It is currently Tue Mar 17, 2020 12:34 am

All times are UTC - 7 hours



Post new topic Reply to topic  [ 10 posts ] 
Author Message
Post subject: Trying to quiet the Vibro Champ XD
Posted: Sun Feb 03, 2013 7:30 pm
Offline
Aspiring Musician
Aspiring Musician

Joined: Fri Mar 16, 2012 12:49 pm
Posts: 838
When I'm at my desk working on a score or an arrangement and playing, I use my VCXD. The problem is when I'm at my desk and not playing I would like the little guy to be quiet until he's needed again but he keeps on humming. Not as loudly as my Champ 600 but still loud enough. :wink:

Short of installing a standby switch, is there any other way to hush the little guy up?

If the only solution is a standby, does anyone have experience with this one which was suggested in another thread: Carling DPST Toggle Switch. Does the install require major surgery or is the procedure relatively straight forward?

Thanks & Cheers!
BM

_________________
This is the Blues. Are you listening?


Top
Profile
Fender Play Winter Sale 2020
Post subject: Re: Trying to quiet the Vibro Champ XD
Posted: Sun Feb 03, 2013 7:44 pm
Offline
Rock Star
Rock Star

Joined: Mon Apr 05, 2010 2:37 pm
Posts: 8708
Location: Natural Bridge, Virginia
Does a VCXD have a volume control? :wink:

_________________
Bill

Image


Top
Profile
Post subject: Re: Trying to quiet the Vibro Champ XD
Posted: Sun Feb 03, 2013 7:53 pm
Offline
Aspiring Musician
Aspiring Musician

Joined: Fri Mar 16, 2012 12:49 pm
Posts: 838
bluesky636 wrote:
Does a VCXD have a volume control? :wink:
LOL! That's a good one, Bill. :wink:

When I'm not playing through the amp the volume is turned all the way down and out of force of habit I do the same with the volume on the guitar. The hum is still there. Not as much as when the volume is turned up, but audible and somewhat of an anoyance.

Cheers!
BM

_________________
This is the Blues. Are you listening?


Top
Profile
Post subject: Re: Trying to quiet the Vibro Champ XD
Posted: Sun Feb 03, 2013 8:06 pm
Offline
Rock Star
Rock Star

Joined: Mon Apr 05, 2010 2:37 pm
Posts: 8708
Location: Natural Bridge, Virginia
Yeah, my C600 hums a bit with the volume turned all the way down, but I just ignore it.

You could add a standby switch. Easiest place would be in the B+ line from the power supply to the output transformer. Don't know it the line is a real wire or a PCB trace. It the latter, that could make things tricky. Of course, you have to locate the switch and drill a hole in the face plate or back plate. All you really need is an SPST switch of the proper voltage rating. In the end, I'm not sure if it would be worth the effort.

http://support.fender.com/schematics/gu ... ematic.pdf

_________________
Bill

Image


Top
Profile
Post subject: Re: Trying to quiet the Vibro Champ XD
Posted: Mon Feb 04, 2013 4:03 am
Offline
Rock Icon
Rock Icon
User avatar

Joined: Fri Feb 05, 2010 4:31 am
Posts: 14049
Location: Province de Québec, Canada
Carling switch do the job , I use few time .


Top
Profile
Post subject: Re: Trying to quiet the Vibro Champ XD
Posted: Mon Feb 04, 2013 5:11 pm
Offline
Aspiring Musician
Aspiring Musician

Joined: Fri Mar 16, 2012 12:49 pm
Posts: 838
stratele52 wrote:
Carling switch do the job , I use few time .
Salut stratele52. How difficult is it to make this mod? After it's done, is the amp totally quiet when the toggle switch is in the standby position?

bluesky636 wrote:
... You could add a standby switch. ... In the end, I'm not sure if it would be worth the effort.
I was thinking that if it's a simple matter of swap-the-switch by following destructions :wink: on the wiring diagram then it may be something I would attempt with proper supervision and assistance from a friend who knows his way around electronics. If it's more involved then I would probably bring the amp to a qualified tech. However your admonition about this endeavor not being worth the effort gives me good reason to pause and reconsider. Could you elaborate on why you feel it may not be worth the effort.

[Sidebar: BTW, you were right about the red jewel light. :D ]

Cheers!
BM

_________________
This is the Blues. Are you listening?


Top
Profile
Post subject: Re: Trying to quiet the Vibro Champ XD
Posted: Mon Feb 04, 2013 5:24 pm
Offline
Rock Star
Rock Star

Joined: Mon Apr 05, 2010 2:37 pm
Posts: 8708
Location: Natural Bridge, Virginia
BM:

First of all the Carling DPST switch is unnecessary. It is designed to replace the toggle type power switch of an amp that does not have a standby switch, with a single switch that does both power and standby switching. As your amp has a rocker type power switch, you would have to unwire that switch and wire up the new switch for both functions. That may not be easy on a PCB based amp. All you really need is an SPST switch inserted in the high voltage line as I described.

As far as why it may not be worth the effort, being a PCB amp you may find that the circuits you need to modify are copper traces and not real wires. Depending on how parts are installed, you may have to cut the traces and solder wire to them to make either switch work. If it were me, I would simply turn the volume all the way down and ignore the slight hum (58, almost 59 year old ears don't work as well as they used to anyway. :lol: ) or just turn the amp off. :wink:

_________________
Bill

Image


Top
Profile
Post subject: Re: Trying to quiet the Vibro Champ XD
Posted: Tue Feb 05, 2013 2:57 am
Offline
Rock Icon
Rock Icon
User avatar

Joined: Fri Feb 05, 2010 4:31 am
Posts: 14049
Location: Province de Québec, Canada
+1 Bluesky

PCB + rocker switch ; forget Carling switch .


Top
Profile
Post subject: Re: Trying to quiet the Vibro Champ XD
Posted: Tue Feb 05, 2013 5:46 am
Offline
Aspiring Musician
Aspiring Musician

Joined: Fri Mar 16, 2012 12:49 pm
Posts: 838
Thanks for the detailed explanation, Bill. It put things into the proper context and I now understand why my proposal is not a good idea.

Stratele, thank-you for the confirmation.

Cheers!
BM

_________________
This is the Blues. Are you listening?


Top
Profile
Post subject: Re: Trying to quiet the Vibro Champ XD
Posted: Tue Feb 05, 2013 4:49 pm
Offline
Rock Star
Rock Star

Joined: Mon Apr 05, 2010 2:37 pm
Posts: 8708
Location: Natural Bridge, Virginia
You're welcome. :D

_________________
Bill

Image


Top
Profile
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 10 posts ] 

All times are UTC - 7 hours

Fender Play Winter Sale 2020

Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to: