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Multi-Way Conventional loudspeakers with crossovers

Energy Pro 22 tweeter replacements ?
Energy Pro 22 tweeter replacements ?
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Old 24th March 2020, 07:56 AM   #1
UserAbuser is offline UserAbuser
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Join Date: Sep 2019
Default Energy Pro 22 tweeter replacements ?

Yes I saw the other threads about this, but thought I'd ask (again) anyway

A friend has handed me 2 pairs of energy pro 22 speakers to repair.

One pair has original tweeters that are close to burnt out.
The tweeters measure ~7k ohm and have no output.

The other pair have mismatched tweeters.
One is the normal aluminium fascia, the other is a plastic fascia.
And just for fun, they neither measure or sound anything like each other.

Unless I am mistaken, if the voice coils are gone, then no one can repair it.
That's ABI Tech and Human Speakers.

Has there been any development in replacements or repairers since the older threads ?

My worst case scenario is to find a similar electrical match tweeter then graft that onto the old face plate followed by a little crossover tweaking.

Thoughts Comments Suggestions ?
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Old 24th March 2020, 01:43 PM   #2
baco99 is offline baco99  United States
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Nearly impossible to repair. You would have to find a voice coil in the correct diameter and impedance and hope for the best. Huw at Human Speakers may be able to rewind the voice coil. AB Tech services in Hopedale, MA is no longer in business. I may have another source for voice coil repair in New Jersey. I have a Pro22 tweeter to repair also, so let me ask him and if he says he can, I'll DM you his info. (He's not a "retailer" so I don't think he wants to be inundated with requests)
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Old 30th March 2020, 10:52 PM   #3
oreo382 is offline oreo382  Canada
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Location: Winnipeg
Email Chris chris@abitech.ca
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Old 31st March 2020, 12:20 AM   #4
baco99 is offline baco99  United States
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My contacts do not repair these tweeters, but Huw mentioned he is working on an inverted tweeter design but it's not ready for prime time yet.
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Old 1st April 2020, 05:09 AM   #5
UserAbuser is offline UserAbuser
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Join Date: Sep 2019
The owner of these found some info with possible options.

Audax TW034X0
Dayton RS28F (no longer available)
Dayton DC28F 8ohm (4ohm no longer available)

I ended up trying the DC28F 8ohm.
I used a dats v2 to measure the free air parameters of this against two of the working (sort off) original tweeters
Electrically it looks like a great match when compared to the better of the originals I have.
The dats sweep also sounds like perfect match.
I didn't bother with a proper mic'd test. Rather pointless when I'm not sure how good or bad the one possible original is.

I spent some time getting it to fit.
Ok some won't like how I've done this, but it works and sounds like a great replacement.

Strip the old tweeter.
All you need is the aluminium face, foam facing, small aluminium face ring.
Drill out the old terminal posts and notch out three spots on the back to allow for the face screws on the new tweeter.

Cut the face down on the new tweeter about 15mm to give extra clearance between it and the cabinet cutout.
Silicon new tweeter onto the old face plate.

Change the cabinet connectors to a pair of 5.2mm females. (Blue = Negative)

Put it all back together and done

Of the two pairs I have here, there are minor differences.
One has three screws to mount the tweeter to the cabinet, and the cabinet is a pure straight hole.
The other has four mounting screws and has 'ears' cut in the cabinet for the terminals.

Let the pics be worth a few hundred words

Please note.
I am not the one that dug the tweeter out by the rim with a screwdriver.
The damage was already there long before my friend bought them.
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File Type: jpg 1.jpg (186.4 KB, 11 views)
File Type: jpg 2.jpg (260.0 KB, 11 views)
File Type: jpg 3.jpg (235.2 KB, 11 views)
File Type: jpg 5.jpg (139.9 KB, 11 views)
File Type: jpg 6.jpg (209.7 KB, 6 views)
File Type: jpg 4.jpg (186.8 KB, 5 views)
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