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Thread: 2004 VW R32 Install - NOT DIAL-UP FRIENDLY

  1. #141
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    still a little confused...
    you're putting line-level (about 200mv peak) into the monsoon and it's working properly? If on my motherboard I don't have line out, but rather speaker out (since this is about 3v peak), i need to get a speaker to line-level convertor?

    The common (-) is the same for both left and right channels right, since the line-out or speaker out only has left, right, and common. Putting the 5v on the left common will also put it on the right channel too, correct?

  2. #142
    Maximum Bitrate R32 JUhl's Avatar
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    Quote Originally Posted by alimh
    still a little confused...
    you're putting line-level (about 200mv peak) into the monsoon and it's working properly? If on my motherboard I don't have line out, but rather speaker out (since this is about 3v peak), i need to get a speaker to line-level convertor?
    Well, I never said my 200 mV was "peak", so let's make sure we have that clear for starters. I put the radio and the carputer at half volume and 200 mV is what I was reading with the music I was playing. I have no clue what the peak output was. And no, you don't need a converter. Plug directly into the port you would normally plug your desktop speakers into. Perhaps I chose the improper verbiage when saying "line level". For simplification, just use the port you'd normally use for your speakers.

    Quote Originally Posted by alimh
    The common (-) is the same for both left and right channels right, since the line-out or speaker out only has left, right, and common. Putting the 5v on the left common will also put it on the right channel too, correct?
    From the factory, each common/ground (-) has its own designated wire. If you're going to tie them all together, then yes, you'll be applying it to the right channel as well. Some guys are using multi-channel sound cards so they have designated commons for each channel. Applying power to the right channel common doesn't harm anything! What we found was the left common turned it on and the right common could KEEP it on, if powered. But it did not cause any adverse effects.
    My first attempt at a carputer.

    PM me if you're interested in a monitor faceplate for your '99-'04 Golf or Jetta. My Vortex ID is NorthAtlR32 - you can IM me there, too. Go here for more information.

  3. #143
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    all right! that's great news. that's all I wantd to hear!

    I'll be trying mine by the end of the week.

    THanks for the help!

  4. #144
    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
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    hey, great install in a great car..... 400+hp...... that's a nice ride.... & although shes not exactly a "sleeper" I'm sure she shocks her oponents..... do you use the pc for any data logging or performance measuring... I'd asume you defanately use it for tunning....

  5. #145
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    what i did was this. i stole the 5v from the computer (red wire) with 18 gauge wire then simply connected it to the left common. the audio is split this way, a 1/8 to rca cable from the computer...spliced and soldered into 4 lines of 18 gauge speaker wire for FR, FF, RR, and RF. anything connecting to the monsoon amp was connected at the grey harness on the amp with radioshack tap line connectors.

    now the problems. When i connect a separate ipod to the 1/8", sound is GREAT. no noise, just clean sound. HOWEVER, when i connect it to my sound card, i get FULL volume noise, if the lilliput is getting absolutely no power (ie, unplugged). If I plug the lilliput on, its gone...all sound is gone. (ipod would still work if lilliput is on). Now, my pc is running off of a inverter, and the noise starts when i turn the inverter on, not the amp. so since the computer is not on, then there is no 5v, meaning amp is off. but still lots of noise.....
    I can sort of get it working if I only insert the plug halfway into the sound card... sounds like crap tho

    help please....

    Sorry bout the inconsistent writing...im really freakin frustrated....it worked briefly yesterday with lots of noise. I tested everything separtely. pc sound works, car speakers work...connections are good cuz ipod works... just throw everything together and its hell.

  6. #146
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    oh, and theres a 10k resistor in series of the 5v turn on.....

  7. #147
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    R32 JUhl if you are still getting ground noise you can put a dc filter inline to where you are entering the 5v from the regulator. what i did was placed 2- 1000uF 35V electroletic caps with the negaivtes tied together and the positive of each cap is the input and output this will make sure the dc is not getting back into the computer or leaving the computer into the amp.

  8. #148
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    I need some advice now...

    This is my setup:
    I have a 1/8'' connector (regular stereo) that has 3 pins (left, right, and common). The left wire connects to the LF+ and LR+ of the monsoon. The right signal from the 1/8'' connets to the RF+ and RR+ of the monsoon. The common from the 1/8'' connects to the LF-, LR-, RF-, and RR- of the monsoon as well as a 5v signal from the m1-atx power supply (red wire).

    The amp turns on and I hear a little bit of static to confirm... The computer turns on fine... but when I plug the speaker 1/8'' plug into the computer, everything shuts off! This only happens when both the speaker 1/8'' plug AND the 5v turn on are on. Any ideas?

    Also, I used the 5v from the m1-atx but plugged the 1/8'' connector to the output of my laptop sound card and it works perfect!

    I think it might be a grounding issue... maybe the 5v is going back to the soundcard (which is grounded?) so there is a short. Also, somebody in the thread mentioned that their setup was getting really hot... maybe mine shuts off but theirs is still shorting but instead of turnng off just getting really hot. I guess I need to put a capacitor to block out the DC from coming back into the soundcard, but I don't understand exactly where to put it...

    Any help would be much appreciated!

  9. #149
    Maximum Bitrate R32 JUhl's Avatar
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    Quote Originally Posted by turbocad6
    hey, great install in a great car..... 400+hp...... that's a nice ride.... & although shes not exactly a "sleeper" I'm sure she shocks her oponents..... do you use the pc for any data logging or performance measuring... I'd asume you defanately use it for tunning....
    Thanks man! We haven't stepped up to the turbo system just yet. The plan all along was to use this system for monitoring and tuning, but Teresa has kept us very busy with a variety of modeling contests. Maybe this winter things will calm down and I'll get to finish the install.

    Quote Originally Posted by vdoubleu
    what i did was this. i stole the 5v from the computer (red wire) with 18 gauge wire then simply connected it to the left common. the audio is split this way, a 1/8 to rca cable from the computer...spliced and soldered into 4 lines of 18 gauge speaker wire for FR, FF, RR, and RF. anything connecting to the monsoon amp was connected at the grey harness on the amp with radioshack tap line connectors.

    now the problems. When i connect a separate ipod to the 1/8", sound is GREAT. no noise, just clean sound. HOWEVER, when i connect it to my sound card, i get FULL volume noise, if the lilliput is getting absolutely no power (ie, unplugged). If I plug the lilliput on, its gone...all sound is gone. (ipod would still work if lilliput is on). Now, my pc is running off of a inverter, and the noise starts when i turn the inverter on, not the amp. so since the computer is not on, then there is no 5v, meaning amp is off. but still lots of noise.....
    I can sort of get it working if I only insert the plug halfway into the sound card... sounds like crap tho

    help please....

    Sorry bout the inconsistent writing...im really freakin frustrated....it worked briefly yesterday with lots of noise. I tested everything separtely. pc sound works, car speakers work...connections are good cuz ipod works... just throw everything together and its hell.
    Since there is a thread dedicated to this in another forum, I'm going to address your concern in that thread.

    Quote Originally Posted by colorless
    R32 JUhl if you are still getting ground noise you can put a dc filter inline to where you are entering the 5v from the regulator. what i did was placed 2- 1000uF 35V electroletic caps with the negaivtes tied together and the positive of each cap is the input and output this will make sure the dc is not getting back into the computer or leaving the computer into the amp.
    Thanks, but the problem is related to noise on the from the power supply. Every click of the hard drive and input from a USB device can be heard through the speakers. I believe it's the result of improper grounding of my motherboard. Once I have time to address, I will... and I'll report back.

    Quote Originally Posted by alimh
    I need some advice now...

    This is my setup:
    I have a 1/8'' connector (regular stereo) that has 3 pins (left, right, and common). The left wire connects to the LF+ and LR+ of the monsoon. The right signal from the 1/8'' connets to the RF+ and RR+ of the monsoon. The common from the 1/8'' connects to the LF-, LR-, RF-, and RR- of the monsoon as well as a 5v signal from the m1-atx power supply (red wire).

    The amp turns on and I hear a little bit of static to confirm... The computer turns on fine... but when I plug the speaker 1/8'' plug into the computer, everything shuts off! This only happens when both the speaker 1/8'' plug AND the 5v turn on are on. Any ideas?

    Also, I used the 5v from the m1-atx but plugged the 1/8'' connector to the output of my laptop sound card and it works perfect!

    I think it might be a grounding issue... maybe the 5v is going back to the soundcard (which is grounded?) so there is a short. Also, somebody in the thread mentioned that their setup was getting really hot... maybe mine shuts off but theirs is still shorting but instead of turnng off just getting really hot. I guess I need to put a capacitor to block out the DC from coming back into the soundcard, but I don't understand exactly where to put it...

    Any help would be much appreciated!
    Since there is a thread dedicated to this in another forum, I'm going to address your concern in that thread. This thread needs to get back on topic.
    My first attempt at a carputer.

    PM me if you're interested in a monitor faceplate for your '99-'04 Golf or Jetta. My Vortex ID is NorthAtlR32 - you can IM me there, too. Go here for more information.

  10. #150
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    Quote Originally Posted by R32 JUhl
    I concur 100%!

    I measured the A/C output of the speakers before the Monsoon Amp - after the radio, in other words. And since it's a rapidly varying signal and it is dependent on whatever music is being played, it is not an exact science! But my readings were roughly 200 mV - roughly the same voltage you will measure directly out of your carputer. The graduated volume level display on the VW HU and the computer's volume can be set to identical levels (graphically). From there, it's easy to verify that the line-level voltages are very close to the same.

    I conducted some trial and error testing using the misinformation on the boards (here and 'tex) about "amped" inputs and the results were horrific - lots of speaker popping and screaming going on!
    Rock-on. I appreciate you going through the BS to find that out. This will make my life much easier.

    Quote Originally Posted by R32 JUhl
    We missed you at the R32 GTG, by the way! http://forums.vwvortex.com/zerothrea...15933#22315933
    Doh!!! I can't believe I missed that. I've been out of pocket for a while due to being in the middle of nowhere training my replacements. Hopefully I can make it next time.

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