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Selenium 12co1P for center and rears to match my 7 PI's [message #45906]

Mon, 29 November 2004 09:38

Brian Jefferys
Messages: 19
Registered: May 2009

Chancellor

I would like to use these motors in my new project for a center and rear channels to match my Selenium 7 Pi's. Any thoughs on which cabinet design to choose. I am a little constrained on size for the center channel as I have a screen hung above my fireplace for my projector. I have about 13" from the top of my screen to the ceiling. I can place it in front of the fireplace on the floor though. It would be centered between 2 2226h's in cabinets to get the lowest possible Hz.

I also would like to know if anyone is using false corners with the 7 Pi's. The way the room is laid out no longer give me 3 Ft. on either side of my horns.

Brian

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Re: Selenium 12co1P for center and rears to match my 7 PI's [message #45907 is a reply to message #45906]

Mon, 29 November 2004 09:45

Wayne Parham
Messages: 18786
Registered: January 2001

Illuminati (33rd Degree)

What's the T/S specs on those Seleniums?

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Re: Selenium 12co1P for center and rears to match my 7 PI's [message #45908 is a reply to message #45907]

Mon, 29 November 2004 10:21

Brian Jefferys
Messages: 19
Registered: May 2009

Chancellor

Cut and paste from the Selenium spec sheet.

SPECIFICATIONS
THIELE-SMALL PARAMETERS (WOOFER)
Nominal diameter . 305 (12) mm(in)
Nominal Impedance. 8
Minimumimpedance @ 236 Hz. 6.9
Power handling
Musical Program. 500 W
Sensitivity (1W/1m) averaged from 100 to 10,000 Hz. 94 dB SPL
Frequency response @ -10 dB. 55 to 18,000 Hz
Fs. 47 Hz
Vas. 93 (3.28) l (ft )
Qts. 0.46
Qes. 0.52
Qms. 4.49
o (half space). 1.79 %
Sd. 0.0510 (79.1) m (in )
Vd (Sd x Xmax). 63.75 (3.89) cm (in )
L. 12.8 Tm
Re. 6.3
Le @ Fs (voice coil inductance @ Fs). 2.287 mH
Le @ 1 kHz (voice coil inductance @ 1 kHz). 0.863 mH
Le @ 20 kHz (voice coil inductance@20 kHz). 0.334 mH
Red @ Fs. 0.16
Red @ 1 kHz. 2.26
Red @ 20 kHz. 30.03
Krm. 1.191 m
Kxm. 13.833 mH
Erm. 0.863
Exm. 0.683
Xmax (max. excursion (peak) with 10%distortion). 3.0 (0.12) mm(in)
Xlim(max.excursion (peak) before physical damage). 9.5 (0.37) mm(in)

Brian

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Re: Selenium 12co1P for center and rears to match my 7 PI's [message #45910 is a reply to message #45908]

Mon, 29 November 2004 11:15

Wayne Parham
Messages: 18786
Registered: January 2001

Illuminati (33rd Degree)

That speaker looks really good in bass-reflex cabinets from 0.4ft3 to 1.6ft3 tuned to 40Hz. PiAlign suggests 0.5ft3 tuned to 38Hz with a 1" long port, 0.75" diameter or 0.5" x 0.875" rectangular.

Looks like it will make a great little speaker.

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