I got a bandpass box for two 12" subwoofers....I was wondering if anyone had any ideas on what's pretty decent in sound and doesn't hurt in the pocket as well...I used to run:
2 - 12" Infinity
Jbl 600.1 amp
I am searching for the same items, two 12" subwoofers to put in the bandpass box and a amplifier to run them...Something similar to price and quality is apreciated. Any kind of help is welcome. Thanks. I build a system before thanks to your responses, that's why I always come here...Thanks for the help.
Replies (4)
trunkisloud on 01/6/2008 00:26:36
what kind of vehicle are you going to put this in??.and what model infinity subs were you using before?
swez on 01/6/2008 05:46:36
A Generic BP box is something to avoid when at all possible. They are efficient with bass, but if one does not know the front and rear chamber dimensions, choosing the right subs are a hit or miss proposition at best. Also, it is wise to use an amp that has an infrasonic/subsonic filter to protect your subs as well.
Do you have the specs on this BP box?
1. Sealed chamber dimensions? (Internal airspace)
2. Ported chamber dimensions? (Vb of the ported chambers)
3. # of Ports, dia and length of ports?
BP enclosures are best used for high SPL bass and matched well to the woofers used. The box design is often called the "One Note Wonders" as they tend to to give very high SPL at a very narrow frequency range. This is fine for SPL competition, but as a daily driver, not so hot.
Say more,
Swez
Victor on 01/10/2008 02:08:11
Am back.....!
Wish you all a very happy new year...
Swez as usual on the spot.....
but hey,,, all of you who know enclosures there...
why would a ss filter be required for a 4th order BP enclosure...?? aint the sub suspended in a fixed amount of air in the rear sealed chamber..just like any sealed enclosure.
THINK
swez on 01/10/2008 05:23:00
Quote: "why would a ss filter be required for a 4th order BP enclosure...?? aint the sub suspended in a fixed amount of air in the rear sealed chamber..just like any sealed enclosure."
In a well designed BP box that has the proper sealed dimensions to match a given sub will be fine.
If the sealed side of the chamber is well in excess of a given sub parmeters and the ported side is also tuned too low, the sub will fail prematurely.
You already know this one well Vic. That's why generic BP designs often create sub failures. In many cases, the only warning the box is not optimised for a given sub... the sub fails prematurely. (Over-excursion or a smoked coil) In a well designed 4th Order BP box, the box is optimised for a given sub and does not need an SSF. (The sealed part of the box prevents such failures)
Swez
2 - 12" Infinity
Jbl 600.1 amp
I am searching for the same items, two 12" subwoofers to put in the bandpass box and a amplifier to run them...Something similar to price and quality is apreciated. Any kind of help is welcome. Thanks. I build a system before thanks to your responses, that's why I always come here...Thanks for the help.
Replies (4)
trunkisloud on 01/6/2008 00:26:36
what kind of vehicle are you going to put this in??.and what model infinity subs were you using before?
swez on 01/6/2008 05:46:36
A Generic BP box is something to avoid when at all possible. They are efficient with bass, but if one does not know the front and rear chamber dimensions, choosing the right subs are a hit or miss proposition at best. Also, it is wise to use an amp that has an infrasonic/subsonic filter to protect your subs as well.
Do you have the specs on this BP box?
1. Sealed chamber dimensions? (Internal airspace)
2. Ported chamber dimensions? (Vb of the ported chambers)
3. # of Ports, dia and length of ports?
BP enclosures are best used for high SPL bass and matched well to the woofers used. The box design is often called the "One Note Wonders" as they tend to to give very high SPL at a very narrow frequency range. This is fine for SPL competition, but as a daily driver, not so hot.
Say more,
Swez
Victor on 01/10/2008 02:08:11
Am back.....!
Wish you all a very happy new year...
Swez as usual on the spot.....
but hey,,, all of you who know enclosures there...
why would a ss filter be required for a 4th order BP enclosure...?? aint the sub suspended in a fixed amount of air in the rear sealed chamber..just like any sealed enclosure.
THINK
swez on 01/10/2008 05:23:00
Quote: "why would a ss filter be required for a 4th order BP enclosure...?? aint the sub suspended in a fixed amount of air in the rear sealed chamber..just like any sealed enclosure."
In a well designed BP box that has the proper sealed dimensions to match a given sub will be fine.
If the sealed side of the chamber is well in excess of a given sub parmeters and the ported side is also tuned too low, the sub will fail prematurely.
You already know this one well Vic. That's why generic BP designs often create sub failures. In many cases, the only warning the box is not optimised for a given sub... the sub fails prematurely. (Over-excursion or a smoked coil) In a well designed 4th Order BP box, the box is optimised for a given sub and does not need an SSF. (The sealed part of the box prevents such failures)
Swez
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