Sears Silvertone 1472

CJ · Sep 12, 2018

closet amp, never been opened up, cobwebs, spiders, got bit by a brown recluse,

CJ · Sep 12, 2018

nite site has info>

http://www.silvertoneworld.net/amplifiers/1472/1472.html

vertical tubes somehow stay put, 6V6GT

CJ · Sep 12, 2018

Jensen 4 ohm 12" speaker C12R

CJ · Sep 12, 2018

1961 so 55 years old,

unfortunately some of those blue Sangamo's were leaky, and also four 330 K resistors were bad,

CJ · Sep 12, 2018

built for speed, sound improved with resistor change, some were open

CJ · Sep 12, 2018

yes they ran out of terminals, thus the tape, those caps are for the Tremlo circuit, 1961 amps had mispelled "Tremlo " on the panel silkscreen,

CJ · Sep 12, 2018

foil and #

CJ · Sep 12, 2018

schematic with DC voltages, this amp breaks up early so the slide players like it,

note lack of bias resistor on split load phase swapper, not a mis-print, do not know how the amp functions without but it does,

CJ · Sep 12, 2018

original tubes, good slikscreen,

CJ · Sep 12, 2018

do not know tube brand, made in USA,

CJ · Sep 12, 2018

no tolerance band, 20% ?

CJ · Sep 12, 2018

weird cap, .00068 , upper left, across plate resistor in trem circuit,

benb · Sep 12, 2018

Funny about "Tremlo." There was some other big company that labeled it "Vibrato."

I guess all those Italian musical terms were so confusing ...

CJ said:
no tolerance band, 20% ?

Yes, and if you were my age and played with resistors as a teen (think "My Sweet Lord" on the radio) you wouldn't have to ask!

Oh my, control room porn:
https://www.youtube.com/watch?v=SP9wms6oEMo

PRR · Sep 14, 2018

> no tolerance band, 20% ?

It is a Silvertone, not a Silver Tolerance. 20% was still available. And probably extra-cheap as old stock was cleared.

The brown-turd cap is also familiar to oldsters.

Sears Silvertone 1472

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