Unlike Class-D amplifiers, the AHB2 does not produce elevated levels of ultrasonic noise that may impact the performance of your tweeters. It is also known for its transparency, ultra-low noise, and accurate sound reproduction, making it a preferred choice among audiophiles and professionals. Q: What makes the AHB2 different from other power amplifiers?Ī: The AHB2 stands out with its THX-AAA™ technology, which ensures exceptional audio performance with ultra-low distortion and high power efficiency. It also features a high-power bridged-mono mode that provides 380 W into 8 Ohms. It includes gain settings that are matched to standard balanced XLR and unbalanced RCA signal levels. Q: What are the key features of the AHB2?Ī: The AHB2 boasts features such as THX-AAA™ technology, a power output of up to 100W per channel into 8 ohms, an astonishing signal-to-noise ratio of over 130 dB, low total harmonic distortion (THD+N) of less than 0.00013%, and a 0.1 Hz to 200 kHz (+0/-3dB) frequency response. It incorporates THX-AAA™ technology, renowned for its low noise, low distortion, and high output power. Right AHB2 1- to BLACK of Right REL sub (ground input)Īdjust the level of the REL subwoofer by turning the control on the back of the unit.Frequently Asked Questions: Benchmark AHB2 Power Amplifier Q: What is the Benchmark AHB2 Power Amplifier?Ī: The Benchmark AHB2 is a high-performance power amplifier designed to deliver exceptional audio quality and precision.Right AHB2 M+ to YELLOW and RED of Right REL sub (right input).Left AHB2 1- to BLACK of Left REL sub (ground input).
Left AHB2 M+ to YELLOW and RED of Left REL sub (left input).Two Mono AHB2 amplifiers feeding two REL subwoofers Caution: Do not make any connections to the M- binding post.Set the AHB2 MODE switches to MONO on both amplifiers.Note: It may be necessary to extend the RED wire if the left and right amplifiers are not stacked.Right AHB2 M+ to RED of REL sub (right input).Left AHB2 1- to BLACK of REL sub (ground input).Left AHB2 M+ to YELLOW of REL sub (left input).Two Mono AHB2 amplifiers feeding a single REL subwoofer AHB2 2- to BLACK of Right REL sub (ground input).AHB2 2+ to YELLOW and RED of Right REL sub (right input).AHB2 1- to BLACK of Left REL sub (ground input).AHB2 1+ to YELLOW and RED of Left REL sub (left input).One Stereo AHB2 amplifier feeding two REL subwoofers One Stereo AHB2 amplifier feeding one REL Subwoofer This will short the output of the AHB2 ground and put it into protection mode. Please read these instructions carefully because the yellow, red and black connection assignments will vary according to one of the following system configurations: System ConfigurationsĬaution: Never connect the REL BLACK wire to a RED binding post on the AHB2. We recommend connecting your speakers to the SpeakON connectors on the back of the AHB2 while reserving the binding posts for the REL cable. The yellow, red and black spade terminals will need to be connected to the binding posts on the back of the AHB2 power amplifier. This summing allows the input of a left and right channel which will be summed to a single subwoofer. The yellow and red inputs are summed together in the REL. The black wire is a signal ground reference for the speaker inputs. The yellow and red wires deliver speaker-level inputs to the REL, but draw no power from the amplifier. The SpeakON connector plugs into the back of the REL subwoofer. REL supplies a cable with yellow, red and black wires that connect to the speaker output terminals on a power amplifier. REL "Baseline Blue" High-Level Input Cable In mono mode, M- is an inverted version of M+. The speaker is connected between M+ and M- using either the binding posts or the SpeakON connectors. These are the outputs for mono operation. Notice that the 1+ post is labeled M+ and the 2+ post is labeled M. The right speaker is connected between 2+ and 2. In stereo mode, the left speaker is connected between 1+ and 1- using the binding posts or the SpeakON connectors. Notice that the SpeakON connectors provide access to the same set of outputs. We will use one of these speaker ground returns as a connection point for the REL ground wire. The black terminals (1- and 2-) are the ground returns for each of the two channels. The two red binding posts (1+ and 2+) on the AHB2 are driven by the amplifier outputs. In mono mode, the output of the ABH2 is balanced. In stereo mode, the outputs of the AHB2 are conventional unbalanced outputs. The MODE switch in the lower right-hand corner sets the AHB2 to stereo or mono mode.
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