[low_bass_makker]

Which box should be made for this woofer
1) Sealed
2) Ported

Please tell the voulme and port lenght and any recomendation about the box also. TS parameters are given below

[navin]

Fs=32Hz, Qts 0.56, Vas 28 liters. is this a Bolton? I'd try a selaed box.

[low_bass_makker]

No it is not a bolton but which box will be best suited for this sub any why?

[somebodystopme]

Originally Posted by navin

Fs=32Hz, Qts 0.56, Vas 28 liters. is this a Bolton? I'd try a selaed box.

God Seems like you ppl speak some alien language. Lol. Well it is good to know that you ppl have knowledge, audio shop ppl dont even know what sealed and ported means.
Awesome You guys are good. By the way what you recommend for
<<<<<this woofer(the one on my avtar) this is the one i have.

[gunbir]

Originally Posted by navin

Fs=32Hz, Qts 0.56, Vas 28 liters. is this a Bolton? I'd try a selaed box.

Hmmm... actually that sounds like a Pioneer 124D...

[low_bass_makker]

What ever it sound Plz recommend the box size !!! Seal or ported ?

[Vivekphadnis]

Navin, what made you think it is a bolton? A Qts of 0.56 perhaps?

[navin]

Originally Posted by low_bass_makker

Which box should be made for this woofer
1) Sealed
2) Ported

Listen I dont know what you are trying to proove but given the MMs of 207gms (that would mean a cone that weighs a bit more than 200gms) and a Qms of 38! this woofer would require huge power. 200W+

given the huge Mms and Qms and the high (but not so huge) Qts (in fact Qms is so high that Qts=Qes!) I dont see how to make a practical boss reflex box with this woofer. However I am willing to admit I could be wrong (If I had 1 ruppee for everytime I was wrong I'd be a millionaire).

In a 40-50 liter sealed box expect an F3 of about 42Hz.

however you can build a BOOM-BOX bass reflex woofer with this too (BB4 alignment). in a 40 liter box with a very long port. I would not be an acceptable sound.

However what you can try is build a 40 liter box. see how it sounds. then install a port (easy way is to build an extra side wall with a port attached and switch side walls). I would look at a port that is about 3-4" dia and 12-16" long. Then means that the box must have atleast one dimension that is 3-4" more than the length of the port.

However I feel the only practical solution is a sealed box.

I'd ask the Guru (Sam, JB, B&T, Gunbir etc...) what their opinion is though.

[low_bass_makker]

Navin sir the manual of this woofer says .8 cuft volume for the sealed and the ported also. what to do man u said 40 liters that is double than the manual says.

[Vivekphadnis]

What the manual says is not rigid. You need to experiment with box sizes, different alignments and port tuning. The wise thing to do is to build a bix box (only limited by the room in your car) and you can always reduce internal volume by filling it up. This way you can experiment tilll you find the sound you want. If you build too small a box, you obviously cannot enlarge it later.

Do your homework well before you cut any wood and you will end up with a good result. We are all there to help you.

[navin]

Originally Posted by low_bass_makker

Navin sir the manual of this woofer says .8 cuft volume for the sealed and the ported also. what to do man u said 40 liters that is double than the manual says.

a 0.8 cu. ft. box will give you a mid bass hump and no low bass. many like this sound. the smaller box also work with conventioanl wisdom that Vb < Vas. I have noever been one to follow conventional wisdom. :-)

I would really like to request all of you ICEers to listen to your ears. I dont subscribe to any magazines or such and if I do read them on occasion I have no reason to believe what they say. I have often found that I dont particularly care for audio components recommended by many respectible magazines and even reviewers.

Magazines and reviewers not only have different tastes and rooms but are also led by contraints some moral some technical and some political. You and I are not. We are spening our hard earned money to reporouce music we like to produce what we consider a pleasureable experience. It is that SIMPLE.