Output stage topology, amplifier Class D
Equalization
• Low shelving filter ±15 dB / 60 Hz
• Mid peak filter ±12 dB / 2.4 kHz
• High shelving filter ±15 dB / 12 kHz
Master EQ 7-band (63, 160, 400, 1k, 2.5k, 6k,
12k Hz)
±10 dB / Q = 1.5
Filter
• Low-cut filter, microphone processing
(switchable)
80 Hz, 18 dB/oct. or 150 Hz,
12 dB/oct.
• Low-cut filter, amplifier (engaged in
Direct Drive mode)
50 Hz or 70 Hz, 18 dB/oct.
• Speaker processing LPN, switchable
Delay MASTER B, selectable 0–145 ms (0–50 m)
Effects
• Type Stereo 24/48-bit multi effects processor
• Effect presets 32 factory presets, user editable
• Remote control Footswitch
Display 128 x 64 pixels, LCD
Audio player (USB at front panel)
• Switching mode power supply (μC
controlled)
FAT 32
• Supported audio file formats MP3, WAV
• Interface USB2.0, female type A
• USB power supply, max. rated current
(short circuit proof)
5 V, 500 mA
Digital audio interface (USB at rear panel)
• Channels 2 in, 2 out
• AD/DA conversion 16-bit, delta-sigma
• Sampling rate 32/44.1/48 kHz
• PC interface USB2.0, female type B
Protection
• MASTER A, B, AUX outputs Adjustable peak limiters, -10 – +11 dBu
• Amplifier Audio limiters, high temperature, DC, HF,
short circuit, peak current limiters, turn-on
delay, back EMF
PM 502 Technical data | en 35
Bosch Sicherheitssysteme GmbH User manual 15-May-14 | 02 | F01U297804