1. Power LED (Top of unit - Not Shown) – This Blue LED illuminates when the unit is turned on.
2. Thermal LED (Top of unit - Not Shown) – This Red LED illuminates if the amplifier reaches the
third stage of thermal protection.The amplifier will shut down to cool if this occurs.
3. Protect LED (Top of unit - Not Shown) – This Yellow LED illuminates if a short circuit or too low of
an impedance is detected at the speaker connections.The amplifier will automatically shut down if this
occurs.
4. Cast Aluminum Heatsink – The cast aluminum heatsink of the Power amplifier dissipates heat
generated by the amplifier's circuitry.
5. Speaker Terminals – The heavy duty, nickel-plated clamp wire connectors (
+
and -) will accept wire
sizes from 8 AWG to 18 AWG.
6. Remote Bass – The Para-Punch Remote Bass connection is made with a RJ-45 cable and can be installed
in a variety of ways for easy control access. One control is used to boost low frequency information to
overcome road noise and put the bass in your face.This Bass control is a narrow band adjustment
variable from 0dB to +18dB with a Gyrator based Punch EQ that eliminates frequency shift with boost.
The other control is used for adjusting center frequency variable from 35Hz to 70Hz.
7. Gain Control – The input gain control is preset to match the output of most source units. It can be
adjusted to match output levels from a variety of source units.
8. Variable Crossover – Is a built-in 12dB/octave Butterworth filter selectable for High-Pass (HP),All Pass
(AP), or Low-Pass (LP) operation variable from 40Hz to 400Hz.
9. RCA Input Jacks – The industry standard RCA jacks provide an easy connection for signal level input.
They are nickel-plated to resist the signal degradation caused by corrosion.
10. RCA Active Pass-Thru Jacks – This Active Pass-Thru provides a convenient source for daisy-chaining
an additional amplifier without running an extra set of RCA cables from the front of the vehicle to the
rear amplifier location.
11. REM Terminal – The heavy duty, nickel-plated captive c-clamp wire connector will accept wire sizes
from 12 AWG to 24 AWG.This terminal is used to remotely turn-on and turn-off the amplifier when
+12V DC is applied.
12. Power Terminals – The power and ground are nickel-plated captive c-clamp wire connectors and will
accommodate up to 4 AWG wire.
13. Fuses – These ATC fuses are easily accessible in case of failure.Always replace fuses with same type and
rating. See Specifications for fuse ratings.
14. 2/4 Channel Switch (T4004 only) – Pressing this switch in, switches the inputs to a 2-channel
mode, allowing connection to only the front inputs with a 4-channel output.
4
DESIGN FEATURES
