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 Can I use a 4 ohm speaker?
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 Return to top of page · Post #: 1 · Written at 12:47:24 AM on 25 October 2024.
Buzzer's Gravatar
 Buzzer
 Location: Brisbane, QLD
 Member since 23 July 2024
 Member #: 2660
 Postcount: 7

HI I'm trying to replace the speaker of the Radiola 573MA radio, can I use a 4 ohm speaker instead of a 16 ohm speaker?

Thanks
 
 Return to top of page · Post #: 2 · Written at 7:53:54 AM on 25 October 2024.
Ian Robertson's Gravatar
 Ian Robertson
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 2476

It's not ideal, max output power will be reduced and distortion increased slightly, but at normal listening levels you will not hear the difference.
 
 Return to top of page · Post #: 3 · Written at 10:23:07 PM on 26 October 2024.
Marcc's avatar
 Marcc
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5389

According to its specs It should be a 5 by 7 inch speaker of three ohms.
 
 Return to top of page · Post #: 4 · Written at 6:12:23 PM on 27 October 2024.
Frequencyman's Gravatar
 Frequencyman
 Location: Brisbane, QLD
 Member since 18 April 2024
 Member #: 2633
 Postcount: 13

Hi Marcc can I please have a link to that information you found? thanks


 
 Return to top of page · Post #: 5 · Written at 6:41:17 PM on 27 October 2024.
Robbbert's avatar
 Robbbert
 Location: Hill Top, NSW
 Member since 18 September 2015
 Member #: 1801
 Postcount: 2078

It's at Kevin Chant's site

https://www.kevinchant.com/model-numbers-501---600.html

Look for 573MA.
 
 Return to top of page · Post #: 6 · Written at 7:15:35 PM on 27 October 2024.
Frequencyman's Gravatar
 Frequencyman
 Location: Brisbane, QLD
 Member since 18 April 2024
 Member #: 2633
 Postcount: 13

Thanks a lot for that guys ive sourced a 4-ohm speaker
 
 Return to top of page · Post #: 7 · Written at 9:19:53 PM on 27 October 2024.
Marcc's avatar
 Marcc
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5389

Four ohm is much more common value albeit the beast itself is becoming rare. That should sort it out.

Data is on the bottom of that page.
 
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