Specifications

ManualsBrandsMB QUART ManualsHeadphoneHeadphone & Headset

Manual-1

OPERATORS MANUAL

MH 4

HEADPHONE CONSOLE

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.

Summary of content (8 pages)

PAGE 1
OPERATORS MANUAL MH 4 HEADPHONE CONSOLE 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.
PAGE 2
STEREO/MONO switch OVERLOAD indicators Converts the INPUTS from stereo to mono so that a single input cable drives both sides of the headphones. In some instances a STEREO program may be confusing for live monitoring purposes, and switching to MONO improves intelligibility by summing the Left and Right signals. The red LEDs light when the input signal exceeds the MH 4’s output capability (3 dB below maximum). Occasional flickering is acceptable.
PAGE 3
PHONE Output jacks Individual LEVEL controls POWER switch and LED These stereo ¼" TRS jacks accept standard ¼" TRS stereo headphone plugs. These control the volume for each set of headphones as they are driven from the INPUTS. It’s always a good idea to keep this control turned down before plugging in a pair of phones, then turn it up slowly. Your basic, straightforward power switch. When the yellow LED is lit, the MH 4 is ready to go.
PAGE 4
UNDERSTANDING HEADPHONE POWER REQUIREMENTS HEADPHONE SENSITIVITY Headphone manufacturers specify a “sensitivity” rating for their products that is very similar to loudspeaker sensitivity ratings. For loudspeakers, the standard is to apply 1 watt and then measure the sound pressure level (SPL) at a distance of 1 meter. For headphones, the standard is to apply 1 milliwatt (1 mW = 1/1000 of a watt) and then measure the sound pressure level at the earpiece (using a dummy head with built-in microphones).
PAGE 5
Manufacturer AKG Audio-Technica Beyerdynamic Fostex Grado Hosa Koss MB Quart Sennheiser Sony Stanton Technics Telex Yamaha Model K141M K240M, K240DF K270S K301 K401, K501 ATH-COM1, ATH-COM2, ATH-908 ATH-910 ATH-P5 ATH-M40 ATH-D40 ATH-M2X, ATH-M3X DT150 DT211, DT311 DT250 DT411 DT 531 DT431, DT331 DT770PRO, DT990PRO DT801, DT811, DT511 DT901, DT911 T-5 T-7 T-20 T-40 SR 325 HDS-701 A/250, A/200, A/130, TD/80 R/200 R/100, R/45 R/90, HD/2, SB/15 R/80, R/35S, R/20, Porta Pros R/70B, R/55B, SB/50, SB/35 R
PAGE 6
MOJO GLOSSARY balanced line The recommended method of interconnecting audio equipment. A balanced line requires three conductors: a twisted-pair for the signal (positive and negative) and an overall shield. The shield must be tied to the chassis at both ends for hum-free interconnect. bandwidth Abbr. BW The numerical difference between the upper and lower -3 dB points of an audio band. clipping What occurs when a unit tries to produce a signal larger than its power supply.
PAGE 7
SOUND SYSTEM INTERCONNECTION Rane’s policy is to accommodate rather than dictate. However, this document contains suggestions for external wiring changes that should ideally only be implemented by trained technical personnel. Safety regulations require that all original grounding means provided from the factory be left intact for safe operation. No guarantee of responsibility for incidental or consequential damages can be provided.
PAGE 8
VARIOUS MH 4 INPUT CABLE ASSEMBLIES ©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.