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This distribution amplifier drives multiple isolated line feeds from a single input source. The DA-2 is ideal for driving lines to multiple amps in live sound applications, distributing audio to multiple tape decks, feeding stereo signals to multiple zoned locations, etc. This 1U stereo audio distribution amplifier features four outputs per channel. Each output is ground lifted and has its own level control and clip indicator light. Input signals are monitored by signal-present LEDs and clip LEDs. The headphone circuit can be switched to monitor either channel. A combine switch applies both inputs to all 8 outputs, making the DA-2 a one-or two-in, eight-out DA. All audio connections are made through actively balanced line level XLR connectors. Where transformer isolation is necessary, the ISO-8 (a 1U 8-channel accessory) is available.
Frequency Response: 20Hz-20kHz ±0.3dB Maximum Input level: +22dBu Input Impedance: 1M Ohm Common Mode Rejection: 90dB at 60Hz Maximum Output Level: +22dBu Output Impedance: 112 Ohm S/N at 0dB Input, 0dB Gain: 87dB Rise Time: 3µS Total Harmonic Distortion: 0.004% @ 1kHz Output Channel Separation: 74dB Headphone Impedance: 75 Ohm minimum Channel Output Gain: 18dB Power Requirements: 115/230VAC
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The Whirlwind LD410 Line Driver is the ultimate tool for matching audio
equipment signal levels. The LD410 is both a professional quality, sonically
superior -10 to +4dB to –10dB level converter and a flexible multichannel
distribution amplifier and is housed in a single rack space enclosure.
Each of the LD410 eight output channels feature gain controls, LED metering and mute buttons.
There are also eight input channels utilizing the highest quality, low noise preamplifiers with 14dB input pads that can be engaged to attenuate high input signals. The LD410 is factory configured with four channels of -10dB to +4dB conversion (RCA input jacks to male XLR outputs) and four channels of +4dB to -10dB level conversion (female XLR inputs to RCA output jacks).
Inputs to channels 3, 4, 7 and 8 are provided either balanced (via the screw terminal block) or unbalanced (via RCA jacks).
Outputs 1, 2, 5 and 6 are provided balanced (via the screw terminal block) AND unbalanced (via RCA jacks). Each output is fed with a separate driver so that both the balanced and unbalanced outputs may be used simultaneously. A +6dB boost is added to the unbalanced output to compensate levels.
Assignable signal routing jumpers inside the LD410 permit the creation of multiple distribution amplifiers by allowing multiple outputs to receive their signals from a common input.
The LD410 has an internal power supply, which can be set for 115VAC or 230VAC by changing internal jumpers.
For a more detailed explanation of the numerous features found in the LD410, please download the owner's manual here .