TECHNET Archives

September 2007

TechNet@IPC.ORG

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 >>]

Print Reply
Subject:
From:
Dave Seymour <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Dave Seymour <[log in to unmask]>
Date:
Thu, 20 Sep 2007 12:08:53 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (116 lines)
Playing with car stereo myself.
These guys have the whole sound pressure thing down.

Windows re-enforced, doors screwed down submarine style.
NO ONE IN THE CAR. Remotely controlled.

180.5 db

http://gizmodo.com/gadgets/world-record/car-subwoofer-world-record-set-at-1805db-298304.php

dave

Hfjord wrote:

>I'll far from utilize those watts, maybe just milliseconds 
>/Inge
>
>-----Ursprungligt meddelande-----
>Från: TechNet [mailto:[log in to unmask]] För Ahne Oosterhof
>Skickat: den 20 september 2007 17:18
>Till: [log in to unmask]
>Ämne: Re: [TN] NTC:subwoofer
>
>400 Watt and a 4 Ohm speaker?!?  Make sure you have high temperature
>insulation on the speaker cables and watch out for the broken window glass.
>That's why Philips made 400 and 800 Ohm speakers. Still got some.
>
>Ahne.
>
>
>-----Original Message-----
>From: TechNet [mailto:[log in to unmask]] On Behalf Of Hfjord
>Sent: Wednesday, 19 September, 2007 13:57
>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
>-----------------------------------------------------
>
>---------------------------------------------------
>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
>-----------------------------------------------------
>
>  
>

-- 
Dave Seymour, CID+
Catapult Communications Inc.
800 Perimeter Park Dr, Suite A
Morrisville, NC 27560

Direct: (919)653-4249
Main: (919)653-4180
Fax: (919)653-4297

[log in to unmask]






*********************************************************************************************************
"This e-mail (and any attachments) is confidential and privileged information of Catapult Communications"
*********************************************************************************************************

---------------------------------------------------
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