Question:

I have 2 1100 rms subs dual voice coil 4ohms and a 4000rms amp,ran it at 4 ohms, how high can i turn the gain?

by  |  earlier

0 LIKES UnLike

I have 2 1100 rms subs dual voice coil 4ohms and a 4000rms amp,ran it at 4 ohms, how high can i turn the gain?

 Tags:

   Report

5 ANSWERS


  1. jr1001 has it about right.

    If you want to understand what the gain is for, it's to match the input stage of your amplifier with the output voltage of the head unit.  It's got nothing to do with your speakers.

    What they're talking about with the voltage and what not can be tricky too since loudspeakers are dynamic and do not have a set impedance.  As you change the frequency being played by the speaker, it's impedance changes.   So you have to be careful and make sure you know what your doing or it's going to be all wrong anyway.

    Your best best is to just listen for the distortion.  Turn the gain all the way down.  Turn off all your bass boosts, etc on the amp, deck and any other processors you have.  Find some bass test tones or maybe just try using a bassy CD that you may own.  Turn your deck volume about 3/4 the way up (most HUs begin to clip at about 3/4 volume).  Then, start to turn the gain on the amp up until you hear a change in the way the bass sounds (not volume, but it sounds different).  That's the clipping.  Then back it down a bit and you'll be as set as you can be.


  2. gain level should be matched with the voltage level from the headunit being used. If you have a voltage meter that would give you the precise level. But, no matter what you do... DO NOT CRANK THE GAIN ALL THE WAY UP. its not necessary. When I don't have the access to the necessary equipment, I usually back the gain down to 1/4 moving it up GRADUALLY, listening for distortion. When you hear distortion back the gain down just a hair. I never go over 3/4 of the gain level. If you do you have probrably gone too far.

    Hope this helps.

  3. Tuning works best if you have a digital multimeter.  Turn the amp gain all the way down.  Get a bass tester and play this sound.  With the meter connected to the speaker output of the amp, slowly turn the gain up until it reaches around 64 to 65Volts.  If you calculate it this is a little more than 4000 watts coming out of you amp to your speakers.

  4. Nobody really tells you HOW to set it, so I will...

    The purpose of the gain is to match the signal volts RMS coming from the source (CD player, etc.) to the input of the amp to prevent clipping (damage by over powering).

    Here is a guide that will help you set the gain correctly http://www.datafilehost.com/download.php...

    You'll need a multi-meter (AC voltmeter), Microsoft Excel and a way to burn an audio CD from an MP3.

    If you don't have Excel, use this link http://www.box.net/shared/nkkw1dhk4g

    See my site for more info http://spkrbox1.spaces.live.com

  5. Follow what the manufacturer suggests if you can find it. If not I would give them a call. If you have no other choice, it's a matter of guess and check. Turn it all the way down, and just keep increasing it until you start to hear something funky.

Question Stats

Latest activity: earlier.
This question has 5 answers.

BECOME A GUIDE

Share your knowledge and help people by answering questions.