Roland SN- 700 User manual

| Roland’
NOISE/HUM ELIMINATOR
SN- 700
Owner's Manual
[(O
Rotend
SNF7E0
=e
pee
tran
ae
ee
ha

CAUTION
RISK OF ELECTRIC SHOCK
ATTENTION. risque be cHoc ELECTRIQUE NE PAS QUVRIR
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 an
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.
A
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 product.
INSTRUCTIONS PERTAINING TO A RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS.
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
WARNING - When using electric products, basic precautions should always be followed, including the following:
1. Read all the instructions before using the product.
2. Do not use this product near water — for example, near a
bathtub, washbowl, kitchen sink, in a wet basement, or near
a swimming pool, or the like.
3. This product should be used only with a cart or stand that is
recommended by the manufacturer.
4, This product, either alone or in combination with an amplifier
and headphones or speakers, may be capable of producing
sound levels that could cause permanent hearing loss. Do
not operate for a long period of time at a high volume level
or at a level that is uncomfortable. If you experience any
hearing loss or ringing in the ears, you should consult an
audiologist.
5. The product should be located so that its location or position
does not interfere with its proper ventilation.
6. The product should be located away from heat sources such
as radiators, heat registers, or other products that produce
heat.
. The product should be connected to a power supply only of
the type described in the operating instructions or as marked
on the product.
N
8. The power-supply cord of the product should be unplugged
from the outlet when left unused for a long period of time.
9. Care should be taken so that objects do not fall and liquids
are not spilled into the enclosure through openings.
10.The product should be serviced by qualified service
personnel when:
A. The power-supply cord or the plug has been damaged; or
B. Objects have fallen, or liquid has been spilled onto the
product; or
C. The product has been exposed to rain; or
D. The product does not appear to operate normally or
exhibits a marked change in performance; or
E. The product has been dropped, or the enclosure
damaged.
11.Do not attempt to service the product beyond that described
in the user-maintenance instructions. All other servicing
should be referred to qualified service personnel.
For the USA
This product may be equipped with a polarized line plug (one blade wider than the other) . This is a safety feature. If you
are unable to insert the plug into the outlet, contact an electrician to replace your obsolete outlet. Do not defeat the safety
purpose of the plug.
For Polarized Line Plug
CAUTION:
For Canada
TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT, FULLY INSERT.
ATTENTION: pour éviter Les CHOCS ELECTRIQUES, INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE
DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU’ AU FOND.
For the U.K.
IMPORTANT: THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE.
BLUE: NEUTRAL
BROWN: LIVE
As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying
the terminais in your plug, proceed as follows:
The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.
The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.
Under no circumstances must either of the above wires be connected to the garth terminal of a three pin plug.

USING THE UNIT SAFELY
INSTRUCTIONS FOR THE PREVENTION OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS
About A\WARNING and A\CAUTION Notices
Used for instructions intended to alert
the user to the risk of death or severe
injury should the unit be used
improperly.
Z\WARNING
Used for instructions intended to alert
the user to the risk of injury or material
damage should the unit be used
improperly.
Z\ CAUTION
* Material damage refers to damage or
other adverse effects caused with
respect to the home and all its
furnishings, as well to domestic
animals or pets.
Z\WARNING
¢ Before using this unit, make sure to read the
instructions below, and the Owner's Manual.
A
®
©
¢ Do not open or perform any internal modifications
on the unit.
* Do not attempt to repair the unit, or replace parts
within it (except when this manual provides
ees instructions directing you to do so). Refer
all servicing to your dealer, or qualified Roland
service personnel.
* Never use or store the unit in places that are:
¢ Subject to temperature extremes (e.g., direct
sunlight in an enclosed vehicle, near a heating
duct, on top of heat-generating equipment); or
are
¢ Damp (e.g., baths, washrooms, on wet floors);
or are
¢ Humid; or are
¢ Dusty; or are
¢ Subject to high levels of vibration.
* This unit should be used only with a rack or stand
that is recommended by Roland.
¢ When using the unit with a rack or stand
recommended by Roland, the rack or stand must
be carefully placed so it is level and sure to remain
stable. If not using a rack or stand, you still need
to make sure that any location you choose for
placing the unit provides a level surface that will
properly support the unit, and keep it from
wobbling.
* The unit should be connected to a power supply
only of the type described in the operating
instructions, or as marked on the unit.
* Avoid damaging the power cord. Do not bend it
excessively, step on it, place heavy objects on it,
etc. A damaged cord can easily become a shock or
fire hazard. Never use a power cord after it has
been damaged.
About the Symbols
The A symbol alerts the user to important instructions
or warnings.The specific meaning of the symbol is
determined by the design contained within the
triangle. In the case of the symbol at left, it is used for
general cautions, warnings, or alerts to danger.
The © symbol alerts the user to items that must never
be carried out (are forbidden). The specific thing that
must not be done is indicated by the design contained
within the circle. In the case of the symbol at left, it
means that the unit must never be disassembled.
The @ symbol alerts the user to things that must be
carried out. The specific thing that must be done is
indicated by the design contained within the circle. In
the case of the symbol at left, it means that the power-
cord plug must be unplugged from the outlet.
Q
* This unit, either alone or in combination with an
amplifier and headphones or speakers, may be
capable of producing sound levels that could
cause permanent hearing loss. Do not operate for
a long period of time at a high volume level, or at
a level that is uncomfortable. If you experience
any bens loss or ringing in the ears, you should
immediately stop using the unit, and consult an
audiologist.
* Do not allow any objects (e.g., flammable material,
coins, pins); or liquids of any kind (water, soft
drinks, etc.) to penetrate the unit.
* Protect the unit from strong impact.
(Do not drop it!)
Do not force the unit's power-supply cord to share
an outlet with an unreasonable number of other
devices. Be especially careful when using
extension cords—the total power used by all
devices you have connected to the extension cord’s
outlet must never exceed the power rating
(watts /amperes) for the extension cord. Excessive
loads can cause the insulation on the cord to heat
up and eventually melt through.
Before using the unit in a foreign country, consult
with your dealer, or qualified Roland service
personnel.
AN

/\ CAUTION Z\ CAUTION )
* The unit should be located so that its location or
position does not interfere with its proper A\
ventilation.
¢ Always grasp only the plug on the power-supply
cord when plugging into, or unplugging from an
outlet.
* Try to prevent cords and cables from becoming
entangled. Also, all cords and cables should be ZN
placed so they are out of the reach of children.
© Never climb on top of, nor place heavy objects on SO
the unit.
¢ Never handle the power cord or its plug with wet
hands when plugging into, or unplugging from,
an outlet.
¢ Before moving the unit, disconnect the power plug
from the outlet, and pull out all cords from
external devices.
* Before cleaning the unit, turn off the power and
unplug the power cord from the outlet (p. 9).
¢ Whenever you suspect the possibility of lightning
in your area, pull the plug on the power cord out
of the outlet.

Thank you for purchasing the Roland SN-700 Noise/Hum Eliminator.
Before
using
this
unit,
carefully
read
the
sections
entitled:
"MPORTANT
SAFETY
INSTRUCTIONS"
(p.
2),
"USING
THE
UNIT
SAFELY"
(p.
3
-
4),
and
"IMPORTANT
NOTES"
(p.
6).
These
sections
provide
important
information
concerning
the
proper
operation
of
the
unit.
Additionally,
in
order
to
feel
assured
that
you
have
gained
a
good
grasp
of
every
feature
provided
by
your
new
unit,
this
manual
should
be
read
in
its
entirety.
The
manual
should
be
saved
and
kept
on
hand
as
a
convenient
reference.
Main features
The combination of noise canceling and hum canceling
effectively reduces unwanted interference such as the
noise generated by instruments and lighting, hum in-
duced by power supplies, hum picked up by micro-
phones and guitars, and even hiss noise from cassette
tapes. The SN-700 is a powerfully effective tool for live PA
productions and studio recording.
Since noise canceling divides the audible spectrum into
seven bands and reduces noise in the way most suitable
for each band, noise can be effectively eliminated with
minimal adverse impact on the program material. A wide
variety of musical sources can be handled by adjusting
the attack and release settings.
Hum canceling is performed over a wide bandwidth (20
Hz - 10 kHz) to eliminate hum with minimal effect on the
program material, The automatic frequency detection
function can detect the frequency of hum from the AC
power supply or input signal, and remove the hum
precisely.
The Auto function provides a simple procedure which
automatically makes the optimal settings for noise and
hum removal.
20 bit AD/DA ensures a high S/N ratio.
20 dB of headroom is provided, allowing the SN-700 to
be used on the main program of a PA/SR system.
Both balanced phone jacks and XLR connectors are
provided for input and output, allowing use with a variety
of equipment including channel insertion.
The SN-700 is equipped with a memory feature that
allows settings geared to specific situations to be stored
for later recall.
The Lock function can be used to prevent accidental
operation.
MID! is supported, allowing the SN-700 to be operated
from an external MIDI device.
Copyright © 1996 ROLAND CORPORATION
All
rights
reserved.
No
part
of
this
publication
may
be
reproduced
in
any
form
without
the
written
permission
of
ROLAND
CORPORATION.
etna
Tent
LC
EL
RTL
SET,
J