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 Got metered today..

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Jeffrm
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PostSubject: Got metered today..   Sun Jun 10, 2012 4:16 am

Finally got some time with a termlab today and lets just say it wasnt what I expected. I did a 141.9db sealed on dash, but that number didnt change by opening windows or doors. Peaked at 46hz. Only thing that stumps me is my old box did a 143.*, and it was tuned differently, and it peaked at 46hz too. If I do a spl box should I tune around the 46hz? Also ill be upgrading my amp to a rd 3250 instead of my rd1750 which im hoping will help my score.
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jdlspl
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PostSubject: Re: Got metered today..   Sun Jun 10, 2012 7:31 am

That amp will keep you in 0-600 ?
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Jeffrm
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PostSubject: Re: Got metered today..   Sun Jun 10, 2012 9:20 am

No itll bump me up a class, 750w @ 4ohm, but thats ok with me.
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PostSubject: Re: Got metered today..   Sun Jun 10, 2012 10:17 am

Cool see ya at scrapin?
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sanman
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PostSubject: Re: Got metered today..   Sun Jun 10, 2012 10:44 am

maybe the vehicle likes the higher hertzzz so now try to tune for 55 and see if it jumps
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jdlspl
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PostSubject: Re: Got metered today..   Sun Jun 10, 2012 12:02 pm

My truck got better the higher I tune it.
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sanman
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PostSubject: Re: Got metered today..   Sun Jun 10, 2012 12:04 pm

if you meter 148@50

then 140@146


the law of average say higher is better
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BODEAN
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PostSubject: Re: Got metered today..   Sun Jun 10, 2012 12:13 pm

Try the mic in the floor as far into the kick as possible. do it on both sides. you in the truck and out. doors open. one door open. doors closed. windows open. one open etc. be surprised how much you gain when you get the right combination.
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sanman
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PostSubject: Re: Got metered today..   Sun Jun 10, 2012 12:28 pm

no matter what if it likes higher hetzzzz thats what you have to build for to find its peak
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BODEAN
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PostSubject: Re: Got metered today..   Sun Jun 10, 2012 12:45 pm

True dat.
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Jeffrm
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PostSubject: Re: Got metered today..   Sun Jun 10, 2012 4:02 pm

See whats crazy is it peaks at 46hz if I play a 50hz tone. Does anyone of yall know how to design a removable port?
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2003f150
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PostSubject: Re: Got metered today..   Mon Jun 11, 2012 9:19 am

Box volume and port size and length as well as vehicle all factor into where it will wanna peak at. Just tuning a port doesnt do it most of the time. Cool
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jdlspl
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PostSubject: Re: Got metered today..   Mon Jun 11, 2012 9:35 am

Try shrinking inside of box and test.
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twentyhurtz
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PostSubject: Re: Got metered today..   Mon Jun 11, 2012 10:30 am

My full size hated 49hz and loved 41hz, but your running an extended cab, but even then i have a friend with a wall in his and he peaks in the low 40's. Most people i know that compete in our body style full size chevy/gmc peak in the 40's.
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Jeffrm
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PostSubject: Re: Got metered today..   Tue Jun 12, 2012 3:45 am

See thats why I wanna do removable ports, so I can change up tuning
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2003f150
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PostSubject: Re: Got metered today..   Tue Jun 12, 2012 9:15 am

Jeffrm wrote:
See thats why I wanna do removable ports, so I can change up tuning

Removeable port wont always make the peak note change......
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Jeffrm
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PostSubject: Re: Got metered today..   Wed Jun 13, 2012 1:59 am

ive got this idea for a box. its a removeable port. 1 for daily and another for comps would this work
this is the yellow port


this is the red


this is the box
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Jeffrm
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PostSubject: Re: Got metered today..   Wed Jun 13, 2012 2:02 am

red port will mount to the yellow one. ive just gotta figure out how to attach to ports to the box while still making it removable
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sanman
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PostSubject: Re: Got metered today..   Wed Jun 13, 2012 10:39 am

does subs forward and ports up not work in a fullsized???????


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PostSubject: Re: Got metered today..   Wed Jun 13, 2012 11:02 am

sanman wrote:
does subs forward and ports up not work in a fullsized???????


yep
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Jeffrm
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PostSubject: Re: Got metered today..   Wed Jun 13, 2012 3:25 pm

Thats my dilemma now too. I wanna do what makes me loud
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PostSubject: Re: Got metered today..   Wed Jun 13, 2012 10:23 pm

Loud and sounding good usually is a trade off.
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Jeffrm
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PostSubject: Re: Got metered today..   Thu Jun 14, 2012 3:06 am

yeah ive figured that out, im not sure if i wanna build to just run in the lanes or do something in between so it will do better on the meter and still pick up lows confused confused
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PostSubject: Re: Got metered today..   Thu Jun 14, 2012 1:51 pm

I Have a tundra and mine did well with subs forward and port up! 3 15s ! I made a bolt on port tuned at 50 hrtz for everyday riding!
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Jeffrm
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PostSubject: Re: Got metered today..   Thu Jun 14, 2012 3:48 pm

How exactly did you do the bolt on port I like that idea
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Got metered today..
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