Quad GT/Vox VT60 Vol problem

[keithmantle]

My etap is in for a modification with Ecca so I've reverted to using my Quad GT eftp, I'm using the AC15 amp sim on the Vox but there is a lack of volume Quad in/output are up full and amp, (also Vol can be increased using middle tone control ?) Any ideas please

[AlanMcKillop]

Elimination my boy.

1) guitar > amp
any issues with volumes? This will test guitar, lead and amp, have two of each if possible just in case. If everything operates as it should, look at the Quad GT. Check the additional lead that will be used when you hook up to the GT.
Is there an input meter/level on the GT (or is it just the Q2 & Q20)? From memory, the input level should be set between 12 and 2 o'clock and check the meter level (if appropriate) and if a signal is obvious, it could well be the output of the GT.
You can eliminate or confirm the GT to be the problem, by using another guitar, amp and lead.

[keithmantle]

Elimination my boy.

1) guitar > amp
any issues with volumes? This will test guitar, lead and amp, have two of each if possible just in case. If everything operates as it should, look at the Quad GT. Check the additional lead that will be used when you hook up to the GT.
Is there an input meter/level on the GT (or is it just the Q2 & Q20)? From memory, the input level should be set between 12 and 2 o'clock and check the meter level (if appropriate) and if a signal is obvious, it could well be the output of the GT.
You can eliminate or confirm the GT to be the problem, by using another guitar, amp and lead.

It looks like a amp problem Alan I've tried 3 different leads direct to amp and still no volume. thanks for the reply

[Mark Burton]

Turn off the amp. Squirt some switch cleaner on a jack plug and plug the jack in and out several times (quickly) on every jack socket on the amp - especially the send / return jacks on the back - common problem with the VT120 / 60

[roger bayliss]

As Mark says Keith known problem. Vox uses crap sockets I had to get Amanda to replace 4 on my AC30 Heritage recently.

[keithmantle]

Thanks Mark/Rog, i did squirt some on the input, but will now squirt the lot !! cheers Keith

[47guitarman]

Hi Keith,
I agree absolutely with Mark and Roger.
I had a VT60 and the send/return sockets were always giving problems.
Do you use the GT via send and return or do you plug guitar into GT and then plug GT into amp input ?
If you use second method try plugging a patch lead between amp send and return sockets. This will bridge out the internal switches on the sockets.
Regards, Dave

[keithmantle]

Hi Dave, I've squirted all the sockets and tried a patch lead on send/return but still no appreciable increase in volume. Could it be the 12AX7 valve ? I've got a 12AY7 i could try. Thanks Keith

[AlanMcKillop]

A duff valve will cause a drop in volume, try it.

[keithmantle]

Changed valve still no volume, and squirted jack sockets again