"Chris Morriss" wrote in message
...
In message ,
harrogate writes

"Chris Morriss" wrote in message
...
In message , Oddjob
writes
Hello all, I have a pair of loudspeakers in walnut cabinets.
I couldn't find the tweeter by feeling around the front - the grills
don't
come off.

I opened them to find wharfedale super 8 / RS / DD drivers inside. A
friend
has told me that they are 1970's with tweeters "built in" to the
woofer!

Can anybody shed anymore light on these speakers?
I don't think they can handle much power as they distort quite easily
:-(

Thanks



They are nice high-quality drive units from the 60s and early 70s.
They
are twin cone units. They roll off at 12kHz or so, so a
high-efficiency
tweeter might be useful.

You'll find quite a lot of info on the web about them.


--
Chris Morriss


Actually known as the Wharfedale Super 8 RSDD - for roll surround doped
(or
was it double) diaphragm.


1" voice coil, 13,000 Gauss field strength. Total Flux 54,000 Maxwells
(In old pre-SI units)

I've probably got the Fs frequency somewhere.
--
Chris Morriss

That's interesting 'cos the 1971 HiFi Yearbook has them listed as 1" Voice
Coil(Aluminium) , Gap Flux 14,500 Gauss. Total Flux 60,000 Maxwells. Paper
cone with double diaphragm. H.C. 6 watts RMS 12W Peak. FR 40-20,000Hz.