6L6s in a VH4S

[Jaymz82]

i've installed the SED 6L6GCs winged "C" in my VH4S and i definitely leave them in the amp. the sound is really amazing - exactly what i was looking for. far more smooth than the JJs.

but unfortunately i could not bias them
the digital multimeter did not display any current. all i got, was 0.00. i did all exactly in the way as the instructions say. i even tried two differen DMM and it didn't work. what am i doing wrong?

here's the DMM ad the setting i've used:

Did you remover any fuses? Did put the amp in full running mode?
And check the DMM fuses. I once blew the fuse of both DMMs I owned and was about to believe that something was wrong with my previously owned Einstein

 

[mdc]

i've installed the SED 6L6GCs winged "C" in my VH4S and i definitely leave them in the amp. the sound is really amazing - exactly what i was looking for. far more smooth than the JJs.

but unfortunately i could not bias them
the digital multimeter did not display any current. all i got, was 0.00. i did all exactly in the way as the instructions say. i even tried two differen DMM and it didn't work. what am i doing wrong?

here's the DMM ad the setting i've used:
http://www.pixum.ch/int/img.php?u=mdi_cioccio&t=2&i3=!4220632271422579328429121229&ts=13979&np=1&sid=r4wz5dbe92668b60d421dec91845c1da&srcslaves=0[img][/quote]

Did you remover any fuses? Did put the amp in full running mode?
And check the DMM fuses. I once blew the fuse of both DMMs I owned and was about to believe that something was wrong with my previously owned Einstein :doh:[/quote]

yes, i did put the amp i full running mode and i didn't remove any fuses.
edit: i've just checked the DMM fuse. it seems to be broken. i hope, that it will not blow again...

 

[sean106ESP]

Hack, if you don't mind me asking. Did you build like a little baffle or mini room around your cab and head for recording? (notes your avatar) Cuz I always have a tough time making clips as my attic is all hard wood floors and oval shaped and the only time I made decent clips of, say my rack...it was in the studio we jam in and it is a big room and has carpet and everything. Thanks man

 

[mdc]

Hack, if you don't mind me asking. Did you build like a little baffle or mini room around your cab and head for recording? (notes your avatar) Cuz I always have a tough time making clips as my attic is all hard wood floors and oval shaped and the only time I made decent clips of, say my rack...it was in the studio we jam in and it is a big room and has carpet and everything. Thanks man

the pic on my avatar was taken at the recording studio. the amp was installed in a mini room to avoid any noise and unwanted hall effects.

 

[sean106ESP]

Gotcha. Yeah I am always trying to make clips in my attic/toy room and the room is just horrible for micing my cabs. Thanks man

 

[mdc]

i've put new sed 6l6 winged c tubes in my vh4s a few month ago. i'm really happy with them and they fit my kind of sound. but the feedback they produce is a bit annoying and it seems like it gets worse each time i play. the feedback even sets in (sometimes) when i play a chord on channel 4 before the chord rings out. should i rebias it once again? i already did the biasing after changing the tubes.

thanx for any help!

 

[wolfeman28]

i've put new sed 6l6 winged c tubes in my vh4s a few month ago. i'm really happy with them and they fit my kind of sound. but the feedback they produce is a bit annoying and it seems like it gets worse each time i play. the feedback even sets in (sometimes) when i play a chord on channel 4 before the chord rings out. should i rebias it once again? i already did the biasing after changing the tubes.

thanx for any help!

Are you sure it's not time for new preamp tubes also?

I've never had power amp tubes cause feedback or go microphonic on me. To fix feedback it was always- 1. Move away from the cab, 2. Turn down the gain, 3. Turn down the volume, or 4. Microphonic tube in v1

 

[mdc]

i've put new sed 6l6 winged c tubes in my vh4s a few month ago. i'm really happy with them and they fit my kind of sound. but the feedback they produce is a bit annoying and it seems like it gets worse each time i play. the feedback even sets in (sometimes) when i play a chord on channel 4 before the chord rings out. should i rebias it once again? i already did the biasing after changing the tubes.

thanx for any help!

Are you sure it's not time for new preamp tubes also?

I've never had power amp tubes cause feedback or go microphonic on me. To fix feedback it was always- 1. Move away from the cab, 2. Turn down the gain, 3. Turn down the volume, or 4. Microphonic tube in v1

ok, thanx for your help! i'll check the tube in v1. which one should i get?

 

[wolfeman28]

i've put new sed 6l6 winged c tubes in my vh4s a few month ago. i'm really happy with them and they fit my kind of sound. but the feedback they produce is a bit annoying and it seems like it gets worse each time i play. the feedback even sets in (sometimes) when i play a chord on channel 4 before the chord rings out. should i rebias it once again? i already did the biasing after changing the tubes.

thanx for any help!

Are you sure it's not time for new preamp tubes also?

I've never had power amp tubes cause feedback or go microphonic on me. To fix feedback it was always- 1. Move away from the cab, 2. Turn down the gain, 3. Turn down the volume, or 4. Microphonic tube in v1

ok, thanx for your help! i'll check the tube in v1. which one should i get?

Before you buy a new one, try swapping one of the other preamp tubes in their and see if it fixes your problem. If you swap and it fixes it, then you have a microphonic tube. If that's the case, I'd go with a Tung Sol in v1 at least. I use them in all my amps and love them. As for the other preamp tubes, lots of people like the 9th gen tubes, but I just use tung sol everywhere.