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Old 1st April 2006, 13:59   #46
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Sam, I can't find the 1202 and 1204 sub parameters. Could you also tell me how much they cost?

By the way, I got the number of the person who sells peerless india drivers in Mumbai. But the problem is, as Navin said, getting it to Bangalore. And I also have to check them before buying them. I cannot do that.
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Old 1st April 2006, 15:44   #47
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Quote:
Originally Posted by Vivekphadnis
Sam, I can't find the 1202 and 1204 sub parameters. Could you also tell me how much they cost?

By the way, I got the number of the person who sells peerless india drivers in Mumbai. But the problem is, as Navin said, getting it to Bangalore. And I also have to check them before buying them. I cannot do that.
here you go


1202 is a dual voice coil sub, there is no sub-driver called 1204.
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Old 1st April 2006, 22:47   #48
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Thanks Sam.

Qts=0.44. Cms=242. Bl=7.71. Xmax=12.5mm. What say?

Last edited by Vivekphadnis : 1st April 2006 at 22:48.
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Old 2nd April 2006, 01:23   #49
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Fs 24
Vas 100
geez this thing can go low if put in a large box.

I would recommend the aperiodic box about 2cu. ft for this.

at 2 cu. ft. Qts will jump to 1+ so using a aperiodic vent you can bring the Qts down to a more manageable 0.8 or so.

BTW this is back of the head calculations. use Box Model or Box Plot or Perfect Box for a more accurate box.
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Old 2nd April 2006, 14:31   #50
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Sam, I have another big favour to ask you. Could you let me have the TS parameters for GT4-10 and GT4-12 too. I want to have a look at their figures too.

Do you guys think something like two 10 inchers would beat the daylights out of my neighbours? Or should I stick to just one driver?
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Old 3rd April 2006, 10:46   #51
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advantages of using 2 10 v/s 1 15" (similar to advantages of using 2 8" over 1 12")

15": lower Fs, higher Xmax and so usually a 15" moves more air than 2 10", huge Vas - in most cases 2 10" will need a smaller box than 1 15.

10": Smaller Mms and higher BL/Mms ratio which means that the bass can be made quite tight. With a 15" you would get some bloom. Then again I have used 18" with little bloom.

unless we know the specs of saythe GT4-10 vs the GT4-15 we cant accurately make a decision on this.
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Old 3rd April 2006, 13:09   #52
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Navin, do you remember Arasu from diyaudio.com. I had totally forgotten that he makes drivers apparently of fairly good quality. Do you have any info on that?
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Old 3rd April 2006, 13:54   #53
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Quote:
Originally Posted by navin
With a 15" you would get some bloom. Then again I have used 18" with little bloom.
I am sure you mean 'boom'. Unless the subs in question are actually flowering.
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Old 3rd April 2006, 13:54   #54
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I do. Is he not the guy from Calcutta?
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Old 3rd April 2006, 23:28   #55
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No. Arasu is the Bangalore guy. He has one 12 inch sub. Vas=156L. P=100W. Xmax=8mm. Qts=0.45. Rubber surround. Paper cone I think but not sure. About 2K. The Vas is really high, don't you think?

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Old 4th April 2006, 10:16   #56
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big Vas and rather high Qts means rather large selaed box.
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Old 4th April 2006, 12:16   #57
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So they are not worth trying? I am okay with a big box but not too huge.
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Old 4th April 2006, 14:04   #58
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I would look at a box between 40-80 liters. I know this is a huge range but I think 40 liters might just work in your car.
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Old 4th April 2006, 22:17   #59
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Quote:
Originally Posted by navin
I would look at a box between 40-80 liters. I know this is a huge range but I think 40 liters might just work in your car.
Navin!! He wants to use it in his home!!
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Old 4th April 2006, 23:56   #60
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Fresh problems. Arasu does not have 10 or 12 inch drivers in stock. Only 8 inch ones. They are rubber surround sandwich cone. 40W, Xmax=4mm. fs=28Hz. Qts is around 0.4 or something. Now what?
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