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Old 5th April 2008, 11:53   #1
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Default Does the JBL GTO1004 compete the 75.4?

Guys,
Now that we have the 75.4 out of the market. What does the GTO1004 has to offer? How much does the amp cost? Quality and performance apart I do like the way the 75.4 looked though .

JBL Car & Marine Audio

Any comments??

Last edited by harmon_bro : 5th April 2008 at 11:54.
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Old 5th April 2008, 12:21   #2
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Ya even i would like to know more about this amp. We still have members who're buying the 75.4 but very few (or none) reports about this amp.

I know the official price is 14,990/- as posted by Sam at the launch.
Is it also available in grey ? for what price ??

Last edited by adityamunshi : 5th April 2008 at 12:22.
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Old 5th April 2008, 12:36   #3
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The 1004 apparently surpasses the 75.4's performance.
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Old 5th April 2008, 13:26   #4
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many JBL dealers say the new amp has better cooling system than the 75.4. they have sorted out heating and clipping issues in 75.4. yet dont know the fact, might be SAM can enlighten us.
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Old 5th April 2008, 19:01   #5
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Quote:
Originally Posted by nitrous View Post
The 1004 apparently surpasses the 75.4's performance.
75.4 is 104 watts RMS x 4 channel at 4 ohms and 1004 is 100W RMS x 4 Channels at 4 Ohms

75.4 is 284 watts RMS x 2 channel at 4 ohms and 1004 is 225 watts RMS x 2 channel at 4 ohms

Last edited by abhibh : 5th April 2008 at 19:04.
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Old 5th April 2008, 19:45   #6
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The GTO 75.4 was a great amplifier with respect to the power it put out at its price!

The GTO1004 has a slightly better Signal to noise ratio: 85dbA (reference 1W into 4 ohms) compared to 80dbA (reference 1W into 4 ohms) of the 75.4, hence sound quality would be better, but at the cost of power. It would be a good bet to run 4 speakers off it. It wouldn't do justice to a subwoofer as the 75.4 did!

The GTO 75.4 would be a better bet for running a DVC sub in bridged mode. (it is by far one of the best amps to run a sub with that kind power at that price!)

Last edited by shrivz : 5th April 2008 at 19:46.
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Old 5th April 2008, 21:22   #7
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Quote:
Originally Posted by shrivz View Post
The GTO 75.4 was a great amplifier with respect to the power it put out at its price!

The GTO1004 has a slightly better Signal to noise ratio: 85dbA (reference 1W into 4 ohms) compared to 80dbA (reference 1W into 4 ohms) of the 75.4, hence sound quality would be better, but at the cost of power. It would be a good bet to run 4 speakers off it. It wouldn't do justice to a subwoofer as the 75.4 did!

The GTO 75.4 would be a better bet for running a DVC sub in bridged mode. (it is by far one of the best amps to run a sub with that kind power at that price!)
Hi,

The difference in power is really negligible but from what i know, the 1004 is much better sq wise. The 75.4 no doubt is a great amplifier. But, it was a little harsh. For sub duty though, nothing can beat this amp. It has loads of power. I think the 1004 wont be far off. There wont be a great difference in sub output. 225 watts are not at all bad.

I think, the 1004 will be equally good if not better and Imo, it looks good too. But at 15k for the 1004, the 75.4 makes more sense to me.

cheers
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Old 5th April 2008, 22:27   #8
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Any ideas about the price in grey ?
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Old 5th April 2008, 22:33   #9
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Quote:
Originally Posted by clipto333
There wont be a great difference in sub output. 225 watts are not at all bad.
It wont be bad, but IMO 225W versus 284W would mean a lot of difference while running a sub. Headroom is at a bare minimum (if any) with the 1004.

Quote:
Originally Posted by clipto333
I think, the 1004 will be equally good if not better and Imo, it looks good too. But at 15k for the 1004, the 75.4 makes more sense to me.
Absolutely!!

EDIT: Just noticed, the 1004 is stable at 2ohms!

Any details on the DBO circuit and adjustable 'Q' feature with the mono amps? How do you adjust the Q? is there a frequency selection knob?

Last edited by shrivz : 5th April 2008 at 22:43.
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Old 6th April 2008, 00:32   #10
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Quote:
Originally Posted by shrivz View Post
Any details on the DBO circuit and adjustable 'Q' feature with the mono amps? How do you adjust the Q? is there a frequency selection knob?
The Q of a EQ is the width over which the EQ has an effect. Usually EQ will boost frequencies as wide as an octave lower and higer than the center frequency; by adjusting the Q one can decide exactly how much higher and below the center frequency the EQ should operate.
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Old 7th April 2008, 12:12   #11
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Quote:
Originally Posted by abhibh View Post
75.4 is 104 watts RMS x 4 channel at 4 ohms and 1004 is 100W RMS x 4 Channels at 4 Ohms

75.4 is 284 watts RMS x 2 channel at 4 ohms and 1004 is 225 watts RMS x 2 channel at 4 ohms
I would stand corrected if you can give me the source of your info.

The JBL site says 75.4 is 104@4ohms / 142 RMS@2 ohms & 284 RMS @4 ohms(2-ch
And 1004 is 100@4 ohms/ 150 RMS@ 2 ohms and it doesn't give the value for 2-ch bridged
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Old 7th April 2008, 12:20   #12
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^^^

I also think the 1004 is 100 x 4 at 4 ohms, and 280 W @ 4ohms in bridged mode.
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Old 7th April 2008, 14:47   #13
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Quote:
Originally Posted by nitrous View Post
I would stand corrected if you can give me the source of your info.

The JBL site says 75.4 is 104@4ohms / 142 RMS@2 ohms & 284 RMS @4 ohms(2-ch
And 1004 is 100@4 ohms/ 150 RMS@ 2 ohms and it doesn't give the value for 2-ch bridged
75.4
http://caraudiosecurity.com/shop/pro...s_id/2911.html

1004
http://caraudiosecurity.com/shop/pro...s_id/8038.html

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Old 8th April 2008, 12:45   #14
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Generally, almost always, the 2-ch bridged output at 4ohms is exactly twice the value of a single channel output at 2 ohms.
Lets take the 75.4 for example. Its single channel output at 2 ohms is 142W RMS.
Its bridged channel output @ 4ohms is 284W RMS.

Abhibh, I do not doubt your judgement.But, I don't take caraudiosecurity.com as the gospel truth.
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Old 8th April 2008, 12:57   #15
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Quote:
Originally Posted by nitrous View Post
Generally, almost always, the 2-ch bridged output at 4ohms is exactly twice the value of a single channel output at 2 ohms.
Excellent observation nitrous. That is very true.

I also dont think the caraudiosecurity specs are correct.

I cant find the link but when I first heard about the 1004, I had searched and found the specs to be ~ 280 W bridged.
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