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-   -   Seeking advise on sub using a TCsound 12" sub (http://www.diyaudio.com/forums/subwoofers/86802-seeking-advise-sub-using-tcsound-12-sub.html)

arbourm 20th September 2006 01:38 AM

Seeking advise on sub using a TCsound 12" sub
 
HI,
I have been following this forum for quite a while ,now is my 1st post for advise.
I acquire a 12" OEM TCsounds driver with the TC9 motor.
The speaker is not broken, the following measurements were made :
Fs : 29 Qm : 5 Qe : .47 Qt : .43 VAS : 50l
Re : 3.3 Sd : 490cm2 BL : 16.7
Xmax : In the 25mm one way
3"VC 8" single spider

Similar drivers sharing this motor have a power rating of 500-700 watts continuous.

Simulating with Unibox and subsim shows that i will need 1400 watt rms to reach full
excursion in closed box 1cuft or vented box of 2-3 cuft Fb=21hz.SImulation also shows +11db at 20hz closed box vs vented .
Application is for home subwoofer.

I will be using a behringer DCX2496 for x-over. Do not have the amp yet.

i am wondering if 1400W would damage the loudspeaker ?

Is it typical to need such power to reach 25mm of excursion ?

Would you suggest a closed box or 2cuft Passive or 3cuft vented ?

Any suggestion on construction ? I am planning to use mdf, glued with woodglue and biscuits.

Regards
MIchel

Lothar34 20th September 2006 02:01 AM

You sure the Vas is only 50L?

Relax 20th September 2006 03:27 AM

That power rating is for thermal power handling no doubt. So your 1400 watts would make it light up.

BAM 22nd September 2006 01:43 PM

I'd go ahead and use the Parts Express 1000W subwoofer amplifier. They have a tabletop version and a plate-mount version. You're in Canada, so I'm sure that there wouldn't be much trouble in obtaining this amplifier.


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