A long time ago, I built 2 TL speakers using the Philips 10100-8 10" woofer in the original Bailey line (Wireless World 1965). It was used with a pair of Janzsen electrostatic tweeters. Wonderful sound but somewhat restrained due to the power handling of the Janzsens. I moved to other speakers and the TL went into storage.
The cabinet is filled with long fiber wools to make it into a half wavelength phase inverter and a non-resonant tube. It gave very tight bass extended down to 30 Hz as Bailey intended. Bailey used the KEF B139 woofer which was too expensive. This design worked very well with the Philips and the Bailey theory was proved by his experiment. Modern designs that claims to be transmission line typically use unfilled quarter wavelength air column. The low frequency sound is loose and not very extended.
I got the TL out of storage recently and found the rubber surrounds have losen its compliance. I intended to use the pair as subwoofer under 120 Hz. I am looking for a drop-in replacement of the Philips 10100-8. Peerless used to make some units at very reasonable price (850146, 831727, 830634) which were no longer available. Among the current Parts Express stock, I am looking at Peerless 830668 and Dayton Audio DC250-8. Any first hand experience using them in a true long fiber wool filled transmission line? or suggestion for alternative at affordable price (<$75 per piece).
Any comment about the pros and cons of trying to re-rubber the Philips 10100?
The cabinet is filled with long fiber wools to make it into a half wavelength phase inverter and a non-resonant tube. It gave very tight bass extended down to 30 Hz as Bailey intended. Bailey used the KEF B139 woofer which was too expensive. This design worked very well with the Philips and the Bailey theory was proved by his experiment. Modern designs that claims to be transmission line typically use unfilled quarter wavelength air column. The low frequency sound is loose and not very extended.
I got the TL out of storage recently and found the rubber surrounds have losen its compliance. I intended to use the pair as subwoofer under 120 Hz. I am looking for a drop-in replacement of the Philips 10100-8. Peerless used to make some units at very reasonable price (850146, 831727, 830634) which were no longer available. Among the current Parts Express stock, I am looking at Peerless 830668 and Dayton Audio DC250-8. Any first hand experience using them in a true long fiber wool filled transmission line? or suggestion for alternative at affordable price (<$75 per piece).
Any comment about the pros and cons of trying to re-rubber the Philips 10100?
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