Phasemation EA-300 User manual

Owner’s Manual
EA-300
PHONO AMPLIFIER

3
Table of Contents
Safety Instructions...................................................................................................4
Usage Cautions.......................................................................................................5
Care of Equipment...................................................................................................5
Names and Functions..................................................................................6, 7, 8
Connections...........................................................................................................9
Trouble Shooting Guide..........................................................................................10
User Support.......................................................................................................11
Specifications.........................................................................................................11
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.

4
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 EA-300 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 and 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 endure to disconnect the AC plug
from the outlet. After no smoke is confirmed, ask
dealer for the repair.
Do not disassemble the equipment or do not
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 or water,
or small metal object on the equipment. In case
the liquids are spilled or the 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 and electric
shock.
Do not install the equipment in the humid or
dusty environment. This can result in a risk of
fire or electric shock.
When connecting with other audio equipment or
a television set, read the manual of equipment,
turn the power switch off, and connect according
to the instructions.
Do not install the equipment on the 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 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.

5
Installation place
Useable AC power supply voltage and frequencies
Repair
Handling of 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 slope or vibrating place.
Do not install this equipment near the window where the equipment can be exposed to rain.
Do not install this equipment in high humidity environment.
Avoid using this equipment on equipment generating heat such as an amplifier.
Keep this equipment away from a power supply transformer or motor of other equipment.
AC 100V power supply must be supplied.
The equipment operates normally in the both areas of 50Hz and 60Hz power supply frequen-
cies.
Do not touch the AC power cable with the 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 and 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 the case of the equipment failure, consult the dealer.
Avoid covering the equipment with the cloth or installing it in enclosed space because
radiation and air convection from the chassis surface can be hindered.
To prevent external sound pressure, grit and 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 realized by cooling with air convec-
tion in the chassis and with radiation and air convection from the chassis having high
thermal conductivity.

(1) (2) (7) (6) (5) (4) (3)
(1) POWER switch
The power supply can be turned on or off by pressing the POWER switch.
(2) POWER indicator
The POWER indicator lights up blue when the power supply is supplied.
The POWER indicator starts to flash immediately after turning the power on and it
keeps flashing until the circuits become stable operation; and an audio sound is not
outputted for the time.
(3) INPUT switch
The input signal can be selected by switching the INPUT switch between INPUT1 and
INPUT2.
(4) MODE switch
Set the MODE switch to the MC position when an MC cartridge is used.
Set it to the MM position for an MC cartridge outputting voltage more than 1.5mV.
Set it to the MM position when an MM cartridge is used.
Before switching it to MC or MM, the power supply must be turned off by pressing the
POWER switch or the volume of amplifier connected with the equipment must be
decreased.
(5) LOW CUT FILTER switch
When a bent record is played, an uncalled infrasonic signal which is not the audio
signal can be inputted to the phono amplifier, the diaphragms of speakers for low
frequency signal can be concussed, which can result in a risk of damaging the
speakers or distorting the sound.
In this case by switching this switch to “ON” position, the infrasonic signal can be
attenuated, which can weaken the above-described phenomenon.
Names and Functions
Front Panel

(6) PLAYBACK CURVE switch STEREO/MONO
• STEREO: RIAA curve for playing a stereo LP record
• MONO : MONO1 or MONO2 for playing a Monaural LP record
(7) PLAYBACK CURVE switch MONO1/MONO2
• MONO 1: Curve for playing a Monaural LP record (For DECCA label and so on: FFRR)
• MONO 2: Curve for playing a Monaural LP record (For Columbia label and so on)
Playback Equalizer Curve
Frequency
Playback Equalizer Curve Settings
Curve Turnover/Low limit Roll off
STEREO 500Hz/50Hz (+20dB) 75μs-2120Hz (–13.75dB at 10kHz)
MONO 1 500Hz/125Hz(+12 to12.5dB) 50μs-3000Hz (–10.5dB at 10kHz)
MONO 2 500Hz/100Hz(+14dB) 100μs-1590Hz (–16dB at 10kHz)
Note
A recording correction curve made by each label, which is not RIAA curve for
recording correction of uniform international standard, is applied for some LPs
pressed in the mid-1960. Two kinds of typical recording correction curves to
cope with this situation are adopted for this equipment.

Rear Panel
(8) (10) (9) (11)
(8) Phono Amplifier INPUT terminals
There are two systems, INPUT1 and INPUT2 for the input terminals.
Connect respective L and R wires from an analog disc player.
(9) Phono Amplifier OUTPUT terminals
Connect the L and R OUTPUT terminals to input-terminals of equipment requiring line
level (150 to 250mV) such as AUX terminals of pre-amplifier.
(10) GND Terminal
Connect an earth cable from analogue disc player with the GND terminal.
(11) AC INLET
Connect the AC power cable of accessories to the AC INLET, and plug it in an outlet.
Caution
The L and R OUTPUT terminals must not be connected to input-terminals of
pre-amplifier having a built-in phono amplifier. Because the excessive current
will be generated, an audio sound will be distorted.

9
Connections
Long slot
Side assigning
the circle
Circle
A circle is assigned on the one side of the plug
of AC power cable so that better quality sound
is reproduced by matching the power supply
polarity with other equipment.
This polarity may be different because of
house wiring for outlet or because of 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
AC Power Cable of Accessories
Pre-amplifier
Analogue Disc Player
Earth Cable

10
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.
Sound is
distorted.
When operating
the function
switch, the click
noise is heard.
The plug of AC power cable is
not plugged in completely.
The audio wires are not plugged
in completely.
The OUTPUT terminals of this
equipment are connected to the
input terminals for a phono
amplifier on the panel of the
pre-amplifier.
An MM cartridge is used, but the
MODE switch is set to MC1 or
MC2.
Some click tone is generated
because of switch principle.
Sound is not outputted until the
circuits become 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 other equipment is
installed near this equipment.
Insert the plug of AC cable into an
outlet firmly.
Firmly insert the outlet of AC
power cable into the AC inlet of
Power equipment.
Insert the audio wires completely.
Set the MODE switch to MM.
Before operating the switches, turn
the power of this equipment to
OFF or decrease volume of the
connected amplifier.
Please wait till the power indicator
will change from flashing to
lighting up.
Insert the audio wires completely.
Connect the earth cable com-
pletely.
Place this equipment apart from
the power supply transformer or
motor of other equipment.
Connect them to line level input
terminals (such as AUX) of pre-
amplifier.

11
Specifications
User Support
As for the unclear matters with regard 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.
Accessories: AC power cable
Product
Cartridge type
Input sensitivity
Input impedance
Gain
Input referred S/N ratio
Maximum input voltage
Rated output voltage
Deviation from RIAA curve
Output impedance
Channel separation
Power consumption
Dimensions (mm)
Weight
Full symmetry & Non-Feedback Type
MM/MC Phono Amplifier
200 mV (1 kHz)
±0.3 dB (20Hz to 20kHz)
100 ohms
100 dB or more
(20Hz to 20kHz, for both of MM and MC)
10W (100VAC, 50 to 60 Hz)
W310 x H79 x D335
5 kg
MM
2.5 mV
47k ohms
38 dB
–124 dBV
125 mV
MC
0.12 mV
470 ohms
65 dB
–144 dBV
6 mV

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://phasemation.com
is the original audio brand of Kyodo Denshi Engineering Co., Ltd.