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Measuring@Headrest vs. Dash


Meka

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Im thinking my truck would rape a headrest metering.

THERE IS NO BUILD LOG!

1998 Chevy Silverado ext cab

Alpine CDA-9887

4 Team Fi 15s

2 Ampere Audio TFE 8.0

2 Ampere Audio 150.4

3 Digital Designs CS6.5 component sets

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8 XS Power d3400

6 XS power d680

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A Real Voltmeter not a piece of shit stinger.

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Im thinking my truck would rape a headrest metering.

I'd like to see it happen! :)

It's all install dependant.... But like what others have stated, generally headrest = lower frequency (MECA) & dash/sealed = higher frequency (dbdrag).

My Build Log- T E A M S U N D O W N A U D I O -

2013 DbDrag WF SS1-2 - 5th Place 154.6db

2013 MECA Mod3 CA State Final Champ 153.4db

Powered by: Sundown Audio

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Headrest would be about 8 inches in front of the port

THERE IS NO BUILD LOG!

1998 Chevy Silverado ext cab

Alpine CDA-9887

4 Team Fi 15s

2 Ampere Audio TFE 8.0

2 Ampere Audio 150.4

3 Digital Designs CS6.5 component sets

Dual Mechman 370XP Elite alternators inbound!

8 XS Power d3400

6 XS power d680

Second Skin

Stinger

Tsunami Wiring

Sky High

A Real Voltmeter not a piece of shit stinger.

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Share on other sites

Headrest would be about 8 inches in front of the port

You'll be surprise.... my 4th order wall port is about the same distance to the meter (port on driver side) and not much of difference in score vs sealed at the dash, just frequency.

My Build Log- T E A M S U N D O W N A U D I O -

2013 DbDrag WF SS1-2 - 5th Place 154.6db

2013 MECA Mod3 CA State Final Champ 153.4db

Powered by: Sundown Audio

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I had no damn clue on my first DB and Bass Race runs.

Like a tard, on my first ever Race run, i chose a song that peaked at 31, and did a drag burp 4 clicks from clean, at 32hz ..lol.

Live and learn . :suicide-santa:

Still took first place in both :shrug:

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I wish I knew more about this stuff.

Last comp I was told to burp 47hz after I did my sweep. That box sounded loudest at 37hz. This box sounds loudest at 33hz... So I wonder if my peak lowered.

My old YouTube channel : http://www.youtube.com/user/SwordLords1234?feature=mhee

My old build log : http://www.stevemeadedesigns.com/board/topic/161872-96-accord-b2-sundown-sky-high-dc-power-re-re-build-for-heatwave/page-37

My New Build - http://www.stevemeadedesigns.com/board/topic/207041-2016-mazda-6-sql-build/

2016 Mazda 6 Touring

JL Fix 86 - OEM signal correction

B2 prototype DSP 6to8

B2 Ref63 - 3 way active set

2 B2 Class H quattro's

1 B2 Zero.5R @.5

2 B2 HNv3 12 d2

B2 SLIP40 - Lithium in the trunk

Northstar Group 35 under the hood

100ft 2/0 welding cable

30ft 4ga welding cable

20ft 8ga welding cable

All stinger OFC speaker wire

Soundrive custom RCA's

Tons of attention to detail.... Can it be perfect?

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I wish I knew more about this stuff.

Last comp I was told to burp 47hz after I did my sweep. That box sounded loudest at 37hz. This box sounds loudest at 33hz... So I wonder if my peak lowered.

That's the annoying thing. Loud to the meter and loud to the ear don't always agree. I doubt you're going to want to burp at 33hz, but then again what do I know ??

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Put it on the meter is the only way to find out. A 150db @ 33hz is completely different vs 150@ 47hz. If you judge by ear, 33hz will sound twice as loud as 47hz.

My Build Log- T E A M S U N D O W N A U D I O -

2013 DbDrag WF SS1-2 - 5th Place 154.6db

2013 MECA Mod3 CA State Final Champ 153.4db

Powered by: Sundown Audio

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I compete in Meca and have for a couple years now. with all things being the same, 39-47hz is the sweet spot for Meca, seems to be what the meter likes at that position. I burp at 53hz in Meca and do a 150.4 (unofficially) and a 149.4 last season was my highest score. In IASCA, sealed on the dash I was .4-1 db louder, due to higher tuning. I consider under 30hz burping to be tuned low for Meca. Most of the competitors that have walls put the port on the driver side and meter at the driver headrest with passenger door open.

2011 Mitsubishi Outlander
Sony 712

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Alpine MRV-M500

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Well I guess good thing I'm not going to be competing officially. However I will have burp and music numbers after TD. burp numbers off my usaci CD. And I got a few songs I wanna see what I hit.

My old YouTube channel : http://www.youtube.com/user/SwordLords1234?feature=mhee

My old build log : http://www.stevemeadedesigns.com/board/topic/161872-96-accord-b2-sundown-sky-high-dc-power-re-re-build-for-heatwave/page-37

My New Build - http://www.stevemeadedesigns.com/board/topic/207041-2016-mazda-6-sql-build/

2016 Mazda 6 Touring

JL Fix 86 - OEM signal correction

B2 prototype DSP 6to8

B2 Ref63 - 3 way active set

2 B2 Class H quattro's

1 B2 Zero.5R @.5

2 B2 HNv3 12 d2

B2 SLIP40 - Lithium in the trunk

Northstar Group 35 under the hood

100ft 2/0 welding cable

30ft 4ga welding cable

20ft 8ga welding cable

All stinger OFC speaker wire

Soundrive custom RCA's

Tons of attention to detail.... Can it be perfect?

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Share on other sites

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