usually. Its easy to strip and takes some touch by the soldering iron w/o hurting the insulation. Right, it does not stay where you put it like solid wire. For such purposes I use push-back wire. TT and TAD have been reliable sources fo...
by El_Martin
Sun Mar 18, 2012 6:37 pm
Forum: Trainwreck Discussion
Topic: Hiss in first preamp stage
Replies: 12
Views: 3608

Re: Hiss in first preamp stage

Hi! Yeah, Glen - your right. Not more hiss/noise than a Plexi. But: does anyone play a Plexi w/o mastervolume in the same room with his ears? :shock: My low wattage build are waaay better as regards signal-to-noise ratio. The lil ECC82 PP (around 2 W) is dead silent. It's 3 gain stages, TW style. I'...
by El_Martin
Sun Mar 18, 2012 8:22 am
Forum: Trainwreck Discussion
Topic: Hiss in first preamp stage
Replies: 12
Views: 3608

Re: Hiss in first preamp stage

Hi! That's a common problem... TWs: for gigging OK, for living room you'll be rewarded with more or less annoying hiss. It does react on tubes in V1 a bit on my liverpool 15 W. I know, they're going to shoot me...the dedicated followers of Ken. In other amps there's a 68k Gridstopper for 1st stage. ...
by El_Martin
Sat Dec 24, 2011 12:14 pm
Forum: Technical Discussion
Topic: The VOX AC3 Top Boost
Replies: 24
Views: 9649

Re: The VOX AC3 Top Boost

Hi!

Now THAT'S a cutee - me likey small amps :D
How does it sound?

Ciao&have a nice x-mas
Martin
by El_Martin
Sun Nov 13, 2011 3:06 pm
Forum: Technical Discussion
Topic: 1 watt tube amp
Replies: 28
Views: 9669

Re: 1 watt tube amp

@Cliff All of my ECC82 output amps. (SE and PP) use cheap line transformers. No problems yet. I do not run them with maximum B+. They are around 250-280 V. I wouldnt hesitate to use Hammonds 125 Series, though. Theyre cheap enough. I just wanted to use the line thingys. :twisted: The little screamer...
by El_Martin
Sun Sep 25, 2011 1:48 pm
Forum: Trainwreck Discussion
Topic: Tiny blues express combo / 12AU7 PP w. cathodyne PI
Replies: 10
Views: 8114

Re: Tiny blues express combo / 12AU7 PP w. cathodyne PI

TNX, John 8) Somewhere in the back of my mind ("cheese and onions"...the rutles... :shock: ) there's an idea of having a small amp head with pp tubes in a V-shape ... like some Ducati motor. OK, I'm sometimes a little off-track. Being German, I could as well go "boxer", like in the older BMW bikes. ...
by El_Martin
Fri Sep 09, 2011 1:18 pm
Forum: Technical Discussion
Topic: Favorite 2 tube preamp, 2 el84 amps?
Replies: 27
Views: 7714

Re: Favorite 2 tube preamp, 2 el84 amps?

Hi!

What about the daisycutter?
http://ax84.com/static/daisycutter/18w_ ... 100422.jpg

If your in to the gainy side of life...

Ciao
Martin
by El_Martin
Fri Sep 09, 2011 1:03 pm
Forum: Trainwreck Discussion
Topic: 2Watt_BluesExpress_Version1 by timohp
Replies: 29
Views: 17565

Re: 2Watt_BluesExpress_Version1 by timohp

jeremyb wrote:Anyone got any build pics? I'm tempted to have a crack at one of these, we are 240v in New Zealand as well :)
Hi there!

see my blues express combo:
http://ampgarage.com/forum/viewtopic.php?t=13456

Enjoy!

Ciao
Martin
by El_Martin
Fri Sep 09, 2011 7:20 am
Forum: Technical Discussion
Topic: What Speakers Do You Use in 'The Shop'?
Replies: 14
Views: 3933

Re: What Speakers Do You Use in 'The Shop'?

Hi there! I mostly use a small cabinet w. an El Cheapo 10" 8 ohms 150W (approx. 92-95dB 1W/1m) PA Bass for testing. Surely lacks sparkle, but good enough for first impressions. No one needs the icepick-in-your-forehead feeling of a 103 dB speaker 2 ft. away on axis... Some additional resistors for m...
by El_Martin
Fri Jul 08, 2011 8:20 am
Forum: Trainwreck Discussion
Topic: 2 watt blues express variant-first build-demo video added
Replies: 7
Views: 3659

Re: 2 watt blues express variant-first build-demo video added

Hi! " I will NEVER build a tube amp in an enclosure this small again..." Yep, me too. (Most of my builds w. ECC powerstage feature the crammed rats nest look. :shock: Lil'Wreck (1 ECC83, 1 ECC82 w. single triode ECC82 output stage) Blues Express combo Wiring 5E3 is like a walk in the park in compari...