Home Page Product listing by category Reference materials, engineering tables, downloads, archives, terms and conditions Product Applications Introduction to application-specific modules A collection of technical tips about our products, troubleshooting and general RDL knowledge Contact Radio Design Labs Employment opportunities Dealer Login Radio Design Labs Banner banner.php




Stay Connected RDL on Facebook RDL on Twitter RDL on YouTube RDL RSS Feed


PRODUCT CATEGORIES > AUDIO > MIXING >
EZ Products Banner

Professional 4 Channel Microphone/Line Mixer with Phantom Power - Microphone and line output

RU-MX4 Professional 4 Channel Microphone/Line Mixer with Phantom Power - Microphone and line output

Radio Design Labs - Professional 4 Channel Microphone/Line Mixer with Phantom Power - Microphone and line output



  • Four Channel Audio Mixer with Expansion Capability
  • XLR Microphone Inputs, Phono Jack Line Inputs
  • Switchable 24 V Phantom for Each Mic Input
  • Mic or Line XLR Output, Switchable
  • Unbalanced Line Output and Direct Input
  • Integral Compressor/Limiter, Switchable
  • Studio‑Quality, Low‑Noise Performance

The RU‑MX4 is the ideal choice in many applications where a combination of balanced mic and/or unbalanced line‑level signals needs to be mixed. Balanced connections use XLR connectors. Unbalanced signals are coupled through phono jacks. Each of the four inputs can accept either a balanced XLR mic or an unbalanced line‑level input. 24 V phantom is individually switch selectable for each mic input. The unbalanced phono jack LINE OUTPUT from one RU‑MX4 may connect to the unbalanced input of other equipment, or may be connected to the DIRECT input of another RU‑MX4 to expand mixing capabilities. Up to 3 RU‑MX4 mixers may be rack mounted in a single rack unit using an RDL RU‑RA3HD rack adapter. The RU‑MX4 provides one balanced output, switchable for mic or line level. Audio levels are adjustable on the front panel. Each input channel is equipped with a front‑panel dual‑LED VU meter that follows standard VU ballistics. The final mix is displayed on an LED string VU meter featuring a visually comfortable arc motion. A rear‑panel switch allows the soft‑knee compressor to be switched in or out. A factory installed output isolation transformer is available by ordering the RU‑MX4T.

Radio Design Labs - dcf100mb

Typical Performance:

Microphone Inputs (4):

2 kΩ balanced, switchable 24 V phantom (IEC 1938: 1996‑12)

Mic Input Level for +4 dBu output:

‑58 to –20 dBu (PHANTOM OFF or ONHI gain); ‑41 to –4 dBu (PHANTOM ON LO gain)

Line Inputs (4):

2 kΩ unbalanced

Line Input Level for +4 dBu out:

‑25 dBV to +20 dBV, ‑10 dBV nominal

Gain Adjustments (5):

Mic: Off to 62 dB gain (PHANTOM OFF ONHI gain);
Off to 46 dB gain (PHANTOM ON LO gain);
Line: Off to 27 dB gain

Output Attenuator:

0 dB to infinity

Frequency Response:

Mic: 80 Hz to 30 kHz (+/‑ 1.5 dB),
<‑10 dB @ 20 Hz (integral high‑pass filter)
Line: 20 Hz to 30 kHz (+/‑ 0.25 dB)

THD+N:

Mic: < 0.1% (80 Hz to 20 kHz)
Line: < 0.02%

Residual Noise (wideband,
below +4 dBu output):

Unity Gain:

< ‑84 dB (4 Line level sources)

40dB Gain, Phantom on:

Mic: ‑79 dB; < ‑73 dB (All 4 mic level sources)

50dB Gain:

Mic: ‑79 dB; < ‑73 dB (All 4 mic level sources)

60dB Gain:

Mic: ‑70 dB; < ‑64 dB (All 4 mic level sources)

Outputs (2):

+4 dBu 150 Ω bal. (switchable to MIC level ‑45 dBu);
‑10 dBV unbalanced

Balanced Output Coupling:

Elec. bal. (RU‑MX4) or 600 ΩTransformer (RU‑MX4T)

Indicators (18):

Dual‑LED VU meter for each input;
COMP/LIMIT active LED; POWER LED; LED audio mix meter,
0 dB = +4 dBu
VU (dB): ‑20, ‑10, ‑6, ‑2, 0, +3; Peak Reading (dB): +8,+12

Power Requirement:

GROUND‑REFERENCED, 24 Vdc @ 150 mA

Ambient Operating Environment:

0° C to 50° C


Four Channel Audio Mixer with Expansion Capability, XLR Microphone Inputs, Phono Jack Line Inputs, Switchable 24 V Phantom for Mic Input, Mic Line XLR Output, Switchable, Unbalanced Line Output Direct Input, Integral Compressor/Limiter, Switchable, Studio-Quality, Low-Noise Performance, The RU-MX4 ideal choice in many applications where combination of balanced mic and/or unbalanced line-level signals needs to mixed Balanced connections use XLR connectors Unbalanced signals coupled through phono jacks of four inputs can accept either balanced XLR mic an unbalanced line-level input 24 V phantom individually switch selectable mic input unbalanced phono jack LINE OUTPUT from one RU-MX4 connect to unbalanced input of other equipment, connected to DIRECT input of another RU-MX4 to expand mixing capabilities Up to 3 RU-MX4 mixers rack mounted in single rack unit using an RDL RU-RA3HD rack adapter RU-MX4 provides one balanced output, switchable mic line level Audio levels adjustable front panel input channel equipped front-panel dual-LED VU meter that follows standard VU ballistics final mix displayed an LED string VU meter featuring visually comfortable arc motion rear-panel switch allows soft-knee compressor to switched in out factory installed output isolation transformer available ordering RU-MX4T, format converter Data/Installation

Mounting Accessories:

19" Rack Mount for 3 RACK-UP Series ProductsRU-RA3
19" Rack Mount for 3 RACK-UP Series Products

19" Rack Mount for 3 RACK-UP or MAX RACK-UP ProductsRU-RA3HD
19" Rack Mount for 3 RACK-UP or MAX RACK-UP Products

Single Wide Enclosure - RACK-UP MountsUC-1
Single Wide Enclosure - RACK-UP Mounts

Double Wide Enclosure - RACK-UP MountsUC-2
Double Wide Enclosure - RACK-UP Mounts

Mounting Bracket for RACK-UP SeriesRU-BR1
Mounting Bracket for RACK-UP Series

RACK-UP DIN Rail AdapterDRA-35R
RACK-UP DIN Rail Adapter

Related Products:

RU-MX4L
Professional 4 Channel Line Level Mixer - Microphone and line Output

EZ-MX4L
Stereo Line-Level Audio Mixer - 4X1

EZ-MX4ML
Mic and Stereo Line Audio Mixer - 4X1

RU-MX5ML
5 Channel Mic/Line Audio Mixer with Phantom Power

FP-MX4
4 Channel Audio Mixer - Microphone or line input and output

RU-MX5
5 Channel Audio Mixer with Phantom Power - Microphone or line input, microphone or line output

ST-UMX3
3x1 Universal Audio Mixer - 3 microphone or line inputs x 1 microphone or line output

FP-MX3R
Remote Controlled Line-Level Mixer

Home
Products
Reference
Applications
Introduction
Tech Tips
Contact us
Employment
Login
Sitemap

Copyright © 2010 Radio Design Labs, Inc. RDL, Radio Design Labs, the RDL logo, STICK-ON, RACK-UP and the Rack-Up logo are registered trademarks of Radio Design Labs, Inc. Flat-Pak, RCX, SourceFlex, SupplyFlex, Sure-Lok, TX, ULTRASTYLE, and Specialists in Practical Precision Engineering are trademarks of Radio Design Labs, Inc. All other trademarks are the property of their respective owners. Typical Performance reflects product at publication time exclusive of EMC data, if any, supplied with product. Date last modified: June 29 2010

...