Page 21 - 2015-03

Miniature PE cell compared to a $1 coin.
Rear of the Son

The unmarked projection lens

The 6 volt 5 amp exciter lamp was
Underside of the amplifier fed with AC from a winding on the
power transformer (see exciter lamp
atures in its country of origin. It was rec- article).
ommended the motor be kept running to
provide air flow! In operation, the first thing that is obvious
is the motor noise. Like the GEM, the silent
I read recently that the motor was wound version of this model, it is quite noisy -once
for 180 volt operation - so as it would run described to me by a non-fan as akin to a
to sound speed with its make-break gover- Victa lawn mower!
nor system when used on 240 volts. No
wonder the motor was prone to fail. The sound is just adequate and certainly
not up to filling a large sized room (even
An improved version (the Mark II) became after a rebuild of the amplifier). ©
available at a later date.
The sound head
The sound system consisted of a miniature
photo electric (PE) cell type
CG-10, into a 6SJ7 preampli-
fier, then into another 6SJ7
amplifier-driver and finally
to a 6V6GT output valve.
The speaker was incorporat-
ed into the carry case.

Exciter lamp

March 2015 REEL DEALS 21