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bandpass help

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ruffneck_12
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bandpass help

Postby ruffneck_12 » September 18th, 2008, 5:18 pm

a kno a basic bandpass box is 2 chambers wit one sealed an one ported but can I make 2 chambers ported an tune the rear chamber to 27Hz and tha front to 48Hz?.........will they cancel out each other?????(d reason 4 d 27Hz is da is d lowest frequency a could hear an yea mih ears flik up)

http://www.the12volt.com/caraudio/boxes6.asp

look at pics # 1, 3 , 7 an 9 dey look interesting

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hyperpiper
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Postby hyperpiper » September 18th, 2008, 5:29 pm

cancelation

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3stagevtec
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Postby 3stagevtec » September 18th, 2008, 6:31 pm

Image

how de MC yuh tuning that! :shock:


DIY Subwoofers wrote:6th Order Bandpass Systems

Image

The 6th order bandpass system is similar to the 4th order bandpass system , except in this case both the front and the rear volumes are tuned via vents. The power handling of the 6th order bandpass system ranges from excellent within its passband to poor for frequencies lower than its passband.

The transient performance of 6th order bandpass systems is usually worse than the sealed, ported and 4th order bandpass systems, making it more suitable for sound reinforcement, multimedia and other less critical applications, rather than high-end audio. Like ported systems, the driver becomes unloaded at frequencies lower than the passband.

As all of the output of the 6th order bandpass system is via the two ports, the largest port diameter possible for each volume should be used in order to minimize port noises.

As with the 4th order system, the 6th order bandpass system rarely exhibits a perfect bandpass response - there is usually some out-of-band noise present in its output. A simple notch filter can be used to reduce this noise if it is audible. Alternatively, a low-pass filter may be used, but the in-band performance may be affected.

See the link for the tuning formulas :wink:

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ruffneck_12
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Postby ruffneck_12 » September 18th, 2008, 9:59 pm

pioneer, a wa do a home theater system wen a get som $$$ and a wa some bass da could make ppl take a shizznit wen it reach some magic frequency :lol:

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MonsterPower
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Postby MonsterPower » September 18th, 2008, 10:44 pm

ruffneck_12 wrote:pioneer, a wa do a home theater system wen a get som $$$ and a wa some bass da could make ppl take a shizznit wen it reach some magic frequency :lol:


hear wah take sum ah da money an do ah engleesh curse o sumtin .. ah cyah read wah yuh type dey nah :roll: :roll:

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ruffneck_12
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Postby ruffneck_12 » September 19th, 2008, 1:23 pm

MonsterPower wrote:
ruffneck_12 wrote:pioneer, a wa do a home theater system wen a get som $$$ and a wa some bass da could make ppl take a shizznit wen it reach some magic frequency :lol:


hear wah take sum ah da money an do ah engleesh curse o sumtin .. ah cyah read wah yuh type dey nah :roll: :roll:


look who talkin

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nello-sello
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Postby nello-sello » September 19th, 2008, 3:06 pm

ruffneck_12 wrote:pioneer, a wa do a home theater system wen a get som $$$ and a wa some bass da could make ppl take a shizznit wen it reach some magic frequency :lol:


oh lawd oh :lol: ....you want people to shizznit in your house dred





































:shock:

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ruffneck_12
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Postby ruffneck_12 » September 19th, 2008, 3:11 pm

tiles easy 2 clean......oh wait a 4get d grout.......dam

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nello-sello
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Postby nello-sello » September 19th, 2008, 3:19 pm

*** slowly backs out of this "2hit talk" thread*** :?

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