ProLoop C (170m2)

The PROLOOP amplifier family is designed for professional use in medium-sized rooms (up to 170 m²) in private buildings and public facilities, in which particularly high dependability and extremely reliable operation are required.

Thanks to a 100-percent short-circuit-proof amplifier, switchable, symmetrical XLR input jacks and extremely stable output performance, the PROLOOP C is able to meet these demands.

Automatic Gain Control (AGC) guarantees consistent field strength and reproduces stable sound with a special emphasis on clear speech, even under acoustically demanding conditions.

Corresponding test equipment can be used to evaluate the sound quality via the integrated monitor out jack.

• High output current: 4 A RMS
• Short-circuit-proof
• Automatic fuse reset
• Two symmetrical XLR input jacks
• One RCA input jack
• One line output jack
• Extra-sturdy jacks
• Dual action AGC for excellent speech recognition
• High availability, operating reliability and quality assurance
• Convenient monitoring of the magnetic field: Can be done using headphones or speakers
• Treble control to compensate for treble losses due to reinforcement

Mains connection:

• 230-240 V AC 50 Hz, 7-200 W, 10 A fuse
• Coverage: 170 m² acc. to IEC 60118-4, single-loop, free field

Induction loop output

• Max. current: 4 A RMS, short-circuit-proof
• Max. voltage: 31 V from peak to peak
• Output AGC:  Sets voltage and power for steady signals like oscillation and sine curves after 0.6-1 seconds to -10 dB. Short pulses and normal program signals are not limited.
• Frequency response: 100 - 5000 Hz ( ± 3 dB)
• Distortion: < 1%
• Cable connection: Screw connection on rear panel of the amplifier

Outputs

• 1. LINE OUT: 0 dBm-RCA out (with AGC function)

Inputs

• IN 1 and 2: 0.5 mV-100 mV / 10 kOhm (mic.) alt. 25 mV - 4 V/ 10 kOhm (line) AGC, switchable phantom voltage, XLR connections
• IN 3: 50 mV-10 V / 10 kOhm, RCA connection
• AGC: Dynamics: > 70 dB
• Rise time: 2 - 500 ms
• Fall time: 0,5 - 20 dB/s

Controls and displays

• Treble control: 0 - +9 dB, potentiometer
• Induction loop adjustment: 0 - 170 m², potentiometer
• Displays: Mains connection: 1 green LED 
• Input level: 1 green LED 
• Induction loop power: 1 green LED

Induction loop monitoring

• 6.3 mm jack for headphone connection

Enclosure

• Dimensions: (H x W x D) 64 x 295 x 205 mm
• Weight: 3,6 kg
• Color: black

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