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-   -   Building my first 4th order BP box, any suggestions? (http://www.diyaudio.com/forums/subwoofers/57684-building-my-first-4th-order-bp-box-any-suggestions.html)

theCat 21st May 2005 09:00 PM

Building my first 4th order BP box, any suggestions?
 
2 Attachment(s)
I am building my first BP box to use in my HT setup. I am using a 12 inch car audio driver (audiopipe tsv12), I ran it on Winsid and the curve is the following. Do you think it will sound nice on a home setup? I plan on crossing it at 70 hz, but I am afraid of "one tone bass". Any suggestions?

Thanks in advance!

simon5 21st May 2005 09:28 PM

With a bandpass like this, you'll only get output from about 40 Hz to 60 Hz... I think you can do better, unless you're looking at high SPL only.

Bill Fitzpatrick 22nd May 2005 07:10 AM

Re: Building my first 4th order BP box, any suggestions?
 
Quote:

Originally posted by theCat
Any suggestions?
Yes. Don't build a bandpass box.

theCat 22nd May 2005 04:23 PM

Haha hard answer!

Thing is, WinISD suggests either a sealed or 4th order BP due to high EBP, so that´s why I am going for that design........

:xeye:

Cal Weldon 22nd May 2005 11:50 PM

I'm with grumpy Bill. I've never heard a bandpass sound good anywhere but in a car.
Not natural sounding

Cal

RJ 23rd May 2005 12:06 AM

The sound quality of a 4th order bandpass isn't that great.
For kick a** bass I recommend a dual-chambered bass reflex;
http://www.diysubwoofers.org/prt/dual_chamber.htm

theCat 23rd May 2005 06:26 AM

These are the specs of the speaker:

QTS 0,56
QMS 3,85
VAS 54,4 L
QES 0,62
FS 33hz
SPL 88 db
RE 2x4 ohm
PE 300 w
Le 1,85
Xmax 8,0

Does anyone think it can work on a ported box?

simon5 23rd May 2005 06:59 AM

Yes, it can always work in a ported box, I never look at the EBP number.

You could tune it around 20-25 Hz I guess.

RJ 23rd May 2005 04:01 PM

I get 24 hz. F3 & Fb
Box size 13wx24hx22d
Port 3" x 19 1/4"
At 24" high the board that seperates the two chambers would be 8"
So the small chamber would be 8" the large chamber would be 16".
Power rating before Xmax & Port Chuffing is 150 watts.
Both at 25 hz.
Total box volume is 87 litres.

Yes, It's Do-Able!!!


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