Closed Thread
Results 1 to 3 of 3

Reload Thread: Head Units and Amplifier Pre Amp voltages..

  1. #1
    Liamz's Avatar
    Liamz is offline Junior Member



    Join Date
    Mar 2003
    Location
    New Zealand
    Age
    33
    Posts
    1
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Head Units and Amplifier Pre Amp voltages..

    How important is the pre-amp voltage of a head unit?
    I am considering buying a headunit with a 2.2V pre-amp at 1Kohm impedence.

    My amplifer has a 200mV -2V sensitivity rating,
    with an input impedance of 20K Ohm -
    could this cause an issue with the new h/u?

    My other option is an external Equaliser, which has input
    gain controls, and obviously EQ functionality, which
    my current head unit does not.

    I have been told that if you have a higher head deck pre amp
    voltage, or another device such as a line booster or EQ which
    can do the same thing,
    in between the h/u and amplifier, that the signal into the amp
    will be stronger , and cleaner allowing a stronger and cleaner
    sound output.

    Head Deck (considering buying)- Pioneer DEH-P6550
    EQ (considering buying) - EQ215
    Amplifer - Phoenix Gold B-44 (same as M-44)

    Regards

    Liam







  2. #2
    ws140's Avatar
    ws140 is offline ~`[]D[]][\/]][[]D`~



    Join Date
    Oct 2002
    Location
    MA
    Age
    29
    Posts
    671
    Post Thanks / Like
    Mentioned
    0 Post(s)
    The pre amp voltage dosen't make that big of a difference as long as it is 2.0 or more. It is true that the higher pre amp voltage the cleaner the signale will sound, but only to a point. The gian control takes care of the different pre amp voltages coming out of different h/u's. I think you will be fine.




  3. #3
    maylar's Avatar
    maylar is offline Electrical Weenie



    Join Date
    Jan 2002
    Location
    Connecticut
    Age
    62
    Posts
    3,372
    Post Thanks / Like
    Mentioned
    13 Post(s)
    1K-ohm preout impedance is kinda high. It makes it hard to drive long RCA cables, and increases the chances of picking up noise. I thought all the Pioneer's were 100 ohms or less.

    The sensitivity of the amp sounds typical.



    dave
    ----------
    1999 Buick Park Ave Ultra
    Head Unit: JVC KWHDR720
    EQ: Audiocontrol EQL
    Front Stage: Hybrid Audio Technologies Imagine 5.25 mids, Morel Maximo tweets
    Sub Stage: Boston G3 10", 0.5 cu ft sealed
    Amp: PPI Phantom 900.4
    Rear Fill: Boston SE953 6X9's

Closed Thread

Posting Permissions

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

1e2 Forum