M8E loudspeaker impedance?

Tube and solidstate amplifiers made by Rickenbacker

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M8E loudspeaker impedance?

Postby (Pentti Saares) » Tue Mar 06, 2018 11:40 am

Hello, everybody!
Last week I purchased Rickenbacker B9A amp from 1965 and it sounds wonderful! Because I want to play stereo I wanted another Rickenbacker amp. I was lucky to spot M8E (maybe 1966) in Spanish ebay (I live in Finland) which I bought and it was delivered to me today. Loudspeaker was not original and broken. I want to replace it with Jensen Alnico 8", but problem is I don't know what impedance should I choose. Schematics don't give any clue. Please, if anybody knows the answer, let me know!
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Re: M8E loudspeaker impedance?

Postby (Pentti Saares) » Wed Mar 07, 2018 6:41 pm

I withdraw my question. It's impossible to answer, because the OT might be non-original. I'm taking this M8E to my amp wizard to get measured. Meanwhile I installed new Jensen 8" Alnico 4 ohms loudspeaker to it and very carefully did some testing. The thing sings like a bird!! And Rick-O-Sound testing with my B9A really blew my mind. Good heavens! Geez, I hope they'd start make amps again some day....
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Re: M8E loudspeaker impedance?

Postby (Pentti Saares) » Tue May 08, 2018 5:46 am

Hello, again!

My M8E has now been measured. OT is original and loudspeaker impedance is 8 ohms. New Jensen 8" alnico is installed and what a beautiful combo this is. Sound is loud, clear, strong and beautiful! For me M8E was a compromice, because I really wanted to have an older M8 model with a 6AV6 preamp tube and smaller cab. Now I'm very happy with my more "modern" version. I think larger cab means a lot considering sound produced. These things are excellent working amps, cool looking and very easy to repair.
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Re: M8E loudspeaker impedance?

Postby (jdogric12) » Tue May 08, 2018 9:41 am

Very cool! Welcome and thanks for sharing!
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