Rane MH 4 Operator's Manual
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Rane MH 4 Operator's Manual

Mojo series headphone amplifier
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OPERATORS MANUAL

QUICK START

Conect the output from any stereo source such as a mixer or tape deck, and plug the left and right inputs into the
respective INPUT jacks. The Inputs accept balanced or unbalanced sources. Just plug them in. This source is now routed to
each of the four Outputs.
For a single mono source feeding all headphones, connect it to either one of the INPUT jacks and engage the STEREO/
MONO switch. Set the CHANNEL LEVEL controls for individual headphone levels.
Never connect anything except a Rane power supply to the thing that looks like a telephone jack on the rear of the
unit. This is an AC input and requires special attention if you do not have a power supply exactly like the one originally
packed with your unit. See the full explanation of the power supply requirements elsewhere in this manual.
WEAR PARTS: This product contains no wear parts.

HEADPHONE AMPLIFIER

MH 4
Manual-1

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Summary of Contents for Rane MH 4

  • Page 1: Headphone Amplifier

    MONO switch. Set the CHANNEL LEVEL controls for individual headphone levels. Never connect anything except a Rane power supply to the thing that looks like a telephone jack on the rear of the unit. This is an AC input and requires special attention if you do not have a power supply exactly like the one originally packed with your unit.

  • Page 2: Stereo/Mono Switch

    AC center-tapped transformer only. This is power supply which does not ground the not a telephone jack. Never use a chassis through the line cord. The MH 4 can power supply with your unit other than be grounded either to another chassis which...

  • Page 3: Input Jacks

    Your basic, straightforward power switch. ¼" TRS stereo headphone plugs. headphones as they are driven from the When the yellow LED is lit, the MH 4 is INPUTS. It’s always a good idea to keep this ready to go. control turned down before plugging in a pair of phones, then turn it up slowly.
  • Page 4 Sensitivity dB is measured sound pressure level with 110 dB-SPL). For example, if your hi-fi amp is rated at 65 1 mW of power. The MH 4 Max Power mW column is typical watts, then you would need only 65 mW to drive comparable continuous average power, 20 Hz-20 kHz, with THD less than headphones.
  • Page 5 Impedance Sensitivity MH 4 Max MH 4 Max Manufacturer Model (ohms) (dB) Power (mW) SPL (dB) K141M K240M, K240DF K270S K301 K401, K501 Audio-Technica ATH-COM1, ATH-COM2, ATH-908 ATH-910 ATH-P5 ATH-M40 ATH-D40 ATH-M2X, ATH-M3X Beyerdynamic DT150 DT211, DT311 DT250 DT411 DT 531...

  • Page 6: Sound System Interconnection

    MH 4 (down the right side.) An “off- all unbalanced connections. Your audio dealer can recom- the-shelf” cable may be available or modifiable. Soldering mend such a transformer.
  • Page 7 VARIOUS MH 4 INPUT CABLE ASSEMBLIES Manual-7...
  • Page 8 Since Q and bandwidth are interrelated, the terms are fully interchangeable. ©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5098 TEL (425)355-6000 FAX (425)347-7757 WEB http://www.rane.com Manual-8 All features & specifications subject to change without notice. 102942...

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