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Profile California 640sx 75 watts RMS x 4 Amplifier

Item # 489640SX

Profile California Series amps rule in the watts-per-buck competition!

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Profile California Series amps rule in the watts-per-buck competition!

Item # 489640SX

Shop all Profile Car Amplifiers

About the Profile California 640sx

Profile California Series amps rule in the watts-per-buck competition! The 640sx multichannel amplifier comes with built-in variable low- and high-pass crossovers, individually-selectable front and rear — so you can get the most out of your vehicle's speaker system.

Was: $209.95
Now: $199.95
You save $10!

Profile California Series amps rule in the watts-per-buck competition! The 640sx multichannel amplifier comes with built-in variable low- and high-pass crossovers, individually-selectable front and rear — so you can get the most out of your vehicle's speaker system.

The 640sx features set-screw terminals for power, ground, turn-on, and speaker outputs for easy, secure connections. Crank up your low-end impact with a variable 0-12 dB bass boost at 45 Hz. And the way-cool, illuminated power strip still glows red! Profile provides a 2-year warranty for Crutchfield customers.

Details:
  • 2-, 3-, 4-channel or Tri-Way output
  • 225 watts x 2 in bridged (2-channel) mode
  • 110 watts x 4 into 2 ohms
  • requires 4-gauge power and ground leads — wiring and hardware not included with amplifier
  • two 30-amp fuses
  • continuously-variable high-pass and low-pass crossovers (40-130 Hz at 12 dB per octave)
  • 2-ohm stable in stereo
  • gold-plated high-current cable inputs for maximum current transfer
  • continuously-variable (0-12 dB) bass boost at 45 Hz
  • 105 dB signal-to-noise ratio
  • 13-3/4"W x 2-3/8"H x 9-13/16"D
  • 2-year warranty

What's in the box:

  • Blue amplifier with silver trim/dark blue and red graphics/six segment LED power light; 2- 25 amp blade fuse in chassis; 1 spare 25 amp blade fuse; Allen wrench; 4 self tapping screws and washers for mounting; Instruction manual; Package of Silica-Gel
MFR #640SX

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More details on the Profile California 640sx

Mark G.

Product Research

Controls
Inputs/Outputs
Special Features
Specifications

Controls

Gain controls: Variable gain controls (one for front and one for rear channels )

Filter switches:  Allows you to select low pass, off (full range) or high pass.  The slope is 12dB per octave. One for front and one for rear channels.

X-over frequency controls: Variable adjustment knobs allows you to select a crossover point of 40Hz - 130 Hz for either the low pass or high pass crossover. One for front and one for rear channels.

Bass Boost: Variable adjustment knobs allows you to select a bass boost of 0dB to 12dB (centered at 45 Hz). One for front and one for rear channels.

Inputs/Outputs

Preamp inputs: Gold plated left and right stereo RCA for channels 1/2 and channels 3/4. If your source unit has only one set of preamp outputs you must use RCA "Y" adapters

There is a gold plated set screw terminal for power, remote and ground. This will accept wire up to 8 gauge.

There is a gold plated set screw terminals for speaker output (L+/L-/R+/R-). It will accept wire up to 8 gauge. In order to bridge the amplifier use the L+/R- speaker outputs; one for CH1/2 and one for CH3/4.

Special Features

Power strip: There is a six segment LED that lights up when power is turned on.

Three way protection: This protection consists of DC, short circuit and thermal protection.

Power supply: The amplifier utilizes a Mosfet power supply.

Specifications

Improved S/N Ratio: The original version of this amplifier had a signal-to-noise ratio of 95dB. A running change in the design of the amplifier has improved the S/N ratio to 105dB. The running change was made late in 1999, and the amplifiers with the improved S/N ratio began shipping soon afterwards. 

More specifications:

  • Supply Voltage: 10.5-15 volts
  • Channel separation: 85dB
  • Idle current draw: 430-870 mA
  • Maximum output: 100 watts x 4
  • RMS output at 4 ohms: 75 watts x 4
  • RMS output at 2 ohms: 110 watts x 4
  • Bridged output : 225 x 2 at 4 ohms

Note that the minimum impedance allowed is 2 ohms in stereo mode and 4 ohms bridged.

Warranty: on this amplifier is one year parts and labor. Profile will extend the warranty to two years parts and labor if the unit is purchased from Crutchfield!

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