2 channel car amplifier

The most popular car amplifiers are the amplifiers of the MMA Company.

Amplifiers of this company consistently occupy the top places in our tests, regardless of class. But there is a special article in the program of the firm; they are extremely powerful models, designed primarily for bass reproduction. Engineers managed to develop amplifiers with a unique efficiency of 92%. That is, for every 100W of power consumption the amplifiers give 92Vt of useful sound. The most prominent representative of this galaxy is a dual “MMA 500.2”, which we would like to present to you.

Those who are familiar with an assortment of this company, the design of the amplifier may be confusing. It is known that the amplifiers of "MMA" were previously different by a top cover made of transparent Plexiglas, and this design of a powerful cast body radiator with a longitudinal chrome strip was closer to other corporate series, for example, «BST». And it's still a two-channel amplifier of "MMA", but it’s unusual. We do not recall a single case when the two-channel amplifier of Class-D was executed under the scheme «Dual Mono». Even the power connectors are duplicated here. The plus of this inclusion is obvious. Let’s note that when working with such facilities on a low-resistance load there are huge currents, requiring the use of heavy gauge wires, so the amplifier power connectors have a diameter of 12mm.
Built-in crossover with LPF and LIPF defines the kind of an amplifier – maybe it only increases the bass, the inclusion of other schemes can not be build on their basis. Also, the two-channel subwoofer model is a rarity, but based on the growing popularity of LF-heads, and even four-voice coils, in the nearest future their park has to grow too.

The sound deserves the highest praise. The bass has a great depth, speed and completeness. Clean and natural tone, coupled with excellent dynamics and micro dynamics allows us to recommend “MMA 500.2” to all audiophiles, regardless of genre preferences. The main thing is to match the level of the subwoofer and the amplifier.
Car Amplifier of Adagio MMA500.2, CarMusic, 2003

Line coupling of dual amplifier:
1. LINE OUT - RCA connector of line output for additional amplifier
2. LINE INPUT - RCA connectors of line input of the amplifier
3. REMOTE - connector for remote control of input level of a signal
4. SUBSONIC FILTER - control of the lower cutoff frequency of the band filter
5. LOW PASS - control of the upper cutoff frequency of the band filter
6. BASS EQ – control of the boost of LF signal
7. LEVEL – control of the level of input signal
8. PROTECTION - (red LED) – It lights when there is automatic shutdown of the amplifier from overheating, or short-circuit of amplifier outputs.
9. POWER (blue LED) – indicator of the input of an amplifier
10. POWER INPUT - terminals for power on of an amplifier
11. SPEAKER OUTPUT - terminals of the output of an amplifier for the subwoofer
12. REMOTE CONTROL - Remote control of the boost of LF signal