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AP4 D Amplifier | 520 W | 4 x 130 W @ 2 ohm | D-class Fully Bridgeable

The AP4 D amplifier was designed as an extension for the AP 4.9 bit and AP 5.9 bit amplifiers, offering 4 additional 70 W amplified channels.

Amplifier Tech Data

Channels 4
Class D-Class
Hi Level Input Yes
Low Level Input Yes
Digital Input No
Power supply voltage / fuse 7.5 ÷ 15 VDC
Idling current 1 A
Idling current when off 0.05 mA
Consumption @ 14.4 VDC, 2Ω, Max Musical Power 27 A
Remote IN 7 ÷ 15 VDC (1 mA)

Amplifier Stage

Distortion - THD @ 100 Hz, 4Ω, 70% Rated Power 0.1%
Bandwidth A (-3 dB, 2 VRMS, 4 Ω): 10 ÷ 30k Hz
S/N ratio A (A weighted @ 1 V): 100 dBA
Damping factor A (1 kHz, 2 VRMS, 4 Ω): 170
Input sensitivity Pre-In Selectable: 1,5 - 3 - 4,5 V RMS
Pre In Impedance 15k Ω
Input sensitivity Speaker-In Selectable: 3 - 6 - 9 V RMS
Input impedance Speaker-In Wired
Total Power RMS 520 W
Minimum load impedance • 4 Ch: 1-2-3-4 2Ω
• 2 Ch: Bridge (1-2) (3-4) 4Ω
Output Power (RMS) @14.4 VDC, 1% THD • 4 Ch @ 4Ω: 70 W x 4

• 4 Ch @ 2Ω: 130 W x 4

• 2 Ch - (Bridge 1/2; 3/4) @ 4 W 260 W x 2
Output Power (RMS) @14.4 VDC, 10% THD • 4 Ch @ 4Ω: 90 W x 4
• 4 Ch @ 2Ω: 180 W x 4
• 2 Ch - (Bridge 1/2; 3/4) @ 4 W 360 W x 2
Adjustable Crossover No

CEA Specifications

Output power @ 4Ω, 1% THD+N, 14.4 V 70 W x 4
SN ratio (ref. 1W output) 85 dBA

Inputs

Input Type PRE IN RCA
Filter Pass A MUTE (Energy Saving Control) wired from AP4.9 bit / AP5.9 bit
Filter Pass B Ambient operating temperature range: 0 °C to 55 °C (32°F to 131°F)

Other

Fuse 30 A
Weight 1.33 kg

Features

  • 4 x 130 W @ 2 ohm
  • D-class Fully Bridgeable
  • Designed as an extension for the AP 4.9 bit and AP 5.9 bit

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