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Electronics > Audio > Professional Audio > Amplifiers > RADIODESIGNLABSHDMA35A Mixer Amplifier 35 Watt with Power Supply, Constant Voltage Output 25 70 or 100 V; Three inputs with individual front panel volume controls; Bass and Treble tone controls; Designed for background music with paging and music on hold; Master volume VCA controlled with remote adjustment capability; UPC 813721010773 (RADIODESIGNLABSHDMA35A DEVICE AMPLIFIER ENERGY CONTROL)
Electronics > Audio > Professional Audio > Mixer Consoles > RADIODESIGNLABSHDMA35A Mixer Amplifier 35 Watt with Power Supply, Constant Voltage Output 25 70 or 100 V; Three inputs with individual front panel volume controls; Bass and Treble tone controls; Designed for background music with paging and music on hold; Master volume VCA controlled with remote adjustment capability; UPC 813721010773 (RADIODESIGNLABSHDMA35A DEVICE AMPLIFIER ENERGY CONTROL)
Electronics > Audio > Professional Audio > Professional Audio Accessories > RADIODESIGNLABSHDMA35A Mixer Amplifier 35 Watt with Power Supply, Constant Voltage Output 25 70 or 100 V; Three inputs with individual front panel volume controls; Bass and Treble tone controls; Designed for background music with paging and music on hold; Master volume VCA controlled with remote adjustment capability; UPC 813721010773 (RADIODESIGNLABSHDMA35A DEVICE AMPLIFIER ENERGY CONTROL)
Electronics > Audio > Professional Audio > Sound Systems > RADIODESIGNLABSHDMA35A Mixer Amplifier 35 Watt with Power Supply, Constant Voltage Output 25 70 or 100 V; Three inputs with individual front panel volume controls; Bass and Treble tone controls; Designed for background music with paging and music on hold; Master volume VCA controlled with remote adjustment capability; UPC 813721010773 (RADIODESIGNLABSHDMA35A DEVICE AMPLIFIER ENERGY CONTROL)
RADIODESIGNLABSHDMA35A Mixer Amplifier 35 Watt with Power Supply, Constant Voltage Output 25 70 or 100 V; Three inputs with individual front panel volume controls; Bass and Treble tone controls; Designed for background music with paging and music on hold; Master volume VCA controlled with remote adjustment capability; UPC 813721010773 (RADIODESIGNLABSHDMA35A DEVICE AMPLIFIER ENERGY CONTROL)
RADIODESIGNLABSHDMA35A Mixer Amplifier 35 Watt with Power Supply, Constant Voltage Output 25 70 or 100 V; Three inputs with individual front panel volume controls; Bass and Treble tone controls; Designed for background music with paging and music on hold; Master volume VCA controlled with remote adjustment capability; UPC 813721010773 (RADIODESIGNLABSHDMA35A DEVICE AMPLIFIER ENERGY CONTROL)

SKU: HDMA35A

Brand: RDL

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RDL RDL-HDMA35A Mixer Amplifier 35 Watt with Power Supply, Constant Voltage Output 25 70 or 100 V; Three inputs with individual front panel volume controls; Bass and Treble tone controls; Designed for background music with paging and music on hold; Master volume VCA controlled with remote adjustment capability; UPC 813721010773; Manual or automatic (VOX) priority ducking; Balanced inputs and amplified outputs on detachable terminal blocks; Unbalanced inputs and outputs on RCA jacks; Includes power supply; High efficiency Class D operation; Dimensions 3.50" x 8.50" x 6.75"; Shipping Dimensions 10.75" x 9.13" x 3.94"; Weight 6.00 lbs; Shipping Weight 7.10 lbs


General Information

Manufacturer

RDL

Manufacturer Part Number

RDL-HDMA35A

Product Name

Mixer Amplifier 35 Watt with Power Supply, Constant Voltage Output 25 70 or 100 V
UPC Code 813721010773

Overview

The HD-MA35A is a three input audio mixer amplifier for systems demanding a broad range of features and high energy efficiency. Two output power amplifier zones are provided, 35 W (Zone 1) and 2 W (Zone 2). The Zone 1 output is driven from a high-efficiency Class D amplifier stage

The Zone 1 amplifier output level may be VCA controlled using various optional RDL remote controls, or by industry standard 0 to 10 Vdc or 0 to 10 kOhm controls. This output provides a constant voltage (25 V, 70 V or 100 V). The Zone 2 amplifier output drives an 8 Ohm speaker and or 600 Ohm telephone equipment

The HD-MA35A is engineered and manufactured in the USA. The HD-MA35A features two mixers. The Zone 1 mixer is located on the front-panel providing user level and tone controls for the 35 W amplifier output. The tone controls adjust the equalization at the Zone 1 amplifier output

The Zone 2 mixer on the rear panel provides level trimmers normally set by the installer to provide music on hold and or for background music in a small zone equipped with an 8 Ohm speaker. The Zone 2 section includes a 2 W amplifier and a 600 Ohm transformer-balanced MOH output

The HD-MA35A has three inputs that are common to both mixers. Input 1 accepts a balanced mic or line level source. Inputs 2 and 3 accept unbalanced mono or stereo line level sources

A balanced line level output is provided on a detachable terminal block to feed the inputs of other audio equipment or power amplifiers. Ground-referenced 24 Vdc power is available on a rear panel terminal block to power an optional external RDL module which may be mounted on the panel space provided. External module type examples: audio filtering or processing, mixing, isolation, twisted-pair sender and receiver

The Zone 1 amplifier includes an analog compressor and limiter for audio fidelity noticeably superior to conventional class D amplifiers with digital limiting. Increasing the input gain can substantially increase the average output power beyond that of a standard 35 W amplifier

A red front panel LED flashes when the compressor is preventing output clipping. Normal audio level signals remain unaffected by the compressor thereby preserving audio dynamics. The audio is compressed according to three dynamic time constants providing aural transparency while maintaining clean, unclipped amplified audio for input overloads of up to 20 dB

The HD-MA35A, with compression, is capable of producing average audio output levels and clarity normally expected from amplifiers with a much higher output power rating. A blue POWER LED illuminates when the HD-MA35A is powered from its external 24 Vdc power supply (included)

The power LED is dim when the mixer amplifier is in the standby mode, and is bright when the amplifiers are fully active. A front panel pushbutton is provided to manually switch between standby and active modes

The power amplifiers are equipped with both thermal and output short circuit protection. The high efficiency Class D output stage produces minimal heat for all levels of expected voice or music modulation

Features

  • Three inputs with individual front panel volume controls
    Bass and Treble tone controls
  • Designed for background music with paging and music on hold
  • Master volume VCA controlled with remote adjustment capability
  • Manual or automatic (VOX) priority ducking
  • Balanced inputs and amplified outputs on detachable terminal blocks
  • Unbalanced inputs and outputs on RCA jacks
  • Includes power supply
  • High efficiency Class D operation

Specifications

Amplifier Zones (2)
Zone 1 (Main): 35 W RMS, front-panel mixer (user controls); Zone 2: 2 W RMS (8 Ohms), rear-panel mixer (trimmers)
Audio Inputs (3)
Balanced, mic or line switch selectable on terminal blocks; 2, unbalanced stereo summing inputs on RCA jacks
Maximum Input Level
Mic Inputs: -11.5 dBu; Balanced line inputs: + 19 dBu; Unbalanced Inputs: + 9 dBV (+15.5 dBV, one input); (for 1 percent THD+N at output)
Phantom Voltage
24 Vdc (IEC 61938: 2013), switch-selectable for the mic input
Ducking/Muting Actuation
Automatic (Input 1 VOX: rear-panel adjustable signal threshold with LED indicator) or Manual (contact closure to ground)
Ducking/Muting Release Delay
4 seconds, nominal
Ducking/Muting
Switch-selectable for inputs 2 and/or 3, 25 dB ducking attenuation, nominal
External RDL Module Power Output
24 Vdc, 100 mA maximum, ground-referenced
Input level (to cross compressor threshold equaling 23 W amplified output)
Mic Inputs: -50 dBu (2.5 mV), (front panel gain at maximum)
Balanced line inputs: -21 dBu (70 mV), (front panel gain at maximum)
Unbalanced Inputs: -15 dBV (180 mV), (front panel gain at maximum, both inputs driven)
Noise (line output)
Mic input: -68 dB, Balanced line input: -72 dB (below compressor threshold at maximum gain);
Unbalanced Inputs: Less than -85 dB (maximum gain)
Noise (amplified output)
Mic input: -68 dB, Balanced line input: -72 dB (below compressor threshold at maximum gain);
Unbalanced Inputs: Less than -75 dB (maximum gain)
THD+N
Less than 0.5 percent (1 kHz at compressor threshold, main amp output); Less than 0.25 percent (line output, main)
CMRR
Mic inputs: Greater than 50 dB (50 Hz to 120 Hz); Balanced line inputs: Greater than 80 dB (50 Hz to 120 Hz, transformer-coupled input)
Compressor
Threshold 2 dB below rated output, automatically adjusting attack and release times
Frequency Response (mixer)
Mic to line output: More or less 1.5 dB (40 Hz to 25 kHz); Balanced line input to line output: More or less 1 dB (20 Hz to 20 kHz); Unbalanced line input to line output: More or less 0.5 dB (20 Hz to 20 kHz)
Frequency Response (Zone 1 amplifiers)
Constant voltage: More or less 3 dB (50 Hz to 18 kHz); 4/8 Ohm: More or less 1 dB (50 Hz to 20 kHz)
Frequency Response (Zone 2 amplifiers)
8 Ohm: More or less 1.5 dB (50 Hz to 20 kHz); 600 Ohm: More or less 1.5 dB (30 Hz to 18 kHz)
Tone Controls
More or less 10 dB at 10 kHz, More or less 9 dB at 100 Hz (front-panel) with center detent
Audio Outputs (2)
4 dBV nominal (1.23 V), balanced, terminal block (FLAT); 0 dBu nominal balanced, terminal block (zone 2 mixer, 600 Ohm output)
MOH Output
0 dBu nominal (775 mV), 600 Ohm transformer-isolated, 16 dB headroom
Power Amplifier Outputs (2)
Zone 1 (main): 35 W RMS (25, 70 or 100 V); Zone 2: 2 W (8 Ohms, on detachable terminal block)
Indicators (6)
Indicators (6):Front-panel: Signal present (3; 1 per input, green), Compressor activity (red), Power (bright=on, dim=standby, blue); Rear-panel: Ducking/muting threshold (yellow)
VCA
Zone 1 (main) master level, 0 to 10 Vdc control, detachable terminal block (compatible with RDL VCA wall controls)
Front-panel controls (6)
Zone 1 (main) mixer level controls (3, inputs 1 through 3), EQ (2, bass and treble), Power (latching pushbutton, on/standby)
Rear-panel controls (9) Mic/Line switch (Input 1), Input 1 ducking/muting detector sensitivity trimmer, Phantom voltage switch (Input 1), Ducking control switches (2, to duck inputs 2 and/or 3), Zone 2 mixer level controls (3, inputs 1 through 3), HD-MA35: Output impedance switch 4 or 8 Ohms
Power Supply (included) 100 to 240 Vac, 50-60 Hz, 50 W; 24 Vdc output to amplifier chassis
Ambient Operating Environment 0C to 50C Maximum; 20C Recommended
Dimensions 3.50" x 8.50" x 6.75"
Shipping Dimensions 10.75" x 9.13" x 3.94"
Weight 6.0 lbs
Shipping Weight 7.1 lbs

A-20170809-1505-210-L
M-20191123-1505-254-L
M-20200117-1505-253-L

*This item is BRAND NEW - not refurbished. It comes with all manufacturer supplied accessories, and full manufacturer's USA warranty.

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