Phasemation MA-1000 User manual

MA-1000
MONAURAL POWER AMPLIFIER
Owner’s Manual

2
Table of Contents
Safety Instructions...................................................................................................3
Usage Cautions.......................................................................................................4
Care of Equipment...................................................................................................4
Names and Functions..........................................................................................5
Mounting or Removing the Vacuum Tubes.........................................................6, 7
Connections...........................................................................................................8
Trouble Shooting Guide..........................................................................................9
User Support.......................................................................................................10
Specifications.........................................................................................................10
Thank you for purchasing Phasemation product.
Read your Owner’s Manual thoroughly for proper operation before starting to
use your equipment.
Please keep your Owner’s Manual with caution.

3
Safety Instructions
WARNINGS
CAUTIONS
Before starting
to use
In this owner’s manual and on the product, various pictures are used
to show our customers how to use Phasemation MA-1000 safely and
properly in order to avoid the loss of customer’s assets and to protect
our customers from harm.
Do not use the
equipment being
broken.
Never remodel the
equipment.
Never install the
equipment near
water.
Never put an object
filled with water on
the equipment.
Never put an object
inside the equipment.
Cautions of
Installation
Places which are not
suitable for
installation
Connection
In case of using the equipment in an abnormal
state, such as seeing smoke, having strange
smell, or hearing unusual sounds or noise, this
can result in a risk of fire or electric shock. If
such an abnormal state occurs, turn the power
switch off and then disconnect the AC plug from
the outlet. After no smoke is confirmed, ask the
dealer for a repair.
Do not disassemble the equipment or remodel
it. This can result in a risk of fire.
Do not use the equipment in the bathroom. This
can result in a risk of fire or electric shock.
The equipment is designed for using indoors.
Do not expose the equipment to water. This can
result in a risk of failures, fire, and electric
shock.
Do not put a vase, flower pot, glass or any
object filled with skin lotion, chemical, water, or
small metal object on the equipment. In case the
liquids are spilled or small objects fall inside the
equipment, this can result in a risk of fire or
electric shock.
If a foreign object has fallen inside the
equipment, turn the amplifier’s power switch off
and contact the dealer. To keep using the
equipment can result in a risk of fire or electric
shock.
Do not install the equipment in a humid or dusty
environment. This can result in a risk of fire or
electric shock.
When connecting with other audio equipments
or a television set, read the manual of the
equipment, turn the power switch off, and
connect according to the instructions.
Do not install the equipment on unstable tables
or unstable places. In case the equipment falls,
it can result in a risk of injury of customers.
Pay attention to the wiring of the cord so that a
foot is not caught or else the person can stumble
or the equipment can fall which is so dangerous.
When moving the equipment, turn the power
switch off and endure to disconnect the power
plug from the outlet and remove the connecting
cord. The cord can be damaged and this can
result in a risk of fire and electric shock.

4
Installation place
Useable AC power supply voltage and frequencies
Repair
Handling AC power cable
Usage Cautions
Care of Equipment
Note
In order to use the equipment for a long time, follow the instructions
shown in below:
Do not install this equipment near a heat source such as direct sun light, a stove and so on.
Do not use this equipment at a poorly-ventilated, humid or dusty place.
Do not install this equipment at an unstable place such as a slope or a vibrating place.
Do not install this equipment near the window where the equipment can be exposed to rain.
Do not install this equipment in a high humid environment.
Avoid using this equipment on an equipment generating heat such as an amplifier.
Keep this equipment away from a power supply transformer or a motor of another equip-
AC 100V power supply must be supplied.
The equipment operates normally in both areas of 50Hz and 60Hz power supply frequencies.
Do not touch the AC power cable with wet hands.
Do not pull the cable strongly or do not bend the cable. The cable can be damaged and can
result in a risk of fire and electric shock.
Use the AC power cable of the accessories.
If the equipment is covered with dust or dirt clean it with a soft cloth.
If the equipment is covered with heavy dust put a very thin mild detergent on a soft cloth.
Wring the cloth and wipe off the dust and dirt. Then clean with a dry soft cloth.
Never use chemical agents such as thinner, naphtha or alcohol when cleaning it.
If any of them is attached to the equipment, the silk printing can be flaked or the surface can
lose metal luster.
In case of the equipment failure consult the dealer.
Avoid covering the equipment with a cloth or installing it in enclosed space because
radiation and air convection from the chassis surface can be hindered.
To prevent external sound pressure and grit / dust from entering the equipment,
inspiratory/exhaust ports to radiate the heat are not arranged against the equipment
consciously. Radiating the heat from the equipment is done by cooling with air convection
in the chassis and with radiation and air convection from the chassis having high thermal
conductivity.

5
Names and Functions
(1) POWER switch The power supply can be turned on or off by pressing the POWER
switch.
After pressing the POWER switch, (2) POWER indicator lights up.
(2) POWER indicator The POWER indicator lights up blue when the power supply is
supplied.
Front Panel
Rear Panel
(3) Input terminal Connect an output of a pre-amplifier or attenuator.
(4) Output terminals Connect a speaker.
These terminals can be connected for a 4-ohm speaker (4 ohms to
8ohms) or a 8-ohm speaker (8 ohms to 16 ohms)
(5) AC power inlet Connect the AC power cable of accessories between this terminal
and an AC outlet.
(6) Fuse The glass tube fuse rated 5.2mm in diameter, 2x20mm, 3A, and
AC250V is inserted.
When replacing it with a new fuse after being blown, please contact
your dealer.
(1)
(3) (4)
(5)
(6)
(2) POWER
MA-1000 POWER AMPLIFIER
INPUT
PS
ESER.NO.
AC IN FUSE 3A
100V 50/60Hz 70W
MODEL MA-1000
MADE IN JAPAN
KYODO DENSHI ENG CO.,LTD.

POWER
MA-1000 POWER AMPLIFIER
6
Mounting or Removing the Vacuum Tubes
(1) Remove the vacuum tube cover straight up.
Removing the cover
Mounting the vacuum tubes
(1) The vacuum tubes are arranged in the order of “5R4GA”, “2A3-40”, and “ECC803” from the left.
(2) Because the vacuum tubes have respective directional properties mount them as follows.
Vacuum tube cover
Front side of unit
Shape for rib
Thicker pin
From-air view of vacuum tube
Pin-1
5R4GA ECC8032A3-40
5R4GA 2A3-40 ECC803
(3) After mounting all vacuum tubes attach the vacuum tube cover.

7
Removing the vacuum tubes
(1) Remove the vacuum tube cover straight up.
(2) When removing the vacuum tube, you must hold the resin portion at the root of the vacuum
tube and pull it out. In case of holding the glass portion, the vacuum tube may break.
Cautions for handling the vacuum tube
Since the vacuum tubes are made of glass, they can be broken easily so they should be
handled carefully.
After turning the power to OFF and waiting until the vacuum tubes cool well, you can remove
them or mount them. In case the vacuum tube does not cool, this can result in a risk of
failure, electric shock, or burns.
We measured the performance of the vacuum tubes of accessories and selected good ones.
In case a vacuum tube except our ones of accessories is used, this can result in a risk of
performance deterioration or failure. The vacuum tubes of accessories should be used.
After mounting the vacuum tubes, the cover must be placed back. For the vacuum tube,
a high voltage is applied in the operation and then they turn to a high temperature. In case
you touch them or some object hits them, these can result in a risk of burnt injury, electric
shock, or fire.
When an abnormal state occurs for the vacuum tubes, please contact your dealer.

INPUT
PS
ESER.NO.
AC IN FUSE 3A
100V 50/60Hz 70W
MODEL MA-1000
MADE IN JAPAN
KYODO DENSHI ENG CO.,LTD.
8
LEFTRIGHT
OUTPUT
Speaker
Connect a 4- or
8-ohm speaker.
Connections
AC Power Cable of
Accessories
Pre-amplifier
Long slot
Side assigning
the circle
Circle
A circle is assigned on one side of the plug of
the AC power cable so that better sound quality is
reproduced by matching the power supply polarity
with another equipment.
This polarity may be different because of house
wiring for outlet or because of the power supply
condition; however, generally the side assigning
the circle should be inserted to the long slot of the
outlet.
Plugging the plug of AC power cable in an outlet

9
Trouble Shooting Guide
Trouble Causes Measures
The power is not
supplied.
In case the equipment does not operate properly, check out the followings.
If it does not operate properly even after checking the advised points, endure to
disconnect the AC plug from the outlet and then contact the dealer.
The sound is not
heard.
Hum noise is
heard.
Sound is not
heard immediately
after turning the
power on.
The plug of AC power cable is
not plugged in completely.
The audio wires are not plugged
in completely.
Sound is not outputted until the
circuits come to stable operation.
The audio wires are not plugged
in completely.
The earth cable from the
analogue disc player is not
connected.
A power supply transformer or
motor in an other equipment is
installed near this equipment.
Insert the plug of the AC cable into
an outlet firmly.
Firmly insert the outlet of the AC
power cable into the AC inlet of the
power equipment.
Insert the audio wires completely.
Please wait about 30 seconds.
Insert the audio wires completely.
Connect the earth cable com-
pletely.
Place this equipment apart from
the power supply transformer or
motor of other equipments.

10
Specifications
User Support
As for the unclear matters with regards to the after service, please contact the dealer.
The appearance and specifications of this equipment are subject to change without notice in order
to improve it.
Product
2A3-40 Single Monaural Power Amplifier
Maximum output
10W / 8 ohms (T.H.D. 10%)
Gain
21 dB
Frequency characteristics
10 Hz to 40 kHz (+0, –3 dB)
Input terminal
Unbalanced input terminal (RCA terminal)
Output terminals
For speaker (4 ohms or 8ohms)
Power consumption
70 W
Max. dimensions (mm)
247 (W) x 224 (H) x 427 (D)
Weight
16 kg
Accessories:
AC power cable (x1)
Vacuum tube:
2A3-40 (x1)
ECC803S (x1)
5R4GA (x1)

Kyodo Denshi Engineering Co., Ltd.
Ikebe-cho 4900-1 Tsuzuki-ku Yokohama-shi Kanagawa 224-0053 Japan
TEL [phone]
FAX [phone]
E-mail [email protected]
URL http://www.phasemation.com
is the original audio brand of Kyodo Denshi Engineering Co., Ltd.