Amplifier AudioControl ACM-4.300
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Amplifier AudioControl ACM-4.300
With OEM integration-friendly features such as signal summing and the patented AccuBASS® function, AudioControl multi-channel and subwoofer amplifiers are the ideal solution for integration into a factory audio system, offering flexible and user-friendly signal routing and control. Spend less time installing and more time listening to the music as the artist intended. AudioControl's ACM series amplifiers are the perfect combination of performance, quality sound and plenty of useful features that you need for your audio system. Compact size, high performance and the ability to conveniently integrate onto factory stereo systems are features that ensure AudioControl's brand slogan "Making Good Sound Great" can work in any installation. Double-sided cover plates allow flexible mounting options when paired with AudioControl DM series processors or when using multiple ACM series amplifiers in tight spaces. AudioControl comes to the rescue again, combining the functions and benefits needed to ensure audio euphoria in the automotive environment.
Main features of the AudioControl ACM-4.300 amplifier
- 4-channel class D amplifier with miniature dimensions.
- Power: 4 x 50 / 2 x 150 W RMS (4 Ω), 4 x 75 W RMS (2 Ω).
- Inputs: 4 x RCA (500 mV - 6 Vrms), 4 x Hi-level (3 V - 40 Vrms).
- GTO™ signal acquisition, AccuBASS®.
- Independent Linkwitz-Riley crossovers.
- Active speaker level inputs (4 channels) for OEM integration.
- PFM Subsonic Filter, High Bandpass Filter (HPF).
- Durable one-piece aluminum chassis.
About the AudioControl brand
As the name suggests, AudioControl has been all about sound control for more than 40 years. Especially in the United States of America, AudioControl is one of the respected and very popular manufacturers not only of sound systems for vehicles, but also for homes. The company's headquarters, including research, development, manufacturing and training facilities, thrive in Mountlake Terrace, Washington, in the heart of the Pacific Northwest rainforest. All products are therefore still designed and proudly manufactured in the USA, which guarantees their high quality and reliability. This is evidenced by the five-year guarantee that AudioControl provides for its products. AudioControl engineers are responsible for several patented technologies that have created a new way to improve sound in the automotive environment. And that's exactly what AudioControl focuses on. The range is quite narrow, specializing in high-end digital amplifiers, DSP processors, equalizers, preamplifiers and, above all, a range of products for the implementation of a new sound system on existing factory units. Professional measuring tools are also available, which help to fulfill the main goal of the AudioControl company, which perfectly describes their slogan "Making good sound great".
| Catalog number | ACM-4.300 |
| Brand | Audio control |
| Links | Official web presentation (English) |
| Number of amplifier channelsAmplifiers are divided into: - Monoblocks - 2-channel - 3-channel - 4-channel - 5-channel - 6-channel - multi-channel Each channel is used to power one speaker for the coaxial type, or one side if they are component speakers. Monoblock type amplifiers are mainly used for subwoofers. 2-channel are suitable for both subwoofers and, for example, the front pair of speakers in a car. 3-channel is used for front or rear speakers + subwoofer. 4-channel are used for front + rear speakers or 1 pair of speakers + subwoofer. 6 or 5-channel are used for 2 pairs of speakers + subwoofer, most often. Bridging means connecting the amplifier to a bridge, using the + pole from one channel and the - pole from the other channel. In most cases this is shown as "BRIDGED" on the amplifier. | 4 |
| Energy class of the amplifierAmplifiers are divided into two basic classes: analog and digital . Analog amplifiers (A/B) have higher consumption requirements, but usually have a more natural sound. Digital amplifiers (D) have significantly lower consumption and higher efficiency, but the sound may not be as faithful as with classic analog amplifiers. | D |
| RMS power into 4 ΩRMS power when loading speakers or subwoofer at 4 Ω. RMS power is the constant power of the amplifier and is one of the most important parameters when choosing an amplifier. | 4 x 50 / 2 x 150 W |
| RMS power into 2 ΩRMS power when loading speakers or subwoofer at 2 Ω. RMS power is the constant power of the amplifier and is one of the most important parameters when choosing an amplifier. | 4 x 75W |
| High pass filter (HPF)HPF / HP or The "hi pass filter" offers the option of setting the amplifier using a potentiometer so that medium, possibly mid-bass and treble frequencies play upwards from a certain frequency. Example: Amplifiers most often have an HPF from 40 to 300 Hz. If we set the potentiometer to a value of approx. 150 Hz, the sound will be clipped so that it plays frequencies from 150 Hz up to the maximum upper limit of the entire frequency range of the amplifier, perhaps up to 20,000 Hz. We recommend setting this potentiometer in the range of 80-160 Hz. Thanks to this setting option, the speakers can handle a higher performance, as you will not overload them with bass in the lower frequency range. | 80 / 120 Hz |
| Frequency rangeThe ability of the amplifier to reproduce the signal from the lowest frequency to the highest = faithfully reproduce the sound in a specific frequency band. Professionally: In the frequency range from 40 to 16,000 Hz, the vast majority of fundamental and overtones (harmonics) of all musical instruments are found. We are interested in the course of the radiated sound pressure in this range of frequencies when the loudspeaker system is supplied with constant power. We call this course the frequency characteristic, which tells us the level of radiated sound pressure in decibels (dB) depending on the frequency. The frequency characteristic of a speaker or speaker system can be expressed most succinctly with a graph. Mostly, however, the frequency characteristic is indicated by indicating the maximum tolerance of the sound pressure in the given frequency range, e.g. 50 to 15,000 Hz -+ 6 dB. Since the frequency characteristics of loudspeakers and systems in general are quite uneven, some manufacturers do not even specify this maximum tolerance of sound pressure in decibels in their catalogs for reasons of prestige. Data impoverished in this way is unfortunately worthless. What is valid is that the manufacturer offers a speaker system with a frequency range of 30 to 20,000 Hz, if he is worried about stating the maximum unevenness of the sound pressure in this range, because he can have a tolerance of, for example, +- 20 dB. The unevenness or undulation of the frequency curve in good speaker systems for high-quality music performance should not exceed +-3 dB in the 80 to 12,000 Hz band and +-6 dB in the 40 to 16,000 Hz band. Greater unevenness already depletes or emphasizes certain tonal areas, which can cause audible or even disturbing distortion. The proportion between fundamental tones and higher harmonics also changes, thereby changing the color of the sound, and individual musical instruments as well as the entire musical image sound unnatural. | 10 - 22000 Hz |
| Harmonic Distortion (THD)Total harmonic distortion indicates how much the input signal is distorted in the amplifier. Distortions appear as overtones contained in the output signal. The proportion of originally absent parts of the signal is given as a percentage, typical values are between 0.001% and 0.5%. Distortion is measured in their power band. If it exceeds the limit of 0.7% from a certain power, it is the value of the output power of the given amplifier, from which it no longer plays without distortion and from which the distortion usually increases steeply, so that no further increase in power can be counted on. The lower the value, the better. | < 0.1% |
| Signal-to-noise ratioThe signal-to-noise ratio means that the output signal always contains noise. The signal-to-noise ratio expresses how much of this noise is compared to the useful signal. The so-called A value is given, which does not take deep and very high frequencies into account. This corresponds to the characteristic of human hearing, which is not so sensitive to deep frequencies, especially below 1 kHz. The higher the value, the better the amplifier is. | 102 dB |
| High level inputsThe high-level input on the amplifier allows connection directly to the existing speakers in the car without additional purchase of an external high/low adapter. Important equipment in the case of installing an amplifier on an original car radio. | Yes |
| Automatic on and offThis function allows you to automatically switch on the amplifier. | Yes |
| Socket input terminalsFerrule terminals allow better wiring contact to the amplifier. It is also a more secure form of terminals. If you are tightening the sleeve terminals, we recommend retightening them after 1 day, as the connected cable gradually compresses. | Yes |
| Remote control included in the packageSome models of amplifiers also come with wired remote controls in the package, which on one side plug into the amplifier and on the other side you have a potentiometer that you can place anywhere in the cabin. A common place to place the remote control is under the steering wheel. The advantage is the regulation of power, and therefore volume, depending on driving conditions and the mood of the crew in the car. | No |
| Input for wired remote controlIf the amplifier has a remote control input. | No |
| The value of the fuses on the amplifierFrom the value of the fuses on the amplifier, you can get a true picture of the real performance of the amplifier. | 1 x 30 A |
| Dimensions of the amplifier | 238 x 76 x 44 mm |
| Mass | 0.98 Kg |