Tascam MH-8 User Manual
MH-8
Headphone Amplifier
OWNER'S MANUAL
D01098720A
Contents
IMPORTANT SAFETY INSTRUCTIONS ........2
1 − Introduction .........................................4
Features ........................................................... 4
Included items ................................................. 4
About this manual .......................................... 4
Trademarks ...................................................... 4
Precautions and notes for placement
and use ............................................................ 4
Cleaning the unit ............................................ 4
2 − Names and Functions of Parts ............5
Front panel ...................................................... 5
Rear panel ....................................................... 6
3 – Troubleshooting ................................... 7
4 – Specifications ........................................8
Audio inputs and outputs .............................. 8
Audio performance ....................................... 8
Dimensional drawings .................................... 9
Block diagram ............................................... 10
Level diagram ................................................ 11
2
TASCAM MH-8
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 equilateral triangle is intended to alert the user to
the presence of important operating and maintenance (servicing) instructions in the
literature accompanying the appliance.
This appliance has a serial number located on the rear
panel. Please record the model number and serial
number and retain them for your records.
Model number
Serial number
For U.S.A.
TO THE USER
This equipment has been tested and found to comply
with the limits for a Class A digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful
interference when the equipment is operated in a
commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and,
if not instal led and used i n accordance with the
instruction manual, may cause harmful interference to
radio communications.
Operation of this equipment in a residential area is
likely to cause harmful interference in which case the
user will be required to correct the interference at his
own expense.
CAUTION
Chang es or modifications to this equipme nt not
expressly approved by TEAC CORPORATION for
compliance could void the user's authority to operate
this equipment.
WARNING: TO PREVENT FIRE OR
SHOCK HAZARD, DO NOT EXPOSE
THIS APPLIANCE TO RAIN OR
MOISTURE.
CE Marking Information
a) Applicable electromagnetic environment: E4
b) Peak inrush current: 9.124 A
Norwegian:
Produkter med Klasse I konstruksjon er utstyrt
med en ekstern strømforsyning med en 3-pins
tilkoblingskontakt. Det er viktig at denne kontakten
tilkobles en jordet stikk-kontakt.
Swedish:
Produkter med Klass 1 konstruktion är utrustad
med strömförsörjning med jordad 3 stifts strömadapter. Sladdkontakt till denna måste kopplas till en
AC adapter med skyddande jord.
Finnish:
Tuotteen suojausluokka on I (suojamaadoitettu).
In North America use only on 120V supply.
Tuote on kytkettävä suojamaadoitettuun pistorasiaan.
TASCAM MH-8
3
IMPORTANT SAFETY INSTRUCTIONS
1 Read these instructions.
2 Keep these instructions.
3 Heed all warnings.
4 Follow all instructions.
5 Do not use this apparatus near water.
6 Clean only with dry cloth.
7 Do not block any ventilation openings. Install in
accordance with the manufacturer's instructions.
8 Do not inst al l nea r any he a t sou r c es su c h
as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce
heat.
9 Do not defeat the safety purpose of the polarized
or grounding-type plug. A polarized plug has two
blades with one wider than the other. A grounding
type plug has two blades and a third grounding
prong. The wide blade or the third prong are
provided for your safety. If the provided plug does
not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
10 Protect the power cord from being walked on
or pinched particularly at plugs, convenience
receptacles, and the point where they exit from
the apparatus.
11 Only use attachments/accessories specified by
the manufacturer.
12 Use only with the cart, stand, tripod, bracket, or
table specified by the manufacturer, or sold with
the apparatus. When a cart is used, use caution
when moving the cart/apparatus combination to
avoid injury from tip-over.
Do not expose this apparatus to drips or splashes.
•
Do not place any objects filled with liquids, such
•
as vases, on the apparatus.
Do not install this apparatus in a confined space
•
such as a book case or similar unit.
The appar a tu s draws nominal non-op e r ating
•
power fr o m th e AC outlet with its POWER or
STANDBY/ON switch not in the ON position.
The apparatus should be located close enough
•
to the AC outlet so that you can easily grasp the
power cord plug at any time.
The mains plug is used as the disconnect device,
•
the di sc onn ect d e vi ce sha ll re mai n re adil y
operable.
Products with Class I construction are equipped
•
wi th a power su p p ly cord tha t has a 3-prong
grounding plug. The cord of such a product must
be plugged into an AC outlet that has a protective
grounding connection.
If the product uses batteries (including a battery
•
pack or installed batteries), they should not be
exposed to sunshine, fire or excessive heat.
CAUTION for products that use replaceable lithium
•
batteries: there is danger of explosion if a battery
is replaced with an incorrect type of ba t tery.
Replace only with the same or equivalent type.
Caution should be taken when using earphones or
•
headphones with the product because excessive
sound pressure (volume) from earphones or headphones can cause hearing loss.
If you are experiencing problems with this product,
•
contact TEAC for a service referral. Do not use the
product until it has been repaired.
RACK-MOUNTING THE UNIT
ª
Use the supplied rack-mounting kit to mount the unit in a
standard 19-inch rack, as shown below.
13 Unplug this apparatus during lightning storms or
when unused for long periods of time.
14 Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has
been damaged in any way, such as power-supply
cord or plug is damaged, liquid has been spilled
or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture,
does not operate normally, or has been dropped.
Remove the feet of the unit before mounting.
NOTE
Leave 1U of space above the unit for ventilation.
•
Allow at least 10 cm (4 in) at the rear of the unit for
•
ventilation.
4
TASCAM MH-8
1 − Introduction
Thank you for your purchase of the TASCAM MH-8
Headphone Amplifier.
Before connecting and using the unit, please take time
to read this manual thoroughly to ensure you understand
how to properly set up and connect the unit, as well as the
operation of its many useful and convenient functions. After
you have finished reading this manual, please keep it in a
safe place for future reference.
You can also download the Owner's Manual from the
TASCAM web site (http://www.tascam.com).
Features
Rack-mountable 1U size
•
8 headphone outputs
•
Maximum output of 250 mW + 250 mW (at 32Ω)
•
2 pairs of inputs
•
INPUT 1 on XLR connectors or TRS phone jack inputs
•
INPUT 2 on XLR connectors or RCA pin jack inputs
•
Each headphone output channel also has direct inputs
•
Every input and output channel has an overload indica-
•
tor and a signal indicator
Ground lift switch allows signal grounding to be turned
•
ON or OFF for all channels at the same time
NOTE
Explanation of actions in special situation and
supplement.
CAUTION
Instructions that should be followed to avoid injury,
damage to the unit or other equipment.
Trademarks
TASCAM is a trademark of TEAC Corporation, regis-
•
tered in the U.S. and other countries.
Other company names, product names and logos in this •
document are the trademarks or registered trademarks of
their respective owners.
Precautions and notes for placement and use
The operating temperature should be between 5°C and
•
35°C (41°F and 95°F).
Make sure that the unit is mounted in a level position for
•
correct operation.
Do not place any object on the unit for heat dissipation.
•
Avoid installing this unit on top of any heat-generating
•
electrical device such as a power amplifier.
Included items
The included items are listed below.
Take care when opening the package not to damage the
items. Keep the package materials for transportation in the
future.
Please contact the store where you purchased this unit if
any of these items are missing or have been damaged during transportation.
Main unit (MH-8)• ............................................................1
Power cord• .......................................................................1
A rack-mounting screw kit• ..............................................1
A warranty card• ..............................................................1
Owner's manual (this manual)
•
........................................1
About this manual
In this manual, we use the following conventions:
The names of keys and controls are given in the follow-
•
ing typeface: POWER.
Additional information is introduced in the styles below
•
when needed:
Cleaning the unit
To clean the unit, wipe it gently with a soft dry cloth. Do
not wipe with chemical cleaning cloths, benzene, paint
thinner, ethyl alcohol or other chemical agents to clean the
unit as they could damage the surface.
Loading...