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AudioControl ACM-4.300

ACM Series compact 4-channel car amplifier — 50 watts RMS x 4

Item # 161ACM4300

Power makes good speakers sound great, but where to put an amp in your smaller vehicle? AudioControl comes to the...

Power makes good speakers sound great, but where to put an amp in your smaller vehicle? AudioControl comes to the...

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$329.99
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About the AudioControl ACM-4.300

Play your music loud and clear

Power makes good speakers sound great, but where to put an amp in your smaller vehicle? AudioControl comes to the rescue with their compact ACM-4.300 4-channel amp, which delivers 50 watts RMS per channel — perfect for two sets of speakers. This tiny, hand-size amplifier will fit almost anywhere in almost any kind of vehicle, improving the impact and clarity of your music. Even better, it features high-level inputs with signal-sensing turn-on, so it'll work with almost any stereo system, even one using a factory radio.

Play your music loud and clear

Power makes good speakers sound great, but where to put an amp in your smaller vehicle? AudioControl comes to the rescue with their compact ACM-4.300 4-channel amp, which delivers 50 watts RMS per channel — perfect for two sets of speakers. This tiny, hand-size amplifier will fit almost anywhere in almost any kind of vehicle, improving the impact and clarity of your music. Even better, it features high-level inputs with signal-sensing turn-on, so it'll work with almost any stereo system, even one using a factory radio.

Versatility and practical features

To simplify setup, a "Maximized" LED indicates when you've set the amplifier's gain for optimum performance. Like it loud? This amp can also operate in two-channel mode to power a pair of high-performance speakers with 150 watts RMS each.

AudioControl ACM-4.300

ACM-4.300 controls and connections

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Product highlights:

  • 4-channel car amplifier
  • 50 watts RMS x 4 at 4 ohms (75 watts RMS x 4 at 2 ohms)
  • 150 watts RMS x 2 bridged at 4 ohms
  • Class D amp technology
  • selectable high-pass filter (bypass, 80, 120 Hz at 12 dB/octave) on front and rear channels
  • subsonic filter: 32 Hz
  • preamp and speaker-level inputs
    • GTO™ (Great Turn On) signal-sensing turn-on with speaker-level input
  • fuse rating: 30A x 1
  • wiring and hardware not included with amplifier
    • 8-gauge power and ground leads recommended
  • dimensions: 9-1/2"W x 1-3/4"H x 3-1/2"D
  • warranty: 5 years
  • Our 60-day money-back guarantee
  • MFR # ACM-4.300

What's in the box:

  • Amplifier
  • 30A fuse (installed on amp)
  • Two 4-pin speaker input connectors (installed on amp)
  • Two 4-pin speaker output connectors (installed on amp)
  • Quick start guide

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AudioControl ACM-4.300 reviews

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Nice product

James from Chardon, OH on 8/31/2019

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Very happy with my purchase and AudioControl. Sounds great with the component speakers I chose.

Pros:

Cons:

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AudioControl ACM-4.300

Crutchfield customer from Okemos, MI on 5/20/2019

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I've run this for about 30 or 40 hours now and have a good idea of how it sounds. It sounds really good. Good soundstage, more wide than deep in my car. Excellent definition. Excellent dynamics. I would have taken off a star if it didn't sound so good because it does have some quirks. The GTO feature wasn't reliable, sometimes it worked and sometimes it didn't. I just ran a turn-on wire instead. The instructions are smart-ass flippant and don't actually provide the gain procedure. Fortunately I already knew it. It did not like my Kicker 44KSC6504 coaxial speakers, causing a harsh tweeter response. My Alpine amp in the exact same setup did not have this problem. It's now driving Sony XS-GS1621C component speakers in a different car and they sound excellent.

Pros: Excellent sound in my particular setup.

Cons: A little quirky, might not work for everyone. Smart-ass instructions.

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Sharp and defined sounds

Sabor from Montclair, NJ on 5/2/2019

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Super clean, crisp sounds. Mid-Bass sounds were as defined as my old amp, but the fidelity is cleaner and more defined. I have this powering my JL C3-600 speakers. Didn't know what those speakers could do until I replaced my 4 channel amp with this one. My C3s are setup as components. The amp is on a 8 guage cable with a 40 amp fuse. The amp is wire tied under my dashboard. The gains were adjusted using a DSO-213. I also have a DD1 but wanted to use the DSO. I compared the DD1 to the DSO and it was spot on when clipping.

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Excellent AudioControl product

Lawrence from San Angelo, TX on 2/18/2019

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I finally for this installed in my 2017 Honda Civic. It sounds well rounded. It has excellent sound for 300 watt amplifier. It has an excellent form factor that can fit almost anywhere in your vehicle. Audio Control makes some excellent products as I have used the LC line-output converter series. I think I should've bought the D-4.800 because I could've used one of the channels to bridge a subwoofer. Also, a con is that it doesn't have the remote out capability like the LC line-output products. That would've been great. Other than that, I am extremely satisfied with this product and extremely satisfied with Crutchfield and how they carefully ship their products. Thanks Crutchfield team!

Pros: Great sound from the mids to the highs. Small form factor that can fit almost anywhere.

Cons: No remote out feature like their line-output converters (I might be wrong)

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DO NOT UNDERESTIMATE THIS AMP

Don from Aliso Viejo, CA on 1/26/2019

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I had mine installed 3 days ago at a local shop here in Orange County, CA. I replaced a 1 month old Diamond Audio, Micro 84u which is rated 90X4. That amp was giving my sound system a very bright sound and does not give midbass. I asked this shop here and gave a suggestion to get this amp. I left my car all day and when I picked up, I was shocked how nice and clean sound this amp produces. I am very happy with the SQ. Nice midbass, and my tweeter became warmer. At its price I believe this is the best you can get. I am powering with this amp a Morel Virtus 602 for my front and Alpine Coax S Series at my rear. My head unit is a Pioneer 5200, i also have a DSP Audison Bit ten. I am also impreywith the power. Do not compare this with the cheap power pack like the junky Alpine KTP 445u. This amp is way more powerful than those power pack. This amp is LOUD, I also noticed that it is not getting very hot. I use mine averaging 6 hours a day because I work in the field. So far no Problems. Definitely a 5 star

Pros: Lots of power, very nice sound quality, midbass came out more, tweeter became warmer and more natural. Cant imagine a change of amp can change sound quality

Cons: None

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Product Research

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.

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.

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 @ 4Ω
  • 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.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Compact size, power output matched moderate speaker upgrade from stock. [ David  Jun 16, 2019 ]
A
I have too many wires running in my car. I have a line output converter and two amps. With this AudioControl amp, I can minimize wiring. [ SEYHA  Feb 09, 2019 ]

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