Search found 345 matches

by grtamp
Wed Jun 02, 2010 9:49 pm
Forum: Dumble Discussion
Topic: Tip Jack 100w
Replies: 6
Views: 1035

Re: Tip Jack 100w

Hi Firestorm , there's nothing wrong to use 4 resistor 1 Ohm , but I'd like to know if is possible wired only 2 res...what value? 1 Ohm or 2 Ohm?
by grtamp
Wed Jun 02, 2010 11:30 am
Forum: Dumble Discussion
Topic: Tip Jack 100w
Replies: 6
Views: 1035

Tip Jack 100w

Hi , In a 100w D-stile amp with 4x6L6Gc I seen there are 4 tip jack test point ,but can I wired only 2 for side? must use different resistor value?
Thanks
by grtamp
Thu May 27, 2010 4:36 pm
Forum: Dumble Files
Topic: A Collection of #124 Information (Schematics, Layout, etc.)
Replies: 136
Views: 160685

Re: A Collection of #124 Information (Schematics, Layout, etc.)

Tom , thanks for the clarification!

Grtamp
by grtamp
Wed May 26, 2010 11:31 pm
Forum: Dumble Files
Topic: A Collection of #124 Information (Schematics, Layout, etc.)
Replies: 136
Views: 160685

Re: A Collection of #124 Information (Schematics, Layout, etc.)

Hi guys , sorry but I'm a bit confused about Ratio and Level pots .

If I understand the level pot( between od1 and od2 ) is 100k lin , and Ratio pot ( after od2 ) is 250K log ?

thanks all for help
by grtamp
Sat May 22, 2010 3:33 pm
Forum: Dumble Discussion
Topic: What is most transparent loop buffer design
Replies: 19
Views: 2028

Re: What is most transparent loop buffer design

Hi , can anyone explain the Connor's loop? what's difference with D-lator design?
thanks
by grtamp
Mon May 17, 2010 9:59 am
Forum: Technical Discussion
Topic: My new JTM45 clone
Replies: 15
Views: 6954

Re: My new JTM45 clone

Hi ,very nice amp!!
What type the coupling cap?
Thanks
by grtamp
Mon May 10, 2010 12:25 pm
Forum: Dumble Discussion
Topic: Midboost Footswitchable?
Replies: 20
Views: 2396

Re: Midboost Footswitchable?

thanks very much markus!

:wink:
by grtamp
Sun May 09, 2010 3:50 pm
Forum: Dumble Discussion
Topic: Midboost Footswitchable?
Replies: 20
Views: 2396

Re: Midboost Footswitchable?

Hi all ,seems interesting the program LTSpice ,where I can find it?
Thanks
by grtamp
Thu May 06, 2010 11:02 pm
Forum: Dumble Discussion
Topic: Carlton sound?
Replies: 15
Views: 2610

Re: Carlton sound?

Thanks ,but I want build my own amp, I don't want buy it.

I seen any photo of one his old amp (I think because labeled the name inside ,on chassies) but I don't know if that amp is like a #124 type.
by grtamp
Thu May 06, 2010 10:38 pm
Forum: Dumble Discussion
Topic: Carlton sound?
Replies: 15
Views: 2610

Carlton sound?

The #124 amp is good for a Carlton sound or there are other schematic for that sound? or tweaks?

thanks
by grtamp
Fri Apr 16, 2010 8:52 am
Forum: Dumble Discussion
Topic: presence cap questions
Replies: 19
Views: 2037

Re: presence cap questions

Hi guitarman18,

I looked better and now the layout is okay, I had not seen the dotted line of the earth under the board!
but looking the schematic , I'm not sure for the cathodes of V2 , they could be tied to cathodes of V1 as layout show.
by grtamp
Thu Apr 15, 2010 6:41 pm
Forum: Dumble Discussion
Topic: presence cap questions
Replies: 19
Views: 2037

presence cap questions

If I watch the photo of #124 , I seems that the positive of the presence cap is wired to ground or I'm wrong? If I watch the #124 layout in the "file section", I don't see the ground wired with presence cap instead in the schematic this is tie to cathodes of V2. Can anyone explain me . Thanks very m...
by grtamp
Wed Apr 07, 2010 9:28 pm
Forum: Technical Discussion
Topic: Info for plexi amp
Replies: 3
Views: 1286

Info for plexi amp

Hi all, anybody knows Granger amps? There's schematics on web?
Thanks
by grtamp
Wed Mar 24, 2010 10:18 pm
Forum: Dumble Discussion
Topic: I'm new , first question for 100W
Replies: 7
Views: 929

Re: I'm new , first question for 100W

thank you all for your suggestions, I think to start w/100K plate resistors like #124, and then hear how it sounds,make changes if necessary.
I'm finding this forum really available and competent people, thanks to all for your support.
Thanks
by grtamp
Tue Mar 23, 2010 10:12 pm
Forum: Dumble Discussion
Topic: I'm new , first question for 100W
Replies: 7
Views: 929

I'm new , first question for 100W

Hello everyone, I am new in this forum. for some time that I read many post to better understand these amps Dumble and I would like to build one. I have already experience with tube amps and have built a few pieces for me and some friends. I would make a 100w non-HRM, model # 124 seems a good scheme...