Search found 121 matches

by RB
Sat Oct 26, 2013 1:28 am
Forum: Technical Discussion
Topic: help with a home built amp
Replies: 22
Views: 3070

Re: help with a home built amp

Turret board looks like a Hoffman board. All those 9 pin tube sockets suggests an AC30 style build. I think the 12AX7s are plugged into output sockets. Need to see how the group of four tubes are wired(should be output section if my assumptions are correct). I am not particularly impressed with wher...
by RB
Wed Aug 21, 2013 4:24 am
Forum: Trainwreck Discussion
Topic: Rocket with 6V6s
Replies: 20
Views: 4014

Look at what has been done in the past

I am totally in favor of all the mathematical and theoretical issues/approaches discussed in this thread but the first thing that comes to mind is; The Rocket uses a VOX style PI and this is used in many Matchless models to drive various output configurations using the VOX circuit values. Also you w...
by RB
Fri Jul 26, 2013 6:15 pm
Forum: Marshall Discussion
Topic: Marshall Silver Jubilee - Tagboard layout with mods
Replies: 23
Views: 6910

Very Nice Torg

Hello Torg

Beautiful - Very precise documentation.
Thank you so much for your generosity.

Regards
Randy
by RB
Fri Jul 19, 2013 1:45 am
Forum: Technical Discussion
Topic: Need Laney LionHeart L20h schematic
Replies: 0
Views: 1546

Need Laney LionHeart L20h schematic

I have one on the bench and need a schematic. Any direction would be greatly appreciated.

Thanks in advance

Randy
by RB
Sun Jul 07, 2013 8:16 pm
Forum: Trainwreck Discussion
Topic: Komet 19 like build
Replies: 8
Views: 2296

Re: Komet 19 like build

He mike what going on with your amp.

You cant just leave us hanging.

I am sure there are a ton of guys wanting to build this amp and would like to know if the schematic is accurate and if you resolved your issues.

Regards
Randy
by RB
Thu Jun 27, 2013 11:51 pm
Forum: Trainwreck Discussion
Topic: Komet 19 like build
Replies: 8
Views: 2296

Re: Komet 19 like build

Have you confirmed that the info you obtained about this being the Komet circuit is accurate? I am not familiar with that Phase Inverter circuit but it looks like it could add a lot of dirt. The first thing I would try is lowering the 470k grid resistors on the EL84s. Tack a 470k parallel with each ...
by RB
Sat Jun 08, 2013 9:01 pm
Forum: Dumble Discussion
Topic: My SSS completed!
Replies: 70
Views: 19686

Re: My SSS completed!

WOW -- Double WOW
by RB
Wed Jun 05, 2013 8:29 pm
Forum: Technical Discussion
Topic: Delete post.
Replies: 129
Views: 11495

Re: Delete post.

The world/internet is a magical place full of people just waiting to be offended by something. Sorry If their are a bunch of ingrates concerned about your saftey/well being. By the way I believe the device known as a Variac is in fact wired as an autotransformer and has zero isolation properties. Pl...
by RB
Mon May 27, 2013 5:12 am
Forum: Technical Discussion
Topic: Cascading channels in tweed amp
Replies: 16
Views: 2715

Re: Cascading channels in tweed amp

Pretty cool M Fowler

How does the dual pot with the presence and master on the same shaft work?

Regards
Randy
by RB
Tue Mar 19, 2013 7:47 pm
Forum: Dumble Discussion
Topic: ODS 124, 6v6, reverb, loop
Replies: 9
Views: 1416

124 OD issues

Check your messages

Regards
Randy
by RB
Tue Mar 05, 2013 1:00 am
Forum: Dumble Discussion
Topic: My take on an SSS
Replies: 104
Views: 44432

Re: My take on an SSS

Thanks so much for sharing. I am pleased to see that you didn't let your last experience here run you off. Your work is of a very high level and is a pleasure to see. The short period of time your JM build was up sparked interest in that amp for me and I built one using the one gut shot I was able t...
by RB
Sat Dec 15, 2012 7:26 pm
Forum: Technical Discussion
Topic: Amp Chassis Finishes/Colors
Replies: 15
Views: 2890

Re: Amp Chassis Finishes/Colors

I have looked at the pics on the Mojave site and the pic that shows the bottom of the chassis with 9 pin socket is clearly a powder coat finish. I have been using hammertone finishes since the early 1960's and You just cant get that depth and type of veining.

Regards
Randy
by RB
Sat Dec 15, 2012 7:16 pm
Forum: Technical Discussion
Topic: Amp Chassis Finishes/Colors
Replies: 15
Views: 2890

Re: Amp Chassis Finishes/Colors

I cant speak to the functionality with any authority. I think time has proven most aluminum chassis do just fine for the most part. If it was a steel chassis powder coat is durable rust protection choice and much cheaper than chrome. For me the finish speaks more to perception of quality - attention...
by RB
Sat Dec 15, 2012 6:34 pm
Forum: Technical Discussion
Topic: Amp Chassis Finishes/Colors
Replies: 15
Views: 2890

Chassis finish

I bought a few 5E3 Chassis from Clark amplification 3 or 4 years ago that had this finish. I would call the color gold on the chassis I had but I think I have seen the finish in a copper tone. This is a powder coat finish and I don't remember what the call the texture - maybe antique veining or some...
by RB
Thu Sep 20, 2012 5:17 pm
Forum: Dumble Discussion
Topic: Help with D'Lator Transformer
Replies: 7
Views: 972

Re: Help with D'Lator Transformer

I think this will do the trick

Allen Amps

TP2X tube effects power transformer

http://www.allenamps.com/parts.php#transformers

OOPs I just re-read your post - Stereo - maybe you will need two.

Regards
Randy