For sale: Definitive BP20 speaker. It is for parts or DIY. It comes without the crossover, and the tweeters are dead. It has 8 Vifa P17WJ-00-04 mid-bass drivers - all working. Boxes are ported but not shown in the images. You will find PDF specs for drivers included here. Again, tweeters are dead, but if you want to replace them, you'll need four. The original crossover was super simple; I am sure you can make something better. Or you can use these as a bass box and add something for mid/tweet. It is in very decent shape, with a piano finish on the top with some light scratches. These drivers are excellent—$ 450 local pick up in Los Angeles, Calabasas area.
This is from the brochure description:
Specs:
Frequency response: 18hz - 28Khz
Nominal impedance: 6 ohm
Power handling: 20W to 500W+ per channel, RMS.
Dimensions: 9"W x 15"D x 46"H
Weight: 80 lbs. each.
Definitive Technology BP-20 Bi-Polar Super-Towers These are the original "Super Tower" loudspeakers with Vifa mid-bass drivers and silk-dome tweeters (as opposed to the aluminum dome variants on later versions). They are configured in a ported bi-polar array (bi-amp capable) with two 6.5" and one 1" drivers on both front and rear baffles in a mid-tweet-mid (D'Appolito) alignment. That's six drivers per speaker cabinet and 12 drivers per stereo pair.
Factory specs does not mean much. Vintage units are known to drift significantly from
factory measured Fs. Have them measured and provide the findings. It will help you
make the sale.
factory measured Fs. Have them measured and provide the findings. It will help you
make the sale.
Hello Lojzek, Thank you for the advice. I agree with you in principle, but I am packing and getting ready for the move. For that very same reason, I am selling—trying to lighten my load. Almost all my audio tools are already packed. Packing and moving the two-level house leaves little room for speaker measurements.