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75 3.0 litre back box

Posted: Sat Apr 16, 2011 3:05 am
by Bruce
.. it's very heavy but seems to be well made, had it now for over 12 years. Anyway, what kind of design is it - absorption, reflection or other design?

Re: 75 3.0 litre back box

Posted: Tue May 03, 2011 12:34 pm
by Bruce
No takers on this? I have to take it apart and have a look..