1
EQ-550
Natural Sound Stereo Graphic Equalizer
10 Bands of ± 12 dB EQ per Channel
10-Band Frequency Spectrum Analizer
Built-in Pink Noise Generator
Electret Condenser Microphone Supplied
Thank you for selecting the YAMAHA EQ-550 Stereo Graphic Equalizer.
CONTENTS
Safety Instructions ......................................... 1
Caution .......................................................... 2
Connections .................................................. 7
Front Panel Parts and Functions ................... 8
Operations................................................... 10
Specifications .............................................. 11
Troubleshooting ........................................... 12
IMPORTANT
Please record the serial number of this unit in the space
below.
Model:
Serial No.:
The serial number is located on the rear of the main unit.
Retain this Owner’s Manual in a safe place for future
reference.
OWNER’S MANUAL
• Explanation of Graphical Symbols
The lightning flash with arrowhead
symbol, within an equilateral triangle, is
intended to alert you 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 you
to the presence of important operating
and maintenance (servicing) instructions
in the literature accompanying the
appliance.
WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR
MOISTURE.
CAUTION
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.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
SAFETY INSTRUCTIONS
1 Read Instructions – All the safety and operating instructions
should be read before the product is operated.
2 Retain Instructions – The safety and operating instructions
should be retained for future reference.
3 Heed Warnings – All warnings on the product and in the
operating instructions should be adhered to.
4 Follow Instructions – All operating and use instructions
should be followed.
5 Cleaning – Unplug this product from the wall outlet before
cleaning. Do not use liquid cleaners or aerosol cleaners.
Use a damp cloth for cleaning.
6 Attachments – Do not use attachments not recommended
by the product manufacturer as they may cause hazards.
7 Water and Moisture – The product should not be used near
water – for example, near a bathtub, washbowl, kitchen
sink, laundry tub, in a wet basement, or near a swimming
pool, etc.
8 Accessories – Do not place this product on an unstable
cart, stand, tripod, bracket, or table. The product may fall,
causing serious injury to a child or adult, and serious
damage to the product. Use only with a cart, stand, tripod,
bracket, or table recommended by the manufacturer, or sold
with the product. Any mounting of the product should follow
the manufacturer’s instructions, and should use a mounting
accessory recommended by the manufacturer.
9 A product and cart combination should be
moved with care. Quick stops, excessive
force, and uneven surfaces may cause the
product and cart combination to overturn.
10 Ventilation – Slots and openings in the
cabinet are provided for ventilation and to ensure reliable
operation of the product and to protect it from overheating,
and these openings must not be blocked or covered. The
openings should never be blocked by placing the product on
a bed, sofa, rug, or other similar surface. This product
should not be placed in a built-in installation such as a
bookcase or rack unless proper ventilation is provided or
the manufacturer’s instructions have been adhered to.
11 Power Sources – This product should be operated only from
the type of power source indicated on the marking label. If
you are not sure of the type of power supply to your home,
consult your product dealer or local power company. For
products intended to operate from battery power, or other
sources, refer to the operating instructions.
12 Grounding or Polarization – This product may be equipped
with a polarized alternating current line plug (a plug having
one blade wider than the other). This plug will fit into the
power outlet only one way. This is a safety feature. If you are
unable to insert the plug fully into the outlet, try reversing
the plug. If the plug should still fail to fit, contact your
electrician to replace your obsolete outlet. Do not defeat the
safety purpose of the polarized plug.
13 Power-Cord Protection – Power-supply cords should be
routed so that they are not likely to be walked on or pinched
by items placed upon or against them, paying particular
attention to cords at plugs, convenience receptacles, and
the point where they exit from the product.
14 Lightning – For added protection for this product during a
lightning storm, or when it is left unattended and unused for
long periods of time, unplug it from the wall outlet and
disconnect the antenna or cable system. This will prevent
damage to the product due to lightning and power-line
surges.
15 Power Lines – An outside antenna system should not be
located in the vicinity of overhead power lines or other
electric light or power circuits, or where it can fall into such
power lines or circuits. When installing an outside antenna
system, extreme care should be taken to keep from
touching such power lines or circuits as contact with them
might be fatal.
16 Overloading – Do not overload wall outlets, extension cords,
or integral convenience receptacles as this can result in a
risk of fire or electric shock.
17 Object and Liquid Entry – Never push objects of any kind
into this product through openings as they may touch
dangerous voltage points or short-out parts that could result
in a fire or electric shock. Never spill liquid of any kind on
the product.
1
18 Servicing – Do not attempt to service this product yourself
as opening or removing covers may expose you to
dangerous voltage or other hazards. Refer all servicing to
qualified service personnel.
19 Damage Requiring Service – Unplug this product from the
wall outlet and refer servicing to qualified service personnel
under the following conditions:
a) When the power-supply cord or plug is damaged,
b) If liquid has been spilled, or objects have fallen into the
product,
c) If the product has been exposed to rain or water,
d) If the product does not operate normally by following the
operating instructions, adjust only those controls that are
covered by the operating instructions as an improper
adjustment of other controls may result in dangerous and
will often require extensive work by a qualified technician
to restore the product to its normal operation.
e) If the product has been dropped or damaged in any way,
and
f) When the product exhibits a distinct change in
performance – this indicates a need for service.
20 Replacement Parts – When replacement parts are required,
be sure the service technician has used replacement parts
specified by the manufacturer or have the same
characteristics as the original part. Unauthorized
substitutions may result in fire, electric shock, or other
hazards.
21 Safety Check – Upon completion of any service or repairs to
this product, ask the service technician to perform safety
checks to determine that the product is in proper operating
condition.
22 Wall or Ceiling Mounting – The unit should be mounted to a
wall or ceiling only as recommended by the manufacturer.
23 Heat – The product should be situated away from heat
sources such as radiators, heat registers, stoves, or other
products (including amplifiers) that produce heat.
YAMAHA ELECTRONICS CORPORATION, USA 6660 ORANGETHORPE AVE., BUENA PARK, CALIF. 90620, U.S.A.
YAMAHA CANADA MUSIC LTD. 135 MILNER AVE., SCARBOROUGH, ONTARIO M1S 3R1, CANADA
YAMAHA ELECTRONIK EUROPA G.m.b.H. SIEMENSSTR. 22-34, 25462 RELLINGEN BEI HAMBURG, F.R. OF GERMANY
YAMAHA ELECTRONIQUE FRANCE S.A. RUE AMBROISE CROIZAT BP70 CROISSY-BEAUBOURG 77312 MARNE-LA-VALLEE CEDEX02, FRANCE
YAMAHA ELECTRONICS (UK) LTD. YAMAHA HOUSE, 200 RICKMANSWORTH ROAD WATFORD, HERTS WD1 7JS, ENGLAND
YAMAHA SCANDINAVIA A.B. J A WETTERGRENS GATA 1, BOX 30053, 400 43 V
ÄSTRA FRÖLUNDA, SWEDEN
YAMAHA MUSIC AUSTRALIA PTY, LTD. 17-33 MARKET ST., SOUTH MELBOURNE, 3205 VIC., AUSTRALIA
VJ82570-2 BWWBL,b Printed in Japan
/