Bosch PRM-4P600-US 4-Channel 600W Power Amplifier

Bosch PRM-4P600-US 4-Channel 600W Power Amplifier

The PRM-4P600 is a 600 W power amplifier with powerTANK technology that flexibly delivers the total power over its 4 channels.

powerTANK
powerTANK is a reservoir of available amplification power that is deployed flexibly across the 4 channels of the amplifier. There is no need to set up the powerTANK as it adapts to the requirements of each zone or output without extra manual configuration of each individual channel.

Variable Load Drive
Variable Load Drive (VLD) ensures that the powerTANK capacity is utilized efficiently, providing consistent power to any channel with any impedance.

dualCOOL
The dualCOOL thermal design means that the amplifier typically operates as a convection cooled amplifier, but in extreme thermal conditions the amplifier is also equipped with an intelligent multi‑speed fan to ensure maximum performance and reliability in any application.

ecoRAIL
ecoRAIL’s power consumption is similar to a regular standby level, yet ecoRAIL still produces audio output suitable for background music levels, and the Auto Power Down (APD) mode can be engaged to further reduce power consumption to less than a watt when there is no signal present for extended periods.

amp‑LINK
The single cable installation feature of amp‑LINK is compatible with AES72‑1E (RJ45 connectors) wired devices. This solution provides easy installation for all four channels without needing to wire all the connections individually.

PFC power supply
Equipped with a PFC power supply and protection features usually reserved for the professional power amplifiers, means that the amplifier resists complete shutdown situations and will always perform at its best under all conditions.

Key Features

• 4 channel amplifier, with a total powerTANK capacity of 600 W
• Variable Load Drive (VLD) providing the same power into 4 Ω, 8 Ω, 70 V or 100 V
• ecoRAIL and APD deliver significant reduction in power consumption
• dualCOOL convection cooling with additional intelligent fan in case of extreme thermal conditions
• Comprehensive protection package for reliable operation

Technical Specifications

Output power
4 Ω, 8 Ω, 70 V, 100 V
Rated output power1
4 x 150 W
Maximum output power per channel (power sharing)1 at minimum impedance
500 W, 600 W, 500 W, 600 W
Total rated output power1
600 W
Number of channels
4
Output voltage rated output power
24.5 VRMS, 34.6 VRMS, 70.7 VRMS, 100 VRMS
Maximum output voltage
40.0 VRMS, 56.0 VRMS, 70.7 VRMS, 100 VRMS
Rated impedance per channel
4 Ω, 8 Ω, 33.3 Ω, 66.7 Ω
Minimum impedance per channel
2.6 Ω, 4 Ω, 10 Ω, 16.7 Ω
Amplifier
4 Ω, 8 Ω, 70 V, 100 V
Nominal gain (+6 dBu input sensitivity, LEVEL 0 dB)
24.0 dB, 27.0 dB, 33.2 dB, 36.2 dB
Maximum gain (0 dBu input sensitivity, LEVEL +6 dB)
30.0 dB, 33.0 dB, 39.2 dB, 42.2 dB
THD+N (1/8 rated output power, 1 kHz)
< 0.1 %
Crosstalk (ref. 1 kHz, 12 dB below maximum)
< -70 dB, < -75 dB, < -90 dB, < -95 dB
Frequency response (ref. 1 kHz, analog in to speaker out, -3 dB)
HP: 30/100/150 Hz to 20 kHzLP: 30 Hz to 150 Hz, HP: 50/100/150 Hz to 20 kHzLP: 50 Hz to 150 Hz
Damping factor (30/50 Hz to 1 kHz, ref. to rated impedance)
> 80, > 160, > 500, > 1000
Output stage topology
Class D, fixed frequency
Signal to noise ratio (A‑weighted, ref. to rated output power, LEVEL 0 dB)
> 98 dB, > 100 dB, > 101 dB, > 103 dB
Output noise (A-weighted, LEVEL 0 dB)
< -68 dBu, < -67 dBu, < -62 dBu, < -61 dBu
Type
2 x 6‑pin Euroblock, 3.81 mm, male, parallel 1x RJ45 (AES72-1E)