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User Manual for Benchmark AHB2 High-Resolution Power Amplifier Click to enlarge the picture
Contents of the user manual for the Benchmark AHB2 High-Resolution Power Amplifier
- Product category: Power Amplifiers Benchmark
- Brand: Benchmark
- 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 Benchmark Power Amplifiers
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User manual for the Benchmark AHB2 High-Resolution Power 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 Benchmark 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 Benchmark 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 Benchmark product will considerably shorten its lifespan!
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Product description The silver, rack mountable AHB2 High-Resolution Power Amplifier from Benchmark is designed to accurately reproduce high resolution audio. The dynamic range approaches 130 dB, and the frequency response extends below 0.1 Hz and beyond 200 kHz. When reproducing high-resolution 24-bit PCM and 1-bit DSD digital audio formats, this amplifier allows you to hear nuances and dynamics which get lost when using amplifiers with lower dynamic ranges.
The AHB2 has bi-polar class-AB output stage that delivers high output current and low noise. The THX patented feed-forward error correction provides accurate cancellation of zero-crossing errors. In addition, the AHB2 uses a resonant switching power supply with a fast control loop so mechanical hum is eliminated while magnetic field strength is reduced. - Dynamic range approaches 130 dB
- Bi-Polar class AB output stage provides efficiency and low crossover distortion
- SpeakON output connectors
- Rack mountable with 2 RU faceplate
In the Box Benchmark AHB2 High-Resolution Power Amplifier (Silver, Rack Mount) Limited 1-Year Warranty Table of Contents
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Technical parametersBenchmark 500-18000-300 Specs | Output Power | 1 kHz, < 0.0003% THD+N
100 W/channel into 8 Ω, both channels driven
130 W/channel into 6 Ω, both channels driven
190 W/channel into 4 Ω, both channels driven
240 W/channel into 3 Ω, both channels driven
200 W Bridged Mono into 16 Ω
380 W Bridged Mono into 8 Ω
480 W Bridged Mono into 6 Ω | | Input Sensitivity | Low-Gain: 22 dBu (9.8 Vrms)
Mid-Gain: 14.2 dBu (4 Vrms)
High-Gain: 8.2 dBu (2 Vrms) Use Mid-Gain or High-Gain settings for unbalanced inputs. Unbalanced inputs require RCA to XLRM adapter cables. | | Input Impedance | 50 kΩ, normal mode
1 MΩ, common mode | | Triggers | 12 VDC, 200 mA current-limited output of remote device
VIL: 1.26 V, VIH: 2.7 V (input responds to 3.3 V logic and higher) | | Input Voltage Range | -0.3 to 30 VDC | | Input Impedance | 20 kΩ | | Cross Talk | Better than -115 dB at 1 kHz
Better than -92 dB at 20 kHz | | Frequency Response | Better than 0.1 Hz to 200 kHz, +0/-3 dB
-0.01 dB at 20 Hz, -0.17 dB at 20 kHz, 8Ω Load
-0.23 dB at 20 Hz, -0.32 dB at 20 kHz, 4Ω Load | | Input CMRR | 80 dB at 20 Hz, typical
80 dB at 1 kHz, typical
65 dB at 20 kHz, typical | | Maximum Output Current | 18 A per channel, both channels driven
18 A protection shut-down threshold | | Signal-to-Noise Ratio | 132 dB A-weighted, Stereo Mode
135 dB A-weighted, Bridged Mono
130 dB Unweighted, 20 Hz to 20 kHz, Stereo Mode
133 dB Unweighted, 20 Hz to 20 kHz, Bridged Mono | | THD+N | 1 kHz, 80 kHz LPF, at full rated output into any rated load
Stereo Mode: < -118 dB (< 0.00013%)
Mono Mode: < -118 dB (< 0.00013%) | | THD | 1 kHz, 20 kHz LPF, at full rated output into any rated load
Stereo Mode: < -119 dB (< 0.00011%)
Mono Mode: < -120 dB (< 0.00010%) | | Cooling | Passive heat sinks | | Power Requirements | 100 to 120 VAC ± 10%, 8 A, 50 - 60 Hz
220 to 240 VAC ± 10%, 8 A, 50 - 60 Hz | | Dimensions (W x H x D) | 19.0 x 3.9 x 9.3" (48.3 x 9.9 x 23.7 cm) including feet and binding posts | | Weight | 13.5 lb (6.1 kg) |
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