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Old 25th February 2008, 12:02   #31
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Originally Posted by praveen_v View Post
Hey in some other thread someone reported that the JBL 75.4 amp overpowers the front JBL 607components. So does that mean I will have to look at more powerful components or maybe components with 4Ohm load so that amp delivers less power to it??
Back to the Books

GTO 75.4 when connected to GTo 607c it would push out 142W RMS at 2 ohms Surprisingly amazing performance from the Big Papa Punk GTO 75.4

That makes it twice the maximum input 607 can take.

So at normal Volume Levels they are fine but as as Volume gets higher so does the power which would Lead to a burnt smell and smoke coming from your Speakers Meaning time for Replacement of speakers

Also important Note dont even try to start the audio playing at high volumes they will cook the Speakers in 5 seconds time.

Start up audio at low volume and rise up slow.
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Old 25th February 2008, 12:04   #32
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Originally Posted by praveen_v View Post
Hey in some other thread someone reported that the JBL 75.4 amp overpowers the front JBL 607components. So does that mean I will have to look at more powerful components or maybe components with 4Ohm load so that amp delivers less power to it??
4 ohms speaker is a comparitively better option i would say yet they are still high power for the 607c's.
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Old 25th February 2008, 13:53   #33
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4 ohms speaker is a comparitively better option i would say yet they are still high power for the 607c's.
I see the JBL components 607c are 2 ohm speakers while the Infinity and hertz components are 4 ohms and have better power handling.
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Old 25th February 2008, 13:57   #34
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LBM suggested setting the HPF to 100hz or more to save the 2 ohm speakers from blowing.
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Old 25th February 2008, 14:33   #35
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LBM suggested setting the HPF to 100hz or more to save the 2 ohm speakers from blowing.
I dont think this is what LBM meant.

the sole reason to XO a speaker higher is to prevent it from being over loaded with low frequencies. The impedance of the speaker has little to do with it's ability to handle low frequncies.
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Old 25th February 2008, 15:02   #36
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Is it good idea to put one more pair of GTO 607C at rear doors(Swift is having place for that) connected to front 2 channels of AMP and rear will power the GTO937 at MDF plank for optimium use of 75.4 AMP?
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Old 25th February 2008, 15:12   #37
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Ajay, U will induce a 1 ohm load on the amp and the amp isn't 1 ohm stable.
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Old 25th February 2008, 15:28   #38
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Quote:
Originally Posted by Ajaybiz View Post
Is it good idea to put one more pair of GTO 607C at rear doors(Swift is having place for that) connected to front 2 channels of AMP and rear will power the GTO937 at MDF plank for optimium use of 75.4 AMP?
Instead of smoking one pair of 607C's you are giving idea's to smoke 2 pairs

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Ajay, U will induce a 1 ohm load on the amp and the amp isn't 1 ohm stable.
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Old 25th February 2008, 16:03   #39
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If i power them in series then?
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Old 25th February 2008, 16:03   #40
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Pravin Have you Bought your stuff yet ?

Can i suggest something for you ?

4 channel GT-604 amp,GTO-607c front & GTO937 Rear

Do this After that you can start on your Craving for Bass.

By the time your are ready for Stage 2 ICE we would have more options open in the Market too.

This is only my suggestion

Let me know what you think.

Also the Later you buy the Cheaper things Get
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Old 25th February 2008, 16:05   #41
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Originally Posted by Ajaybiz View Post
If i power them in series then?
Do you know how to Calculate the Series and Parallel connections?

I have lot of doubts with them.

Any suggestions on a Bhpian whose Real Good at Sound Engineering calculations?

I wanted to grab more of Series and || connections.
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Old 25th February 2008, 16:07   #42
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GTO 937 is a Good Match for the Big Punk 75.4
I used to Run a pair of GTO 936e from 2 Channels of a 75.4

The sound used to hurt my Ear.
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Old 25th February 2008, 17:22   #43
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Originally Posted by Ajaybiz View Post
If i power them in series then?
If you have to connect it in series, the + from amp to + of one speaker, the -ve of which will be connected to the + of the second speaker and the -ve of second speaker goes to the -ve of amp which i am doubtful will work.

But it's my view and i'm no expert. ICE gurus what do you say??
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Old 26th February 2008, 10:09   #44
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Quote:
Originally Posted by Ajaybiz View Post
Is it good idea to put one more pair of GTO 607C at rear doors(Swift is having place for that) connected to front 2 channels of AMP and rear will power the GTO937 at MDF plank for optimium use of 75.4 AMP?
Quote:
Originally Posted by Ajaybiz View Post
If i power them in series then?
Quote:
Originally Posted by praveen_v View Post
If you have to connect it in series, the + from amp to + of one speaker, the -ve of which will be connected to the + of the second speaker and the -ve of second speaker goes to the -ve of amp which i am doubtful will work.

But it's my view and i'm no expert. ICE gurus what do you say??
1. the best way to ensure that the amp does not blow speakers is to turn the gain on the amp down and HPFs on.

2. Now assuming that you want to use a 75.4 to wire up 2 x 607s and 1 x 937 this is what you could do. Wire the 607s in series (+ to -) and to the front channel of the amp, leaving the rear channel of the amp to power the 937.

Mind you if you do this the image will alwys feel like it is coming from the rear (for the driver and front passenger) becuase more than half the power from the amp is being used to drive speakers behind the driver and front passenger.

3. If it were me this is what I would do.
use the amp to drive the 4 607s after the amp's gains and HPF have been tuned
use the HU to drive the 6x9s
this might not be optimum use of the amp or give the best bass but it will provide the optimum imaging.

Last edited by navin : 26th February 2008 at 10:12.
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Old 26th February 2008, 10:28   #45
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Hey the fiesta petrol has a 45k discount now! So u officially have 70K for your ice!! Guys!! Start planning!!! woohoo!!
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