What is the model M-31 JBL ?

[joe.shephard]

I am trying to find out the history of a JBL M-31 spkr. I understand it was used in musical instrument amplifiers. Is it the same as a D-130 ? If not what are the differences? Also approximately when was it manufactured? I look forward to a response. Thanks.

[grumpy]

http://www.google.com/custom?hl=en&c...proservice.com

Check "Transducer Replacement List.pdf"

[JBL Dog]

I am trying to find out the history of a JBL M-31 spkr. I understand it was used in musical instrument amplifiers. Is it the same as a D-130 ? If not what are the differences? Also approximately when was it manufactured? I look forward to a response. Thanks.

The JBL M31 was manufactured for use in the Peavey Session 400 Guitar amp.

It was baically an alnico D130 and was available in 4 and 8 ohm versions.

[grumpy]

Found this, re dating... hope that helps some:

"... There should not be a Session 400 amp earlier than a 1974, unless
a prototype is floating around the country somewhere. Thanks for your interest.
Mike Brown
Peavey Electronics Corporation"

[Zilch]

http://cgi.ebay.com/VINTAGE-JBL-M-31...QQcmdZViewItem