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D01098720A
MH-8
Headphone Amplifier
OWNER'S MANUAL
Contents
IMPORTANT SAFETY INSTRUCTIONS ........2 2 − Names and Functions of Parts ............5
Front panel ...................................................... 5
1 − Introduction .........................................4
Rear panel ....................................................... 6
Features ........................................................... 4
3 – Troubleshooting ...................................7
Included items ............
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IMPORTANT SAFETY INSTRUCTIONS CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. The lightning flash with arrowhead symbol, within equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an e
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IMPORTANT SAFETY INSTRUCTIONS 1 Read these instructions. Do not expose this apparatus to drips or splashes. • Do not place any objects filled with liquids, such • 2 Keep these instructions. as vases, on the apparatus. 3 Heed all warnings. Do not install this apparatus in a confined space • such as a book case or similar unit. 4 Follow all instructions. The apparatus draws nominal non-operating • 5 Do not use this apparatus near water. power from the AC outlet with its POWER or STAND
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1 − Introduction Thank you for your purchase of the TASCAM MH-8 NOTE Headphone Amplifier. Explanation of actions in special situation and Before connecting and using the unit, please take time supplement. to read this manual thoroughly to ensure you understand how to properly set up and connect the unit, as well as the CAUTION operation of its many useful and convenient functions. After Instructions that should be followed to avoid injury, you have finished reading this manual, please keep
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2 − Names and Functions of Parts Front panel POWER switch and indicator 11 Press to turn power ON or OFF. The indicator lights when the power is ON. Overload (OL) indicators 21 These light if the level input to this device is too high (overloading with a clipping level of –3 dB or higher). Signal (SIG) indicators 31 These light when a signal (–20 dBu or greater) is detected at an input jack. Input LEVEL knobs 41 Use to adjust the input levels. INPUT 1 and 2 activation buttons 51 Select w
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2 − Names and Functions of Parts Rear panel w DIRECT INPUT jacks o1 Power connector These direct input connectors provide direct line inputs Use the included power cord to connect the power for each channel. source. e1 FOLDBACK output connectors CAUTION These output the input signals (INPUT 1 and 2) When using this unit, always use the included power unchanged. cord. Moreover, do not use the included power cord NOTE with any other equipment. Misuse of a power cord could cause malfunct
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3 – Troubleshooting If you are having trouble with the operation of this unit, please try the following before seeking repair. If these measures do not solve the problem, please contact the store where you bought the unit or a TASCAM Service Center. Power will not turn ON. ª Confirm that the power plug is securely inserted. • No sound is output. ª Are the headphones connected correctly? • Are the input sources connected correctly? • Are the input selections correct? • Are the input
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4 – Specifications Audio inputs and outputs Audio performance INPUT 1 and 2 Frequency response 20 Hz - 50 kHz/100 mW 32Ω, ±3 dB (PHONES outputs) Connector XLR-3-31 (1: GND, 2: HOT, 3: COLD) 10 Hz - 100 kHz, ±3 dB (FOLDBACK outputs) Input impedance 56 kΩ S/N ratio 85 dB or greater (PHONES Nominal input level +4 dBu (1.23 V) outputs, A-WTD, 20 kHz LPF) Maximum input level +24 dBu (12.3 V) 90 dB or greater (FOLDBACK outputs, A-WTD, 20 kHz LPF) INPUT 1 THD 0.05% or less (PHONES outputs, Conn
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10.5 mm 31.8 mm 280 mm 14 mm 4 – Specifications Dimensional drawings 41.1 mm 432.6 mm 44 mm 434.2 mm 0.9 mm 482.6 mm 465 mm • Illustrations and other depictions may differ in part from the actual product. • Specifications and external appearance may be changed without notification to improve the product. TASCAM MH-8 9
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4 – Specifications Block diagram INPUTS 2 R INPUTS 2 R INPUTS 2 L INPUTS 2 L INPUTS 1 R INPUTS 1 R INPUTS 1 L INPUTS 1 L TASCAM MH-8 10 MAX +8dBu +4dBu -2dBu INPUT 1 Max +22dBu PHONES 1 LEVEL - L INPUT 1 LEVEL - L XLR - L J101 1/2 1/2 1/2 1/2 1/2 U108 U102 U101 U301 U303 +4dBu 1/2 U302 TRS-L(MONO) Max 250mW@32 OHM J102 1/2 TRS-L(MONO) J301 DIR 1 U107 PHONES 1 LED -2dBu COMPARATOR U304 DIRECT INPUTS 1 INPUTS 1 PHONES 1 1/2 1/2 J303 U305 1/2 TRS - R SIG OL LOGARITHMIC AMP. J103 U107 TRS-R J30
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4 – Specifications Level diagram TASCAM MH-8 11 +4dBu -2dBu MAX +8dBu INPUT 1 LEVEL - L INPUT 1 XLR - L 1/2 1/2 1/2 U101 U108 U102 FOLDBACK - L U103 INPUT 1 LED COMPARATOR TRS - L 1/2 1/2 1/2 U105 U106 U107 OL LOGARITHMIC SIG INPUTS 1 AMP. 1/2 TRS - R U107 Max +22dBu PHONES 1-8 LEVEL - L FOLDBACK - R U104 1/2 1/2 INPUT 1 U301/U401/U501/U601 U303/U403/U503/U603 LEVEL - R U703/U803/U903/U003 XLR - R U102 U701/U801/U901/U001 1/2 1/2 1/2 U202 U108 -2dBu -2dBu INPUT 2 MAX +8dBu -10dBv Max 250m
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MH-8 TEAC CORPORATION www.tascam.jp Phone: +81-42-356-9143 1-47 Ochiai, Tama-shi, Tokyo 206-8530, Japan TEAC AMERICA, INC. www.tascam.com Phone: +1-323-726-0303 7733 Telegraph Road, Montebello, California 90640 USA TEAC CANADA LTD. www.tascam.com Phone: +1905-890-8008 Facsimile: +1905-890-9888 5939 Wallace Street, Mississauga, Ontario L4Z 1Z8, Canada TEAC MEXICO, S.A. de C.V. www.teacmexico.net Phone: +52-55-5010-6000 Río Churubusco 364, Colonia Del Carmen, Delegación Coyoacán, CP 0410
