Feature Setup and Adjustments

Note: When numerous ampliﬁers are used in the same system, look into using a relay with a separate power wire connected to an alternative power source to take the strain off the source unit. Normal source units can only keep a constant 12 volts to 2 or possibly 3 amps. This wire should also be run on the away from the RCA cables.

•CAP+: This 8 gauge terminal is internally wired in parallel with the +12V on the StreetWires Power connector. It is the ideal connection point for the positive side of a capacitor to increase the ampliﬁer’s performance.

•CAP-: This 8 gauge terminal is internally wired in parallel with the GND on the StreetWires Power

connector. It is the ideal connection point for the negative side of the capacitor to increase the ampliﬁer’s performance.

Double check all the previous connection installation steps, in particular the speaker and power wiring. Securely mount the ampliﬁer. If everything is in order, reconnect the vehicle’s negative battery connection and begin following the feature setup and adjustment steps.

1.Selecting the Input Sensitivity Range – Before you turn on your system, you must select the proper input sensitivity range on your amp using the button labeled INPUT SENS located in the GAIN CONTROL section of the control panel.

•Setting for Aftermarket Source Units: Refer to your aftermarket owner’s manual for line level output speciﬁcation. If the speciﬁcation is not available, please follow the instructions listed below.

X1 POSITION: 100mV–1V (Typically for RCA Input)

•Setting for Factory (OEM) Source Units: To check the amount of voltage that is present from the source unit, take a multi meter, or a volt/ohm meter, on the AC setting, (range from 100mV up to 10 volts) attach the positive and negative leads directly to any exposed speaker. It will not matter if the polarity is correct, it will read the same amount of voltage.

X10 POSITION: 1V–10V (Typically for Speaker Level Input)

Note: It is important not to have the amp set up to receive a low voltage signal and give it a high voltage signal. Doing this can cause damage to the amp.

2.Adjusting the Gain Control – Before you start setting your amp gains, be sure to defeat all EQs (“off” position). You want to set the gain levels properly BEFORE applying any equalization.

Start with the source unit’s volume around ¾ of the way up, and the gain on the amp all the way down (counter-clockwise). Slowly increase the gain clockwise until the speaker starts to distort. Immediately decrease gain until the distortion goes away. This will be a good reference point on the volume control to where the signal starts to distort. Remember every CD will be different; use common sense and constantly listen for obvious distortion and adjust volume accordingly. The gain on the amp has nothing to do with how much power the amp can produce, just how fast the amp puts out max power. Just like in an automobile, full throttle is very rarely needed.

3.Adjusting the Low, 24dB @ 40Hz - 200Hz Variable Low Pass X-over Frequency Controls–

• Setting for Subwoofers: Using “L-PASS CROSSOVER” you have control over what frequency you want your amp to start crossing over your signal. By turning this control all the way counter-clockwise you are crossing the signal over at 40Hz (the range is counter-clockwise 40Hz to clockwise 200Hz). This means that the amp will send the woofers frequencies from 20Hz to 40Hz and then start to taper down as the frequencies go over 40Hz (24dB/octave roll off). The industry standard for low pass crossover point is right around 90Hz. However by experimenting with the crossover point (higher or lower) you will ﬁnd what sounds best in this install. The decibel per octave roll off (dB/oct) means how fast the ampliﬁer tapers down as the frequencies get higher. This amp uses a 24-decibel per octave roll off, which is pretty steep, or tapers off fairly quickly from the crossover point. This design complements both the subwoofer and the mid to provide greater musical detail.

4.Adjusting The Variable ThunderEQ – Adjust the dial clockwise to add the desired amount of bass boost. Keep in mind that there is a lot of boost available, 18dB of 40Hz, but begin with a low boost setting (around 3dB) and try to stay below 6dB whenever possible. Remember that for every 3dB of additional boost you dial in, you are asking the ampliﬁer to double its power output for this boost region.

TA4501 specifications

The MTX Audio TA4501 is an impressive monoblock amplifier that showcases the brand's commitment to delivering exceptional audio performance. Designed for car audio enthusiasts, the TA4501 is a perfect addition to any sound system, providing robust power and versatility. With a maximum output of 450 watts RMS at 1 ohm, the amplifier ensures that your subwoofers receive the necessary power to produce deep, thumping bass that can be felt throughout any vehicle.

One of the standout features of the TA4501 is its Class D technology, which enhances efficiency while reducing heat output. This design allows for high power output without the need for extensive cooling systems, making it an ideal choice for compact installations. As a result, users can enjoy prolonged periods of high-performance audio without worrying about overheating or system damage.

The TA4501 also includes a variable low-pass filter, allowing users to control the frequency range of the signal sent to their subwoofers. This customization enables a tailored listening experience, optimizing the sound output for any genre of music. Additionally, the bass boost feature further enhances the low-end frequencies, providing an extra punch that can be critical for those looking to amp up the bass presence in their audio setup.

For ease of installation, the MTX Audio TA4501 comes equipped with high-level inputs, enabling users to connect the amplifier to factory-installed head units without requiring external line converters. This capability simplifies the setup process, making it accessible to a wider range of users, from experienced car audio installers to novice enthusiasts.

Moreover, the TA4501 boasts a compact form factor, which not only conserves space but also ensures that it can be discreetly mounted in various locations within a vehicle. The amplifier's durable construction and finished look guarantee that it can withstand the rigors of car environments while maintaining its aesthetic appeal.

Overall, the MTX Audio TA4501 combines power, efficiency, and flexibility, making it a preferred choice for those seeking to elevate their car audio systems. With its range of features and impressive performance capabilities, the TA4501 is designed to deliver an exceptional listening experience that caters to the demands of every music lover. Whether you're a casual listener or a dedicated audiophile, this amplifier will not disappoint in delivering top-notch sound quality.