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 Speaker Transformer to suit Astor Mickey HNQ
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 Return to top of page · Post #: 1 · Written at 11:35:59 AM on 22 March 2016.
Ashhhhh's Gravatar
 Ashhhhh
 Location: Armidale, NSW
 Member since 26 October 2015
 Member #: 1813
 Postcount: 27

Hey all,

Im after a tranny to suit the Astor Mickey HNQ.
Original code EDB64, Part Number PT930.

Its 5500-3.7 Ohm.

Cheers
Ash
 
 Return to top of page · Post #: 2 · Written at 4:48:50 PM on 22 March 2016.
Ian Robertson's Gravatar
 Ian Robertson
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 2629

I have a quantity of speaker transformers that are actually PA type 100v line matching transformers. I've used them successfully in battery radios, they are Japanese made, very slightly smaller than your original and have taps that match your requirement.

I know they are not ideal as they lack an air gap but they seem to work just fine. The extra current drawn by a mains powered radio's output valve might be a problem saturating the core though.

Would you like to try one anyway?
 
 Return to top of page · Post #: 3 · Written at 1:54:46 PM on 23 March 2016.
Pa Man's Gravatar
 Pa Man
 Location: Golden Grove, SA
 Member since 10 April 2015
 Member #: 1726
 Postcount: 149

I have a couple of transformers out of radiograms.
They are single ended 6M5's which I think are about 7500 ohms
and run 2 ohm speakers.
might do at a pinch if nothing else comes up.

Josh
 
 Return to top of page · Post #: 4 · Written at 2:49:55 PM on 23 March 2016.
Gandhn's Gravatar
 Gandhn
 Location: Cameron Park, NSW
 Member since 5 November 2010
 Member #: 770
 Postcount: 425

I have a couple of transformers that were professionally rewound, essentially brand new except for the iron. They are 5000 / 3.7 ohms, one is 6.8 cm and the other 7.5 cm mounting hole centres.

Email me if either is of interest.

Harold
 
 Return to top of page · Post #: 5 · Written at 4:53:52 PM on 23 March 2016.
Ashhhhh's Gravatar
 Ashhhhh
 Location: Armidale, NSW
 Member since 26 October 2015
 Member #: 1813
 Postcount: 27

Thanks guys, appreciate the responses.
In the end I wound a new primary myself, up and running.

That said, I have two other radios with the same issue, I'll keep you in mind when the time comes.

Thanks again.
 
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