- Description
Details
The RDL HD-MA35 Mixer Amplifier with Power Supply 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 kΩ controls. This output drives 4 Ω or 8 Ω speakers. The output impedance is switch-selectable on the rear panel. The Zone 2 amplifier output drives an 8 Ω speaker and/or 600 Ω telephone equipment. The HD-MA35A has all the features of the HD-MA35 except its 35 W (Zone 1) amplifier provides a constant voltage output (25 V, 70 V or 100 V) instead of a low impedance speaker output. The HD-MA35 is engineered and manufactured in the U.S.A.
The HD-MA35 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 Ω speaker. The Zone 2 section includes a 2 W amplifier and a 600 Ω transformer-balanced MOH output.
The HD-MA35 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.
- Features
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
- Specification
Amplifier Zones (2) Zone 1 (Main): 35 W RMS, front-panel mixer (user controls) Amplifier Zones (2) Zone 2: 2 W RMS (8 Ohms), rear-panel mixer (trimmers) Audio Inputs (3) Balanced, mic or line switch selectable on terminal block Audio Inputs (3) 2, unbalanced stereo summing inputs on RCA jacks Maximum Input Level Mic Input: -11.5 dBu; Balanced line input: + 19 dBu; Maximum Input Level Unbalanced Inputs: + 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 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 Mic Input: -50 dBu (2.5 mV), (front panel gain at max.) Input level Balanced line input: -21 dBu (70 mV), (front panel gain at max.) Input level Unbalanced Inputs: -15 dBV (180 mV, front panel gain at max., both inputs driven) Noise (line output) Mic input: -68 dB, Balanced line input: -72 dB (below compressor threshold at max gain); Noise (line output) Unbalanced Inputs: <-85 dB (max gain) Noise (amplified outputs) Mic input: -68 dB, Balanced line input: -72 dB (below compressor threshold at max gain); Noise (amplified outputs) Unbalanced Inputs: <-75 dB (max gain) THD+N < 0.5% (1 kHz at compressor threshold, main amp output); < 0.25% (line output, main) CMRR: Mic input > 50 dB (50 Hz to 120 Hz); Balanced line input: > 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 line to line output: ±1 dB (20 Hz to 20 kHz) Frequency Response (mixer) Unbalanced line input to line output: ±0.5 dB (20 Hz to 20 kHz) Frequency Response (Zone 1 amplifier) ±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 Audio Outputs (2) +4 dBu nominal (1.23 V), balanced, terminal block (FLAT) Audio Outputs (2) 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, <1% THD+N): 35 W RMS (4 Ohms) Power Amplifier Outputs (2) 32 W (8 Ohms) on detachable terminal block (switch-selectable 4 or 8 Ohm impedance) Power Amplifier Outputs (2) Zone 2: 2 W (8 Ohms, on detachable terminal block) Indicators (6) Front-panel: Signal present (3; 1 per input, green) Indicators (6) Compressor activity (red), Power (bright=on, dim=standby, blue) Indicators (6) Rear-panel: Ducking/muting threshold (yellow) VCA Zone 1 (main) master level, 0 to 10 Vdc control, detachable terminal block Front-panel controls (6) Zone 1 (main) mixer level controls (3, inputs 1 through 3) Front-panel controls (6) EQ (2, bass and treble), Power (latching pushbutton, on/standby) Ambient Operating Environment 0° C to 50° C Maximum; 20° C Recommended Power Supply (included) 100 to 240 Vac, 50-60 Hz, 50 W; 24 Vdc output to amplifier chassis Dimensions (H x W x D) 3.5" (88.9 mm) x 8.5" (216 mm) x 6.75 in (171 mm) Package Type Cardboard Box Package Dimensions 10.75" (273.05 mm) x 9.125" (231.775 mm) x 3.9375" (100.0125 mm) Shipping Weight 5.08 lbs (2.304 kg) - Reviews
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