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Replacement 1" Screw on Compression drivers

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Ajsski99 View Drop Down
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    Posted: 24 February 2021 at 8:16pm
Hi all, posting this on behalf of a friend.

My buddy has just got hold of some Phonic 15" PA speakers he plans on using as booth monitors, (the SE715's I believe), unfortunately though both of the compression drivers are broken.

For replacements, I've been looking at the Fane CD130's, but cannot seem to find them in stock anywhere.

What other drivers would you guys recommend as replacements? Must be 1" screw on otherwise I suspect they wont fit within the box, and the horn is threaded so must be screw on.

Also, will it be a drop in replacement? Or will I have to change the crossovers inside the boxes.

Cheers, Ajsski99


Edited by Ajsski99 - 25 February 2021 at 2:00pm
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GAZ. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GAZ. Quote  Post ReplyReply Direct Link To This Post Posted: 24 February 2021 at 11:15pm
You can buy adapters to convert 1” bolt on compressions to screw on. I think blue Aran sell them. This is ideal as you have a much greater choice of compression to choose from.
I have several pairs of cabs running fane CD 150 coupled to screw on horns.
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Ajsski99 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ajsski99 Quote  Post ReplyReply Direct Link To This Post Posted: 25 February 2021 at 12:00am
Just found them, thanks very much :)

Think I’m going to go with the Fane CD131, as the cabs are only going to be used as monitors. Do you know if I will have to change the crossover within the cabs? The 15” driver is rated at 8ohms if that helps.

Thanks, Ajsski99
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wikl109 Quote  Post ReplyReply Direct Link To This Post Posted: 25 February 2021 at 12:02am
Pretty certain that model was just a piezo for the top end so there probably isn't a crossover as such. Maybe a capacitor if you're lucky.
The horn may not even take a standard screw thread comp driver.
With buying x-overs and new drivers this could work out pricey.
Cheers, Chris.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GAZ. Quote  Post ReplyReply Direct Link To This Post Posted: 25 February 2021 at 8:08am
Yes, a quick google reveals these speaker had piezo drivers in, so indeed there will be very little in the way of crossover components in there. If you’re on a budget it might be wise to just buy replacement piezo units which will not require any further alterations and be considerably cheaper than buying compressions and appropriate crossovers.
Also if you do decide to upgrade and fit compressions, I had cd 130’s once and I didn’t like them. Very harsh sound. The cd 150 is a far superior unit.
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APW View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote APW Quote  Post ReplyReply Direct Link To This Post Posted: 25 February 2021 at 10:03am

The later SEM version definitely has a piezo, the SE version the is older version and is rated slightly higher power than the SEM version, the SE states the crossover frequency as 3.2Khz (way too high for a 15”!!) on the rear of the cabinet, I’m not saying the SE version definitely has a proper comp driver but without looking at what’s still inside the cabinet we are grasping at straws here….

Another thing to bear in mind, these things often sell for well under £100 per pair working (there is a single one on ebay currently for £12.00) , they are NOT worth putting £60 quid’s worth of comp drivers (£180 for the CD150 sugested above!!) + adapters + possible xovers into the chipboard/MDF cases.

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markie View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote markie Quote  Post ReplyReply Direct Link To This Post Posted: 25 February 2021 at 12:25pm
I have a few screw on compression drivers which can be very cheap. But of course you still have to sort some kind of crossover. Probably best to get a couple of  screw fit piezos.

I have used the ones below and they are quite good.



Edited by markie - 25 February 2021 at 12:26pm
If it's got wheels or tits it's gonna cost a fortune
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Post Options Post Options   Thanks (0) Thanks(0)   Quote APW Quote  Post ReplyReply Direct Link To This Post Posted: 25 February 2021 at 1:26pm

Terralec sell the same ones for £5.75 each inc delivery:
https://www.ebay.co.uk/p/1518641253



Edited by APW - 25 February 2021 at 1:33pm
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Ajsski99 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ajsski99 Quote  Post ReplyReply Direct Link To This Post Posted: 25 February 2021 at 2:07pm
Im pretty sure the tweeters in these boxes are indeed piezio tweeters.
There doesnt seem to be a "crossover board" either, just some capacitors and resistors (I assume?) hot glued to the bottom of the cab.
Here are some pictures of the inside.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote APW Quote  Post ReplyReply Direct Link To This Post Posted: 25 February 2021 at 2:12pm
Yep, they are the same as the ones posted in the links above by Markie and myself.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 25 February 2021 at 2:30pm
"The horn may not even take a standard screw thread comp driver."

No, I'm pretty sure that it uses the same thread. The piezo drivers linked to above will definitely have the same thread as your "srandard" 1" comp driver.   Smile

But as noted - really not worth doing...   Embarrassed




Edited by Earplug - 25 February 2021 at 2:31pm
Earplugs Are For Wimps!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote APW Quote  Post ReplyReply Direct Link To This Post Posted: 25 February 2021 at 2:42pm
They are probably worth spending 10 to 15 quid on but not much more!!


Edited by APW - 25 February 2021 at 2:43pm
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