Best VFM Performance Subs

DerAlte · 8th March 2008, 14:50

Quote:

Originally Posted by amit_mechengg

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.

Quote:

Originally Posted by amitwiz1

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.

low_bass_makker · 8th March 2008, 16:26

Quote:

Originally Posted by amit_mechengg

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.

shuvc · 8th March 2008, 18:22

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?

low_bass_makker · 8th March 2008, 19:21

Quote:

Originally Posted by shuvc

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.

abhibh · 8th March 2008, 19:40

Quote:

Originally Posted by low_bass_makker

I think it will cooler when compared to the cabin as no light can pass through in the boot.

What about hatchbacks ?

amit_mechengg · 11th March 2008, 12:31

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.

jkdas · 11th March 2008, 14:31

Quote:

Originally Posted by low_bass_makker

I did not understand the "How long it will last "

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

Quote:

Originally Posted by rocksterraghu

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

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

amit_mechengg · 15th March 2008, 14:43

how does a GZ MK2 sound in ported box. for example what if i put it in a bass reflex box?

redrage · 3rd July 2009, 16:22

Is the GZ Mk2 still available? If not whats an alternative for it (GZ series) and at what price?

nishantgandhi · 3rd July 2009, 16:40

Quote:

Originally Posted by redrage

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.

Flying Bong · 4th July 2009, 09:41

Quote:

Originally Posted by nishantgandhi

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...

abhinav.gupta88 · 4th July 2009, 10:24

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.

DjNik · 5th July 2009, 20:13

Guys among the GZ 30T, JBL 1214 And the polk db124 SVC which would be the best choice?

Ajaybiz · 7th July 2009, 16:49

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.

DerAlte · 7th July 2009, 18:01

@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.

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

8th March 2008, 18:22	#48
shuvc Senior - BHPian Join Date: May 2005 Location: Kolkata Posts: 2,911 Thanked: 360 Times View My Garage	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?
	() Thanks

11th March 2008, 12:31	#51
amit_mechengg Senior - BHPian Join Date: Dec 2007 Location: Pune Posts: 2,488 Thanked: 2,263 Times View My Garage	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.
	() Thanks

15th March 2008, 14:43	#53
amit_mechengg Senior - BHPian Join Date: Dec 2007 Location: Pune Posts: 2,488 Thanked: 2,263 Times View My Garage	how does a GZ MK2 sound in ported box. for example what if i put it in a bass reflex box?
	() Thanks

3rd July 2009, 16:22	#54
redrage BHPian Join Date: Mar 2005 Location: Bengaluru Posts: 557 Thanked: 106 Times	Is the GZ Mk2 still available? If not whats an alternative for it (GZ series) and at what price?
	() Thanks

4th July 2009, 10:24	#57
abhinav.gupta88 Senior - BHPian Join Date: Sep 2007 Location: Delhi , India Posts: 4,090 Thanked: 341 Times View My Garage	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.
	() Thanks

5th July 2009, 20:13	#58
DjNik BHPian Join Date: Oct 2008 Location: Kolkata Posts: 340 Thanked: 3 Times	Guys among the GZ 30T, JBL 1214 And the polk db124 SVC which would be the best choice?
	() Thanks

7th July 2009, 16:49	#59
Ajaybiz BANNED Join Date: Nov 2004 Location: Bangalore Posts: 1,440 Thanked: 321 Times View My Garage	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.
	() Thanks

7th July 2009, 18:01	#60
DerAlte Senior - BHPian Join Date: Mar 2007 Location: Bangalore Posts: 8,027 Thanked: 2,920 Times	@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.
	() Thanks