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Discussion Starter · #1 · (Edited)
Can anyone help me pick from these 4 amps. If you could put them in order from 1 to 4 that would help a lot:

First: Kicker ZX650.4 170 x 4 (4ohm)
http://www.kicker.com/06/tech-support/manuals/manuals/2006/2006 ZX350 650 850-4 b01 WEB.pdf

Second: JBL GTO75.4 II 104 x 4 (4ohm)
JBL Car & Marine Audio

Third: JBL PX300.4 123 x 4 (4ohm)
JBL Car & Marine Audio

Fourth: MB Quart PAB4100 100 x 4 (4ohm)
MB QUART - a Brand of MAXXSONICS - <b>PAB 4100</b> 4-Channel <nobr><img src="/grafen/neu.gif" border="0">- ENGLISH

I will be picking one of these to power the front and rear speakers (Alpine Type-r's) I think the kicker is probably the best one of all but it is also
the most expensive. (probably because its overkill for the speakers at 170 watts but they dont have anything between the ZX650.4 and the
lowly ZX350.4) hopefully one of the other three can be good alternatives. Opinions? THANKS
 

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BoomGoesTheDynaMitt
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you can't beat Kicker's quality.
:ugh: Not saying they are bad but you can CERTAINLY beat their quality.

Gustavo7: What do you plan to hook up to these amps and are you planning to do one speaker per channel? One thing that stands out to me is the signal to noise ratios. The Kicker has the highest and the Quart has the lowest (70, wow). The other two are in the proper order as well (as far as sig to noise ratios go). I've never been a JBL fan :dunno: The MB Quart seems good to me but only if you are looking for quality/clarity above sound level (volume). I've never used a Quart amp though so I have no 1st hand experience... I just assume that would be the case with that freaky low signal to noise ratio. I'm guessing it does a lot to supress line noise or something :dunno:
 

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Car Audio Mod #3
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:ugh: Not saying they are bad but you can CERTAINLY beat their quality.

Gustavo7: What do you plan to hook up to these amps and are you planning to do one speaker per channel? One thing that stands out to me is the signal to noise ratios. The Kicker has the highest and the Quart has the lowest (70, wow). The other two are in the proper order as well (as far as sig to noise ratios go). I've never been a JBL fan :dunno: The MB Quart seems good to me but only if you are looking for quality/clarity above sound level (volume). I've never used a Quart amp though so I have no 1st hand experience... I just assume that would be the case with that freaky low signal to noise ratio. I'm guessing it does a lot to supress line noise or something :dunno:
:agreed:

Also look at the Eclipse XA4000. I switched to that after my KX650.4 and the clarity was amazing. Along the same lines is the Alpine PDX 4.150

I would say the MB Quart for SQ. The Kicker if you want to get loud, and leave the JBL's out of the equation (only JBL I would buy is the Crown series, and those are rediculous).
 

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Discussion Starter · #9 ·
Gustavo7: What do you plan to hook up to these amps and are you planning to do one speaker per channel? One thing that stands out to me is the signal to noise ratios. The Kicker has the highest and the Quart has the lowest (70, wow). The other two are in the proper order as well (as far as sig to noise ratios go). I've never been a JBL fan :dunno: The MB Quart seems good to me but only if you are looking for quality/clarity above sound level (volume). I've never used a Quart amp though so I have no 1st hand experience... I just assume that would be the case with that freaky low signal to noise ratio. I'm guessing it does a lot to supress line noise or something :dunno:
Sorry if i didnt explain myself well.
Channels 1 & 2: Alpine 6.5 Type R Components
Channels 3 & 4: Alpine 6 x 9 Type R's
Is there any other way to do it besides one speaker per channel?
Is the signal to noise ratio really that bad? What do you mean by suppressing line noise? (possible dumb question) How much difference in volum do you think there would be between the MB and the Kicker?
 

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Discussion Starter · #12 ·
If I had to choose from the listed you provided, I would have to go with Kicker. Not a personal favorite but like mentioned, there always will be something better. I have always known JBL to have better Home Entertainment products, at least in the past versus car audio. :dunno:
Im so mad right now. A new kicker on ebay is normally $220.00 + shipping... Someone just got one for $142 + shipping!!! I forgot to check when the bidding ended and only bid up to $140!!!!! :mecry:

Kicker ZX650.4 Four Car Stereo Amplifier NIB - (eBay item 250195915919 end time Dec-14-07 13:51:43 PST)
 

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BoomGoesTheDynaMitt
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Is there any other way to do it besides one speaker per channel?
Sure. Depending on the stability of the amp (the ohm load it can handle per channel) you could have a variety of setups. You could have 2 channels bridged so the power from both channels was driving one speaker, or you coud have multiple speakers running off of one channel. I think my mid/high amp can run 16 4ohm speakers off of each channel without skipping a beat. Not sure if I am doing the math right but each channel is .25ohm stable. Most amps are 2oh or 1ohm stable (in stereo mode - using seperate channels). Bridged (combining channels) stability is normally twice the stereo stabilty.

Is the signal to noise ratio really that bad? What do you mean by suppressing line noise? (possible dumb question) How much difference in volum do you think there would be between the MB and the Kicker?
That low s/n ratio just seems super low to me. I haven't heard the amp so I cannot say what I think of it. As for volume.... I could only assume the kicker would be louder. By supressing line noise I am referring to the amp's ability to remove "static" or "alternator whine" or "noise" from the signal path. That would mean the sound is cleaner but it would most likely be "subdued" or have less volume given the same input as an amp with a higher s/n ratio.

In general I look at it like this:
high signal to noise ratio = louder but with more chance for noise
low signal to noise ratio = quieter but with less distortion/noise
*This isn't a rule but I have found it to be fairly accurate.
 

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Discussion Starter · #14 ·
Hey everyone. Thanks for your input in this thread. I wanted to update ethis thread and tell everyone that i ended up getting the ZX650.4. Again thanks for your responses!!!
 
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