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harmon kardon a700 amp output trafo impedance
harmon kardon a700 amp output trafo impedance
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Old 10th May 2009, 09:09 PM   #1
kimarin is offline kimarin  Norway
diyAudio Member
Join Date: Jul 2001
Location: Norway
Default harmon kardon a700 amp output trafo impedance

Does anyone know the primary output trafo impedance of det harmon kardon a700 amp?
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Old 10th May 2009, 10:51 PM   #2
llwhtt is offline llwhtt  United States
diyAudio Member
Join Date: Jun 2008
Location: SoCal
I have an A700 that is in pieces right at the moment and realized that was a very good question since I never measured these OPTs before. Hooked one up to signal generator and a couple of meters and this is what I found:

OPT #H10517898, 8319410, 148A18: 16 Ohms = 5,553 Ohms P-P
8 Ohms = 5,149 Ohms P-P
4 Ohms = 4,914 Ohms P-P

The 16 Ohms is the most accurate since it includes the full secondary winding.

Do you need a schematic? I have a copy of the owners manual which includes the schematic.

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