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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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Thread Tools |
27th Feb 2023, 5:46 pm | #1 |
Hexode
Join Date: Jan 2007
Location: Beckenham, London, UK.
Posts: 373
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Roberts RMB Output Trans
I have one of these with an o/c output transformer. Can anyone suggest a suitable replacement please? I'm assuming the speaker is 3 ohm impedance?
Thanks, Steve |
27th Feb 2023, 10:13 pm | #2 |
Nonode
Join Date: Oct 2017
Location: Bristol, UK.
Posts: 2,386
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Re: Roberts RMB Output Trans
Hi Steve, the DL94 wants to see a 10k anode load so for a 3 Ohm speaker you want a turns ratio of approximately 60:1. RS Components still supply a multi-tapped audio transformer that will do the job so long as you have space to fit it https://uk.rs-online.com/web/p/audio...ormers/2106475. Check the data sheet at this link for physical size and how to connect it. They aren't cheap though. If you are lucky somebody on the Forum might have a spare up for grabs. Jerry
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27th Feb 2023, 11:54 pm | #3 |
Hexode
Join Date: Jan 2007
Location: Beckenham, London, UK.
Posts: 373
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Re: Roberts RMB Output Trans
Thanks Jerry.
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