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 Monday  |  05.06.2024
Products - behold Classic - Power Amplifier - BPA768 - Technical Data - Tabulated Data 

Technical Data BPA768-484 + BPA768-400:

The BPA768-400 is a Power Amplifier containing two independent mono blocks for use in Stereo or Bi-Amping mode

The technical data given here are valid at room temperature (+25°C) and power supply of 
nominal 230V (200V bis 264V, 50Hz +/-3%), other wise noted:

dB-values given in brackets (-5dB) are valid for the actual measured:

Features of the Analogue Outputs:

Output voltage maximum (0dB): 134Vss = 33.5dBV @ 3.9Ω resistive
Output voltage maximum (-1dB): 116Vss = 32.3dBV @ 2.0Ω resistive
Output power sinus one block maximum (0dB): 575W CW @ 3.9Ω resistive each channel
Output power sinus one block maximum (-1dB): 840W CW @ 2.0Ω resistive each channel
Output power one block (0dB) pulse 1 period 30Hz sinus: 1100W @ 2.0Ω resistive
Output power sinus total stereo (0dB): 1150W CW @ 3.9Ω resistive  each channel
Output power sinus total stereo (-1dB): 1680W CW @ 2.0Ω resistive  each channel
Output impedance DC - 100Hz: <0.71mΩ
Output impedance 100Hz - 1kHz: <1.1mΩ
Output impedance 1kHz - 10kHz: <7.1mΩ
Output impedance 10kHz - 20kHz: <14mΩ
Output impedance 20kHz - 50kHz: <18mΩ
Output impedance 50kHz - 100kHz: <36mΩ
Damping factor @ 20Hz and 100Hz: 11220 = 81dB (8Ω test load)
Damping factor @ 1kHz: 7080 = 77dB (8Ω test load)
Damping factor @ 10kHz: 1120 = 61dB (8Ω test load)
Damping factor @ 20kHz: 562 = 56dB (8Ω test load)
Damping factor @ 50kHz: 447 = 53dB (8Ω test load)
Damping factor @ 100kHz: 224 = 47dB (8Ω test load)
Intermodulation products @ 10kHz (-1dB): -100dBc
THD+N vs frequency DC-3kHz unweighted (-1dB): <-95dB
THD+N vs frequency 3kHz-20kHz unweighted (-1dB): <-90dB
Signal to noise unweighted (-1dB): <-97dB
Signal to noise A-weighted (-1dB): <-98dB
Suppression of mains hum @ (-10dB) (+23.5dBV = 2x 58W): -130dBc @ 50Hz; -130dBc @ 100Hz; -123dBc @ 150Hz;
Suppression of mains hum  @ (0dB) (+33.5dBV = 2x 575W): -130dBc @ 50Hz; -130dBc @ 100Hz; -128dBc @ 150Hz;
Offset voltage at the output: +/- 200 mV max.

Analogue Transfer Functions:

Coupling: DC (no lower corner frequency, no coupling capacitors)
Frequency slope of the analogue final stage amplifier DC-20kHz: +/- 0.025 dB
Frequency slope of the analogue final stage amplifier 20kHz-100kHz: +0.10 / -0dB
Frequency slope of the D/A-Converter DC - 10kHz 
@ 108kHz sampling rate:
+0 / -0.15dB
Frequency slope of the D/A-Converter 10kHz - 20kHz 
@ 108kHz sampling rate:
+0 / -0.30dB
Frequency slope of the D/A-Converter 20kHz - 50kHz
@ 108kHz sampling rate:
+0 / -2.20dB

Digital Features:

Sampling frequency at mono playback: 768kHz
Sampling frequency at stereo playback: 384kHz
Number of bits at mono input: 1x 24Bit
Number of bits at stereo input: 2x 24Bit
Working frequency of the PFC (ADSP21990): 98.304MHz (2048x 48kHz)
Word length / Accumulator of the PFC (ADSP21990): 16Bit / 48Bit
Working frequency of the DSP (ADSP21161): 98.304MHz (2048x 48kHz)
Word length / Accumulator of the DSP (ADSP21161): 32Bit / 64Bit
Working frequency of the D/A-Converter: 24.576MHz (512x 48kHz)
Working frequency of the precision oscillator: 24.576MHz (512x 48kHz)
Side band noise: TBD dBc/Hz @ 1kHz Offset and 24.576MHz
Number of D/A-Converters: 8 pairs, (8x AD1853)

Data for Audio-Digital Connection Technique:

Coupling: DC; On: +5V to +7V; Off 0V
Input level at 50Ω: +4.2dBm to +9.2dBm
Digital data rate at the input / coupling: 49.152MBd / AC
Max. attenuation of the connection cable: 10dB @ 50MHz; 20dB @ 200MHz
Max. distance with RG223 (20dB @ 100m/200MHz): 100m
Max. distance with RG58 (24dB @ 100m/200MHz): 83m
Max. distance with RG316 (35dB @ 100m/200MHz): 57m
Max. distance with RG174 (45dB @ 100m/200MHz): 44m
Max. distance with RG178 (62dB @ 100m/200MHz): 32m

Power Supply:

Power supply voltage single phase, nominal: 100V to 240V
Power supply voltage range operating: 85V to 264V
Power consumption stand by: <8.0W, typ. 7.7W
Power consumption idle (<-5dB), 400mA idle currant: 130W to 155W
Power consumption idle (<-5dB), 1000mA idle currant: 230W to 255W
Power consumption idle (0dB), 400mA idle currant: 210W to 235W
Power consumption idle (0dB), 1000mA idle currant: 405W to 430W
Power consumption @ 1200W Output: ca. 1900W

Connectors:

Digital input connector: SMA 50Ω female gold plated (standardized RF-connector)
Number of power outputs: 2
Quality of the power output clamp: WBT 0645, fully isolated
Power supply connector: Standard IEK mains socket

Temperatures:

Temperature range operating (room temperature): +10°C to +40°C
Temperature range operating of the cooler: +10°C to +70°C
Temperature range storage (transportation also): 0°C to +70°C

Mechanical Figures:

Available colour: Al-nature
Dimensions BPA768-484 in mm (WxHxD): 484 x 300 x 416
Weight BPA768-484: 45kg
Dimensions BPA768-400 in mm (WxHxD): 400 x 300 x 416
Weight BPA768-400: 41kg

Safety:

Electrical Safety: according EN 60065: 2002
Safety against squirting water: according IPX4

CE-Approval:

Emission: EN 55013: 2000, EN 61000-3-2: 2000 and EN 61000-3-3: 1996
Disturbing influence: EN 55020: 2000
Electrical discharge: EN 61000-6-1: 2001

State of information: 05. February 2006.  Data given are subject of change without notice.




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