Front loaded horn for 3x2508s - Car Audio Classifieds!
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  #1  
Old 03-02-2012, 10:02 PM
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Default Front loaded horn for 3x2508s

Design request from Area51 here once again, this time for his three soon-to-arrive Digital Designs 2508 woofers.

Kirk will be listening to mostly rock/jazz type of music and prefers a tight punch in his substage. After hours of modeling with these little guys, a seemingly simple front loaded horn was determined to be best fit.
In this case, this FLH will by no means produce the most output possible, but will by all means produce the best balance of sound quality/"punch", output, and response for what he likes in his music.



Fun fact, group delay is rather tight in this design and at its highest point never even reaches 18ms. Many enclosure peak 40-50ms+. Thats horrible! To put it in perspective, thats like listening to your speakers over 15ft away! At low frequency, our ears perceive sound primarily through timing as opposed to intensity (Read: ITD) like higher frequencies. Every bit counts!

Look forward to a build log
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Old 03-02-2012, 10:06 PM
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VERY Niceeee sir ... wish i was building this ...lol but the 4-sa8v2 will be fun !!!
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Old 03-03-2012, 07:38 PM
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I can't wait to build this but I have to build the other one first . Evan, would it hurt performance if I installed a plexiglass window on the front? Should I just put a 3/4" thick plexi instead of the mdf? What would be the best way to show the subs?
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Old 03-03-2012, 07:50 PM
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Quote:
Originally Posted by area51 View Post
I can't wait to build this but I have to build the other one first . Evan, would it hurt performance if I installed a plexiglass window on the front? Should I just put a 3/4" thick plexi instead of the mdf? What would be the best way to show the subs?

shouldnt make a difference .. but will proly be a lil costly ...
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Old 03-03-2012, 10:05 PM
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What if I create a window from the back with 1/2" plexi?
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Old 03-03-2012, 10:15 PM
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I wouldnt do anything that would change the surface of the inside since that peice is what the subs are loading off of. The way I would do it is just cut a hole, put plexi in the hole, then put a trim peice around it on the front that would hold it in place. Then silicone the edges on the inside for a good seal.
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I have tested that amp about a bazillion times. I know what it does clean, clipped, dirty, loaded, unloaded, wired down, low voltage, good voltage, after it hot, while it's cool, on caps, on batts, where it protects, what's thermal limits are and just about anything else anyone would care to know about it.

But thanks for chiming in. Your opinion is duly noted.
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Old 03-04-2012, 12:56 PM
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Matt is correct, you may place a window/plexi where every you like - just dont change the inner dimensions/geometry!
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Old 03-04-2012, 01:12 PM
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Okay, I think I understand. A couple ways I was thinking of tackling this is to mark the whole front wall a sheet of clear 3/4" acrylic plexiglass or cut out a hole just big enough for the subs to be seen then with the router and a rabbet bit create a lip for a 1/2" window sheet of acrylic to seal against.
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Old 03-04-2012, 02:01 PM
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would be fine, just do it on the inside of the panel so it is flush and will look better IMO.
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Old 03-04-2012, 02:30 PM
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Great, I'll do one of those then. Thanks
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