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CEA-2006 Compliant: CEA-2006 is a system of testing and
measurement methods for mobile audio amplifiers. This voluntary standard
advocates a uniform method for determining an amplifier's RMS power output and
signal-to-noise ratio. The criteria for measuring power uses a DC input voltage
of 14.4 volts and the RMS power output is measured into a 4-ohm load, with 1% or
less Total Harmonic Distortion plus noise (THD+N), and at a frequency range of 20
Hz to 20,000 Hz when applicable. Signal-to-Noise ratio is measured in weighted
absolute decibels (dBA) at a reference of 1 watt into 4-ohms. CEA-2006 allows
consumers to compare car amplifiers and receivers on an equal basis. The MTX
Road Thunder RT604 under CEA-2006 regulations is rated at 60 watts RMS x 4
channels with an 80 dBA signal to noise ratio.
2-Ohm Stable: The RT604 is capable of handling load impedances
down to 2-ohms in stereo; the amplifier is rated at 90 watts RMS x 4 channels into
2-ohms with no more than 1% THD+N.
Bridgeable: The front and rear sections of the amp are
independently bridgeable; the bridged output is 180 watts x 2 channels at
4-ohms (or 180 watts x 1 and 60 watts x 2 if only one half of the amp is
Protection Circuits: The RT604 provides Thermal and Short-circuit
Gain: The front and rear sections of the amp have independent
gain controls. Each rotary knob is continuously variable from 100 mV to 6 V.
Crossovers: The crossovers are also independent for the front
and rear amplifiers:
- Mode: front and rear 3 position
switches; High Pass, Low Pass, Full Range
- High Pass: front and rear rotary
controls; 40 Hz to 400 Hz
- Low Pass: front and rear rotary
controls; 40 Hz to 400 Hz
Power/Ground/Turn-On Connections: The RT604 features set-screw
terminals for the Power, Ground and Remote turn-on leads. The Power and Ground
terminals will accommodate up to 4 gauge wire, the Remote turn-on terminal will
accept up to 8 gauge wire.
Speaker Connections: The amplifier is equipped with four
set-screw speaker terminals. The terminals will accommodate up to 8 gauge speaker
Line Level Inputs: MTX recommends using the front and rear RCA
type line-level inputs if possible.
Speaker Level Input: Use the included front and rear speaker
level input harnesses if the connected radio has no preamp outputs.
Fuse: The amplifier is equipped with two ATO type 30 amp fuses;
they're located under a cap on the bottom panel.
5 Year Warranty Terms: This product carries a 5-Year
Prorated Warranty with the following terms:
- Years 1-2: Products found to be defective in materials
or workmanship during the first two years will be, at Mitek's option,
repaired or replaced by Mitek at no charge. The warranty period does not
renew, but continues on from the original date of purchase.
- Years 3-5: The purchase price of an item which becomes
defective after the first two years and prior to the end of the warranty
period will be prorated and credited toward the purchase of a new MTX
product. The amount of proration is determined by dividing the original
purchase price by the number of months in the warranty period (60), then
multiplying the result by the number of months remaining in the warranty