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  1. #1
    Rockguy475's Avatar
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    good info for amp settings

    took a little bit of searching to find this....



    Originally Posted by Jmac

    Amplifier Setting Tutorial

    Outline:
    Setting up an amplifier can be a very confusing and intimidating process for newbies. I created this to help guide those people through the process in what I consider to be a simple and easy way.

    Preparation:
    Things you should do and will need:

    1) Read the owner’s manual(s)
    2) Familiarize yourself with your equipment
    3) Determine the final load of your speaker(s)/sub(s)
    4) A calculator
    5) A digital multimeter
    6) A test tone CD
    7) A print-out of this guide
    8) A pen or pencil
    9) A notepad

    Note: All tests should be done with the engine running while using the calculation methods, at least for the part where you’re measuring.

    Step 1: Setting up your head unit

    1) Turn off all filters (low-pass and high-pass)
    2) Set your EQ settings to 0 (i.e. Bass, Treble, Mid)
    3) Turn off loudness
    4) If you won’t be using the head unit’s internal amp, turn it off (if possible)
    Step 2: Choosing the test tones you’ll use

    Tones can be found here: Test Tones

    I’ve provided 4 different sets of tones and I’ll give a brief description of why one would use that particular set of tones.

    0 dB:
    Pros – No chance of clipping, very small chance of damaging equipment
    Cons – Most music won’t reach 0 dB unless you’re running full range speakers, so you probably won’t get full performance

    -3 dB:
    Pros – Small chance of clipping with music in subs, small chance of damaging equipment, better performance than 0 dB
    Cons – Small amount of clipping on peaks with some music (speakers)

    -6 dB:
    Pros – Better performance than -3 dB and 0 dB
    Cons – User must be able to detect stress in equipment to prevent damage, moderate amount of clipping with some music (speakers), small amount of clipping with some music (subs)

    -10 dB:
    Not recommended for amateurs

    As implied in the above descriptions, the choice of music you listen to may influence the tones you use as well. With pretty much all genres, I found that the mids had peaks above -1 dB, so I wouldn’t recommend that newbies use anything higher than -3 dB for setting the speaker amplifier. However, bass (20 Hz - 80 Hz), is a completely different story. I’ve analyzed a few dozen different songs from a variety of genres with Adobe Audition and here are some briefs descriptions.

    Rap/Hip-Hop/Pop – Most of the songs in these genres had peaks in the -9 dB to -3 dB range. I recommend using 0 dB or -3 dB tones if you primarily listen to these genres.

    Rock/Metal/Jazz/Classical – Most of the songs in this genre had peaks in the -12 to -6 dB range. I recommend using 0 dB, -3 dB, or -6 dB tones if you primarily listen to these genres.

    After choosing the tones, download them and burn them to a CD.
    Step 3: Setting up your speakers

    If using the head unit’s internal amplifier:

    Method 1: By ear

    1) Using music you’re familiar with, turn up the volume until you begin to notice distortion or you achieve the desired volume (whichever comes first)
    2) Write down the volume
    3) Change music to a bass heavy track and set to repeat (if your HU has no HPF, disregard this and the following)
    4) Turn on the high-pass filter and set to the highest frequency
    5) Turn up the volume to the volume written in Step 2
    6) Turn down the HPF frequency until you begin to notice audible distortion
    7) Use the lowest HPF frequency with no distortion
    8) Turn the volume down to 0 and turn off head unit

    Method 2: Calculation

    1) Open your owner’s manuals and find the RMS power output of your head unit’s internal amplifier and the rated RMS input for your speakers. Write down both and use the lower of the two in the next step.
    2) Calculate the desired voltage using the formula: Voltage = SQRT(Power*Resistance)
    3) Write down the desired voltage
    4) Set the volume to 0 and turn off the head unit
    5) Unhook one of the speakers
    6) Attach the leads of the multimeter to the speaker wires (do not ground speaker wires or leads)
    7) Set multimeter to measure AC voltage
    8) Turn on the head unit
    9) Adjust the balance and fade to only the speaker that is unhooked (i.e. If using front right speaker, balance to the right and fade to the front)
    10) Insert the test tone CD
    11) Fast forward to the 1000 Hz track and set to repeat track
    12) Turn volume up until you achieve the desired voltage
    13) Write down the volume
    14) Turn the volume down to 0 and shut the head unit off
    15) Unhook the leads from the speaker wires
    16) Hook the speaker back up and remount
    17) Turn the head unit back on (if your HU has no HPF, disregard this and the following)
    18) Insert a bass heavy track and set to repeat
    19) Turn on the high-pass filter and set to the highest frequency
    20) Turn up the volume to the volume written in Step 13
    21) Turn down the HPF frequency until you begin to notice audible distortion
    22) Use the lowest HPF frequency with no distortion
    23) Turn the volume down to 0 and turn off head unit
    24) In the future, do not exceed the volume written in step 13

    If using dedicated speaker amplifier:

    Method 1: By ear

    1) Turn the gain/sensitivity all the way down (counter-clockwise)
    2) Turn head unit on
    3) Insert music you’re familiar with
    4) Turn volume up to maximum volume you will normally use or 80% of maximum volume
    5) Turn the gain up until you reach the desired volume or you notice audible distortion
    6) Turn the volume down
    7) Turn the high-pass filter on. If your HU and amp both have HPFs, use the one with the most flexibility (continuously variable > selectable > fixed) (if your head unit and amplifier have no HPF, disregard this and the following)
    8) Turn the HPF up to the highest frequency
    9) Insert a bass heavy track and set to repeat
    10) Turn the volume up to the volume written in Step 9
    11) Turn down the HPF frequency until you begin to notice audible distortion
    12) Use the lowest frequency with no audible distortion
    13) Turn the volume down to 0 and turn off the head unit

    Method 2: Calculation

    1) Open your owner’s manuals and find the RMS power output of your amplifier and the rated RMS input of your speakers. Write down both and use the lower of the two in the next step.
    2) Calculate the desired voltage using the formula: Voltage = SQRT(Power*Resistance)
    3) Write down the desired voltage
    4) Turn the gain/sensitivity all the way down (counter-clockwise)
    5) Unhook all speakers from the amplifier (unhook at the amplifier, not at the speakers)
    6) Insert leads of multimeter into one of the channels and tighten slightly
    7) Set multimeter to measure AC voltage
    8) Turn head unit on
    9) Insert test tone CD
    10) Set track to 1000 Hz and set to repeat
    11) Turn volume up to maximum volume you will normally use or 80% of maximum volume
    12) Write down the volume
    13) Slowly turn the gain up until you reach the desired voltage
    14) Turn the volume down to 0 and turn off head unit
    15) Remove multimeter leads from the amplifier
    16) Hook speakers back up to the amplifier
    17) Turn head unit on (if your head unit and amplifier have no HPF, disregard this and the following)
    18) Turn the high-pass filter on. If your HU and amp both have HPFs, use the one with the most flexibility (continuously variable > selectable > fixed)
    19) Turn the HPF up to the highest frequency
    20) Insert a bass heavy track and set to repeat track
    21) Turn the volume up to the volume written in Step 12
    22) Turn down the HPF frequency until you begin to notice audible distortion
    23) Use the lowest frequency with no audible distortion
    24) Turn the volume down to 0 and turn off the head unit
    25) In the future, do not exceed the volume written in Step 12



    Listen to Hip-Hop/Rap especially when its Chopped&Screwed, classic rock, hard rock, and most electronic
    Car: 2014 Mustang
    Sub: Jl Audio 12W6v2
    Amp: 16-SRX1.500
    HU: Stock
    Front speakers: Stock shaker system
    Back speakers: Stock shaker system
    Sub box: Custom built for W6 for mustang trunk




  2. #2
    Enemy5802's Avatar
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    Re: good info for amp settings

    Pardon the ignorance, but this IS for a amplifier and a subwoofer right?




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    Enemy5802's Avatar
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    Re: good info for amp settings

    Never mind, disregard that last comment. Lol. Thanks this will be useful.




  4. #4
    Rockguy475's Avatar
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    Re: good info for amp settings

    Quote Originally Posted by Enemy5802 View Post
    Pardon the ignorance, but this IS for a amplifier and a subwoofer right?
    For subs an speakers when settings your gains and settings on amp



    Listen to Hip-Hop/Rap especially when its Chopped&Screwed, classic rock, hard rock, and most electronic
    Car: 2014 Mustang
    Sub: Jl Audio 12W6v2
    Amp: 16-SRX1.500
    HU: Stock
    Front speakers: Stock shaker system
    Back speakers: Stock shaker system
    Sub box: Custom built for W6 for mustang trunk

  5. #5
    alec14's Avatar
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    Re: good info for amp settings

    Thank you, I found this helpful



    Bought from: flastrongman, nitefury 360, luckyderder, Jayzbent, fasfocus00, flaboy22, oldschool4me, Chevy Blazin', Inter007, dross93ranger, 04murdalanche, glitchsta, photocrazy8, 2002XLT

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