SPEC RPA-W7EX User manual

REAL-SOUND POWER AMPLIFIER
RPA-W7

2
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO
NOT REMOVE CHASSIS. NO USER-SERVICEABLE
PARTS INSIDE. REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR.
THIS SYMBOL IS INTENDEDTO ALERTTHE USERTOTHE PRESENCE OF NON-INSULATED
“DANGEROUS VOLTAGE” WITHIN THE PRODUCTS ENCLOSURE THAT MAY BE OF
SUFFICIENT MAGNITUDETO CONSTITUTE A RISK OF ELECTRIC SHOCK TO PERSONS.
THIS SYMBOL IS INTENDEDTO ALERTTHE USER TOTHE PRESENCE OF IMPORTANT
OPERATING AND MAINTENANCE (SERVICING) INSTRUCTIONS INTHE LITERATURE
ACCOMPANYING THE UNIT.
WARNING
Exposure to extremely high noise levels may cause a
permanent hearing loss.
Individuals vary considerably to noise induced hearing loss
but nearly everyone will lose some hearing if exposed to
sufficiently intense noise for a sufficient time.
Operating Environment
Operating environment temperature and humidity: +5 °C to
+35 °C (+41 °F to +95 °F); less than 85 %RH (cooling vents not
blocked)
Do not install this unit in a poorly ventilated area, or in locations
exposed to high humidity or direct sunlight (or strong artificial
light)
WARNING
This equipment is not waterproof. To prevent a fire or shock
hazard, do not place any container filled with liquid near
this equipment (such as a vase or flower pot) or expose it
to dripping, splashing, rain or moisture.
POWER-CORD CAUTION
Handle the power cord by the plug. Do not pull out the plug
by tugging the cord and never touch the power cord when
your hands are wet as this could cause a short circuit or electric
shock. Do not place the unit, a piece of furniture, etc., on the
power cord, or pinch the cord. Never make a knot in the cord or
tie it with other cords.The power cords should be routed such
that they are not likely to be stepped on. A damaged power
cord can cause fire or give you an electrical shock.
Check the power cord once in a while.
European model only
If you want to dispose this product, do not mix it with general household waste. There is a separate collection
system for used electric products in accordance with legislation that requires proper treatment, recovery and
recycling.
Private households in the member states of the EU, in Switzerland and Norway may return their used electric products free of
charge to designated collection facilities or to a retailer (if you purchase a similar new one).
For countries not mentioned above, please contact your local authorities for the correct method of disposal.
By doing so you will ensure that your disposed product undergoes the necessary treatment, recovery and recycling and thus
prevent potential negative effects on the environment and human health.
Safety Precautions

3
Contents
Chapter 1 Introduction
Check included items .......................................................3
Installing this product ......................................................3
Regarding installation ......................................................3
Chapter 2 Connections
Connections diagram ......................................................4
How to connect the speaker cords..............................8
How to connect XLR cables............................................8
How to connect audio cords..........................................9
How to connect the power cord...................................9
Chapter 3 Part Names
Front panel ........................................................................ 10
Rear panel ......................................................................... 11
Chapter 4 How to Operate
Playback steps.................................................................. 12
Chapter 5 Other
Troubleshooting.............................................................. 13
Care and maintenance.................................................. 13
Specifications ................................................................... 14
Warranty and after sales service................................ 15
Chapter 1 Introduction
Check included items
•Power cord ×1
•Mini plug connection cable
•Operation manual (this book)
Installing this product
•Be sure to install this product on a flat, stable surface.
•Do not install this product in the following locations:
– On top of a television (the image may warp)
– Near a cassette deck or other magnetism emitting
device (the audio may be adversely affected)
– In a location hit by direct sunlight
– In a moist location
– In high or low temperature locations
– In a location with vibration
– In a location with much dust or tobacco smoke
– In kitchens or other locations where fumes are
emitted and oil is used
Regarding installation
Caution
•Never place items on top of this product, cover it with a sheet,
or use it when its heat radiation is obstructed. Abnormally high
temperatures may damage the product.

4
Chapter 2 Connections
Connections diagram
Important
• When connecting devices or making changes, be sure to turn the POWER switch OFF and disconnect the power cord from the electrical outlet.
Plug in the power cord last.
• If an extremely loud signal is input to this product, there is a danger that noise will be generated and cause damage. In such a case, lower the
input signal level.
1. When STEREO mode
• When a playback device is connected directly, connecting a preamplier (separately sold) to the EX-VOL CONT terminals allows
you to adjust the volume of this product.
Ser. No.
RPA-W7 EX
Speaker system
To the electrical outlet
To AC IN
To the audio output terminal
Control amplifier, etc To the balanced output terminals
L (left side)
To the speaker
terminals
To the speaker
terminals
R (right side)
* Depending on the Control amplifier used, there may be a caution regarding simultaneously connecting RCA and XLR, so refer to the operation
manual of the respective Control amplifier.

5
Chapter 2 Connections
Control amplifier, etc
2. When MONO x 2 mode (bi-amplier connection)
• The output of both L (left side) and R (right side) are the same for mono input.
• When a playback device is connected directly, connecting a preamplier (separately sold) to the EX-VOL CONT terminals allows
you to adjust the volume of this product.
Ser. No.
RPA-W7 EX
Ser. No.
RPA-W7 EX
HIGH
LOW
HIGH
LOW
Speaker system
Speaker system
To the electrical outlet
To the electrical outlet
To AC IN
To AC IN
To the audio
output terminal
L (left side)
L (left side)
To the speaker
terminals
To the speaker
terminals
R (right side)
R (right side)

6
Chapter 2 Connections
3. When MONO x 2 mode (mono connection)
• When a playback device is connected directly, connecting a preamplier (separately sold) to the EX-VOL CONT terminals allows
you to adjust the volume of this product.
Ser. No.
RPA-W7 EX
Ser. No.
RPA-W7 EX
Speaker system
Speaker system
To the electrical outlet
To the electrical outlet
To AC IN
To AC IN
To the audio
output terminal
L (left side)
To the speaker
terminals
To the speaker
terminals
R (right side)
Control amplifier, etc
L (left side)
R (right side)

7
Chapter 2 Connections
4. When MONO BTL mode
• For BTL mode, we recommend using speakers with a nominal impedance of 8 to 16 Ω.
• When a playback device is connected directly, connecting a preamplier (separately sold) to the EX-VOL CONT terminals allows
you to adjust the volume of this product.
Ser. No.
RPA-W7 EX
Ser. No.
RPA-W7 EX
Speaker system
Speaker system
To the electrical outlet
To the electrical outlet
To AC IN
To AC IN
To the audio
output terminal
L (left side)
To the speaker
terminals
To the speaker
terminals
R (right side)
Control amplifier, etc
Control amplifier, etc
L (left side)
R (right side)

8
Chapter 2 Connections
How to connect the speaker cords
The connection terminals are red for positive (+) and black
for negative ().
1 Twist the wire.
2 Loosen the speaker terminal, and insert
the speaker cord.
3 Once the speaker cord is inserted, tighten
and secure the speaker terminal.
The connection terminals on this product are also
compatible with Y lug terminals and banana plugs.
Caution
•Use speakers with nominal impedance of 4 Ω to 16 Ω.
•Connect accurately the + and terminals between the speakers
and this product.
•Do not allow unshielded center wire from the terminals to stick
out and make contact with each other. If the center wires touch
the device may break.
•Use sufficient current capacity speaker cord and be sure to make
connections that are not loose and do not short. Using low current
capacity connecting cords or making imperfect connections may
affect playback audio and can cause overheating or short circuits.
•High voltage is output from the speaker terminals. To avoid the
danger of electrical shock, be sure to unplug the power cord before
making speaker connections.
How to connect XLR cables
Connect the left and right XLR input terminals of this
product to the respective left and right balanced output
terminals of the product to be connected.
Match the orientation of the XLR plug to this product’s XLR
input terminal, and insert until a click is heard.
LINE 2
When disconnecting an XLR plug, press the latch lever
(the part with “PUSH” inscribed on it) while pulling the
cable. Use caution, as forceful disconnection may damage
the unit.
LINE 2
Note
• The pin positioning of the XLR input terminal of this product is
depicted below. Confirm that the product to be connected is
compatible with the pin positioning of this product. For further
details, consult the operation manual included with the product
to be connected.
1
2
3
1: Ground
2: Hot
3: Cold
Y lug terminals Banana plugs

9
Chapter 2 Connections
How to connect audio cords
Connect the white RCA plug (for left) to the left side input
terminal with the white or black line, and the red RCA plug
(for right) to the right side input terminal with the red line.
Press firmly to push the plugs all the way in.
How to connect the power cord
Once all connections have been made, connect the
included power cord to the AC IN terminal of this product
and to the residential electrical outlet. Press firmly to push
the plug all the way in.
* The plug type varies according to the region.
Caution
•The power cord for this product is removable, but please
refrain from using power cords other than the cord included
(3P plug-in socket type with electrical current capacity: 7 A).
•Never insert the ground wire from the AC CONVERSION PLUG
into the electrical outlet.
Note
• When not using this product for extended periods, be sure
to turn the POWER switch OFF or unplug the power cord
from the electrical outlet.
• Turn the POWER switch OFF before unplugging the power
cord.
• The power consumption of this product varies greatly
depending on the volume level of the playback audio
signal. For satisfactory music playback, connect to an
electrical outlet with sufficient capacity. (Connecting to a
low capacity electrical outlet creates the danger that the
connection will overheat.)
• If the residential power supply is cut off due to a power
outage, the state of this product will be as follows when
power is restored.
– If the POWER switch is ON when power is restored
pThe product returns to its state prior to power
restoration.
– If the POWER switch is OFF when power is restored
pThe product is in the normal power OFF state.
This product
Power cord
Electrical outlet
L (white)
R (red)

10
Chapter 3 Part Names
Front panel
1
2
3
1POWER switch
Turns power ON and OFF.
Pulling the power switch releases the lock. To turn on the
power, raise up the power switch while pulling out on it.
To turn off the power, lower the power switch while pulling
out on it.
2ON indicator
Shines green when this product is on.
3OFF (WAITING) indicator
Shines red for several seconds following power-up. Once
the product is operational, this indicator turns off and the
ON indicator shines green. It also flashes for several tens of
seconds when the power is shut off. During this time this
product is preparing to power off, so please wait until the
indicator light goes out.
Caution
•When turning the product on immediately after turning it off,
check to make sure that the OFF (WAITING) indicator has turned off
completely.Turning the power on while the OFF (WAITING) indicator
is lit can cause malfunction.

11
Chapter 3 Part Names
1AC IN terminal
Connect the included power cord. (pages 4 to 7, 9)
2Fuse
The fuse may break if something abnormal occurs to the
product. Contact us if the fuse breaks. (page 15)
3EX-VOL CONTROL terminal
Connect a SPEC preamplifier (separately sold). Use the
included mini plug connection cable for the connection.
(page 15)
4Speaker terminal (R (right) channel)
Speaker terminal (L (left) channel)
For a BTL connection, connect the minus (-) wire of the
speaker cord to the R (right) channel. (page 4 to 8)
5Audio input terminals (LINE 1)
RCA type input terminal. (pages 4 to 7, 9)
6XLR input terminal (LINE2)
XLR type input terminal (female). (pages 4 to 8)
7GAIN selector switch
Switches the output gain of this product.
MAX : Switches the setting to the rated output.
-6 dB : Switches the setting to the rated output minus 6 dB.
EX-VOL: Set this when connecting a SPEC preamplifier.
8Speaker selector switch
Switches the mode for the connection between this product
and the speakers.
STEREO : Set this for use with an ordinary stereo (driving
of both the L and R channels) connection.
(pages 4)
MONO x 2 : Set this to use this product as a mono amplifier.
Input the INPUTS to the L channel.
(pages 5 to 6)
MONO BTL : Set this for a BTL connection (bridge connection).
Input the INPUTS to the L channel.
(pages 7)
9INPUT selector switch
Switch the input terminals of this product.
LINE 1 : Set this when the device connected to this
product is connected to the RCA terminals.
LINE 2 : Set this when the device connected to this
product is connected to the RCA terminals.
LINE 2 (ATT) : Set this when the device connected to this
product is connected to LINE 2 (XLR terminals)
and you hear distortion due to, for example,
excessive input. This reduces the level of the
input signal by approximately 6 dB.
Rear panel
Ser. No.
RPA-W7 EX
1
2
3 7 8 9
5 64

12
Chapter 4 How to Operate
Playback steps
2
1 Turn on the power of the playback device.
2 Check that the volume level of this product is turned
down, and lift up the front panel POWER switch while
pulling out on it to turn on the power.
Check that the ON indicator on the body front panel is lit.

13
Chapter 5 Other
Troubleshooting
If you think this product may be broken, check the following troubleshooting items. Some minor operational errors can make
the product appear to be broken.
Potential causes other than this product should also be considered. Check the other devices being used as well as all simultaneously
operated electrical devices. If the following instructions do not help even on multiple inspections, contact us. (page 15)
Issue Cause/Treatment Reference
The power does not turn on. •Is the power plug disconnected from the electrical outlet?
pCorrectly insert the power plug into the outlet.
p. 9
•Is the power plug disconnected from the AC IN terminal?
pCorrectly insert the power plug.
p. 9
•If the power will not turn on even with correctly connecting the power plug, the
fuse may be broken.
pContact us for consultation.
p. 15
There is no sound. •Is the connecting cord disconnected from the terminal, or connected incorrectly?
pCorrectly connect the cord.
p. 4 - p. 9
•Is the speaker cord disconnected from the terminal, or connected incorrectly?
pCorrectly connect the speaker cord.
p. 4 - p. 8
•Is the terminal or connecting cord pin plug dirty?
pWipe clean the terminal or plug.
–
•Does the setting of the INPUT selector switch of this product match the terminals
with the device connected?
pCorrectly select the input.
p. 4 , p. 11
•Is the GAIN selector switch of this product set to EX-VOL?
pSet it to the MAX or -6dB position.
p. 11
There is no sound from one
speaker.
•Is the connecting cord or speaker cord for one side disconnected?
pCorrectly connect the cord.
p. 4 - p. 9
Sound comes out of the speakers
even after turning off this
product.
•Immediately after turning off the power, sound may come out of the speakers while
the OFF (WAITING) indicator is lit, but this is not a sign of breakage.
pWhen playback is finished, first turn the volume of this product all the way down
and then shut off the power of this product.
p. 9
The volume is low. •Is the GAIN selector switch set to -6 dB?
pSet it to MAX.
p. 11
The sound is unnatural. •Is the SPEAKERS selector switch set to MONO x 2 or MONO BTL?
pCorrectly select the input.
p. 11
Care and maintenance
For daily maintenance, use a polishing cloth to lightly wipe the front panel of this product. If it is very dirty, use a soft cloth
moistened with neutral detergent watered down to 1/5-1/6 concentration and wipe off the dirt, then wipe dry with a dry cloth.
If alcohol, thinner, petroleum ether or insecticide adhere to the front panel it may be damaged, so use caution. Whenever using
pre-moistened wipe, be sure to completely read the warning instructions that come with the wipe.
This product uses natural wood for its side panel and insulator. Do not place it in direct sunlight or near a heater. The front panel
may become discolored, and the product may be warped due to the natural wood contracting.

14
Chapter 5 Other
Specications
Amplifier
Maximum output ........................................100 W × 2 (4 )
Frequency response...................................10 Hz - 30 kHz ±1 dB (6 , 1 W)
Harmonic distortion ratio.........................0.02 % (at 1 kHz, 80% output)
Input sensitivity, gain.................................300 mVrms, 37.3 dB (at MAX volume, 6 , 1 kHz, unbalanced input)
Line input terminal .....................................Balanced input: 1 RCA unbalanced input: 1
Speaker terminal ........................................1
Power supply, other
Power voltage...............................................110, 120, 220, 230, 240 V AC, 50 Hz/60 Hz
Electrical consumption .............................With no signal: 9 W, during maximum output: 150 W
External dimensions...................................350 mm (width) ×95 mm (height) ×375 mm (depth)
Weight.............................................................6.0 kg
Included items
Power cord.....................................................1
Mini plug connection cable.....................1
Operation manual (this book) ................1
* Due to improvements the above specifications and external appearance may be changed without notice.

15
Chapter 5 Other
Warranty and after sales service
zAbout Warranty
Make sure that the name of your distributor and the date
of purchase are written in the warranty. Read it carefully,
and then keep it in a secure location. The warranty is
valid for one year from the date of purchase.
zMalfunctions
If the product malfunctions in the course of normal
use (use in accordance with the manual and safety
precautions) during the warranty period, then we will
repair the product free of charge. When you bring
your product to the distributor for servicing, be sure
to bring the warranty with you. See the guarantees in
your warranty for details. We will repair malfunctions
occurring after the warranty period has expired for a
fee, in accordance with our servicing regulations.
Please note that we cannot provide any warranty or
bear any liability for damage to any equipment that is
connected to the unit resulting from incorrect use.
Terms of Warranty
1. If this product malfunctions during use in accordance with the manual,
and during the warranty period, then please bring the product and
this warranty to the store where you purchased it. It will be repaired
free of charge.
2. If you cannot ask the store where you purchased it for repairs (e.g. if
you have moved or the product was a gift), please consult with SPEC
CORPORATION.
3. A fee will be charged for repairs in the following circumstances, even
if it is during the warranty period.
(A) The product malfunctioned or was damaged due to user error or
unauthorized repair or modification
(B) The product malfunctioned or was damaged due to dropping,
etc. after purchase
(C) The product malfunctioned or was damaged due to fire, flooding,
lightning and other weather phenomena, pollution, salt damage,
or the like
(D) The product malfunctioned or was damaged due to other than
normal use, such as long hours of continuous commercial use
(E) The main unit has been disassembled
(F) The text of the warranty has been changed or overwritten
(G) The malfunction was caused by another company’s product
4. This warranty cannot be re-issued. Store it in a safe place, and do
not lose it.
WARRANTY RPA-W7EX Real Sound Power Amplifier
Name Telephone
( )
Address
Date of Purchase Distributor Name & Telephone
Warranty Period (Main Unit Only)
One Year
from Date of Purchase
Contact Information
SPEC CORPORATION
TEL: [phone]
FAX: [phone]
E-mail: info-[email protected]o.jp
URL : spec-corp.co.jp
SAMPLE

2015
4th FL.NIHOMBASHI NAKAYA BUILDING,12-12 NIHOMBASHI-
KOBUNA-CHO,CHUO-KU,TOKYO 103-0024,JAPAN