Downfiring

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kirktcashalini

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Joined: November 13, 2005

Location: United States

Posted: December 14, 2005 at 6:42 PM / IP Logged

hey, I am building a new box for my blazer and I need info about diwnfiring. I vaugly remember a website where you could put in xmax, qts, vas, whatever was needed to see if the speaker was suitable for downfiring. I was wondering if anyone knew where that site was again. And experiences about downfiring, whether they liked it or not. Thanks alot. Probablyyyyy a Eclipse Titanium 12".

99 Blazer LT. Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)

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DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: December 14, 2005 at 6:49 PM / IP Logged

https://www.the12volt.com/installbay/forum_posts.asp?tid=61977&KW=sag

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kirktcashalini

Silver - Posts: 492

Joined: November 13, 2005

Location: United States

Posted: December 14, 2005 at 6:51 PM / IP Logged

boo-yah thanks DYohn

any info on eclipse titanium subwoofers from personal experience anyone?

99 Blazer LT. Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)

stevdart

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Posted: December 14, 2005 at 10:01 PM / IP Logged

You want to hide a Titanium by using the downfiring method? She's pretty! ...and may be offended if you don't let her show her face. And I've heard she likes a lot of power.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

coppellstereo

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Joined: November 21, 2005

Location: United States

Posted: December 15, 2005 at 2:29 AM / IP Logged

I have one, I am pushing a 12" with a JBL BP1200.1 It is wired in parallel and down to 1.9ohms. This is a little over 1200watts. She does love it! And yes, she is pretty!

What makes one sub better suited for downfiring than another? And what are distinct advantages of downfiring?

stevdart

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Joined: January 24, 2004

Location: Pennsylvania, United States

Posted: December 15, 2005 at 8:20 AM / IP Logged

Gravity sag. Some of the T/S parameters that tell of a speakers suspension and xmax (among others) are used to calculate how gravity will cause the cone to sag. 5% of excursion is the limit. Anything above that may result in poor performance. Benefits: stealth installation, cosmetics (if you don't want to see the speaker), and possibly might fit some situations better than side-firing would. More often used in home audio for a "furniture" look.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

coppellstereo

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Joined: November 21, 2005

Location: United States

Posted: December 15, 2005 at 1:01 PM / IP Logged

Makes sense to me. Will it affect responsiveness?

A guy at a speaker shop convinced my friend that it would keep his trunk from rattling

kirktcashalini

Silver - Posts: 492

Joined: November 13, 2005

Location: United States

Posted: December 15, 2005 at 7:21 PM / IP Logged

my vehicle got broken into and they stole my old setup, shattered the window and all that. and yes, they look beautiful. but i am now worried about theft and would rather someone see a big box with nothing on it in my trunk that is built in and fabbed around all the contours with a downfiring sub, than a sub and say hey that looks good...

pissed me off, and also sucks cause building downfiring boxes is alot more difficult, especially the design i have in mind.

99 Blazer LT. Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)

oxygen65

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Joined: August 19, 2005

Location: United States

Posted: December 18, 2005 at 4:19 AM / IP Logged

i have a 95 blazer and i has 4 premiers in a downfirering box and not only does it save a lot of space but it sounds really good too

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Downfiring

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