 
|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
|
|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
68.237.140.183
In Reply to: Tnx for SA advice....... posted by Jimmy on May 26, 2006 at 11:41:54:
"better than factory speakers can be built even in a PA application. "Quite so. Those who insist otherwise do so because they don't know any better. In both PA and hi-fi the best speakers available are DIY, since labor cost is not a consideration.
As long as you're going with a tower style box you should consider a line array of tweeters placed to one side of the mids. Even inexpensive piezos work extremely well if you stack a lot of them, and you'll get far better pattern control than with a point source tweeter.
Follow Ups:
Thanks, I recommend Pyle products to him & he may be quite pleased.Anyways, I found the CTS/Motorola piezo part number KSN1142A to have good reviews in the 'high efficiency speaker' data base here at AA. Handles a lot of power as well.
This system is for vocals only with a custom rebuilt DuKane mixer including OP-Amp upgrades.
Other items such as drums will have 2x 400 watts RMS to our pair of Yamaha PA speakers with a Mackie mixer.
The 1142 isn't a bad unit, but using eight 1016s in vertical array as shown here will give a far better result and still cost less than $20 per box.
Looks good.
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.
If you use multiple piezos and they are too sensitive wire them in series to reduce their sensitivity, since they are voltage rather than current limited this will increase their power handling as well.
This post is made possible by the generous support of people like you and our sponsors:
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
