CTP Systems B-MA2 Quick Manual

Dual low-noise microphone preamplifier beltpack

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B-MA2 Dual Low-Noise Microphone

Preamplifier Beltpack

The B-MA2 is a compact, battery-powered unit containing two broadcast-quality,

variable-gain microphone preamplifiers. Level metering and setup are via a bright,

crisp OLED display and several configurable options allow tailoring of the unit to a

wide variety of broadcast applications.

Audio I/O

Standard 3-pin XLR connectors (pin 1 = ground, pin 2 = phase/hot,

pin 3 = antiphase/cold) are provided for all audio inputs and outputs.

The outputs are electronically balanced. If an unbalanced output is required then use

pin 2 as 'hot' and pin 1 as 'cold. Do not short either pin 2 or pin 3 to pin 1 as this will

considerably reduce the life of the battery.

The unit requires either a PP3/6F22-size 9V battery (alkaline types strongly

recommended) or an external power supply of nominally 12VDC at 100mA. DC input

is via a 2.1mm 'barrel' connector (centre pin positive, acceptable range 9-16VDC)

compatible with both standard plugs and Cliff twist-locking parts when extra security

is required.

During normal operation, the OLED display shows the status of the battery and two

pseudo-PPM characteristic bargraph level meters indicating the output level on each

channel. When the battery indicator is empty, the battery should be changed as a

matter of urgency.

www.ctpsystems.co.uk

Telephone +44 (0)1580 891114

Table of Contents

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Page 1 B-MA2 Dual Low-Noise Microphone Preamplifier Beltpack The B-MA2 is a compact, battery-powered unit containing two broadcast-quality, variable-gain microphone preamplifiers. Level metering and setup are via a bright, crisp OLED display and several configurable options allow tailoring of the unit to a wide variety of broadcast applications.
Page 2 Setup Several features of the B-MA2 may be customised to user preference. To enter Setup mode, hold the front-panel SEL button for approx. two seconds. The OLED display will show the first adjustable parameter and its current value. Further brief presses of the SEL button will step through the available parameters, eventually looping back to the beginning.
Page 3 Dimensions 81mm wide, 55mm high, 115mm deep including beltclip (removable). www.ctpsystems.co.uk Telephone +44 (0)1580 891114...
Page 4 Low Voltage Directive: EN60065 Emissions: EN55103.1 Immunity: EN55103.2 WEEE CTP Systems are registered for Business to Business sales of WEEE in the UK. Our registration number is WEE/DF0509VR. RoHS The product conforms to the RoHS Directive 2002/95/EC for restriction of the use of hazardous substances in electrical and electronic equipment.