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Subject:	Re: NTC:subwoofer
From:	"Whittaker, Dewey (EHCOE)" <[log in to unmask]>
Reply To:	TechNet E-Mail Forum <[log in to unmask]>, Whittaker, Dewey (EHCOE)
Date:	Wed, 19 Sep 2007 14:02:16 -0700
Content-Type:	text/plain
Parts/Attachments:	text/plain (50 lines)

Yes, keep it out of the way when they hammer it.
Dewey

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Hfjord
Sent: Wednesday, September 19, 2007 1:57 PM
To: [log in to unmask]
Subject: [TN] NTC:subwoofer

Audio techies,
I've built a subwoofer with a 15" 400 Watt loadspeaker (4 Ohms). Bought
a
200 Watt low frequency 12 V amplifier. For that one, I built a 12 VDC
power
supply with 15 A toroid, regulator, OP amplifier and a backup consisting
of
totally 100,000 uF on the output. What is your experience? Will these
caps
be enough to take the short power tops in Space War or the enormous
sound
effects in Matrix or Jurassic Park? Any thumb rules or maths?
/Inge

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