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User Manual for Aphex 120B 1x4 Distribution Amplifier Click to enlarge the picture
Contents of the user manual for the Aphex 120B 1x4 Distribution Amplifier
- Product category: Distribution Amplifiers Aphex
- Brand: Aphex
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Aphex Distribution Amplifiers
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User manual for the Aphex 120B 1x4 Distribution Amplifier contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Aphex product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Aphex user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Aphex product will considerably shorten its lifespan!
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Product description The Aphex 120B 1x4 Distribution Amplifier is designed for multi-zone installed sound applications such as for restaurants, bars, or multiple rooms in a home. The unit features a single high impedance input and four electronically servo-balanced low impedance outputs. Built with transformerless circuits the amplifiers provide a flat frequency response without overshoot or ringing and can be used for distributing both audio and SMPTE time code.
Each output has its own volume controlled amplifier. The low impedance of the outputs allows for long wire runs and high capacitive loads without loss of stability or frequency response. Balancing the outputs with servos and grounding the unused pin allows each output to be used single-ended without changing the gain setting. For I/O the unit utilizes one 3-pin XLR female input, one 3-pin XLR male thru output for connecting to another device, and four 3-pin XLR male outputs for each amplifier channel.
The input circuit utilizes common-mode rejection to preserve headroom, and the high impedance allows for bridging the input signal with minimal loading. This allows you to drive multiple amplifiers simultaneously from the same source. The front panel of the chassis features the four volume controls and an LED indicator light to show signal presence and clipping. The amplifier can be rack mounted as one unit or in pairs using the available rack mount kit sold separately. UPC: 693714012010 In the Box Aphex 120B 1x4 Distribution Amplifier Power Cord Limited 2-Year Warranty User Manual PDF 1.2mb Table of Contents
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Technical parametersAphex 120B Specs | | | I/O | 1 x 3-pin female XLR input
1 x 3-pin male XLR thru
4 x 3-pin male XLR output | | Frequency Response | 5 to 100,000 Hz | | THD | 0.002% at +4 dBm
0.005% at +20 dBm | | IMD | 0.002% at +10 dBm | | Hum and Noise | Better than 90 dBm at unity gain | | Input Impedance | 100 kΩ, balanced | | Maximum Input Level | +25 dBm | | CMRR | >60 dB | | Output Impedance | 65 Ω | | Maximum Output Level | +25 dBm into 600 Ω balanced, +21 dBm unbalanced | | Output Gain | +15 dB | | Channel Isolation | >70 dB | | Connectors | XLR inputs and outputs | | Slew Rate | 13 V/uS | | AC Power | 100, 120, 220, or 240 VAC at 50 to 60 Hz | | Dimensions (H x W x D) | 1.75 x 8.25 x 7.25" (4.45 x 21.00 x 18.40 cm) | | Weight | 3.5 lb (1.6 kg) | | | | Package Weight | 4.7 lb | | Box Dimensions (LxWxH) | 12.2 x 9.2 x 4.3" |
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