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In Reply to: Re: Thankyou......... posted by Jimmy on May 27, 2006 at 16:41:59:
The KSN1142a is once again available... yes, they do sound quite good. I use 1142's in a lot of PA gear.You can also use the KSN1165a, which is the same driver in a small horn. It is also a "Powerline Series" (built in protection circuit up to 400w) like the 1142. And you save the cost of buying a separate horn lens. I have some 1165's in my living room speakers now. They replaced a now out of production tweeter AND midrange in my nearly 25 yr old speakers.
You can put 2 or more in parallel (they have a very high impedance). Place them very close together, touching, in a vertical array as per Bill's picture. They are rated at SPL = 92 db/wt@1m, but they sound more like 95 or so. So, be aware of their efficiency in comparison to your woofers and mids.
If you mate an 1142 or 1165 with a 92 db rated woofer the speaker will sound too bright. I have used 1165's with woofers rated 95-96 db and they balance well. In my living room speakers the woofers are rated SPL = 92 db. I have the L-pads dialed down 3 db, and the speaker sounds right.
You can place an 8 ohm 10w-20w resistor in parallel with these piezos and they will act like an 8 driver as far as the crossover is concerned. Now you can put an L-pad between the piezos and xover. Use only a capacitor (6 db) for crossover, and chose any frequency you want from 1800 hz on up. Piezos react badly with inductors. In this way you can cross over higher than their natural 1800 hz roll in if you want.
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Follow Ups
- Re: Thankyou......... - Paul C. 08:44:02 06/06/06 (1)
- Re: Thankyou......... - Bill Fitzmaurice 20:11:24 06/06/06 (0)
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