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  • M4-ATX Turn on thump

    Hi all,

    I expect that this question has been answered already as I've found several threads complaining about the issue, but haven't found my solution yet. Here's my setup:

    - M4-ATX
    - Diamond Audio D3600.1 (sub amp)
    - Audison SRx2.1 (comp amp)
    - Image Dynamics IDQ10V3
    - Morel Tempo 6 two-way comp system

    I am getting a killer turn on pop when booting my computer. I didn't receive any instructions or paperwork (or even a box!) with my M4-ATX; nothing but the power supply, harness and turn on jumper. I took the liberty of looking up the manual online, and found that I can use jumper J6 to prevent amp turn on thump. Since I have two separate amps, here's how I hooked it up:

    I got a two pin (non-shorting) jumper and soldered a couple wires onto it (shouldn't I have received a jumper for this with the power supply, BTW?) Anyway the pin at the edge of the PCB is ground, inner pin is split into two wires and those are connected to the remote turn on leads (one for each amp).

    Alas I still have a massive turn on pop. I spent a lot of money on these speakers and amps and I know this isn't good for them. Did I do something wrong? How do I stop it from doing this???

    Thanks!

    Chris

  • #2
    have you tried wiring the anti thump to one amp only first?

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    • #3
      Bump!

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      • #4
        Honestly, in my setup I just connected my amps to one of the power supply's 12 volt rails. It was simple and I knew it would work. Easiest way to do it without worrying about anything.
        My Nearly Complete Car:
        http://www.mp3car.com/vbulletin/show...ed-car-pc.html

        Micro Control Center... Control Your Car Across the Internet
        http://www.mp3car.com/fusion-brain/1...-internet.html

        Website: (It's a work in progress, really. All my projects have taken me from ever really developing it.)
        http://paulfurtado.com/

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        • #5
          you need to setup the thump time using the configuration software
          connect the usb
          install the software from the m4 website
          and change the time to whatever you like ( default is something like 3 seconds.. )

          *be aware that from my experience the changes come to play only when i disconnected the 12v line and reconnected it after a couple of seconds
          HeadUnit : Car-Pc | Processor : JBL MS-8 | Front Stage : Woofer - Mpyre 65M , Mid - Dayton RS100-4 , Tweeter - Tang-Band Ceramic 25-1719S | Subwoofer : Hertz HX250D | Amps : A/D/S PQ10 , Hifonics Olympus XI , SPL AB03445 | Wiring : Sommer , Neutrik

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          • #6
            What do you mean "connect the usb"? I didn't get anything with my M4 but the power supply in a bubble wrap bag and the harness/jumper for the on off switch...did I get jipped?

            Also, what is the website for the M4 where I can get the software? And Paul, you mean to tell me you connected your amps 12V constant to a wire from your PC's power supply? If so I hope you are joking! Maybe it's just me but I certainly wouldn't power ANY amp off that tiny little wire...

            Edit: Madboy BTW how do you like that soundblaster card? And how do you have it wired? I need to get one cause the AC'97 sound isn't cutting it with brands like Diamond Audio and Audison, lol...I am looking for one with RCA outputs, at least two sets (one mono and one stereo would be ok since my Diamond amp is a monoblock).

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            • #7
              Oh rock sorry I missed your reply, no - I didn't try that. I could though

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              • #8
                no its ok , the cable isn't supplied with the psu...

                take a look at the manual here :
                http://www.mini-box.com/M4-ATX

                there is a usb pinout
                get a motherboard usb cable ( the same as you connect to the front usb headers of your case )
                and connect it to the psu and motherboard

                explained here also :
                http://www.mp3car.com/vbulletin/powe...ur-m4-atx.html

                the software also can be download from this site..

                i think paul meant that the remote is connected to the 12v line from the molex , not the power line

                about the sb card
                yeh i love it , i think it has the best money/quality ratio..
                it doesn't got rca outputs
                so i made ( not me actually , a studio equipment company ) custom 3.5mm to rca cables with good quality wiring ( sommer ) and plugs ( neutrik )..
                you can also use any 3.5mm to rca you want
                and if youre using 2 way passive front + sub you shouldn't have any problems..
                HeadUnit : Car-Pc | Processor : JBL MS-8 | Front Stage : Woofer - Mpyre 65M , Mid - Dayton RS100-4 , Tweeter - Tang-Band Ceramic 25-1719S | Subwoofer : Hertz HX250D | Amps : A/D/S PQ10 , Hifonics Olympus XI , SPL AB03445 | Wiring : Sommer , Neutrik

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                • #9
                  Excellent, thank you for the well-informed response. I'll try this stuff this weekend. Good choice on the Hertz tweeters, BTW. That's the "budget" brand of Audison. I absolutely love my little Audison 2channel, and it's the first of their brand I've ever used. If you ever change your front stage, I might recommend Morel for the mids. I used a set of high end Focals in the past and am more impressed with the 2nd model up from Morel, even though there are like 4 others above this model.

                  I can't imagine what a set of the top of the line model would sound like with a top of the line Audison...but then again I can't imagine spending $4000 on just a set of components and an amp for them

                  Could you give me a few more details on how you have your soundcard hooked up? I found a couple studio quality ones from mAudio that have several sets of RCA outputs and that looks really promising...

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                  • #10
                    One other question...I see that the M4 software is a .exe file. Does that mean I'm screwed since I'm using Ubuntu Linux? Or maybe I just need to configure the power supply outside the car from a windows PC? That wouldn't be a huge issue, since I work for an electronics manufacturing company and have access to lots of nifty toys

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                    • #11
                      i know morel
                      i live in israel which is the origin of morel
                      also their speakers are very very cheap here
                      but i don't like their sound ( not bright enough and really soft )..
                      tempo is a low end set and sounds really bad..
                      the elate woofers are good but i don't like their sound so..

                      actually my woofers are going to be replaced next week to mpyre 65m which is based on adire extremis 6.4 if you know them ( if you don't , google )

                      what else do you need to know about the sound card wiring?
                      its based on a sommer patch cable ( if you want the specific model let me know ill find it )
                      and the plugs ( rca , 3.5mm ) are neutrik ( germany not china )

                      about the m4 software
                      try to contact them but i really don't believe that there is a version for linux
                      so yeh taking it out and configuring it on a win based pc would be the way to go i think...
                      HeadUnit : Car-Pc | Processor : JBL MS-8 | Front Stage : Woofer - Mpyre 65M , Mid - Dayton RS100-4 , Tweeter - Tang-Band Ceramic 25-1719S | Subwoofer : Hertz HX250D | Amps : A/D/S PQ10 , Hifonics Olympus XI , SPL AB03445 | Wiring : Sommer , Neutrik

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                      • #12
                        Thanks for the advice...and wow, you are the first person I have ever heard say Morel sounds BAD. I've heard people say other brands sound BETTER, but maybe it's just a domestic vs. import thing

                        Here in the US good speakers are hard to come by and I love the sound of my Morels.

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                        • #13
                          Piston, I meant try plugging the remote line from the Amps right into the yellow wire from a hard drive connector on the M4. The thump you hear is from the PC turning on once the amps are on.

                          This works great because now the remote line only gets power once the pc is already on. Try it before wasting money on cables and messing with software.
                          My Nearly Complete Car:
                          http://www.mp3car.com/vbulletin/show...ed-car-pc.html

                          Micro Control Center... Control Your Car Across the Internet
                          http://www.mp3car.com/fusion-brain/1...-internet.html

                          Website: (It's a work in progress, really. All my projects have taken me from ever really developing it.)
                          http://paulfurtado.com/

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