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Thread: e46 M3 audio issue...

  1. #11
    MrZ
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    I used an X-tronic USB Amp instead of the HU. Right now at max level I'd chew the speakers, so it's as loud as with the HU.

    My setup: Comp -> Xtronic USB DAC Amp by USB -> car audio.

    I've set a 31-Band EQ by using some software and I'm all set with that.

  2. #12
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    so you have that amp and then the stock hk amp as well? Did you use sven4 at all? how did you integrate from the usb amp to the metra harness?

  3. #13
    MrZ
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    I have the HK, yes. No Sven4 involved, just the Xtronic USB DAC Amp.

    The USB Amp has got a Molex style connector for the speakers, 12v Acc in and 12v out lines. You can use any adaptor that fits your car harness and cut the other end, then pair the cables with the USB Amp molex as if it was the HU.

    That way the HK amp receives more or less the same power and signal it did with factory settings. USB Amp is a 4x40 unit, pretty much the same as the HU.

  4. #14
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    why pay for all that I have a e46 M3 setup with a carputer and my volume was low. I ended up getting a Auzentech Forte 7.1 X-FI sound card. It increased my volumes by 200% and the sound is next to amazing. I had used onboard and also usb sound cards before this and sound volume at 100% sounded like it was at 50%.

    PM me if you need more help or tips. I am also using a HK stock amp with my system (no way to control the stock amps volume without head unit).

    ** as for bass well the HK stocks speakers actually isnt the best and sucks at bass. what I did do which was very easy was I added a amp and sub in my trunk hooked it up to my Auzentech 7.1 soundcard to the center\sub channel. So my 4 stock front speakers is still connected by factory amp and I added a extra amp\sub. Now my sound has very good bass. The biggest trick for best sound is to set my speakers to 4.1 configuration and the X-FI software.

  5. #15
    MrZ
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    Quote Originally Posted by potpeye View Post
    why pay for all that I have a e46 M3 setup with a carputer and my volume was low. I ended up getting a Auzentech Forte 7.1 X-FI sound card.
    So you wouldn't pay for a external USB DAC Amp (which is basically an external soundcard with Digital Audio Converter and 4x40 Amp) and would pay for a INternal sound card?

    It's the same as saying I wouldn't buy a red apple but a green apple.

    As for sound, I'm using a VST Host to run realtime VST plugins. You can basically add whatever you need: crossovers, filters, EQ, Dinamizers, compressors, noise gates...

  6. #16
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    usb dac amp from what I read u would need it for each channel so for 4.1 you need to buy 3 of them. I am just suggesting what I did and I have the same car as the poster with the HK speakers system and factory amp.

    Also I understand USB DAC is pure sound but those please inform the poster that those DAC is only left and right audio channel per dac that I have seen. ( If i am wrong please post me one that isn't cause i would like one) So re-setting up his connection and purchasing at least 2 DAC along with other things well is a project in it own.

    Also setting up VST Host and setting the audio isn't that easy and can be a long project on it own to get right where using a solid internal sound card with X-FI is a no brainer.

    SO yea apple and oranges but one is sure easier than the other especially when I am also using the same SVEn to harness setup as the poster.

  7. #17
    cheap custom title JC-S60's Avatar
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    The USB DAC Amp is indeed only stereo (like the original head unit) and meant to simplify the installation. Only a USB cable runs to the spot where the head unit was, no interference or ground loops.
    It does have 4 speaker outputs but they are 2x stereo (with fader adjusting on install so the levels between front and rear are ok for your car).

    If you want real surround sound, you need more channels (even more than the 4 available on the factory amp, so you'd need extra amps too).

    If you want the same audio you had with the head unit, and an easy install (no drivers, compatible with MacOS, Linux, Windows...) the solution MrZ explained is a very good option.

  8. #18
    MrZ
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    Quote Originally Posted by potpeye View Post
    usb dac amp from what I read u would need it for each channel so for 4.1 you need to buy 3 of them. I am just suggesting what I did and I have the same car as the poster with the HK speakers system and factory amp.
    The original poster wasn't asking for 4.1, just an output level similar to that of the HU.
    Plus, to have real 4.1 sound you would need to separate that signal properly to each of the four speakers (or group of speakers in the HK setup), and using the factory amp doesn't allow that.

    Also setting up VST Host and setting the audio isn't that easy and can be a long project on it own to get right where using a solid internal sound card with X-FI is a no brainer.
    Well, it took me no more than one hour in the car. Software involved: Virtual Audio Cable, VST Host and ASIO4all.

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