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Design Acoustics PS-55 - Replacement Tweeter

QUiKSR20

QUiKSR20

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Hey Guys,

Picked up a set of Design Acoustics PS-55 ( nothing special ) , They were free but one of the tweeters appears to have disintegrated... Magnet completely detached from the tweeter into the cabinet.

Does anyone know where I can find a replacement? I checked the usual Ebay ( none available ) and not sure what parts express tweeters may fit..
Im not trying to build these back to factory spec just looking to make these functional for a small outside bar.

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The screw holes measure ( center to center 3 inches across by 2.5 inches top to bottom ) if that helps.

Thanks in advance
DG
 
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At the very least you'll need to know the sensitivity, crossover frequency and impedance of the old tweeters. Impedance should be marked on the back of the old tweeter (probably 8Ω, since that's what the system as a whole is), and I just found a site that said the crossover frequency is 4khz, and sensitivity is 88dB. General guideline is that the resonant frequency (Fs) of the tweeter should be ≤ ½ of the high pass crossover frequency of said tweeters, so 2khz.

You really should remove the tweeter and measure the hole underneath. Since you don't care about keeping them original it's not a big deal if you have to drill new screw holes, but you don't want to be in a position where the tweeter you buy is either too small to cover the opening, or the magnet is too big to fit.

Of the inexpensive tweeters at Parts Express, these seem like they may be the most appropriate electrically (8Ω, 2khz Fs, 89dB sensitivity), but due to their small size, it's not a given that you'll be able to cover the existing holes and still be able to screw them down. There are a couple of cheap cone tweeters that have an even lower Fs, but IMO that would be a major step down from the existing dome. Madisound also sells them for only slightly more, and after shipping prices are about the same for both.

Note that if you decide to go through with this, you'll want to replace both tweeters, since you'll almost definitely be changing the sound of the speakers somewhat (hopefully for the better).
 
swechsler said:
At the very least you'll need to know the sensitivity, crossover frequency and impedance of the old tweeters. Impedance should be marked on the back of the old tweeter (probably 8Ω, since that's what the system as a whole is), and I just found a site that said the crossover frequency is 4khz, and sensitivity is 88dB. General guideline is that the resonant frequency (Fs) of the tweeter should be ≤ ½ of the high pass crossover frequency of said tweeters, so 2khz.

You really should remove the tweeter and measure the hole underneath. Since you don't care about keeping them original it's not a big deal if you have to drill new screw holes, but you don't want to be in a position where the tweeter you buy is either too small to cover the opening, or the magnet is too big to fit.

Of the inexpensive tweeters at Parts Express, these seem like they may be the most appropriate electrically (8Ω, 2khz Fs, 89dB sensitivity), but due to their small size, it's not a given that you'll be able to cover the existing holes and still be able to screw them down. There are a couple of cheap cone tweeters that have an even lower Fs, but IMO that would be a major step down from the existing dome. Madisound also sells them for only slightly more, and after shipping prices are about the same for both.

Note that if you decide to go through with this, you'll want to replace both tweeters, since you'll almost definitely be changing the sound of the speakers somewhat (hopefully for the better).
Click to expand...

Thanks for the great response, I will definitely remove the tweeter and measure the size of the hole before ordering anything. I appreciate the quick research you were able to do on the ohms/specs, Would you happen to know what tweeter you thought was a good match on parts express? I think you tried to link to it but when I clicked it was the same link as the specs ( typo ). Thanks in advance!
 
Also make sure that the flange of that replacement tweeter won't interfere with the grille or grille frame.
 
You guys wanna laugh, So in wanting to measure for the right size tweeter replacement I removed the tweeter again and wanted to clean out the cabinet and find the old magnet. It was clinged on the main woofer magnet.. I tested fitted it back to the tweeter because it just look like the magnet fell off ( clicked right into place ) Put some gorilla glue on it with a weight.. Came back 12 hours later and hooked it up and its good as new.. Works like a champ, Tweeter is fixed!
 
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