Phasemation EA-550 User manual

Owner’s Manual
EA-550
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
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-550 safely and
properly in order to avoid the loss of our customer’s assets and to
protect our customers from harm.
SAFETY PRECAUTIONS
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
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.
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 appliance.
WARNING:
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS
APPLIANCE TO RAIN OR MOISTURE.
DECLARATION OF CONFORMITY
We declare under our sole responsibility that this product, to which this declaration relates,
is in conformity with the following standards:
EN60065, EN55032, EN55020, EN61000-3-2 and EN61000-3-3.
Following the provisions of Low Voltage Directive 2014/35/EU and EMC Directive 2014/30/EU
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings.
Install in accordance with the manufacturer’s instructions.
8. not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers)
that produce heat.
9. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the
point where they exit from the apparatus.
10. use attachments/accessories by the manufacturer.
11.
Use only with the cart, stand, tripod, bracket, or table specified
specified
by the manufacturer, or sold with
the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to
avoid injury from tip-over.
12. Unplug this apparatus during lightning storms or when unused for long periods of time.
13. all servicing to servicequalified personnel. Servicing is required when the apparatus has
been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled
or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate
normally, or has been dropped.
14.
Do
Only
Refer
Batteries shall not be exposed to excessive heat such as sunshine, or thefire like.

5
Usage Cautions
Care of Equipment
If the equipment is covered with dust or dirt, clean it with a soft cloth.
If the equipment is very dirty, put detergent which is thinned very well with water 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.
Cautions on installation
* *
*Wall
*
• More than 0.1 m is recommended.
• Do not place any other equipment on this unit.
* For proper heat dispersal, do not install this unit in a confined space,
such as a bookcase or similar enclosure.
CAUTION:
To completely disconnect this product from the mains, disconnect the plug from the wall socket outlet.
The mains plug is used to completely interrupt the power supply to the unit and must be within easy access by the user.
A NOTE ABOUT RECYCLING:
This product’s packaging materials are recyclable and can be reused. Please dispose of
any materials in accordance with the local recycling regulations.
When discarding the unit, comply with local rules or regulations.
This product and the supplied accessories constitute the applicable product
according to the WEEE directive.
NOTE ON USE
WARNINGS
Avoid high temperatures.
Allow for sufficient heat dispersion
when installed in a rack.
Handle the power cord carefully.
Hold the plug when unplugging
the cord.
Keep the unit free from moisture,
water, and dust.
Unplug the power cord when not
using the unit for long periods
of time.
Do not obstruct the ventilation
holes.
Do not let foreign objects into
the unit.
Do not let insecticides, benzene,
and thinner come in contact with
the unit.
Never disassemble or modify the
unit in any way.
Ventilation should not be impeded
by covering the ventilation
openings with items, such as
newspapers, tablecloths or
curtains.
Naked flame sources such as
lighted candles should not be
placed on the unit.
Observe and follow local
regulations regarding battery
disposal.
Do not expose the unit to dripping
or splashing fluids.
Do not place objects filled with
liquids, such as vases, on the unit.
Do not handle the mains cord
with wet hands.
The equipment shall be installed
near the power supply so that the
power supply is easily accessible.
Do not keep the battery in a
place exposed to direct sunlight
or in places with extremely high
temperatures, such as near a
heater.

6
Names and Functions
Front Panel
1) POWER Switch
This is the switch to turn the power on/off.
2) POWER Indicator
When the power is turned on, it lights up blue.
Right after the power is turned on, it keeps on blinking until the internal circuit is in a
stable condition and sounds will not come out during that time.
3) LOW CUT FILTER Changing Switch
If records with large warps are played, not only the music signals, but unnecessary
ultra-low region signals are inputted into the phono amp and the vibration board of the
low regional speakers will greatly shake back and forth and this may damage the
speakers or distort the sounds. In this case, by turning this switch on, it can attenuate
the ultra-low region signals and lessen the above phenomenon.
4) PLAYBACK CURVE Changing Switch
This is the switch that changes the playing equalizer characteristics.
The following three types of playing curves are installed. Switch according to the type
of record you want it to play.
-STEREO : RIAA curve for stereo LP playing
-MONO1 : Curve 1 for monaural LP playing (used on a DECCA label and
so forth : FFRR)
-MONO2 : Curve 2 for monaural LP playing (used on a Columbia label
and so forth)
POWER
EA-550 PHONO AMPLIFIER
ON
OFF
STEREO
MONO 1
MONO 2
MM
MC
DEGAUSS
LOW CUT
FILTER
PLAYBACK
CURVE
FUNCTION INPUT
1
2
3

7
Electric Characteristics of a Playing Equalizer Curve
Curve Turnover/Low limit Roll off
STEREO 500Hz/50Hz(+20dB) 75 s-2120Hz(-13.75dB at 10kHz)
MONO 1 500Hz/125Hz(+12-12.5dB) 50 s-3000Hz(-10.5dB at 10kHz)
MONO 2 500Hz/100Hz(+14dB) 100 s-1590Hz(-16dB at 10kHz)
-25.00
-20.00
-15.00
-10.00
-5.00
0.00dB
5.00
10.00
15.00
20.00
25.00
STEREO
MONO 1
MONO 2
Frequency (Hz)
Playing Equalizer Curve
10 100 1000 10000 100000
5) FUNCTION Changing Switch
Change according to the type of cartridge used
- MM Select this when using an MM cartridge.
- MC Select this when using an MC cartridge.
- DEGAUSS This can degauss the MC cartridge that contains magnetized iron core.
Select the input that is connected to the MC cartridge with the INPUT
switch and let the record play for about 30 seconds. No sounds will
come out during this time.
6) INPUT Changing Switch
This switch changes the input terminal
1) Input Terminal 1 (INPUT1) is selected RCA (unbalanced) / XLR (balanced)
2) Input Terminal 2 (INPUT2) is selected RCA (unbalanced) / XLR (balanced)
3) Input Terminal 3 (INPUT3) is selected RCA (unbalanced)

8
7) INPUT 1,2,3 (RCA) Terminals
Use when the phono cable to be connected is an RCA type connector
8) INPUT 1,2 (XLR) Terminals
Use when the phono cable to be connected is a balanced (XLR) type
connector
9) GND Terminal
Connect the earth cable of the analogue disc player to the GND terminal
(see p.9 for the wiring)
10) OUTPUT 1,2 (RCA) Terminals
This is an equalizer output (RCA) terminal of an unbalance. This connects to the line
level’s RCA input terminal (150-250mV) of a pre-amplifier AUX terminal or so forth.
11) AC IN
The power input terminal connects to the power outlet with the attached AC power cable.
Do not connect to a phono input terminal of a pre-amplifier having a phono amplifier
inside. It will go to maximum input and sounds will distort.
- For a balance connection of the XLR terminal, an applicable phono cable is necessary.
- For the XLR terminals, no.1 is GND, no.2 is HOT, and no.3 is COLD.
Rear Panel (Right) Rear Panel (Left)
Caution
Caution
- For INPUT1,2, do not connect the RCA terminal and XLR terminal at the same time.
- Do not insert a short pin to the RCA terminal when using the XLR terminal.
- The XLR terminal is only for an MC cartridge. If a balanced (XLR) output of an MC
stepup transformer is connected, it may malfunction.
Caution
PUSH
PUSH
INPUT R
CAUTION !
RISK OF ELECTRIC SHOCK
DO NOT OPEN
KYODO DENSHI ENG. CO.,LTD.
MADE IN JAPAN
50/60Hz 10W
MODEL EA-550
OUTPUT
AC IN
SER. NO.
GND
3
E
SP
2
1
12
3
21
3
21
PUSH
PUSH
INPUT L
CAUTION !
RISK OF ELECTRIC SHOCK
DO NOT OPEN
KYODO DENSHI ENG. CO.,LTD.
MADE IN JAPAN
50/60Hz 10W
MODEL EA-550
OUTPUT
AC IN
SER. NO.
GND
3
E
SP
2
1
21
3
21
3
21

9
Connections
PUSH
PUSH
INPUT R
CAUTION !
RISK OF ELECTRIC SHOCK
DO NOT OPEN
KYODO DENSHI ENG. CO.,LTD.
MADE IN JAPAN
50/60Hz 10W
MODEL EA-550
OUTPUT
AC IN
SER. NO.
GND
3
E
SP
2
1
12
3
21
3
21
PUSH
PUSH
INPUT L
CAUTION !
RISK OF ELECTRIC SHOCK
DO NOT OPEN
KYODO DENSHI ENG. CO.,LTD.
MADE IN JAPAN
50/60Hz 10W
MODEL EA-550
OUTPUT
AC IN
SER. NO.
GND
3
E
SP
2
1
21
3
21
3
21
AUX INPUT
RIGHT LEFT
Attached GND Cable
Pre-amplifier
Attached AC Power CableAttached AC Power Cable
Analogue Disc Player
Earth Cable
- For a balance connection of the XLR terminal, an applicable phono cable is necessary.
- For the XLR terminals, no.1 is GND, no.2 is HOT, and no.3 is COLD.
Caution
- For INPUT1,2, do not connect the RCA terminal and XLR terminal at the same time.
- Do not insert a short pin to the RCA terminal when using the XLR terminal.
- The XLR terminal is only for an MC cartridge. If a balanced (XLR) output of an MC
stepup transformer is connected, it may malfunction.
Caution
LR

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,
disconnect the AC plug from the outlet and then contact the dealer.
The sound is not
heard
A hum noise is
heard
The sound is not
heard immediately
after turning the
power on
The sound is
distorted
When operating
the function
switch, the click
noise is heard
The plug of the AC power cable
is not plugged in completely.
(1) The audio wires are not
plugged in completely.
The outputs of this equipment are
connected to the input terminals
for a phono amplifier on the panel
of the pre-amplifier.
(2) The connected INPUT
terminal and INPUT changing
switch do not match.
(3) The type of cartridge used
and the FUNCTION changing
switch do not match.
(4) The FUNCTION changing
switch is set to DEGAUSS.
(5) Although a balanced input is
used, a short pin is inserted to
the unbalanced input (RCA).
(6) A balanced (XLR) output of an
MC stepup transformer is
connected to the balanced
(XLR) input.
Does not support balanced (XLR)
outputs of MC stepup transformers.
Connect as unbalanced (RCA).
Some click tone is generated
because of the switch principle.
The 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 another equipment is
placed near this equipment.
Insert the plug of the AC cable into
an outlet firmly.
Firmly insert the AC power cable
into the AC inlet of the power
equipment.
Insert the audio wires completely.
Correctly match the INPUT
terminal and INPUT changing
switch.
Match the FUNCTION changing
switch (MM/MC) to the cartridge
(MM/MC) to be used.
Remove the short pin from the
unbalanced input terminal.
Before operating the switches, turn
the power of this equipment off or
decrease the 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
completely.
Place this equipment apart from a
power supply transformer or a
motor of another equipment.
Connect them to line level input
terminals (such as AUX) of the
pre-amplifier.

11
Cartridge Type
Input Sensitivity
Applicable Cartridge Impedance
Gain
Input Referred S/N Ratio
Rated Output Voltage
Deviation from RIAA Curve
Output Impedance
Power Consumption
Dimensions (mm)
Weight
V-I/I-V Converting Type Complete Full
Symmetrical and Non-Feedback Type Phono Amplifier
200mV (1kHz)
±0.5dB (20Hz 20kHz)
47
10W for each ch
211 (W) × 93 (H) × 360 (D)
5.5kg for each ch
MM
2.5mV
47k or less
38dB
-120dB
MC
0.13mV
1.5-40
64dB
-140dB
Accessories : AC power cable x 2, GND cable x 1
User Support
As for the unclear matters with regards to the after service, please contact the dealer.
Specifications
The appearance and specifications of this equipment are subject to change without notice in order
to improve it.
Product
Power Requirement AC120V 60Hz (U.S.A)
AC230V 50/60Hz (Europe)

Kyodo Denshi Engineering Co., Ltd.
8-40-17 Shinyoshidahigashi Kohoku-ku Yokohama-shi Kanagawa 223-0058 Japan
TEL [phone]
FAX [phone]
E-mail [email protected]
URL http://phasemation.com
is the original audio brand of Kyodo Denshi Engineering Co., Ltd.