Products | METROPOL Car Audio System

AF companion amplifiers are designed to add powerful amplifier channels to AF bit processor amplifiers. A plug-and-play signal input harness is included to make connection to AF bit amplifiers straightforward. AF companion amplifiers are also perfect for use with systems controlled and managed by a standalone bit processor, such as a bit One HD Virtuoso. AF companions have a “straight wire” architecture, without analog preamp functions such as crossover filtering, and are intended for use with external processors. AF M4D boasts four high-fidelity amplified channels 90W x 4 @4Ω*, 150W x 4 @2Ω* with the audiophile sound of the latest generation Audison D-Class technology. Higher switching frequencies, steeper filtering, and higher-tolerance components deliver sound above and beyond the expectation of Class D – in an amazingly compact package! The audio band is extended up to 40 kHz earning the coveted High-Resolution certification. Bridging channel pairs results in 300W x 2 @4Ω*, guaranteeing flexible and powerful performance. *Output Continuous Power (RMS) @14.4 VDC, 1% THD, all channels driven.

FEATURES

• Improved audio performance and power thanks to the latest generation of ADT (Audison D-Class) technology
• Unbeatable power/volume ratio up to 0.47 W RMS/cm³ reaching 81% of efficiency
• Hi-Res compatibility performance, with an extended audio band up to 40 kHz
• Maximum versatility thanks to the possibility of using the bridging option for each pair of power outputs

AMPLIFIER TECH DATA

Channels 4
Class D-Class
Efficiency 84%
Hi Level Input Yes
Low Level Input Yes
Digital Input No
Power supply voltage / fuse 11 ÷ 15 VDC
Operating power supply voltage 6.5 ÷ 17.5 VDC
Idling current 0.004 A
Idling current when off 0.6 mA
Consumption @ 14.4 VDC, 2Ω, Max Musical Power 25 A
Remote OUT 6.5 ÷15 VDC (150 mA)
Remote IN 4 ÷15 VDC (1 mA)
ART - Automatic Remote Turn on/off from OUTPUT BTL speakers (Selectable) 1.5 VDC

AMPLIFIER STAGE

Distortion - THD @ 100 Hz, 4Ω, 70% Rated Power 0,03%
Bandwidth A (-3 dB, 2 VRMS, 4 Ω): 10Hz ÷ 40kHz
S/N ratio A (A weighted @ 1 V): 102 dBA
Damping factor A (1 kHz, 4Ω, 2 VRMS): 95
Input sensitivity Pre-In 0.6 ÷ 6 VRMS
Input sensitivity Speaker-In 2.2 ÷ 22 VRMS
Total Power RMS 600 W
Minimum load impedance 2Ω:
Output Power (RMS) @12.0 ÷ 14.4 VDC, 1% THD 4Ch @ 4Ω: 90 W x 4
4Ch @ 2Ω: 150 W x 4
2Ch (bridge) @ 4Ω: 300 W x 2
Adjustable Crossover No

CEA SPECIFICATIONS

Output power @ 4Ω, 1% THD+N, 14.4 V 90 W x 4
SN ratio (ref. 1W output) 81 dBA

INPUTS

Remote Sub Volume ±12 dB

OTHER

Fuse 1 x 30 A
Weight 1.49 kg

Dimension A 200 mm
Dimension B 47 mm
Dimension C 134 mm

Documents

PDF Technıcal Sheet