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SPL Gains!! Updates @page 30 (routing the port)


fecupe2001

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Just to throw this out here. A friend of mine recently came into some money and went out and broke the bank with a home theater system. He bought B&W speakers and I noticed that they all have dimples on their flared ports. Not sure what the purpose of this is or what it does in practice, but if a company like that does it there may well be some merit to the idea:

bw-htm.jpg

In other news I was inspired by a few of the ideas in this thread and built a new box right after using some strategicaly placed flares. I missed my tuning by about 10hz on the low side, but it turned out to be the best sounding box I've ever built. It was total fail on the meter since it brought my tuning down about 16/17 cycles below my proper peak, but was definitely worth the wood.

The dimples serve the same purpose as they do on a golf ball... less air drag. I believe I saw Mythbusters do an experiment but they used a car, covered it in clay, put a bunch of dimples on it (it looked like a car golf ball pretty much) and it did have less wind resistance and better gas mileage.

7w1lnOR.jpg

2004 Bagged Trailblazer

(4)18" Sundown Nsv3s
(4) Taramps HD10000s, Taramps DSP3000, Lanzar opti 250x2, AB 100x4
(2)DC power SP 270s, (14)XS Power d3100s, (1)d6500

 

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In my opinion, the easiest way to find about about this, it´s someone that owns a TL and have some free time, can buy a regular 4" aeroport and a 4" aero with dimples, and test them against each other on a box that uses a single 4" aero, that should be nice, i can´t do it since i´m outside of the US and wold be very expensive for me :(

I´m the SPL Gains topic creator!! wanna get louder?? check this: SPL Gains. Panamenian 2009 & 2010 & 2014 Bass Race 149.9 Champion!

2 15" subs and a 2K wired at 1 ohm, http://www.stevemeadedesigns.com/board/topic/167788-fecupe2001-2-15s-on-a-2k-video-on-page-3/

8 Massive 15" subs and small power, http://www.stevemeadedesigns.com/board/topic/179296-fecupe2001s-8-15s-4th-order-bandpass-wall/

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I'm directly across from Ft lauderdale. Basically between Miami and Tampa. It's Ft Myers FL. I could also get JBL Camry to meet up with us and give you a demo of the Punisher Metro. That car does over 150db @25hz!

54.4 @24hz with the two bc3500's ;)

wow, that went up a lot with more power. :drink40:

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I'm directly across from Ft lauderdale. Basically between Miami and Tampa. It's Ft Myers FL. I could also get JBL Camry to meet up with us and give you a demo of the Punisher Metro. That car does over 150db @25hz!

54.4 @24hz with the two bc3500's ;)

You, sir, are BigPimpin Approved.

Do you have a build log?

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I'm directly across from Ft lauderdale. Basically between Miami and Tampa. It's Ft Myers FL. I could also get JBL Camry to meet up with us and give you a demo of the Punisher Metro. That car does over 150db @25hz!

54.4 @24hz with the two bc3500's ;)

You, sir, are BigPimpin Approved.

Do you have a build log?

http://www.stevemeadedesigns.com/board/topic/36801-geo-metro-wall-build/page__p__523492__hl__%2Bpunisher+%2Bgeo__fromsearch__1#entry523492

Designs for

FisherCustomsLogo.jpg

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You're welcome to use mine for testing if you willing to make the drive. I'm in FT Myers

i may have to take you up on that. ill have to make 2 identical ports and have one dimpled.

1999 Audi A4 1.8T:::

4 - DC Level 3 10's in a 4th order

Rockford P6002 on Subs for now (3-3.5k coming eventually)

MB Quart ONX4.60 for Mids and Highs

Boston S50 Components in Front

Boston S65 Coaxials in Rear

40 Sq Ft of Second Skin Damplifier

Build Thread

UBL

1948 Plymouth

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  • 2 months later...

have you tried inverting the woofer i have had good luck with that in the past :popcorn:

90 honda civic lx 4 door

sony cd head unit

mmats mp5 eq/crossover/line driver

35 farad hybred cap

ppi sedona 430ix on mids/highs

hifonics brutus brz1700.1d @2 ohm 1200w rms

front/jl audio evo 6.5 components

rear/kove audio 2 way 5.25

subs/pioneer premier tsw3002spl 12x2 1000wrms ea 3000w peak

and a hi amp alt 160a

http://www.stevemead...0s-honda-civic/

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I didn´t tried on this topic, but i´ve done it in the past and i don´t see any difference on the TL, i guess you see a raise/drop on the termlab is just because of the displacement and that´s pretty much it, in other words, the change should be seen mostly on a subwoofer with a lot of displacement wich changes the internal space of the box a lot if you invert it :)

I´m the SPL Gains topic creator!! wanna get louder?? check this: SPL Gains. Panamenian 2009 & 2010 & 2014 Bass Race 149.9 Champion!

2 15" subs and a 2K wired at 1 ohm, http://www.stevemeadedesigns.com/board/topic/167788-fecupe2001-2-15s-on-a-2k-video-on-page-3/

8 Massive 15" subs and small power, http://www.stevemeadedesigns.com/board/topic/179296-fecupe2001s-8-15s-4th-order-bandpass-wall/

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