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Home / Mixers / Radio Design Labs RU-MX4LT Professional 4 Channel Line Level Mixer with Transformer - Microphone and line output
Radio Design Labs

Radio Design Labs RU-MX4LT Professional 4 Channel Line Level Mixer with Transformer - Microphone and line output

£553.20inc. VAT
£461.00 ex. VAT
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Bought in the UK, backed in the UKWhy it matters →
  • Sourced through UK distribution
  • UK manufacturer warranty
  • UK-based engineers
  • No import duty or customs charges
  • GBP pricing, UK VAT invoices
Return within 14 days
Installation services availablePurchase orders: education customers only
7 Years Warranty Included
Key specifications
Balanced Line Inputs(4)20 kΩ balanced bridging
Balanced Line Input Level-13 to +22 dBu for +4 dBu output
Unbalanced Line Inputs (4)2 kΩ unbalanced
Unbalanced Line Input Level-25 dBV to +20 dBV for +4 dBu output; -10 dBV nominal
Gain Adjustments (4)Balanced Line: Off to 17 dB gain Unbalanced Line: Off to 27 dB gain
Output Attenuator0 dB to infinity
Frequency Response20 Hz to 30 kHz (± 0.25 dB)
THD+N< 0.01%
All 14 specifications

Description

The RU-MX4L is the ideal choice in many applications where a combination of balanced 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 RU-MX4L inputs can accept either a balanced XLR line-level input or an unbalanced line-level phono jack input. The unbalanced phono jack LINE OUTPUT from one RU-MX4L may connect to the unbalanced input of other equipment, or may be connected to the DIRECT input of another RU-MX4L or an RU-MX4 to expand mixing capabilities. The RU-MX4L 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 factory installed output isolation transformer is available by ordering the RU-MX4LT.

Key features:

• Four Channel Line-Level Audio Mixer

• XLR Balanced, Phono Jack Unbalanced Inputs

• Mic or Line XLR Output, Switchable

• Unbalanced Line Output and Direct Input

• Studio Quality, Low-Noise Performance

• Expansion Bussing Capability

• Additional Line Inputs Bussed to an RU-MX4

• Output Isolation Transformer (RU-MX4LT)

Manufacturer part number RU-MX4LT.

Key features

Balanced Line Inputs(4)

20 kΩ balanced bridging

Balanced Line Input Level

-13 to +22 dBu for +4 dBu output

Unbalanced Line Inputs (4)

2 kΩ unbalanced

Unbalanced Line Input Level

-25 dBV to +20 dBV for +4 dBu output; -10 dBV nominal

Gain Adjustments (4)

Balanced Line: Off to 17 dB gain Unbalanced Line: Off to 27 dB gain

Output Attenuator

0 dB to infinity

Frequency Response

20 Hz to 30 kHz (± 0.25 dB)

THD+N

< 0.01%

Technical specifications

Connectivity
Balanced Line Inputs(4)20 kΩ balanced bridging
Balanced Line Input Level-13 to +22 dBu for +4 dBu output
Unbalanced Line Inputs (4)2 kΩ unbalanced
Unbalanced Line Input Level-25 dBV to +20 dBV for +4 dBu output; -10 dBV nominal
Output Attenuator0 dB to infinity
Residual Noise (below +4dBu output)4 line level sources (unity gain): < -82 dB (wideband)
Outputs (2)+4 dBu 150 ohm balanced (switchable to MIC level -45 dBu); -10 dBV unbalanced
Power & Physical
Shipping Weight1.84 lbs.
General
Gain Adjustments (4)Balanced Line: Off to 17 dB gain Unbalanced Line: Off to 27 dB gain
Frequency Response20 Hz to 30 kHz (± 0.25 dB)
THD+N< 0.01%
Indicators (17)Dual-LED VU meter for each input; POWER LED; LED audio mix level meter, 0 dB = +4 dBu VU ballistic: -20 dB, -10 dB, -6 dB, -2 dB, 0 dB, +3 dB; Peak reading: +8 dB,+12 dB
Ambient Operating Environment0° C to 50° C
Power RequirementGROUND-REFERENCED, 24 Vdc @ 150 mA,

Documents

Delivery & returns

Estimated delivery 9 Sept - 13 Sept. UK mainland delivery only. Some large or made-to-order items carry longer lead times, shown on the product page.

Unused items in original packaging can be returned within 14 days of delivery — see the returns policy for how business and consumer returns differ. Faulty items are covered under manufacturer warranty and by your statutory rights.

Full delivery & returns policy

Bought in the UK, backed in the UK

  • This item is sourced through UK distribution and ships to you from within the UK, so the order never crosses a customs border.

  • The manufacturer warranty is honoured here in the UK. If something fails, you deal with us, not with an overseas seller in another time zone.

  • Our own UK-based engineers install, commission and support what we sell, and can attend site when a system needs hands on it.

  • Delivered within the UK mainland, so there is no import duty, customs charge or courier handling fee waiting for you on delivery.

  • Prices are in pounds sterling with proper UK VAT invoices, and purchase orders are accepted from approved education accounts: no currency conversion and no surprises at the door.

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Payment & security

Pay securely by card. Education customers can apply for a 30-day purchase order account.

Schools, colleges, sixth forms, universities and multi-academy trusts can order on invoice, with no card payment required. Purchase orders and credit terms are for education customers only.

All transactions are processed over an encrypted, secure checkout.

Purchase order & invoice terms

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