Amplifier Zapco ST-1500XM III - used goods

Name: Amplifier Zapco ST-1500XM III - used goods
Brand: Zapco
Price: 499.00 EUR
Availability: InStock

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1-channel amplifier, 1 x 800 / 1150 / 1600 W RMS (4 / 2 / 1 Ω), class D
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Amplifier Zapco ST-1500XM III - used goods

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Zapco ST-1500XM III Amplifier

The Studio-X amplifier series from Zapco was designed specifically for today's car audio market. The compact Studio-X chassis allows easy installation into any car and with its modern angular design your sound system will look as good as it sounds. And speaking of sound... these are Zapco amplifiers, where sound quality always comes first. Durability and reliability are also among the main advantages. It's not unusual to see Zapco amplifiers moved from car to car and from generation to generation. Zapco amplifiers made in the 1990s are still traded and bought online by sound-quality enthusiasts worldwide. Studio-X amplifiers are no different — they are designed to last for decades.

Zapco Studio-XM digital monoblocks

In 2022 Zapco introduced updated class D amplifiers in its third generation. The amplifier chassis has been completely refreshed, replacing the black finish with brushed aluminum, and several internal component changes were made to elevate sound quality another step. Bass is only a part of most musical tracks, but it sets the standard for any quality sound system. In the Studio-XM range Zapco presents four class D monoblocks from 500 W RMS to 2,000 W RMS. And if that's not enough, all Studio-XM amplifiers can be connected to a single voice coil, so you can always double the power by purchasing another amplifier of the same model. All ST-XM class D bass amplifiers are stable down to 1 Ω, as needed on today's market. We also see a strong demand for providing power into a 2 Ω load in mid-power ranges for all sound-quality fanatics. A 2 Ω load uses current more efficiently and is better for sound quality. With RMS powers of 500 W, 1,000 W, 1,500 W and 2,000 W and the ability to link units together, the ST-XM amplifiers cover almost any user's need.

Main features of the Zapco ST-1500XM III amplifier

1-channel class D amplifier.
Power: 1 x 800 / 1150 / 1600 W RMS (4 / 2 / 1 Ω).
Ability to link 2 amplifiers for higher output.
Variable input sensitivity from 200 mV to over 5 volts.
Low-pass control from 40 to 180 Hz.
Bass level adjustment from 0 dB to 12 dB.
Bass frequency control from 30 Hz to 80 Hz.
Variable subwoofer phase control from 0° to 180°.
Socket-style input terminals.
Remote control included in the package.

About Zapco amplifiers

Zapco is the oldest high-end car audio brand in the world, specializing in top-tier amplifiers and DSP processors for cars. The company was founded in the USA in 1974 and has been collecting awards ever since — both from prestigious organizations evaluating product quality and innovation and at global competitions focused primarily on sound quality. Zapco amplifiers deliver audiophile quality without compromise, define the standard of quality and set the criteria by which other products in this field are judged. For over 45 years Zapco has continuously sought innovative ways to bring better sound into the automotive environment, and this relentless pursuit of absolute sound quality keeps bringing new technologies and high-end products. Why? Because nothing else can grab the soul and bring tears to the eyes like music. Thanks to music you can dance for joy... of all art forms, music has the strongest and most immediate effect on your body and mind. Reproducing music in all its beauty and subtlety deserves nothing less than the greatest effort of all Zapco employees. And also because music matters!

Catalog number	ST-1500XM III-P1
Brand	Zapco
Links	Official web presentation (English)
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
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.	1
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.	1 x 800 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.	1 x 1150 W
RMS power into 1 ΩRMS power when the subwoofer is loaded at 1 Ω. RMS power is the constant power of the amplifier and is one of the most important parameters when choosing an amplifier. When connected to 1 Ω, significant heating of the amplifier may occur.	1 x 1600 W
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 - 200 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.	< 0.2 %
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.	> 85 dB
Input sensitivityIn order for the amplifier to perform its function correctly, it requires an input signal of a certain level, which is different for car radios. It is measured in "Volts" (e.g. 2 V, 4 V, etc.) The higher the value at the output of the pre-amplifier, or car radio, the less demands are placed on the power of the amplifier. However, the amplifier must allow this input sensitivity, and for that reason this value is also given for the amplifier.	0.25 - 5 V
Low-pass filter (LPF)LPF / LP or "low pass filter" offers the possibility to adjust the amplifier using a potentiometer so that the lower band plays only the frequencies in a certain band that you need. This filter is used to adjust the frequency range for the subwoofer, so that it does not overload or distort the sound. Example: Amplifiers most often have an LPF from 20 to 300 Hz. We recommend setting this potentiometer in the range of 45-80 Hz.	40 - 180 Hz
SubsonicA subsonic filter is essentially a high-pass filter for very low frequencies, typically 45 Hz or lower. Anything below this setting is weakened. The point is that the subwoofer does not go below the subsonic filter setting and does not overload itself with very low frequencies. A useful function, if set correctly, the subwoofer is not overloaded.	17 - 50 Hz
Bass boostBass boost or bass enhancement. With this function, the bass itself can be emphasized, at a high level of bass boost, the speakers and the subwoofer can distort a lot and the sound will be worse than better. We therefore recommend using the "bass boost" function wisely. With maximum use of bass boost, there is a risk of damage to the speakers and thus to the subwoofer.	0 - 12 dB
Phase shiftPhase shift is a linear electronic oscillator that produces a sinusoidal output. It consists of an inverting part of the amplifier such as a transistor. The feedback network "shifts" the phase at the output of the amplifier by 180 degrees to the oscillation frequency and gives positive feedback. The Phase shift filter produces a phase shift that increases with increasing frequency. This is usually used when the subwoofer sub-assembly is out with the magnet, or when two amplifiers are connected externally. Phase Shift is also used with active speaker wiring, where the time shift of the speakers is set. The point is that the subwoofer does not play the bass late, and for this reason better amplifiers offer this phase reversal option.	Yes
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
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.	Yes
Dimensions of the amplifier	160 x 58 x 375 mm