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    Pioneer GM-D8604 Amp Dyno

    Maybe this one can replace the Soundstream as the go to Budget 4 channel

    https://www.youtube.com/watch?v=dslY...1k3rixw03c010c



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    Re: Pioneer GM-D8604 Amp Dyno

    Quote Originally Posted by bigblank69 View Post
    Maybe this one can replace the Soundstream as the go to Budget 4 channel

    https://www.youtube.com/watch?v=dslY...1k3rixw03c010c
    Have you seen the other version of these?

    https://pioneer-mea.com/en/products/gm-d9604/

    Sent from my SM-N950U using Tapatalk




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    Re: Pioneer GM-D8604 Amp Dyno

    Never saw that one before... Need to see if I can find it for sale...



    Head Unit: Pioneer Avic-5201NEX
    Amplifiers: Orion XTR1000.4, Alphard DB-2000.1D
    Front Speakers: Infinity Perfect 600 Components
    Rear Speakers: Image Dynamics ID6.5
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    Re: Pioneer GM-D8604 Amp Dyno

    Appreciate all the vids.

    One thing I wish more 4ch amps had is the simple addition of a x10 swith for the crossovers, which would convert this model's 40-500Hz over to 400-5kHz. This would allow folks who are truly on a budget to still do active crossover setups for their component drivers without the need for a DSP head.



    Quote Originally Posted by audioholic View Post
    Saying "clipping doesn't kill speakers" is a half-truth at best. Technically no, clipping itself does not hurt the speaker. But in clipping your amp, you can easily create a situation that WILL kill the speaker. Was the squared waveform the DIRECT cause of the failure? No. In the end, the answer is, always has been, and can only be... heat kills speakers. BUT, clipping increases heat generation, sometimes by a drastic amount. So to start a thread simply to state that clipping does not hurt speakers is, again, a half-truth at best.

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    Re: Pioneer GM-D8604 Amp Dyno

    I am a huge fan of the Pioneer amps. Great value and reliability.




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    Re: Pioneer GM-D8604 Amp Dyno

    These series have been hidden gems for a while. Some company/publication did a detailed review with benchmarks a couple years ago. If and when I redo everything these are what I plan on going with.

    Thanks again for the vid, BB.



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    Re: Pioneer GM-D8604 Amp Dyno

    The Pioneer GM-D amps are powerful, and at that price point, hard to beat. Now we need to find someone that wants to follow-up these amplifier dyno tests with signal reproduction and sound quality tests.




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    Re: Pioneer GM-D8604 Amp Dyno

    Quote Originally Posted by bigblank69 View Post
    Never saw that one before... Need to see if I can find it for sale...
    i didn't know the 4 channels would do 1 ohm.. that amp tested at about what the 9604 rates at so it may do 160x4 at 4 ohm..



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    2 ohms rule

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    Re: Pioneer GM-D8604 Amp Dyno

    Quote Originally Posted by BOOMINGRANDPA View Post
    i didn't know the 4 channels would do 1 ohm.. that amp tested at about what the 9604 rates at so it may do 160x4 at 4 ohm..
    Pioneer website says 130x4, its basically the same exact amp as the 8604



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    Re: Pioneer GM-D8604 Amp Dyno

    Quote Originally Posted by Jeffdachef View Post
    Pioneer website says 130x4, its basically the same exact amp as the 8604
    right so the 8604 tested higher than rated, i'm saying if same is true for 9604 it maybe close to 900.4



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    Quote Originally Posted by Boomin_tahoe View Post
    2 ohms rule

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    Re: Pioneer GM-D8604 Amp Dyno

    Quote Originally Posted by BOOMINGRANDPA View Post
    right so the 8604 tested higher than rated, i'm saying if same is true for 9604 it maybe close to 900.4
    You arent getting it lmao.... The are literally the same amp. The 9604 is more accurately rated while the 8604 is underated.



    09 Sienna Subs : Four Team Ascendant 18s......Sub amp: Two Taramps 15k
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    Re: Pioneer GM-D8604 Amp Dyno

    Quote Originally Posted by Jeffdachef View Post
    You arent getting it lmao.... The are literally the same amp. The 9604 is more accurately rated while the 8604 is underated.
    ok so this is just the newer version got ya.. thought it was upper model



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    Quote Originally Posted by Boomin_tahoe View Post
    2 ohms rule

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    Re: Pioneer GM-D8604 Amp Dyno

    So these have been out for a while too? I'm surprised they haven't gotten more recognition by now if so



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    Re: Pioneer GM-D8604 Amp Dyno

    I know one thing the 9604 is way more expensive than the 8604 and not nearly as many places have it in stock so if the 8604 is an older model it is probably going to be discontinued soon and then 9604 cost seriously twice as much if not more so if you're thinking about using these amps you had better grab them soon hopefully somebody can figure out more about it than I did but that's what it seems like to me which ***** because these seem like tiller amps especially that they can be bridged at 2 ohms because that is what I need for my mids and highs so I'm probably going to be trying to grab two of these very soon




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    Re: Pioneer GM-D8604 Amp Dyno

    Quote Originally Posted by Jeffdachef View Post
    You arent getting it lmao.... The are literally the same amp. The 9604 is more accurately rated while the 8604 is underated.
    Initially I thought the same thing but if you look at the GM-D8601 vs. the GM-D9601, the 9601 is physically longer and has a different board layout with a few more caps and transistors. The same is true for the comparison between the 8604 vs. 9604 with the 9604 being physically longer (the PDF illustrates this) so, although I haven't been able to compare the guts yet, there's a slim possibility that it has a few more components inside to support the marginally higher power ratings or bolster the reliability of the same actual power. Maybe not, maybe the heatsink is just longer for the sake of consistency. Or maybe it's an even bigger sleeper. Seems like the 8601 & 8604 are being phased out in favor of the slightly improved 9601 & 9604, rated for a bit more power and with any luck maybe even sounding better due to lower noise or whatever. Couple links to compare guts. Bonus vid for essqews.

    https://www.youtube.com/watch?v=ezEKHPdAuUw

    https://www.youtube.com/watch?v=ujYIgE96gk8

    https://www.youtube.com/watch?v=2fM6P7DMipQ


    Here are the guts for the 8604, haven't been able to find any for the 9604 so far. Maybe someone who has one will give us a money shot.

    https://www.youtube.com/watch?v=XneW1uQEnj8



    Quote Originally Posted by audioholic View Post
    Saying "clipping doesn't kill speakers" is a half-truth at best. Technically no, clipping itself does not hurt the speaker. But in clipping your amp, you can easily create a situation that WILL kill the speaker. Was the squared waveform the DIRECT cause of the failure? No. In the end, the answer is, always has been, and can only be... heat kills speakers. BUT, clipping increases heat generation, sometimes by a drastic amount. So to start a thread simply to state that clipping does not hurt speakers is, again, a half-truth at best.

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