• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

6V6 line preamp

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Salas

Salas

diyAudio Chief Moderator
Joined 2002
Paid Member
Those cheap ones are nice, they just don't last long and are not best transparency, yet still clean enough. But they show the way, and the channel balance is right. Before 40ish positions no switch pot is really smooth in volume handling is another thing they lack VS best.
 
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DimZ

Member
Joined 2007
quite flexible .... I think that if you dont screw them tight they wont work as they can, they must be a little tight ...
between screws its all rubber ..
 

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stajo

Member
Joined 2011
Paid Member
Salas said:
With such low gain main amps yes, gain aids their dynamics even on sensitive speakers. There was a very easy to understand article by member Pano about gain distribution in the whole chain. A rather underestimated thing in home audio but every one involved in live and recording systems knows its of cornerstone importance.
Click to expand...

I wonder why this is not taken more in concideration then i does. Its really hard to find a power amp that is not going to clip with an input over 2 V RMS and still nearly all nice sounding preamps preps out a humungous 10-20 V RMS at no attenuation with standard 1,5-2,5 V RMS source input.

That puts us to cathode followers but they are hard to make sounding really great or OPTs on the gain preamp that costs a bunch and is hard to find a perfect match on.

Something went wrong. Maybe we should construct less input sensitive poweraps and focus on the pre's instead?

Staffan
 
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stajo

Member
Joined 2011
Paid Member
Truthfully we usually cut off the metal caps and use them for solution buckets when glueing or modding speaker cones. But they are really linear and nice tubes and as cf I have a feeling they're gonna bring magic. We have to dig deep tho. Maybe we find aged booze. Cya in a bit;) I think we can find nice sockets also. I like the backelites even if the teflones is supposed nicer. Appearence gets you layed;)

Staffan
 
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Salas

Salas

diyAudio Chief Moderator
Joined 2002
Paid Member
I was measuring the 6V6 bootstrapped follower few days ago, and it was still very good technically although my toroid is on same top plate and buzzes a little after some years it got a bit loose. I put some Stan Getz and was very musical also. Wait, maybe I can measure it again and keep an FFT screen clip to post in a few minutes.
 
S

stajo

Member
Joined 2011
Paid Member
Salas said:
I was measuring the 6V6 bootstrapped follower few days ago, and it was still very good technically although my toroid is on same top plate and buzzes a little after some years it got a bit loose. I put some Stan Getz and was very musical also. Wait, maybe I can measure it again and keep an FFT screen clip to post in a few minutes.
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Dig up the ol Ministry CD or sumething that you used to imp on the ladies wearing the longside striped leggings. Stan I Getz easily on my EL84 but im in for the kick-bass. Its in the G3g followed by a EL34 Shade Triode, I feel it;)

Staffan
 
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