AudioControl ACM-4.300

Features

Overview: The AudioControl ACM-4.300 micro amplifier is a compact 4 channel amp that can output 50 watts RMS into a 4Ω load, 75 watts RMS into a 2Ω load, and 150 watts bridged into a 4Ω load. It includes both RCA line-level and speaker-level inputs, making it ideal for OEM integration, as well as AudioControl's GTO signal sensing turn-on circuitry.

Power Output: The ACM-4.300 has the following output:

• 50 watts RMS x 4 at 4Ω
• 75 watts RMS x 4 at 2Ω
• 150 watts RMS x 2 at 4Ω bridged

Crossovers: The ACM-4.300 includes two 12 dB/octave Linkwitz-Riley High pass filters, one for Channels 1 & 2 and one for Cannels 3 & 4. Both use a 3-position switch to change the crossover point with a choice of 80 Hz, 100 Hz, or Bypass. The amp also incorporates a built-in PFM subsonic crossover at 32 Hz.

Gain Maximized LEDs: Each pair of channels on the amp include their own Gain control to the properly set the input level. A Maximized LED indicator is provided for each that lights to let you know when the input signal has reached its optimum performance level, helping to avoid running a distorted signal through the amp.

GTO (Great Turn On) Signal Sense: If you are connecting the amplifier to a factory stereo, or an aftermarket unit without preamp outputs and a remote turn-on lead, the GTO Signal Sense circuitry can turn on the amplifier when an audio signal is detected on either the line-level or speaker-level inputs. After a period of time with no signal input, the amp will turn itself off.

Cover Plate: The ACM-4.300 amp includes a removable top plate that covers the controls and LED indicators. The cover is also reversible if  a "plain" look is desired.

Connections: The ACM-4.300's connections are aligned along the front of the amplifier for ease of installation. The amp's connections include:

• Fuse: One 30A ATO blade-type fuse is installed in the amplifier.
• Power: Set-screw terminals are provided for connecting +12V Power, Ground, and Remote In. The set screws can be tightened/loosened with a Phillips-head screwdriver (not included). The Power and Ground terminals will accept up to 4-gauge wire with 8-gauge power/ground recommended. The Remote In terminal accepts up to 10-gauge. A 30A fuse should be placed in-line on the power wire, no more than 18" from the battery.
• Line Level Inputs: Two pairs of RCA jacks are provided for connecting the amp to the source unit via RCA cables (sold separately).
• Speaker Level Input: Two removable Euroblock connectors are provided for connecting the source unit via speaker-level input. The speaker wires are inserted into the connector and tightened with a screwdriver (not supplied).
• Speaker Output: Two removable Euroblock connectors are provided for connecting speaker wire up to 12 gauge. The amplifier will accept a load impedance of 2Ω or higher, (4Ω if bridging). The speaker wires can be inserted into the connector and tightened with a screwdriver (not supplied).

Specifications:

• Preamp Inputs: 4
• Speaker Level Inputs: 4
• Preamp Input Voltage Range: 500mV - 6V RMS
• Continuous Output Power (14.4V):
  • 4Ω: 50W x 4 RMS
  • 2Ω: 75W x 4 RMS
  • Bridged 4Ω: 150W x 2 RMS
• Frequency Response: 10Hz - 22kHz
• Signal to Noise Ratio: 102 dBA, Ref 50W @ 4O
• THD+N: <0.01%
• Fuse Rating: 30A x 1
• Crossover: 12 dB/octave Linkwitz-Riley, 80Hz/120Hz/Bypass
• PFM Subsonic Filter: 32Hz
• Dimensions: Width: 9.44", Height: 1.70", Depth: 3.50"
• Weight: 1.3 lbs.