Electro Voice compression driver

[walloffound]

Hey, I’m looking for info on this EV tweeter driver they are labeled ‘KUSTOM’ I’m looking for specs or any info or experience with these. Does anyone know what horns they were designed for?

 

[bowtie427ss]

OEM version 1823, EV sold them to Kustom and a few other manufacturers.

Does anyone know what horns they were designed for?

That more or less depends on the application and intended bandwidth they're going to be used at.

 

[Dr. Beaker]

For reference...

https://products.electrovoice.com/binary/1823 EDS.pdf

 

[elitopus]

I see you got an Altec 288 in that haul as well. Sweet.

 

[walloffound]

I see you got an Altec 288 in that haul as well. Sweet.

Yes that the part I what I was most excited to find, I need it for a horn that I have. Planning to build a killer mono setup with a altec horn

 

[walloffound]

Thanks guys, looks like I have an EV midrange, I’ll see what project I can try this in

 

[elitopus]

Nice! I have a pair of 805b with 1.4” to 1” adaptors. As well as a single 803 and 203. Always looking for a mate for those. Maybe you’ll find a mate for your horn. Well, the hardest thing is find a cheap mate. Expensive ones are easy to find on eBay. Lol.

 

[walloffound]

Nice! I have a pair of 805b with 1.4” to 1” adaptors. As well as a single 803 and 203. Always looking for a mate for those. Maybe you’ll find a mate for your horn. Well, the hardest thing is find a cheap mate. Expensive ones are easy to find on eBay. Lol.

Yep, im looking for an Altec 30166 throat, reminds me I should post a WTB in barter town, maybe someone has one

 

[loudnoises]

Thanks guys, looks like I have an EV midrange, I’ll see what project I can try this in

They came on 8hd horns in more than a few applications. Sound great to me with the phenolic diaphragms. Will do 800hz to 7k on the right horn. Says it'll do 500hz but ymmv.

You can get adapters to use them on the 511 horns and others.

 

[elitopus]

I’ve always wondered how those Kustom horns shown in the first pic sound. They look very similar to an 811, just thread on drivers instead of bolt on

 

[walloffound]

I’ve always wondered how those Kustom horns shown in the first pic sound. They look very similar to an 811, just thread on drivers instead of bolt on

Yeah they are shorter and have threaded throat end. All cast out of one piece instead of welded together. A horn expert I know thinks they are early versions of 811. He thinks they sound better than the later 811 because of the shorter throat length. I will have to see what they sound like

 

[Tom Brennan]

They came on 8hd horns in more than a few applications. Sound great to me with the phenolic diaphragms. Will do 800hz to 7k on the right horn. Says it'll do 500hz but ymmv.

In the Sentry IV speaker, using the SM 120A mid horn, EV ran the 1823 driver from 400hz to 3500hz.

 

[GordonW]

In the Sentry IV speaker, using the SM 120A mid horn, EV ran the 1823 driver from 400hz to 3500hz.

Yep, if the horn is big enough, the 1823 driver will handle 400Hz no problem. That's because of the rugged, very tractable, phenolic diaphragm.

OTOH- however, also due to the phenolic diaphragm- they really don't go above 10K very well. Significant roll-off up there. 7K is a good crossover point for one of those.

Regards,
Gordon