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116B-121 Output Transformer Replacement
#2

Hi JWD

You want to match a 5,900 ohm impedance to a 1.25 ohm voice coil.

The 125D is a good choice as it can handle 10 watts of audio, which is what the 116B is rated at.

But you will want to use terminals 1 and 3 for your speaker voice coil.

This setup matches a primary impedance of 5,400 ohms to a 1.5 ohm voice coil, close enough for gubmint work. Icon_smile

Terminals 4 and 5 are meant for a 10K load to a 1.5 ohm voice coil, which would cause a more serious mismatch = loss of volume.

Details here:
http://www.hammondmfg.com/pdf/5c0054.pdf

--
Ron Ramirez
Ferdinand IN


Messages In This Thread
116B-121 Output Transformer Replacement - by JWD - 09-09-2012, 01:03 AM
RE: 116B-121 Output Transformer Replacement - by Ron Ramirez - 09-09-2012, 09:37 AM



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