Help Choosing Amp

redeye · 17th October 2006, 18:48

Guys i need your help i have a sub woofer for which i'm confused to choose which amp to buy... can any one pls tell what should i look for while buying an amp..

my budget is 35k

THis is MY SUBWOOFER

GTO1204BP-D
Dual 12" Bandpass Enclosure
Specifications

Power Handling, RMS 600 Watts
Power Handling, Peak 1800 Watts
Sensitivity (2.83V @ 1m) 96dB
Frequency Response 30Hz - 150Hz
Impedance 2 Ohms

my choices right now are

The GTO601.1

Specifications

Power Output : 424 Watts RMS x 1 channel at 4 ohms and ≤ 1% THD + N
580 watts RMS x 1 channel at 2 ohms, 14.4V supply and < 1% THD + N
Signal-to-Noise Ratio: 72dBA (reference 1 watt into 4 ohms)
Dynamic Power: 580 Watt at 4 ohms
Effective Damping Factor: 6.326 at 4 ohms
Frequency Response (~3dB): 10Hz - 302Hz
Maximum Input Signal: 5.3V
Maximum Sensitivity: 210mV
Output Regulation: .21dB at 4 ohms
Dimensions (W x H X D)
Main Unit: 15-1/8" x 12-15/16" x 2-3/8"

is amp enough to power the sub woofer at it's best...

my other choice is

The GTO1201.1
Specifications

787 watts RMS x 1 channel at 4 ohms
1114 watts RMS x 1 channel at 2 ohms, 14.4V
Variable cross-over.
Variable Bass Boost.
Speaker Level Input
Frequency Response (–3dB): 10Hz - 302Hz
Overload protection
Maximum Input Signal: 6.1V
Maximum Sensitivity: 140mV
Output Regulation: .21dB at 4 ohms
Dimensions (W x H X D)
Main Unit: 18-11/16" x 12-5/16" x 2-3/8"

pls suggest what to buy any other company amp also is ok

my budget is 35k

rsjaurr · 17th October 2006, 21:03

redeye, GTO601.1 should be enough for you.
As u have asked for other brands i will also suggest u to have a look at audison,JL audio[slash series] and alpine amplifiers.

blueraven316 · 17th October 2006, 21:13

Look at Rockford Fosgate too, their amps are simply kickass.
JL will cost you a lot more but its again very good and worth it.
Any good amp can be tuned to sound like the way you want, SPL/SQL
So if you are into a balance of SQL/SPL typo, then look at Power Series RF amps also, they churn out a lot more than rated power at times even 45 to 50 % more and will blow JBL counterparts to bits but at a premium of cost and a little difficult to find in Bangalore everywhere.

Your budget for just the amp is 35 or totally ?

Even Hifonics have an Amp the Brutus 606 which is kickass too and costs a lot less than any RF amp coming very close in performance.

redeye · 17th October 2006, 23:12

35k for amp only , and how do you choose i mean by specifications

should rms of sub woofer and the amp have to be close to each other
or
the watts of the amp should be near to the peak power watts of the sub woofer

blueraven316 · 18th October 2006, 00:47

RMS to RMS, I think your subs are Dual 4 Ohms subs, so Ideally you need to run them either at 4 Ohms or 1 Ohm, of which 4 Ohms is the better option.
Even if your subs are higher on RMS it's okay, but the amp shud not be run at a higher RMS rating than subs.
It's good if you can run the setup at 4 Ohms, tht way the amp runs cooler and more efficient and still churns out a good amount of power (if it's powerful), or find an amp that is 1 Ohm Stable,

Both JBL 601 and 1201 are not 1 Ohm Stable.

Sam Kapasi · 18th October 2006, 00:52

The GTO 1204-BPD is a bandpass box with 2 terminals on it. Each one is 4 ohms.

Both in parallel make 2 ohms.

blueraven316 · 18th October 2006, 00:59

aah, so the subs are single coil in there ??

hydrashok · 18th October 2006, 01:22

Quote:

Originally Posted by redeye

35k for amp only , and how do you choose i mean by specifications

should rms of sub woofer and the amp have to be close to each other
or
the watts of the amp should be near to the peak power watts of the sub woofer

Well... from what I've heard, for best results (regardless of budget, of course) you should choose an amp with output wattage in the upper two-thirds of the sub's maximum output wattage. If you get an amp as powerful as this, you should be able to keep the output (from the amp) to the sub safe (and optimum for the sub) by keeping the gain settings on the amp at a safe level. A little experimentation with some good cds of your favourite music will be required for this. From your choice of sub (dual bandpass) I take it you are a rap & hip-hop guy, right? If I'm right, you will definitely need to keep the gains safe 'cause that kind of music will definitely keep the sub busy.

Am I wrong, gurus?

Sam Kapasi · 18th October 2006, 01:32

let me answer your question specifically since it is specific.

I have heard the 1204BPD. It needs atleast 601.1 to drive it. It bangs with the 601.1 but It sounds much better, louder deeper with a 1201.1 driving it.

Hope this helps

Dhoom Responsibly.

speedzak · 18th October 2006, 06:10

Congratulations!
That Bandpass you've got for yourself is a great beast and possibly you're the first owner in India.

Let me suggest you to get JBL 1201.1 amp for this. Another option is Alpine 1001 which will be hard to find. (I hear that Alpine has some pieces left with them, PM me for details) Anything less, you're unfair to those subs.

Get a good installer to get the job done.

Sam Kapasi · 18th October 2006, 09:20

Quote:

Originally Posted by speedzak

Congratulations!
That Bandpass you've got for yourself is a great beast and possibly you're the first owner in India.
.

Big Bassy Beast it is.. For sure. Here's the picture. It's got blue lights and all too lol

I don't know if he is the first owner though. I think the first purchased unit would be in New Delhi somewhere.

speedzak · 18th October 2006, 10:07

Quote:

Originally Posted by Sam Kapasi

I don't know if he is the first owner though. I think the first purchased unit would be in New Delhi somewhere.

Gunbir should've thrown more light on this. But seems he is lost these days.
Sam, what's the best way to drag 2 ICEy Sardars back to this section?

The pic explains all. That's a big bassy beast for sure.
@Redeye. Which car have you chosen to plant this beast into?

blueraven316 · 18th October 2006, 11:50

Quote:

Originally Posted by speedzak

Another option is Alpine 1001 which will be hard to find. (I hear that Alpine has some pieces left with them, PM me for details) Anything less, you're unfair to those subs.

I am unable to understand this, the subs have a combined power of 600 RMS and what Sam said is have two input terminals 4 Ohms each, so in Parallel it's 2 Ohms and series (for which the enclosure has to be opened) it's 8 Ohms,
now the MRD1001 is a 1000 RMS @ 2 Ohms amp , which will smoke the subs in time even if the gain is kept low, the amp does not need the gain to be high either to throw out 1000 RMS, and I have seen many installs with that amp and INDEED its a beast, so how does a 600 RMS pair of subs match a 1000 or a 1200 RMS amp ??

anToNIcHeN · 18th October 2006, 18:58

Quote:

Originally Posted by blueraven316

I am unable to understand this, the subs have a combined power of 600 RMS and what Sam said is have two input terminals 4 Ohms each, so in Parallel it's 2 Ohms and series (for which the enclosure has to be opened) it's 8 Ohms,
now the MRD1001 is a 1000 RMS @ 2 Ohms amp , which will smoke the subs in time even if the gain is kept low, the amp does not need the gain to be high either to throw out 1000 RMS, and I have seen many installs with that amp and INDEED its a beast, so how does a 600 RMS pair of subs match a 1000 or a 1200 RMS amp ??

blueraven... its the otherway around!!...
if you underpower, you have higher chances of smoking ur sub....
by underpowering means.... you have 600RMS sub and ur amp is only say....400RMS or so.... this means that... you can drive amp into clipping!!... by clipping , you are actually suppling more power to sub...(you need to google and see the graph for power supplied when an amp is clipped to understand better)... This way, its possible that you can fry the voice coil of the sub...(in prolonged clipping)... also its very hard to make out when the amp is clipping..
whereas, in the other case, if you carefully adjust the gains.... you are safe..... like hydrashok has said.. only upper 2/3rd.... that if you have 600 RMS sub, you can safely attach 1000 RMS amp to it..

regards,
ant.

rsjaurr · 18th October 2006, 19:23

Quote:

Originally Posted by Sam Kapasi

Big Bassy Beast it is.. For sure. Here's the picture. It's got blue lights and all too lol

.

oh.....i take my words back as i thought u have bought single sub but this beast has two subs in it,so u would need 1201.1 amp and not 600.1.

BTW is 600wrms is combined power of spk or its individual's?

17th October 2006, 18:48	#1
redeye BHPian Join Date: Jul 2006 Location: bangalore Posts: 275 Thanked: 4 Times View My Garage	Guys i need your help i have a sub woofer for which i'm confused to choose which amp to buy... can any one pls tell what should i look for while buying an amp.. my budget is 35k THis is MY SUBWOOFER GTO1204BP-D Dual 12" Bandpass Enclosure Specifications Power Handling, RMS 600 Watts Power Handling, Peak 1800 Watts Sensitivity (2.83V @ 1m) 96dB Frequency Response 30Hz - 150Hz Impedance 2 Ohms my choices right now are The GTO601.1 Specifications Power Output : 424 Watts RMS x 1 channel at 4 ohms and ≤ 1% THD + N 580 watts RMS x 1 channel at 2 ohms, 14.4V supply and < 1% THD + N Signal-to-Noise Ratio: 72dBA (reference 1 watt into 4 ohms) Dynamic Power: 580 Watt at 4 ohms Effective Damping Factor: 6.326 at 4 ohms Frequency Response (~3dB): 10Hz - 302Hz Maximum Input Signal: 5.3V Maximum Sensitivity: 210mV Output Regulation: .21dB at 4 ohms Dimensions (W x H X D) Main Unit: 15-1/8" x 12-15/16" x 2-3/8" is amp enough to power the sub woofer at it's best... my other choice is The GTO1201.1 Specifications 787 watts RMS x 1 channel at 4 ohms 1114 watts RMS x 1 channel at 2 ohms, 14.4V Variable cross-over. Variable Bass Boost. Speaker Level Input Frequency Response (–3dB): 10Hz - 302Hz Overload protection Maximum Input Signal: 6.1V Maximum Sensitivity: 140mV Output Regulation: .21dB at 4 ohms Dimensions (W x H X D) Main Unit: 18-11/16" x 12-5/16" x 2-3/8" pls suggest what to buy any other company amp also is ok my budget is 35k
	() Thanks

17th October 2006, 21:03	#2
rsjaurr BHPian Join Date: Sep 2005 Location: Batala Posts: 777 Thanked: 28 Times	redeye, GTO601.1 should be enough for you. As u have asked for other brands i will also suggest u to have a look at audison,JL audio[slash series] and alpine amplifiers.
	() Thanks

17th October 2006, 21:13	#3
blueraven316 Senior - BHPian Join Date: May 2006 Location: Bangalore Posts: 1,109 Thanked: 21 Times View My Garage	Look at Rockford Fosgate too, their amps are simply kickass. JL will cost you a lot more but its again very good and worth it. Any good amp can be tuned to sound like the way you want, SPL/SQL So if you are into a balance of SQL/SPL typo, then look at Power Series RF amps also, they churn out a lot more than rated power at times even 45 to 50 % more and will blow JBL counterparts to bits but at a premium of cost and a little difficult to find in Bangalore everywhere. Your budget for just the amp is 35 or totally ? Even Hifonics have an Amp the Brutus 606 which is kickass too and costs a lot less than any RF amp coming very close in performance. Last edited by blueraven316 : 17th October 2006 at 21:14.
	() Thanks

17th October 2006, 23:12	#4
redeye BHPian Join Date: Jul 2006 Location: bangalore Posts: 275 Thanked: 4 Times View My Garage	35k for amp only , and how do you choose i mean by specifications should rms of sub woofer and the amp have to be close to each other or the watts of the amp should be near to the peak power watts of the sub woofer
	() Thanks

18th October 2006, 00:47	#5
blueraven316 Senior - BHPian Join Date: May 2006 Location: Bangalore Posts: 1,109 Thanked: 21 Times View My Garage	RMS to RMS, I think your subs are Dual 4 Ohms subs, so Ideally you need to run them either at 4 Ohms or 1 Ohm, of which 4 Ohms is the better option. Even if your subs are higher on RMS it's okay, but the amp shud not be run at a higher RMS rating than subs. It's good if you can run the setup at 4 Ohms, tht way the amp runs cooler and more efficient and still churns out a good amount of power (if it's powerful), or find an amp that is 1 Ohm Stable, Both JBL 601 and 1201 are not 1 Ohm Stable.
	() Thanks

18th October 2006, 00:52	#6
Sam Kapasi Distinguished - BHPian Join Date: Jul 2005 Location: Mumbai (but wat Posts: 6,935 Thanked: 2,480 Times View My Garage	The GTO 1204-BPD is a bandpass box with 2 terminals on it. Each one is 4 ohms. Both in parallel make 2 ohms.
	() Thanks

18th October 2006, 00:59	#7
blueraven316 Senior - BHPian Join Date: May 2006 Location: Bangalore Posts: 1,109 Thanked: 21 Times View My Garage	aah, so the subs are single coil in there ??
	() Thanks

18th October 2006, 01:32	#9
Sam Kapasi Distinguished - BHPian Join Date: Jul 2005 Location: Mumbai (but wat Posts: 6,935 Thanked: 2,480 Times View My Garage	let me answer your question specifically since it is specific. I have heard the 1204BPD. It needs atleast 601.1 to drive it. It bangs with the 601.1 but It sounds much better, louder deeper with a 1201.1 driving it. Hope this helps Dhoom Responsibly.
	() Thanks

18th October 2006, 06:10	#10
speedzak BANNED Join Date: Mar 2006 Location: India Posts: 4,346 Thanked: 29 Times	Congratulations! That Bandpass you've got for yourself is a great beast and possibly you're the first owner in India. Let me suggest you to get JBL 1201.1 amp for this. Another option is Alpine 1001 which will be hard to find. (I hear that Alpine has some pieces left with them, PM me for details) Anything less, you're unfair to those subs. Get a good installer to get the job done.
	() Thanks