I bought secondhand Naim SBL speakers with mk2 bass driver a while ago.
My plan is to get them in the best possible shape;
New gaskets; I have ordered 5 mm neoprene, 0.3 mm aluminium sheet and veneer pins.
New crossover; Les at Avondale has built a pair of crossover for me that are ready to be shipped.
Replace the old tweeters with new ones.
I just removed one of the tweeters and discovered that it is Scan-speak D2008/8512 (with ferrofluid).
The leads have only been wrapped/tied to the terminals, not soldered.
There is also no brass/rubber or any sign of any hotglue on the back of the tweeter.
There is a peace of metal attached to some kind of damper material onto the bottom of the box.
Is this original?
I had expected original Scan-Speak D2008/8511 (no ferrofluid), hotglued around the edge at the back and a brass/damper attached to it. Correct?
My plan is to replace the tweeters with Scan-Speak D2008/8511, Hiquphone OW2 (compatible according to another thread about SBL) or similar.
But as I don't have the brass/dampers I wonder what to do.
What is the function of it?
Would I need it also for Hiquphone OW2?
I noticed that the nominal sensitivity SPL at 1W/1m is not the same:
Scan-Speak D2008/8511: 89 dB https://www.lautsprechershop.de/hifi/scanspeak_tweeter_en.htm
Scan-Speak D2008/8512: 88 dB https://www.lautsprechershop.de/hifi/scanspeak_tweeter_en.htm
Hiquphone OW2: 90 dB http://www.hiquphon.dk/page1.html
Now I'm not sure what to do.
Looking for advise please
My plan is to get them in the best possible shape;
New gaskets; I have ordered 5 mm neoprene, 0.3 mm aluminium sheet and veneer pins.
New crossover; Les at Avondale has built a pair of crossover for me that are ready to be shipped.
Replace the old tweeters with new ones.
I just removed one of the tweeters and discovered that it is Scan-speak D2008/8512 (with ferrofluid).
The leads have only been wrapped/tied to the terminals, not soldered.
There is also no brass/rubber or any sign of any hotglue on the back of the tweeter.
There is a peace of metal attached to some kind of damper material onto the bottom of the box.
Is this original?
I had expected original Scan-Speak D2008/8511 (no ferrofluid), hotglued around the edge at the back and a brass/damper attached to it. Correct?
My plan is to replace the tweeters with Scan-Speak D2008/8511, Hiquphone OW2 (compatible according to another thread about SBL) or similar.
But as I don't have the brass/dampers I wonder what to do.
What is the function of it?
Would I need it also for Hiquphone OW2?
I noticed that the nominal sensitivity SPL at 1W/1m is not the same:
Scan-Speak D2008/8511: 89 dB https://www.lautsprechershop.de/hifi/scanspeak_tweeter_en.htm
Scan-Speak D2008/8512: 88 dB https://www.lautsprechershop.de/hifi/scanspeak_tweeter_en.htm
Hiquphone OW2: 90 dB http://www.hiquphon.dk/page1.html
Now I'm not sure what to do.
Looking for advise please