Page 1 of 2 12 LastLast
Results 1 to 10 of 14

Thread: Amp switching cable - how can I activate it using my PC?

  1. #1
    Low Bitrate
    Join Date
    May 2001
    Location
    Dunstable, England
    Posts
    70

    Post Amp switching cable - how can I activate it using my PC?

    At the moment i'm using my Sony CDX-M700R head unit to switch my 2 amps on and then pumping the sound from my mp3 player straight into them.
    It seems an expensive way to switch them on (Head unit cost me 260 GBP - About $430) when my girlfriends mini could do with a new sound system.
    How could I get my pc to switch this lead on to power my amps up so I could do without the head unit???

    TIA
    Best regards,

    Darren Thrower
    http://www.percyt.com/mp3player.htm

  2. #2
    Variable Bitrate
    Join Date
    Feb 2001
    Location
    louisville,ky,usa
    Posts
    259

    Post

    it's a simple 12v+ lead. How do you turn the computer on? Could be done the same way.
    I cheat, I own an empeg.
    Meskimen's Law: There's never time to do it right, but there's always time to do it over.
    http://civic.mp3car.com

  3. #3
    Variable Bitrate
    Join Date
    Mar 2001
    Posts
    292

    Post

    You just buy a simple switch from radio shack. Wire it up. When the circuit is closed (connected), the amp is on. When it's open (disconnected), the amp is off.
    Player: Celeron II 633MHz, 256MB RAM, 20GB IBM 9mm 2.5" Laptop HD (180G/2ms), onboard ethernet/sound/video/tvout, 10"11"x3" case, MPBS1 70W DC-DC PS w/auto-shutdown controller, in-dash lighted switches, 7" NTSC TFT widescreen in-dash LCD, touchscreen, rear-window brake light installed Garmin GPS35 GPS, credit card sized IR remote w/IRMan, mini-wireless keyboard/mouse (sits under seat), PowerMate black knob, MP3s and GPS Navigation (Winamp, CoPilot, SA8.0).
    Car: 1993 Nissan Maxima, Black Emerald

  4. #4
    Variable Bitrate
    Join Date
    Jul 1999
    Location
    Greensboro NC
    Posts
    233

    Post

    Or you could simply run a 12v wire from the pc power supply to the remote lead on the amp.

    Catlas

  5. #5
    Low Bitrate
    Join Date
    May 2001
    Location
    Dunstable, England
    Posts
    70

    Post

    Yeah - but are all amp switching wires +12V ???

    I don't want to wire up my power supply +12v to it and blow my amps up!!
    Best regards,

    Darren Thrower
    http://www.percyt.com/mp3player.htm

  6. #6
    Maximum Bitrate
    Join Date
    Mar 2001
    Location
    Perth, Australia
    Posts
    539

    Post

    hmm ive got a newbie question, if your using a good amp head unit to amp (regardless of mp3 player) does the 45x4 watt the head unit can do get used or a budget 7x4 watt head unit plugged into a 90x4 amp do the same as a 45x4 watt head unit into a 90x4 amp?

  7. #7
    Low Bitrate
    Join Date
    May 2001
    Location
    Dunstable, England
    Posts
    70

    Post

    It would have been better putting this as a new topic - but none the less...

    I think I understand your question and the 4x45 watt amp in your head unit is used when you connect speakers DIRECTLY to it. Line outs that you connect to your amp don't use the head units internal amp.
    Put it this way: In your head unit, You have 4 channels coming from your CD laser pickup, mini-disc laser pickup, cassette head pickup or tuner and they are split - so you now have 8 outputs!
    4 go to the 4 channels of the head units internal amp, get amplified and then go to the speaker connections on the back of the head unit. The other 4 go to the RCA's on the back of the head unit, ready to be connected to your amp(s).

    You could connect a 4x7 watt head unit (something like this won't have RCA's on the back) to some amps - so the signal would get amplified twice - might sound a bit ****ty - but it would work. Probably better to get a decent head unit with RCA's and plug it straight into amps.

    Hope this helps!!
    Best regards,

    Darren Thrower
    http://www.percyt.com/mp3player.htm

  8. #8
    Newbie
    Join Date
    Dec 2003
    Posts
    2
    Quote Originally Posted by percyt2k
    At the moment i'm using my Sony CDX-M700R head unit to switch my 2 amps on and then pumping the sound from my mp3 player straight into them.
    It seems an expensive way to switch them on (Head unit cost me 260 GBP - About $430) when my girlfriends mini could do with a new sound system.
    How could I get my pc to switch this lead on to power my amps up so I could do without the head unit???

    TIA

  9. #9
    Newbie
    Join Date
    Dec 2003
    Posts
    2
    hello there percyt2t , im email if u can help me.........I need the cd code in for the sony cd unit, where I have lost the manual book, if I can have the code to operate the unit.......thank u

    hope for ur reply soon :-)
    sindy

    (CDX-M700R )

  10. #10
    Constant Bitrate Sway's Avatar
    Join Date
    Dec 2003
    Location
    Muncie, Indiana
    Posts
    120
    im useing a head unit to turn my amp on but how can i control the volume of my subs from th drivers seat

Page 1 of 2 12 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •