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Old 7th March 2004, 12:38 PM   #1
diyAudio Member
Join Date: Mar 2004
Location: New Hampshire
Default SE used as step down OT

Hi, newbie here.

I have an old boatanchor (Hallicrafters SX-62) undergoing exploratory surgery and find that someone added a SE transformer to the high impedence speaker taps, apparently to allow the use of more "modern" 4/8/16/32 ohm loads. Just curious if this may cause any bad juju. The SE is an old Stancor with 5K primary and is hooked to the 5K tap (and gnd).

Thanks ------- any 'this is bad engineering practice beacause......"
comments would be appreciated. I think this (separate transformer at each load) is basically what is done with 70v systems, right?

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Old 7th March 2004, 06:23 PM   #2
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Join Date: Jun 2002
Location: Macedon NY
Well, listen to it and see - if you want the best possible sound, your best bet is to replace the output transformer. If you want to keep it original (I would), the second transformer is the way to go. Do you have a manual? It's at BAMA
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Old 7th March 2004, 07:26 PM   #3
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Join Date: Mar 2004
Location: New Hampshire
Yeah, I have (original) service manual and I'm not going to be making any modifications. The add-on OT is about as old as the radio itself and it sounds pretty good. Actually I'm still on a learning curve and was wondering how this configutation firured into things ---- sum of the characteristics of both OTs I suppose.

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