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View Poll Results: Value for Money Performance Subwoofer Brand
JBL 18 38.30%
Sony 3 6.38%
Ground Zero 20 42.55%
Hertz 2 4.26%
Other (Please mention i comment) 4 8.51%
Voters: 47. You may not vote on this poll

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Old 8th March 2008, 14:50   #46
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Quote:
Originally Posted by amit_mechengg View Post
is it necessary that we pump some AC air on the amps to keep them cool. is there any protection in the amps for overheating.
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Originally Posted by amitwiz1 View Post
How do amps in the boot get cooled ? I dont think the amps heat is produced at such a high level ot malfunction it.... may be so for more powerful amps.
Normal convection cooling (by free air flow) is enough till about 35DegC ambient (temperature inside the box may reach 45DegC). Some amps, by design, use forced cooling by fans. Better to ensure that the air flow over heat sink is not obstructed.

AFAIK most IC-based amps have over-load and over-temperature protection built-in.
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Old 8th March 2008, 16:26   #47
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Originally Posted by amit_mechengg View Post
is it necessary that we pump some AC air on the amps to keep them cool. is there any protection in the amps for overheating.
They don't get heat up until they are played to there max or the state when they start clipping. Then they get heat up very fast. The AB class gets more heated when compared to Class D. Also same amp if driven at for say 2 ohms will get more heated when compared to 4 ohms due to excessive load.

Amp driving speakers get less heated when compared to amp driving the subs. Because bass note need more power to reproduce them.
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Old 8th March 2008, 18:22   #48
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Most subs and amps get installed in the boot. What could be the typical temperature in the boot of a car, parked out in the sun, during peak Delhi summer?
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Old 8th March 2008, 19:21   #49
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Most subs and amps get installed in the boot. What could be the typical temperature in the boot of a car, parked out in the sun, during peak Delhi summer?
I think it will cooler when compared to the cabin as no light can pass through in the boot.
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Old 8th March 2008, 19:40   #50
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Originally Posted by low_bass_makker View Post
I think it will cooler when compared to the cabin as no light can pass through in the boot.
What about hatchbacks ?
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Old 11th March 2008, 12:31   #51
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i keep putting on the AC and blowing out cool air through the vents below the dash near the legroom so that the amps which are under the drivers and co drivers seat get some cool air.
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Old 11th March 2008, 14:31   #52
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Quote:
Originally Posted by low_bass_makker View Post
I did not understand the "How long it will last "

I would say it will last like all the good subs in the market.

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Originally Posted by rocksterraghu View Post
Are you expecting a car audio equipment to last for 20 years or so? I'm not sure why you would compare electronic stuff to watches!
Watches are electronic-mechanical these days and woofers are mechanical in a way right?

Man, if only we had woofers like Seiko Automatics... just give signal and they boom!

Quote:
Originally Posted by amit_mechengg View Post
i keep putting on the AC and blowing out cool air through the vents below the dash near the legroom so that the amps which are under the drivers and co drivers seat get some cool air.
If they had life they would have blessed you
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Old 15th March 2008, 14:43   #53
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how does a GZ MK2 sound in ported box. for example what if i put it in a bass reflex box?
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Old 3rd July 2009, 16:22   #54
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Is the GZ Mk2 still available? If not whats an alternative for it (GZ series) and at what price?
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Old 3rd July 2009, 16:40   #55
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Originally Posted by redrage View Post
Is the GZ Mk2 still available? If not whats an alternative for it (GZ series) and at what price?
I think the replacement model is 30T with an MRP of Rs 7,490.

Alternatively, listen to Bull Audio sub in a sealed box. I have only heard good things about that sub.
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Old 4th July 2009, 09:41   #56
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Originally Posted by nishantgandhi View Post
Alternatively, listen to Bull Audio sub in a sealed box. I have only heard good things about that sub.
X2 heard it in both sealed and ported configurations and would put it on my list for VFM subs...
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Old 4th July 2009, 10:24   #57
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That is not a replacement model.
It is just a higher model than the MKII

As far as i know , the replacement of the MKII is going to come soon.
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Old 5th July 2009, 20:13   #58
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Guys among the GZ 30T, JBL 1214 And the polk db124 SVC which would be the best choice?
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Old 7th July 2009, 16:49   #59
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Guys what about MB Quart DWG-254, Soundstream XW-10, INFINITY 1062W, DUB MAG AUDIO DUB100 By Audiobahn 10", CERWIN VEGA VEGA104 10" all are 10" DVC and in the range of 45-80$+shipping which is hardly 50-60$.So all together 140$ max which comes to 7000 INR.
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Old 7th July 2009, 18:01   #60
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@ajaybiz, some of these are definitely a no-no (Dub, etc.). You could visit Sprocket in Koramangala and check out some well-known and not-so-well-known models that they always stock for better margins. Usually they have 12", but if you ask them nicely they might get you 10". Will give you and idea of the prevailing prices.
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