RE: What is the best 30-300hz bass cab solution?

Posted by djk (M) on April 7, 2012 at 05:53:07

In Reply to: RE: What is the best 30-300hz bass cab solution? posted by ceriatone@gmail.com on April 7, 2012 at 01:43:44:

The Qts on that driver is a bit too low to be optimum, it can go to about 35hz.

The PPSL is preferred to be 6th order vented for minimum box size, maximum bass extension, and maximum efficiency.

A 2 cu ft 2nd order sealed box with an F3 of 30hz can only be 0.18% efficient (84.55dB).
A 2 cu ft 4th order vented box with an F3 of 30hz can only be 0.36% efficient (87.56dB).
A 2 cu ft 6th order vented box with an F3 of 30hz can only be 0.90% efficient (91.54dB).

The optimum Qts for a 6th order would be 0.312, other values will work, but there will be trade-offs.

Here is a plan for a 35hz 15" PPSL (Eminence KappaPro 15LF), the size would need to be larger for the BD-design 15.

A couple of different PPSL with Fc=31hz, 29hz, and 35hz:

http://i56.photobucket.com/albums/g196/dkleitsch/CoePA-2009.jpg

http://i56.photobucket.com/albums/g196/dkleitsch/COE08-3.jpg

http://i56.photobucket.com/albums/g196/dkleitsch/MilesAdamsBand3.jpg

A series of copies available in Europe from OHM using BMS drivers:

http://www.ohm.co.uk/images/ohm_pukk_sub_tower.jpg

General:

http://forum.speakerplans.com/topic45790_post464475.html#464475

A Thread for those interested in PPSL enclosures (Open in New Window)

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Follow Ups Full Thread

Topic - What is the best 30-300hz bass cab solution? - ceriatone@gmail.com 17:54:20 04/06/12 (24)

JBL 4719 - bassbinotoko 06:21:04 04/12/12 (0)

RE: What is the best 30-300hz bass cab solution? - djk 23:59:24 04/06/12 (22)

are there plans and build instructions available? - sunnysal 17:48:10 04/12/12 (2)

RE: are there plans and build instructions available? - djk 00:12:19 04/13/12 (1)

Thanks D! (nt) - sunnysal 15:40:15 04/17/12 (0)

Anything Bigger or Lower? - thetubeguy1954 14:36:45 04/07/12 (1)

RE: Anything Bigger or Lower? - djk 06:54:01 04/08/12 (0)

RE: What is the best 30-300hz bass cab solution? - weltersys 10:04:26 04/07/12 (4)

I have a good question........... - drlowmu 11:45:10 04/10/12 (2)

RE: I have a good question........... - weltersys 07:29:39 04/11/12 (1)

RE: I have a good question........... - drlowmu 09:18:46 04/12/12 (0)

RE: What is the best 30-300hz bass cab solution? - Inmate51 11:04:58 04/07/12 (0)

RE: What is the best 30-300hz bass cab solution? - Inmate51 08:29:08 04/07/12 (4)

RE: What is the best 30-300hz bass cab solution? - claudej1@aol.com 20:30:23 04/10/12 (2)

Sorry, - djk 23:55:16 04/10/12 (1)

RE: Sorry, - claudej1@aol.com 11:57:57 04/11/12 (0)

no problem:) - ceriatone@gmail.com 09:52:48 04/07/12 (0)

RE: What is the best 30-300hz bass cab solution? - ceriatone@gmail.com 01:43:44 04/07/12 (6)

RE: What is the best 30-300hz bass cab solution? - djk 05:53:07 04/07/12 (5)

What amp to drive the PPSL? - Frank Mena 06:54:02 04/08/12 (2)

RE: What amp to drive the PPSL? - Saturntube 08:21:42 04/08/12 (1)

RE: What amp to drive the PPSL? - weltersys 09:10:20 04/09/12 (0)

RE: What is the best 30-300hz bass cab solution? - ceriatone@gmail.com 06:53:36 04/07/12 (1)

Efficiency vs Sensitivity - djk 05:43:20 04/09/12 (0)

Follow Ups

RE: What is the best 30-300hz bass cab solution? - djk 05:53:07 04/07/12 (5)

What amp to drive the PPSL? - Frank Mena 06:54:02 04/08/12 (2)

RE: What amp to drive the PPSL? - Saturntube 08:21:42 04/08/12 (1)

RE: What amp to drive the PPSL? - weltersys 09:10:20 04/09/12 (0)

RE: What is the best 30-300hz bass cab solution? - ceriatone@gmail.com 06:53:36 04/07/12 (1)

Efficiency vs Sensitivity - djk 05:43:20 04/09/12 (0)

RE: What is the best 30-300hz bass cab solution?

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