Glasshouse TVC pre amp

[david C]

this has been something of a long term project, so many wires so much soldering fiddly connections, all shoehorned into a small case, I never want to do that again,

now to run it in and see what it's like

[andrew Ivimey]

Since I started using mine (different version from Promtheus Audio- and no soldering to do - hooray!) a few months ago, David, I have used nothing else. I am surprised, very pleased and can't really see me going back to an active preamp.

I think you will find the same. TVCs are rather special.

The only drawback, I suppose, is of you can't drive enough through to the power amp to do justice etc. I haven't found this a prob. though ... yet.

Anyway, if you've finished all that tedious and painstaking soldering, well done!

On with the music ... I found there was a noticeable improvement after a couple of hours. Now, as I said, I use it all the time.

[Andrew]

C'mon Dave, where the piccies.......

cheers,

-- Andrew

[david C]

sorry too late,
I've boxed it all up now,
even that was an epic, I had to put it in a clamp to get the screw holes to line up

[david C]

I agree with you Andrew I,
I've been using it for a few hours now and the sound is very addictive, no more one note bass and very detailed overall, not slow either something that is leveled at them

a good move I think, worth all the hassle

[Ian]

hi David

nice sexy gal

one way you can get a bit more drive is actually use a single triode gain stage after the TVC, so you can get a bit of both worlds.

[Nick]

The other way (which I intend to do with Daves AVC's) is to use a buffer stage infront of the TX's, the step down nature means they will drive the line ok if they are driven with a low source impedance. And it also avoids problems with the source not being able to drive the TX well enough.

[Andrew]

We tried this with my S&B's using Nick's buffer at Nick's. I thought it was certainly better with the buffer before than after.

cheers,

-- Andrew

[david C]

hi David

nice sexy gal

one way you can get a bit more drive is actually use a single triode gain stage after the TVC, so you can get a bit of both worlds.

yep Scarlett's a fine woman

[david C]

We tried this with my S&B's using Nick's buffer at Nick's. I thought it was certainly better with the buffer before than after.

cheers,

-- Andrew

Hi Andrew
what did the buffer do to the sound?,
did you get the best of both worlds?

[Andrew]

Hi David,

Nick has monoblocks next to his speakers so needs to use long interconnects this makes a difficult load for a source compoment as it has to drive both the TVC and the long interconnects.

I thought, the buffer increased the PRAT and improved bass and treble as it was able to drive the TVC & long interconnects better.

cheers,

-- Andrew