RDL HD-MA35A 35 Watt Mixer Amplifier with Power Supply - Constant Voltage Output 25 V 70 V or 100 V

Name: RDL HD-MA35A 35 Watt Mixer Amplifier with Power Supply - Constant Voltage Output 25 V 70 V or 100 V
Brand: Radio Design Labs
SKU: RDL-HD-MA35A
Price: 400.27 USD
Availability: PreSale

ITEM #: RDL-HD-MA35A MFG #: HD-MA35A

Radio Design Labs

List Price:

$533.70

Our Price:

$400.27

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HD-MA35A - 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 U.S.A.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.

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 block; 2, unbalanced stereo summingInputs on RCA jacks
- MaximumInput Level: MicInput: -11.5 dBu; Balanced lineInput: + 19 dBu; UnbalancedInputs: + 9 dBV (+15.5 dBV, one input); (for 1% 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 forInputs 2 and/or 3, 25 dB ducking attenuation, nominal
- External RDL ModulePower Output: 24 Vdc, 100 mA maximum, ground-referencedInput level: (to cross compressor threshold equaling 23 W amplified output)
  MicInput: -50 dBu (2.5 mV), (front panel gain at max.)
  Balanced lineInput: -21 dBu (70 mV), (front panel gain at max.)
  UnbalancedInputs: -15 dBV (180 mV, front panel gain at max., bothInputs driven)
- Noise (line output): MicInput: -68 dB, Balanced lineInput: -72 dB (below compressor threshold at max gain);
  UnbalancedInputs: <-85 dB (max gain)
- Noise (amplified outputs): MicInput: -68 dB, Balanced lineInput: -72 dB (below compressor threshold at max gain);
  UnbalancedInputs: <-75 dB (max gain)
- THD+N: < 0.5% (1 kHz at compressor threshold, main amp output); < 0.25% (line output, main)
- CMRR: MicInput: > 50 dB (50 Hz to 120 Hz); Balanced lineInput: > 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: ±1.5 dB (40 Hz to 25 kHz); Balanced lineInput to line output: ±1 dB (20 Hz to 20 kHz); Unbalanced lineInput to line output: ±0.5 dB (20 Hz to 20 kHz)
- Frequency Response (Zone 1 amplifier): Constant voltage: ±3 dB (50 Hz to 18 kHz); 4/8 Ohm: ±1 dB (50 Hz to 20 kHz)
- Frequency Response (Zone 2 amplifier): 8 Ohm: ±1.5 dB (50 Hz to 20 kHz); 600 Ohm: ±1.5 dB (30 Hz to 18 kHz)
- Tone Controls: ±10 dB @ 10 kHz, ±9 dB @ 100 Hz (front-panel) with center detent
- AudioOutputs (2): +4 dBu 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 headroomPower AmplifierOutputs (2): Zone 1 (main): 35 W RMS (25, 70 or 100 V); Zone 2: 2 W (8 Ohms, on detachable terminal block)
- 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) mixerLevel 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 duckInputs 2 and/or 3), Zone 2 mixerLevel controls (3,Inputs 1 through 3), HD-MA35: Output impedance switch 4 or 8 OhmsAmbient Operating Environment: 0° C to 50° C Maximum; 20° C RecommendedPower Supply (included): 100 to 240 Vac, 50-60 Hz, 50 W; 24 Vdc output to amplifier chassis
- Dimensions and Weight: Height: 3.5 in.(8.89 cm); Width: 8.5 in.(21.6 cm); Depth: 6.75 in.(17.1 cm); Weight: 6 lb.(2.7 kg)Package Type: Cardboard Box
- Package Dimensions: 10.75 x 9.125 x 3.9375 in.
- Shipping Weight: 7.095 lbs.
- WEEE weight: 5.975 lbs.
- Tariff code: 8518.50.0000
GTIN:
0813721010773

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HD-MA35A - Reviews

HD-MA35A - Attachments

See HD-MA35A Specifications (PDF)

Overview

HD-MA35A - Overview

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 block; 2, unbalanced stereo summingInputs on RCA jacks
- MaximumInput Level: MicInput: -11.5 dBu; Balanced lineInput: + 19 dBu; UnbalancedInputs: + 9 dBV (+15.5 dBV, one input); (for 1% 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 forInputs 2 and/or 3, 25 dB ducking attenuation, nominal
- External RDL ModulePower Output: 24 Vdc, 100 mA maximum, ground-referencedInput level: (to cross compressor threshold equaling 23 W amplified output)
  MicInput: -50 dBu (2.5 mV), (front panel gain at max.)
  Balanced lineInput: -21 dBu (70 mV), (front panel gain at max.)
  UnbalancedInputs: -15 dBV (180 mV, front panel gain at max., bothInputs driven)
- Noise (line output): MicInput: -68 dB, Balanced lineInput: -72 dB (below compressor threshold at max gain);
  UnbalancedInputs: <-85 dB (max gain)
- Noise (amplified outputs): MicInput: -68 dB, Balanced lineInput: -72 dB (below compressor threshold at max gain);
  UnbalancedInputs: <-75 dB (max gain)
- THD+N: < 0.5% (1 kHz at compressor threshold, main amp output); < 0.25% (line output, main)
- CMRR: MicInput: > 50 dB (50 Hz to 120 Hz); Balanced lineInput: > 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: ±1.5 dB (40 Hz to 25 kHz); Balanced lineInput to line output: ±1 dB (20 Hz to 20 kHz); Unbalanced lineInput to line output: ±0.5 dB (20 Hz to 20 kHz)
- Frequency Response (Zone 1 amplifier): Constant voltage: ±3 dB (50 Hz to 18 kHz); 4/8 Ohm: ±1 dB (50 Hz to 20 kHz)
- Frequency Response (Zone 2 amplifier): 8 Ohm: ±1.5 dB (50 Hz to 20 kHz); 600 Ohm: ±1.5 dB (30 Hz to 18 kHz)
- Tone Controls: ±10 dB @ 10 kHz, ±9 dB @ 100 Hz (front-panel) with center detent
- AudioOutputs (2): +4 dBu 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 headroomPower AmplifierOutputs (2): Zone 1 (main): 35 W RMS (25, 70 or 100 V); Zone 2: 2 W (8 Ohms, on detachable terminal block)
- 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) mixerLevel 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 duckInputs 2 and/or 3), Zone 2 mixerLevel controls (3,Inputs 1 through 3), HD-MA35: Output impedance switch 4 or 8 OhmsAmbient Operating Environment: 0° C to 50° C Maximum; 20° C RecommendedPower Supply (included): 100 to 240 Vac, 50-60 Hz, 50 W; 24 Vdc output to amplifier chassis
- Dimensions and Weight: Height: 3.5 in.(8.89 cm); Width: 8.5 in.(21.6 cm); Depth: 6.75 in.(17.1 cm); Weight: 6 lb.(2.7 kg)Package Type: Cardboard Box
- Package Dimensions: 10.75 x 9.125 x 3.9375 in.
- Shipping Weight: 7.095 lbs.
- WEEE weight: 5.975 lbs.
- Tariff code: 8518.50.0000
GTIN:
0813721010773