[Dave]

I just picked up this guy at a garage sale. It's got slots for 4 x EL84's
and 2 x 7247's (no tubes with it). Anyone know the rated output power of
this amp? or (gasp!) a schematic? Shouldn't be hard to make one as it
looks to have been re-wired sometime in the past 20 years... I don't
remember purple wire from 50's or 60's era gear.

thx

Dave S.

[Peter Wieck]

On Oct 24, 12:42 pm, "Dave" wrote:
I just picked up this guy at a garage sale. It's got slots for 4 x EL84's
and 2 x 7247's (no tubes with it). Anyone know the rated output power of
this amp? or (gasp!) a schematic? Shouldn't be hard to make one as it
looks to have been re-wired sometime in the past 20 years... I don't
remember purple wire from 50's or 60's era gear.

Typical PP EL86/6BQ5 output is ~11 - 17 watts. The former pretty
conservative, the latter pretty optimistic. Mostly around 15 watts or
so.


www.agtannenbaum.com/f_cat.html Start here for a schematic. There are
many other sources as well.

Peter Wieck
Wyncote, PA

[maxhifi]

Dave wrote:

I just picked up this guy at a garage sale. It's got slots for 4 x EL84's
and 2 x 7247's (no tubes with it). Anyone know the rated output power of
this amp? or (gasp!) a schematic? Shouldn't be hard to make one as it
looks to have been re-wired sometime in the past 20 years... I don't
remember purple wire from 50's or 60's era gear.


Plenty of purple wire in old stuff - they likely used whatever they had on
hand. I think they called it violet


thx

Dave S.

[John Doe]

Dave wrote:
I just picked up this guy at a garage sale. It's got slots for 4 x EL84's
and 2 x 7247's (no tubes with it). Anyone know the rated output power of
this amp? or (gasp!) a schematic? Shouldn't be hard to make one as it
looks to have been re-wired sometime in the past 20 years... I don't
remember purple wire from 50's or 60's era gear.

thx

Dave S.




Good amp and was designed to provide power to a companion Tuner-Preamp
via an umbilical cord.

Since it provides power for another unit, the PS would supply excess
voltage if the unit is used as an amp only. If you decide to rebuild
this amp, you should take the PS situation into account.

In top shape, it is good for 11-12wpc, with rolloff at the frequency
extremes. However the midrange is outstanding.

Overall good little amp.

Best,

rl1856