'74 Vibro Champ site up

jjmantele · December 12th, 2004, 02:11 PM

Here's a site for the '74 VC I bought a few moths ago.

http://www.geocities.com/jjsant/vibrochamp.html

A fun toy. 8)

skepticult · December 12th, 2004, 07:56 PM

Do you have any clips of the your VC running in "tweed" mode, by any chance?

lenny · December 12th, 2004, 08:24 PM

very cool. it makes me wanna start takin apart my vc..
dammit now i need a silverface to play with.
ahh 2 champs running in stereo one on either side.. :D

jjmantele · December 12th, 2004, 09:02 PM

No sample of the normal vs tweed mode yet. Maybe Monday night I'll tape one.

As a consolation, here's a clip of the homebrew "tweed" champ. Is exemplifies the change in gain possible at various volumes.

http://www.geocities.com/jjsant/champo_sm58.mp3

lenny · December 12th, 2004, 09:23 PM

wow! serious overdrive. mine doesnt overdrive nearly that much. except for the last one , i guess on 10 i think they all sounded great. i bet the 10 would too if you cut some bass. too thwocky for me (refer to other recent thread for definition of "thwock")

skepticult · December 13th, 2004, 01:04 PM

Quote:

Originally Posted by jjmantele

No sample of the normal vs tweed mode yet. Maybe Monday night I'll tape one.

As a consolation, here's a clip of the homebrew "tweed" champ. Is exemplifies the change in gain possible at various volumes.

http://www.geocities.com/jjsant/champo_sm58.mp3

Cool, thanks. An mp3 is worth 1000 words...

Sounds great.

jjmantele · December 13th, 2004, 08:43 PM

Quote:

Originally Posted by lenny

wow! serious overdrive. mine doesn’t overdrive nearly that much. except for the last one , i guess on 10 i think they all sounded great. i bet the 10 would too if you cut some bass. too thwocky for me (refer to other recent thread for definition of "thwock")

Getting a brighter sound (when cranked) has been tuff from the homebrew Champ. I've already lowered the value of some coupling caps and added a 1 or 0.1 bypass cap to the 1st stage. Adding one to both stages caused feedback/oscillation. I had a "bright cap" on the volume control but that just makes things brighter when not cranked so I took it off. Added a presence control but that too removes treble so I took that out. I have a feedback disconnect switch that doesn't change the "tone" but does add gain.

The cab could be part of the equation too. I have a "universal" output tranny in it so I can run my 4X10 Marshall with it. Looks pretty funny side by side. I don't like the lack of "fullness" from the closed back at that low volume from the Marshall.

Maybe some day I'll lower more coupling caps but I've also felt that I should be adding high end rather than lowering low end. Of course it's all relative.

I guess the right thing to do would be to remove bass via lower couplers and then add a tone (treble cut) control. Hmmmmmmm

jjmantele · December 14th, 2004, 09:13 PM

Here's a sample of the cranked vs cranked and pulled sound.

http://www.geocities.com/jjsant/Vibrochamp.MP3

Not a huge difference but a little more mids, volume, grit and sustain with it pulled.

skepticult · December 16th, 2004, 08:10 PM

That's a pretty significant difference. The distortion sounds a lot tighter. Thanks for posting the clips.

December 12th, 2004, 02:11 PM	#1 (permalink)
jjmantele Tele-Holic Join Date: Aug 2003 Location: New Jersey Posts: 851	'74 Vibro Champ site up Here's a site for the '74 VC I bought a few moths ago. http://www.geocities.com/jjsant/vibrochamp.html A fun toy. 8) __________________ JJman If it says "Vintage" on it -it isn't.

December 12th, 2004, 09:02 PM	#4 (permalink)
jjmantele Tele-Holic Join Date: Aug 2003 Location: New Jersey Posts: 851	Not yet No sample of the normal vs tweed mode yet. Maybe Monday night I'll tape one. As a consolation, here's a clip of the homebrew "tweed" champ. Is exemplifies the change in gain possible at various volumes. http://www.geocities.com/jjsant/champo_sm58.mp3 __________________ JJman If it says "Vintage" on it -it isn't.

December 14th, 2004, 09:13 PM	#8 (permalink)
jjmantele Tele-Holic Join Date: Aug 2003 Location: New Jersey Posts: 851	Pull Here's a sample of the cranked vs cranked and pulled sound. http://www.geocities.com/jjsant/Vibrochamp.MP3 Not a huge difference but a little more mids, volume, grit and sustain with it pulled. __________________ JJman If it says "Vintage" on it -it isn't.

December 12th, 2004, 07:56 PM	#2 (permalink)
skepticult Tele-Meister Join Date: Nov 2003 Location: Houston, TX Posts: 405	Do you have any clips of the your VC running in "tweed" mode, by any chance?

December 12th, 2004, 08:24 PM	#3 (permalink)
lenny Banned Friend of Leo's Join Date: Jan 2004 Location: New Haven, CT. USA Posts: 3,219	very cool. it makes me wanna start takin apart my vc.. dammit now i need a silverface to play with. ahh 2 champs running in stereo one on either side.. :D

December 12th, 2004, 09:23 PM	#5 (permalink)
lenny Banned Friend of Leo's Join Date: Jan 2004 Location: New Haven, CT. USA Posts: 3,219	wow! serious overdrive. mine doesnt overdrive nearly that much. except for the last one , i guess on 10 i think they all sounded great. i bet the 10 would too if you cut some bass. too thwocky for me (refer to other recent thread for definition of "thwock")

December 16th, 2004, 08:10 PM	#9 (permalink)
skepticult Tele-Meister Join Date: Nov 2003 Location: Houston, TX Posts: 405	That's a pretty significant difference. The distortion sounds a lot tighter. Thanks for posting the clips.