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How to Tune TXD10005 5 Channel Amplifier

Tuning your amp is crucial to proper output and a long healthy life from your amplifier. By following the tuning steps below, your amp will produce maximum CLEAN power, provide the proper frequencies to your speakers / subwoofer(s) and provide many years of great audio!

Step 1: Adjust Amp Knobs & Switch Configuration (Pre-Tune)

Adjust the knobs and switches as listed below:

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Front Speaker Knobs / Switch Pre-tune Settings:

FREQ – Set to 40Hz / MIN
X-OVER – Set to FULL
SENS – Set to MIN

Rear Speaker Knobs / Switch Pre-tune Settings:

FREQ – Set to 40Hz / MIN
X-OVER – Set to FULL
SENS – Set to MIN

Subwoofer Knobs / Switch Pre-tune Settings:

SENS – Set to MIN
SUBSONIC – Set to 10 Hz / MIN
BOOST – Set to 0dB
LPF –  Set to 250Hz / MAX


Set to 5CH

Step 2: Insert Blue Molex Plugs Into Front, Rear & Subwoofer Inputs:

TXD10005 5 Channel Amp Tuning Instructions

Our plug and play harness systems are setup to work the same regardless of vehicle. The BLUE Molex plugs provide the input signal into the TXD family of amplifiers.

Blue Molex – Purple / Green Wires (Rear Speakers / Channels)

Blue Molex – White / Gray Wires (Front Speakers / Channels)

Blue Molex – Purple Wires ONLY ( Subwoofer(s)

3.5MM Jack -Subwoofer control knob. Plug in to amp and turn to MAX volume on the bass control knob.

Step 3: Remote turn on wire

Connect the Blue or Red remote turn on wire included in your PNP wiring system. NOTE: If using an aftermarket head unit, use the blue remote wire from your aftermarket head unit. See our Aftermarket installation instructions here:

How to Tune 5 channel Amplifier TXD10005

Step 3: Subwoofer wire connection

Connect a short piece of 12G wire to your subwoofer output. Strip the ends and be sure the + and – do not come in contact with each other.

How to tune TXD10005 5 Channel Amplifier

Step 3: Output Wire Connections

DO NOT PLUG IN THE BLACK MOLEX PLUGS FROM YOUR PLUG AND PLAY HARNESS AT THIS TIME! We will plug them in AFTER the tuning process has been completed.

Locate the Black Molex connectors that have the SHORT white / gray & purple/ green wires. They are located in the same bag with the Molex / RCA connectors.

NOTE: If you are using aftermarket head unit, you will want to refer our after market head unit / tuning video.

Step 4: Tuning Video Instructions:

NOTE: The TXD10005 is best suited to work with 4 Ohm Front & Rear Speakers. If you have upgraded your speakers, please be certain you are using a component set for your front speakers to ensure you are providing a 4 Ohm load. Resistance below 4 ohms may cause excessive noise.

Download Test Tones Here

High Pass Filter Calculator (Speakers)

Low Pass Filter Calculator (Subwoofer)

Tools you will need to complete the tuning process:

  1. CD with test tones burned in the proper order (download below)
  2. Digital Multimeter (DMM)
  3. Small screwdriver