A Thread for those interested in PPSL enclosures - Page 51 - diyAudio
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Old 28th July 2013, 01:28 AM   #501
DrDyna is offline DrDyna  United States
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Quote:
Originally Posted by tb46 View Post
Hi GM,

I think DrDyna is talking about something like this (plus the Heil radiator on top):

Regards,
Yep, that's it, but in my head it was the lower two sections with the Heil up top.

Edit: or 3 sections...I don't know, I haven't done quite as much research on these as I probably should have, so I haven't checked things like..."how big the slot needs to be to be usable up to xxxxx cycles".
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Last edited by DrDyna; 28th July 2013 at 01:35 AM.
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Old 28th July 2013, 01:36 AM   #502
tb46 is offline tb46  United States
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Hi DrDyna,

: "...in my head it was the lower two sections with the Heil..."

Well, while you're at it, why stop there? :-) As to the slot size: AkAbak.

Regards,
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Old 28th July 2013, 01:40 AM   #503
DrDyna is offline DrDyna  United States
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Quote:
Originally Posted by tb46 View Post
Hi DrDyna,

: "...in my head it was the lower two sections with the Heil..."

Well, while you're at it, why stop there? :-)

Regards,
I know right, I have an overactive imagination when it comes to new and interesting speaker designs, by basement is littered with random trial and error remains...

Quote:
Originally Posted by tb46 View Post
As to the slot size: AkAbak.
Akabak scares me a little. I suppose one day I'll have to sit down and try to learn how to use it.
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Last edited by DrDyna; 28th July 2013 at 01:42 AM.
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Old 28th July 2013, 02:28 AM   #504
tb46 is offline tb46  United States
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Hi DrDyna,

Start with a well known model in Hornresp (AkAbak doesn't like Par for the flare rate), then use David's Export AkAbak Script, and you're of to the races.

Regards,
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Old 28th July 2013, 03:35 AM   #505
GM is online now GM  United States
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Ah! Not too sure I'd want the mid-tweeter doubled up unless the rear driver's HF is rolled off, but otherwise I can't think of a good reason not to try it if you have the drivers. BTW, there is [was?] a company making a high end variant of this a decade or so ago, but don't recall the name now.

GM
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Old 15th October 2013, 02:28 PM   #506
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Hi guys,

I thought about starting my own thread, but figured I may as well post something here first.

I'm thinking of making a PPSL enclosure with a pair of JBL GTO1214s, for PA use. Enclosure volume ~90-100L, port tuning around 30-35Hz. I've seen a standard ported design for Eminence Lab12s that follows similar specification, so I figure I'm not totally off the mark here.

I'm thinking of running the JBLs in parallel off a single channel off a Behringer EP1500, as I've found a good deal on one that has one channel blown.

I like the looks of the dual-15" sub at the start of the thread, and hope to do something similar.

Input would be appreciated

Chris
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Old 15th October 2013, 03:33 PM   #507
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After 506 posts, what type of input are you looking for?
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Old 15th October 2013, 10:28 PM   #508
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Hi Art,

I was hoping to find out if the general idea* of using car subs in a PA/party system was reasonable: I'm aware that these are rather heavy cones, but at the same time I suspect that I could get quite a lot of output for not-much money (I already have the drivers). The cone area of a pair of these drivers is roughly that of an 18"er, and these'll do about 1/2" of one-way excursion cleanly.

*it is just musing at this point: I could sell the drivers on and put the money toward a PA driver. I think I'd struggle to get similar frequency response in a relatively small cabinet, though.

Perhaps I should start my own thread on this?

Chris
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Old 15th October 2013, 11:02 PM   #509
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"Perhaps I should start my own thread on this?"

Might be a good idea, this one is rather long.
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Old 16th October 2013, 07:34 PM   #510
Scott L is offline Scott L  United States
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Default create saw dust !

It would be nice to see someone else (besides the regulars) actually build one and share the results.
I just built a pair based on my own "inside-out" theory. To be tested over the next few days.
As reccomended, I'll also start a new thread, because they aren't exactly ppsl.

Last edited by Scott L; 16th October 2013 at 07:36 PM. Reason: mis-spelling
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