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BlueIce
 Post subject: Sub pullin inwards
PostPosted: Sun Feb 06, 2005 2:26 am 
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punchin NOS
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fellahs meh hoss jus did a brand new install , d heart of d system is a premier spl2000 in about a 3cubic enclosure(not sure) and d sub is powered by a boss 3000watt amp (Boss Audio IQ3KD.1)

and i notice he sub suckin inwards and it not soundin as loud as others i have heard, wha yuh think causing that????


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RaLLiArT
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PostPosted: Sun Feb 06, 2005 3:23 am 
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check back the wiring on the sub...
is it in the recommended enclosure!!


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Doctor X
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PostPosted: Sun Feb 06, 2005 3:27 am 
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yea i sure its the wiring !!!!
i accustomed to that kinda sheit
:mrgreen:


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Puff
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PostPosted: Sun Feb 06, 2005 3:47 am 
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yeah... try switching the positive and negative wires connected to either the amp or the sub..


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747 TECHNOLOGIES
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PostPosted: Sun Feb 06, 2005 9:59 am 
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reverse polarity lol, wiring must of been opposite or some'n


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SR
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PostPosted: Sun Feb 06, 2005 11:38 am 
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bad box design


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Sully
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PostPosted: Mon Feb 07, 2005 2:47 pm 
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Quote:
i accustomed to that kinda sheit


That's a bit frightening.


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Puff
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PostPosted: Mon Feb 07, 2005 2:51 pm 
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hahaha fuh real eh! :)
that is disturbing!!!!


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adam_ant_tt
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PostPosted: Mon Feb 07, 2005 10:30 pm 
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if de amp bridged, it Could be that one chanel not workin good ( or not at all....)


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BlueIce
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PostPosted: Mon Feb 07, 2005 11:13 pm 
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punchin NOS
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Quote:
bad box design

i have a feelin is that
friday we go try and sort it out . thanks


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SR
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PostPosted: Mon Feb 07, 2005 11:38 pm 
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try the sub on individual channels on the amp to confirm if the channel has a problem or not


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Puff
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PostPosted: Tue Feb 08, 2005 12:38 am 
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isn't the Boss Audio IQ3KD.1 a class D amp? mono output?


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747 TECHNOLOGIES
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PostPosted: Wed Feb 09, 2005 6:11 pm 
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that box you have dey ice, is a typcal box for a 12", is like 2.0CF right? and them kickers is 2 or 400rms?


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HCCA
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PostPosted: Sat Feb 12, 2005 10:06 am 
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I had a problem like that once, I was told that the amp was underpowering the sub.


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BlueIce
 Post subject:
PostPosted: Sat Feb 12, 2005 10:25 am 
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punchin NOS
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Quote:
isn't the Boss Audio IQ3KD.1 a class D amp? mono output?

correct

Quote:
that box you have dey ice, is a typcal box for a 12", is like 2.0CF right? and them kickers is 2 or 400rms?


lol i not talkin about MY SUBS....read meh post again...i talkin about a spl2000 in a wagon


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shesh
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PostPosted: Sat Apr 23, 2005 5:12 pm 
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lol hmm, i know jbl amps play the speakers inwards. 4 real.


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adam_ant_tt
 Post subject:
PostPosted: Sat Apr 23, 2005 5:23 pm 
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Quote:
Sat Feb 12, 2005

Quote:
Sat Apr 23

Wayz....


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323fsport
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PostPosted: Sun Apr 24, 2005 8:02 am 
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adam_ant_tt wrote:
Quote:
Sat Feb 12, 2005

Quote:
Sat Apr 23

Wayz....


The man wake the dead they!!!! :)


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belalegosi
 Post subject:
PostPosted: Sun Apr 24, 2005 11:22 am 
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shesh wrote:
lol hmm, i know jbl amps play the speakers inwards. 4 real.


which jbl amp does that :?: :?


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adam_ant_tt
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PostPosted: Sun Apr 24, 2005 2:10 pm 
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that hadda be a weird amp... cuz it not usin d speakr potential


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JBL
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PostPosted: Mon Apr 25, 2005 8:09 am 
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meh padna has a JBL BP1200 an it blew...he repaired it and after that the sub started playing inwards...maybe it was the cheap substitute mosfets he put in...so it's not the jbl amps...


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adam_ant_tt
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PostPosted: Mon Apr 25, 2005 7:36 pm 
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hoss that eh repair.. say wah


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shesh
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PostPosted: Tue Apr 26, 2005 8:49 pm 
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as ne jbl dealer, or ne one who knows about their stuff :)


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belalegosi
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PostPosted: Tue Apr 26, 2005 10:41 pm 
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i know plenty people using jbl amps (includin my self)
it does move both ways!
i'll sit down and watch it tom :roll:


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shesh
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PostPosted: Wed Apr 27, 2005 8:07 pm 
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lol yup, but it pulls the speaker inwards first. SERIOUSLY


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greenman
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PostPosted: Wed Apr 27, 2005 11:25 pm 
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just like dem kicker square subs...


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Peripheral
 Post subject: Re:
PostPosted: Tue Apr 17, 2012 2:32 pm 
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Really old thread, but makes sense to comment here instead of creating a new post.

SR wrote:
bad box design


What exactly is meant by this?
Does it meant the box is too large for the speaker or too small?

I'm enquiring about this particular instance because I recently built 2 boxes for 2 unknown 12" speakers (no markings at all), and they are pulling inward in the box, but play fine when outside of it.

The boxes look oversize for the speakers, but never knew any such effect was possible, so any professional information will be greatly appreciated. thanks


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Peripheral
 Post subject: Re: Sub pullin inwards
PostPosted: Tue Apr 17, 2012 3:05 pm 
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Forgot to mention, the boxes are: Vented, 2.0 cu ft, 34 Hz


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Brian Steele
 Post subject: Re: Re:
PostPosted: Tue Apr 17, 2012 11:32 pm 
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Peripheral wrote:
The boxes look oversize for the speakers, but never knew any such effect was possible, so any professional information will be greatly appreciated. thanks


One possible cause that comes to mind is non-linear vent effects caused by how each end of the vent is loaded (e.g. flared, close to a side panel, etc.). At higher SPL levels, the vent acts almost like a diode - air is pushed out of the box, but not sucked back in at the same rate. The end result is that the net pressure in the box decreases and the speaker's cone is sucked in. Flaring the vent at BOTH ends can help reduce this effect if this is actually the cause (easy to find out - flip the driver around, run it at the volume level, check to see if the cone is still sucked into the box).


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BlueIce
 Post subject: Re: Sub pullin inwards
PostPosted: Wed Apr 18, 2012 3:33 pm 
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punchin NOS
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god damn , 2005 revival...i dont even understand what i wrote...lmao so long i out of music


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