TA4252 Owner’s Manual
Introduction
Thank you for choosing MTX to help reach the ultimate goal with your vehicle. Adding MTX amplifiers and
matching MTX speakers and subwoofers with StreetWires connections will put you in a better position to
hear, feel, and experience all of the music the artist intended.
Specifications
Primary Ratings:
Power Output: 63 watts RMS x 2-channels at 4 ohm and
≤
1% THD+N
Signal-to-Noise Ratio (1 watt): 77dB
Secondary Ratings
Power Output: 125 watts RMS x 2-channels at 2 ohm and
≤
1% THD+N
Power Output: 250 watts RMS x 1 bridged at 4 ohm and
≤
1% THD+N
THD+Noise (Distortion) (1 watt):
≤
.1%
Frequency Response (-3dB): 20Hz-20kHz
Maximum Input Signal: 10V
Maximum Sensitivity: 100mV
Dimensions: 9-5/8” x 16-11/16” x 2-1/2” (245mm x 425mm x 65mm)
Smart Engage™ Auto-Turn-On (Patent No: US06556683)
Patented Pure N-Channel Technology (Patent No: US05631608, US05783970)
Patented Power Supply (US05598325)
Input Sensitivity Switch: 100mV-1V/1V-10V
Crossover: Hi, 12dB / Low, 24dB Mono @ 85Hz, Defeat
ThunderEQ Boost: 0-18dB, Freq. 40Hz
Remote Subwoofer Level Control
Features
1. Prizm EFX – All MTX amplifiers include backlit adjustment controls on the top surface of the product.
• Color – The backlit controls offer unlimited colors on the display -- from RED, GREEN, and BLUE to any color
in between.
• EFX – You can switch Prizm EFX lighting to “pulsate” with the beat of the music.
2. Xtant Technology Cooling (XTC) – A thermal-regulated turbo-charged intercooler supplies fan forced cool air
evenly and constantly through tightly packed bonded fins. Fan speed is continuously varying and controlled
by the amplifier’s output, temperature of heatsink, and transformers. Exhaust from the internal heatsink is
strategically positioned to cool the transformers to maintain maximum performance at all volumes.
3. Bi-Level Inputs with Smart Engage™ – All MTX amplifiers feature RCA type input connections.
• Low Level Input – Source units with an output signal level of 100mV–10V may be used. See “Input
Sensitivity” for proper voltage level setting.
• High Level Inputs with Smart Engage™ – All MTX amplifiers allow high level inputs through RCA type
input connections using provided high level adapters. Source units with an output signal level of 100mV–10V
may be used. See “Input Sensitivity” for proper voltage level setting.
• Smart-Engage™ Auto-Turn-On - An auto-turn circuit is included within the amplifier. A remote turn-on
wire is not necessary when connecting the amplifier’s high-level input to a high-powered source unit (car
stereo). The amplifier will automatically turn on when music is received through this type of connection.
4. Input Sensitivity – The Input Sensitivity is used to set the proper input voltage range:
X1 POSITION: 100mV–1V (Typically for RCA Input)
X10 POSITION: 1V–10V (Typically for Speaker Level Input)
