In article ,
Ben Turville wrote:
Does anybody know anything about this 12 inch loudspeaker? It is in my
guitar amplifier. What is it worth, and is it any good? 8 ohms

People claim the 917 is an "updated version of the Altec 417," but it isn't.
Fs on the 917 is a lot higher and it wants to see a smaller box volume.
This is probably a beneficial thing for a guitar amp, and it is entirely
possible the 917 was built as a reaction to people using the 417 in guitar
cabinets.

T-S parameters can be found at:
http://alteclansingunofficial.nlenet...ele-Small.html

Is it any good? I dunno... if you like what it sounds like, it's good.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."