backward subs

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=81326
Printed Date: July 14, 2025 at 6:46 AM

Topic: backward subs

Posted By: joejo1020
Subject: backward subs
Date Posted: August 07, 2006 at 7:16 PM

why woulkd you face subs into an inclosure? what is the effect?

Replies:

Posted By: the12volt
Date Posted: August 07, 2006 at 7:29 PM

Hi joejo1020, please read the topics found here: https://www.the12volt.com/installbay/search.asp?KW=inverted&SM=1&SI=TC&FM=0&OB=1.

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Posted By: DYohn
Date Posted: August 07, 2006 at 9:20 PM

A "backwards sub" actually works by sucking the air out of the vehicle, creating negative SPL instead of positive (you may have seen figures like -100db?) A normal sub pressurizes the vehicle and pushes your eardrums in, while a backwards sub sucks your eardrums out. If you have a perfectly matched positive and negative sub, your eardrums don't move and there is no sound even though you may be using 5000 watts of amplifier power! It is an amazing effect that some high-end audiophile types call "audio stasis." Although you cannot actually hear anything, the sense of being pressurized creates a feeling of unease. It's a technique used quite often in movie theaters, especially with horror films. It can make the IASCA judge give you twenty extra points "just because." posted_image

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Posted By: cloak559
Date Posted: August 07, 2006 at 9:28 PM

*chuckle*

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'89 Mercedes-Benz 300E
Pioneer DEH-5900UB
(2)RE Audio SX 10"s
(1)US Amps MD3D
3ft^3 @ 37Hz

Blowing up in a car accident doesnt worry me, as long as I'm putting out some major dB's when I die...

Posted By: haemphyst
Date Posted: August 07, 2006 at 10:13 PM

Damn, DYohn... you need more sunlight!

Funny, but still, there's a WHOLE world out there!

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Posted By: DYohn
Date Posted: August 08, 2006 at 12:26 AM

haemphyst wrote:

Damn, DYohn... you need more sunlight!

Funny, but still, there's a WHOLE world out there!

Sunlight? Is that like what happens outside during the day?!? No way, can't handle that. posted_image

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Posted By: joejo1020
Date Posted: August 08, 2006 at 12:52 PM

thnx for the info