Comments on: Disecting A Epiphone Valve Junior

By: safety valve

safety valve — Wed, 09 Jun 2010 08:07:28 +0000

One more: Can I put an effects loop in the signal?

By: Matt

Matt — Tue, 23 Mar 2010 23:29:31 +0000

Thanks! I’m keeping that VVR kit bookmarked! I was looking at several external attenuator boxes that are either inserted into a loop or between the output and the speaker. They supposedly work like a “power soak” and enable you to crank the amp and then lower the volume without losing that cranked amp tone. Is the VVR similar in function?

Also, quick OT question (I’m new at this, so please bear with me):
On my VJ3 head, I have a multi-tap output (4, 8, and 16 ohm). If I change the OT (to say a Hammond or a Heyboer), do I lose those output options? I don’t really want a 4 ohm out, but the 8 and 16 seem essential.
Can I plug in an 8ohm cab into the 8ohm out AND a 16ohm cab into the 16ohm out AT THE SAME TIME?

Thanks.

By: Gabi

Gabi — Tue, 23 Mar 2010 18:03:56 +0000

There's a VVR (Dana Hall's Variable Voltage Regulator see Products then Kits) that gives you the control of how much B+ you feed into the amp but having the tubes run at the same constant filament temperature. I plan on doing a video on how to instal one of those kits in a regular cathode biased amp, and you can use the same idea to install it into the VJ. I am not familiar with those mods, but I suspect you would add a standby switch right after the high voltage rectifier bridge. For the loop, take a look at the SEwatt.com FAQ (scroll down where it sais "Line-Outs and FX Loops"). you have a couple options there. Hope it helps! Hmm - not familiar too much with those mods,

By: Gabi

Gabi — Tue, 23 Mar 2010 17:26:32 +0000

Hi David! Not a bother at all – I have the first half already filmed. The new episode will detail the negative feedback and adding Resonance, Presence control and even a line out. I will be traveling for the first half of April (taking off next week) and I will try squeezing out before I leave. Thanks for the patience!!

By: Dave

Dave — Tue, 23 Mar 2010 02:18:41 +0000

Gabby, not to be a bother but can we have an update on the no feedback mod you’re doing.

By: Matt

Matt — Tue, 23 Mar 2010 01:44:09 +0000

Gabi,
Any thoughts on installing an internal attenuator and using it as a master volume – but with the tubes saturated?

Also, I’ve read a lot about standby switches. Most of the expensive mod packages out there that include the standby switch just seem to have a switch and some wire. Where would I put that in the circuit? (I have a V3 head).

One more: Can I put an effects loop in the signal?

Thanks.
-Matt

By: Mike Cauley

Mike Cauley — Sun, 03 May 2009 13:29:56 +0000

Hey Gaby,I love your vidio helps,They have helped me,Im building a 50 watt plexie and your heater wiring was invalueable to me,and im 48 years old,i check every day to keep up with garage tales,Thank you for your site You are a awsome
person,Mike

By: Gank

Gank — Thu, 11 Sep 2008 15:27:19 +0000

Looking forward to seeing the video tutorial!