MTX TX6500D picture


500W RMS @2Ω mono block class-D amplifier with complete variable x-over and bridge mode


The MTX TX6500D mono block amplifier (500W) is an excellent power price compromise. It is also a marvel of technology because it is based on the same scheme as its predecessors, the TX81000D and RFL4001D. The quality of the components is at the same level, that is to say the perfection of IRF or Elna. The flexibility of its active filters and the possibility of mounting it as a bridge make it a cutting-edge weapon in the reproduction of infra bass. We spent two years developing and making it more reliable.

(+) Product

  • Class-D amplifier with state-of-the-art double-sided SMD component mounting
  • Special very high power subwoofer amplifier optimized for 2Ω loads
  • Bridged mode possible with 2 amps for "competition" power
  • All-aluminum frame and sides for better cooling
  • Thermo-regulated connector for one or two external fans
  • Milled MTX logo
  • Full active filter (continuously adjustable low pass and subsonic)
  • EBC remote control included to control the sub level from the front
  • Manufacturing quality


  • Class-D mono block 1-channel amplifier
  • CEA2006 certified power
    • 1x 500 watts RMS @ 2Ω and THD + N ≤1%
    • 1x 1000 watts RMS in bridged mode (Bridge)
    • 1x 300 watts RMS @ 4Ω and THD + N ≤1%
  • Active x-over
    • Low Pass (LPF) 24dB / Oct variable from 40Hz to 150Hz
    • Subsonic 24dB / Oct @ 30Hz
  • Signal / Noise ratio (1 watt): > 80dB
  • THD + Noise (Distortion) (1 watt): ≤1%
  • Frequency response (± 1dB): 20Hz-150Hz
  • RCA sensitivity level: 200mV to 6V
  • Dimensions: 125mm x 265mm x 50mm
  • EBC (External Bass Control) included
  • Cable for bridge mode included

Recommended performance associations

Recommanded MTX subwoofers: 1x TX615 or 1x T612 or 2x RT10-04 or RT12-04 or 2x RT15-04

  • The TX6500D can power a TX612 or TX615 subwoofer. You just have to connect the (+) of the sub and the (+) of the HP output of the amplifier. Same for (-).
  • MTX SLH subwoofers are perfectly suited to TX6 subwoofers.
  • It is possible to bridge two TX6500D amplifiers to make a 1000W RMS amplifier under 4Ω.
  • A thermoregulated connector allows one or two 12V computer type fans to be supplied in the event of severe use or in very hot regions.
  • The quality of your bass system will have the quality of the weakest link. You have to balance your bass system between the amp and the subwoofer. With the TX6500D amplifier, you must use a TX612 or TX615 sub.
  • To get the most from your TX6500D, you should use a quality power pack like the MTX ZNX21K, with careful assembly and a working battery.
  • Recommended effective combinations:
    • A TX6500D amplifier with 1x TX612 or 1x TX615 subwoofer
    • Two TX6500D amplifiers with 1x TX812 or 1x TX815 subwoofer
    • For the other front and rear speakers, the TX480D amplifier is perfectly suited
    • Power supply pack: MTX StreetWires ZNX21K

Wiring Diagram with one Subwoofer


Wiring Diagram Bridge Mode with two TX6500D



The power of the amplifier should not exceed that of the loudspeaker. You have to compare RMS powers with RMS powers. The amplifiers should not be exposed to moisture, excessive vibration, or high temperatures.


MTX wants you to enjoy your hearing for a long time. Excessive exposure to loud volumes can damage your hearing. The United States Department of Labor recommends not exceeding the following recommendations.

  • 90db : maximum 8 hours/day
  • 92dB : maximum 6 hours/day
  • 95db : maximum 4 hours/day
  • 97db : maximum 3 hours/day
  • 100db : maximum 2 hours/day
  • 102db : maximum 90 minutes/day
  • 105db : maximum 60 minutes/day
  • 110db : maximum 30 minutes/day
  • 115db : maximum less than 15 minutes/day
  • 120db : immediate danger, 0 minute/day

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