LISTSERV - TECHNET Archives - LISTSERV.IPC.ORG

TECHNET Archives

September 2007

TechNet@IPC.ORG

	LISTSERV Archives
	TECHNET Home
	TECHNET September 2007

	Log In
	Register

	Subscribe or Unsubscribe

	Search Archives

Options:	Use Monospaced Font Show Text Part by Default Show All Mail Headers
Message:	[<< First] [< Prev] [Next >] [Last >>]
Topic:	[<< First] [< Prev] [Next >] [Last >>]
Author:	[<< First] [< Prev] [Next >] [Last >>]

Subject:	Re: NTC:subwoofer
From:	John Burke <[log in to unmask]>
Reply To:	TechNet E-Mail Forum <[log in to unmask]>, John Burke <[log in to unmask]>
Date:	Wed, 19 Sep 2007 15:09:52 -0700
Content-Type:	text/plain
Parts/Attachments:	text/plain (48 lines)

Actually Inge, any bigger than that you might want to start using car
batteries instead of caps...............8-)

 
 
John Burke
 
(408) 515 4992

-----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

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-615-7100 ext.2815
-----------------------------------------------------

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------

ATOM RSS1 RSS2

LISTSERV.IPC.ORG