I saw a plan, a few year back, for a custom sub designed for a mid-size
Ford. I think it was a Thunderbird.
The article proudly proclaimed that the finished product produced "seat
movement and blurred vision".
And you thought driving while talking on a cell phone was dangerous.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Rex Waygood
Sent: Thursday, September 20, 2007 12:16 PM
To: [log in to unmask]
Subject: Re: [TN] SV: [TN] NTC:subwoofer
Some time ago I helped my young next door neighbour install a PA and
speakers in his car. It used power cables as thick as my fingers. A week
later I asked him how his stereo was. He proudly proclaimed that it had
caused his rear view mirror to fall off the windscreen. So there is a new
measure of sound pressure level, the rear view mirror. He didn't seem
worried about how it sounded, maybe he couldn't hear it.
Rex Waygood
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dave Seymour
Sent: 20 September 2007 17:11
To: [log in to unmask]
Subject: Re: [TN] SV: [TN] NTC:subwoofer
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-18
05db-298304.php
Here is another link:
http://www.crutchfieldadvisor.com/ISEO-rgbtcspd/reviews/20030826/db_drag_rac
ing.html?print=1&page=all
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
>
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