Looking for Hammond Output Transformrt

[grindfix]

Hi,

Can anyone suggest where to find A0-30072-1 OPT?
Hammond E-143 organ AO-63-1 chassis

Thanks
Dmitriy

[Jyvoipabo]

Hi,

Can anyone suggest where to find A0-30072-1 OPT?
Hammond E-143 organ AO-63-1 chassis

Thanks
Dmitriy

Hello,

This amplifier is a 7591 Puhpull
http://www.tubezone.net/pdf/7591.pdf
See schematic. Working point is 450V;400V;-21,6V
Page 3 of 7591 data recommends a tube load resistor of 6600 Ohm plate to plate (primary).
In this condition Power output is 45 Watts
I think secondary is 8 Ohm with center tap (CT).

This transformer is a 6600 Ohm CT / 8 Ohm CT ; 45W min

Search here :
hammond transformers cross reference
Or download Hammond catalog https://www.hammfg.com/files/literature/5c.pdf

Model 1650P is 6600 Ohm CT / 4;8;16 Ohm / 60 W Audiophile !

JP

[David Anderson]

Jyvoipabo is correct. The only way you will find an exact replacement output transformer is from a parts unit.

Otherwise, you simply choose the type of output transformer specified for a push-pull output stage using the type of vacuum tube you have in the amp. You will probably have to accommodate different mounting dimensions.

[nonreverb]

I might have one. I'll check tomorrow.

[nonreverb]

Sorry for the long time to respond. I haven't found one as of yet. Thought I did. :-/

[nonreverb]

Bingo! I found it....PM me please if you're still interested.

[grindfix]

Bingo! I found it....PM me please if you're still interested.

I know its been several years. I'm sorry but I didn't get any notifications. I found exact match and all is good. Thanks!

[nonreverb]

Excellent!