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US acoustics USX-4065
65W x 4 Car Amplifier
Item # 235USX406B | MFR # USX-4065B
This item is no longer available.
Our take on the US acoustics USX-4065
Great performance at a great price these are the benchmarks of a USX-4065 amplifier. Its four-channel design lets you send loads of power to all the speakers in your setup.
Front and rear crossovers (12 dB/octave high-pass and sharp 24 dB/octave low-pass) give you precise signal separation for ideal soundstaging, along with firm, tight bass. And preamp outputs with built-in crossovers simplify connections when you add more amps to your system.
- 2-, 3-, or 4-channel output
- Tri-way capable (Tri-Way crossover required)
- 80 watts x 4 at 2 ohms
- 160 watts x 2 in bridged mode
- requires 8-gauge power and ground leads wiring and hardware not included with amplifier
- variable high-pass crossovers (12-200 Hz, 12 dB/octave), front and rear channels
- variable low-pass crossovers (40-200 Hz low-pass, 24 dB/ octave), front and rear channels
- preamp outputs with crossover
- anti-thump circuit
- thermal, short-circuit, and power/ground reversal protection
- blue power light strip
- 3-year warranty
What's in the Box:
- Blue amplifier with chrome trim and two 20-amp blade fuses in chassis
- 1 Spare 20-amp blade fuse
- 4 Plastic isolation mounting feet
- 4 Self-tapping screws
- 4 Flat washers
- Warranty registration card with survey.
Features and Specs
|RMS Power Output (Watts x Channels)||
65 x 4
|Peak Power Output (Watts x Channels)||N/A|
|Power at 2 Ohms (Watts x Channels)||80 x 4|
|Bridged Power (Watts x Channels)||160 x 2|
|Minimum Impedance Bridged||4|
|Minimum Impedance Unbridged||2|
|Best Frequency Response||10-30k Hz|
|THD at Rated RMS Power||0.01%|
|Signal to Noise Ratio||100 dB|
|Low-Pass Crossover Frequency||40-200 Hz|
|Low-Pass Slope (dB/octave)||24 dB|
|High-Pass Crossover Frequency||12-200 Hz|
|High-Pass Slope (dB/octave)||12 dB|
|Bass Boost Frequency||N/A|
|Fuse Rating||20 x 2|
|Speaker Level Inputs||No|
|Preamp Outputs||1 pair|
|Parts Warranty||1 Year*|
|Labor Warranty||1 Year*|
Protection Circuitry: Reverse polarity, thermal and short circuit protection circuits are used to help protect the amplifier from damage and ensure reliable operation.
LED Condition Indicators: A green power LED and a red protection LED are use to report the amp's operating status.
Blue Light Strip: There is a blue light strip on the top of the amplifier. The light strip illuminates when the unit is on.
Lowpass Frequency Control: This controls the lowpass frequency for all of the channels set for lowpass operation using the mode buttons. It is variable from 40-200Hz with a 24 dB/octave slope.
Mode Buttons: There is one mode button for channels 1 + 2, and there is a separate mode button for channels 3 + 4. Each button may be set for lowpass or flat/highpass operation. When a full-range signal is desired for a pair of channels, the mode button for those channels should be set to the highpass/flat position, and the highpass frequency control should be set to "flat". When a mode button is in the highpass/flat position and the highpass frequency control is in the "flat" position, all frequencies above 12Hz are passed through to the speaker outputs.
Highpass Frequency Controls: There are two highpass frequency controls; one control is for channels 1 + 2, and the other control is for channels 3 + 4. The highpass frequency controls are continuously variable from flat (full-range) to 200Hz; the highpass crossovers have a 12dB/octave slope.
Level (gain) Controls: There are separate level controls for channels 1 + 2 and channels 3 + 4; the control settings are continuously variable from 110mV to 8.8V.
Selector Switch: The position of this switch determines the type of signals sent through the RCA line outputs. It may be set to "low", "1+2" or "3+4". When set to "low", the lowpass frequency control sets the lowpass crossover frequency for the line outputs. Setting the switch to "1+2" allows you to set the line output highpass frequency with the channel 1+2 highpass frequency control. Selecting "3+4" allows you to set the line output highpass frequency with the channel 3+4 highpass frequency control. Either highpass selector may be set to "flat" for full-range output.
+12V, Remote Turn- on and Ground Connections: gold-plated screw terminals; each terminal is 0.335" wide Speakers Outputs: gold-plated screw terminals (R- and L+ connections are used for bridged mode); each terminal is 0.335" wide Line In Connections: two stereo sets of gold-plated RCA jacks
- Line out Connections: two gold-plated RCA jacks
Best Frequency Response: 10Hz to 30kHz, -0.5dB.
Fuse Rating and Type: two 20 amp blade fuses
Channel Separation: 80 dB
Warranty: Amplifiers made before January 2001 carry a 1 year warranty. Units made during, and after, January 2001 carry a 3 year parts and labor warranty. All the units currently being sold by Crutchfield were manufactured after January 2001, so they are covered by the 3 year parts and labor warranty. The production date of each amplifier can be determined using the serial number; the first digit in the serial number indicates the year in which the amplifier was made. If the first digit in the serial number is "1", or higher, the amplifier carries a 3 year warranty; if the first digit in the serial number is a "0", the amplifier carries a 1 year warranty.
Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.