Crown by Harman CH1 Profi-Installationsendstufe

4 HE

70 Volt

Profi-Installationsendstufe CH 1


Specifications

Power
Load Impedance:
Safe with all types of loads.
2, 4 and 8 ohm Stereo;
16 ohm at 70V Stereo;
32 ohm at 100V Stereo;
4, 8 and 16 ohm Bridge;
32 ohm at 140V Bridge;
64 ohm at 200V Bridge.


Voltage Gain, 1 kHz, 1.4V sensitivity,
30.5 dB (8 ohm);
34 dB (70V);
37 dB (100V).

AC Line Current,
100 Volts: 7.6 A;
120 Volts: 6.3 A;
230-240 Volts: 3.5 A.
AC Line Connector: Detachable 15A IEC connector
with country-specific plug.


Output Power:
Performance
Frequency Response, 20 Hz to 20 kHz at 1
watt: ±0.1 dB.
Phase Response: ±15 degrees deviation from linear phase from 20 Hz to 20 kHz at 1 watt.

Signal to Noise Ratio, A-Weighted: Better than 105 dB below rated 1-kHz power.


Total Harmonic Distortion (THD), 1 kHz at rated power: 0.5% or less true THD from 20 Hz to 20 kHz.


Intermodulation Distortion (60 Hz and 7 kHz at 4:1): Less than 0.1% at rated power to 30 dB below rated power at 8 ohms.

Damping Factor (8 ohm): Better than 400 from 10 Hz to 400 Hz.
Crosstalk, 20 Hz to 20 kHz: Better than 50 dB below rated power.
Common Mode Rejection (CMR): Better than 40 dB from 20 Hz to 1 kHz.

DC Output Offset (Shorted Input): ±10 mV.

Controls
Level: A detented rotary level control for each channel located on the rear panel.
Power: An on/off rocker switch located on the front panel.
Mode: A two-position switch located on the back panel which, when turned to “Stereo,” operates the amplifi er as two independent channels. When “Bridge” is selected, the amplifier bridges the two output channels for twice the output voltage.


Channel Operation Switch: A two-position switch located on the back panel which, when turned to 4/8 Ohm, sets the amplifier to drive low-impedance speaker loads. Turning the switch to 70V/100V sets the amplifi er to drive distributed high-impedance speaker loads and
inserts a 70-Hz high-pass filter into the signal chain to prevent step-down transformer saturation.