High Efficiency Speaker Asylum

RE: Peavey SP1 and SP2 Project Ideas..UPDATE, Plus these new weird things..?

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Bill Fitzmaurice

In Reply to: RE: Peavey SP1 and SP2 Project Ideas..UPDATE, Plus these new weird things..? posted by eleveniseven on October 14, 2023 at 09:55:34

That software will tell you exactly what the response is, but it takes time to learn how to use it. If your shop has echo problems I'd be using a line array, either SLA Pro or TLAH Pro, depending on the size of the room.

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RE: Peavey SP1 and SP2 Project Ideas..UPDATE, Plus these new weird things..? - eleveniseven 23:53:37 10/14/23 (3)
I opened up the CSP units. The CD Horn has an EV1823M midrange driver.
I'm curious, why on these does this cabinet have a 15 and a 12 sharing the same airspace, then a midrange CD horn ?
I'm thinking about putting these CD horns in my SP1's. Then adding a super tweeter up top. Is that dumb? These horns can be crossed as low as 300hz easily. SP1 woofer 55-300hz, CD horn 300-8khz, super tweet 8k and up ?
Thoughts, opinions?
Or would new drivers, and a tweeter on the big CSP cabs be a better end result ?
I have subs for low end, and DSP to do all the crossovers and such.
Lover of Folded Horns, Weird Gear, and Hifi. I also play bass..dont hate me for that.
- That was Peavey's first entry in the pro sound market - Alpha Al 17:54:02 10/15/23 (0)
  CSP stood for "Commercial Sound Projector". They were made in the mid to late 70's. Before that, their PA cabs were columns.
  I always questioned why they used a 15" and a 12" sharing the same airspace as well.
  If I'm not mistaken, the crossover was a simple High-Pass filter for the horn, and the woofers ran fullrange.
  The HF driver was an EV 1823M, basically a siren driver with not much response above 8kHz..
  It was a midrange screamer.
  
  Edits: 10/15/23
- RE: Peavey SP1 and SP2 Project Ideas..UPDATE, Plus these new weird things..? - Bill Fitzmaurice 06:02:02 10/15/23 (1)
  If it has a twelve and fifteen sharing the same rear chamber air space it means the designer didn't know what he was doing. You might be able to salvage it by loading it with a pair of twelves, but it's probably not worth the effort.
  - RE: Peavey SP1 and SP2 Project Ideas..UPDATE, Plus these new weird things..? - eleveniseven 07:01:34 10/15/23 (0)
    Thank you Bill. I kind of suspected as much. Good news is, I have plenty of parts and cabs. I can surely build something good from the rest of the stuff. Should be fun.
    Lover of Folded Horns, Weird Gear, and Hifi. I also play bass..dont hate me for that.

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