Line Magnetic LM-210IA User manual

INTEGRATED VACUUM TUBE AMPLIFIER
LM-210IA

Thanks for choosing our Line Magnetic LM-210IA Integrated Amplifier as an important part of your
music system and please read the manual carefully before installation and operation.
In order to prevent damage during transportation the amplifier is packed with protective foams
surrounding the tubes. Before installation please remove these foams to avoid any risks.
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Table of Contents
Table of Contents ------------------------------------------------------
Package Contents ------------------------------------------------------
Product Features -------------------------------------------------------
Specification ------------------------------------------------------------
Safety Precautions -----------------------------------------------------
Connection --------------------------------------------------------------
Functions Description ------------------------------------------------
Turning on --------------------------------------------------------------
Remote Control --------------------------------------------------------
Tube Replacement -----------------------------------------------------
Maintenance ------------------------------------------------------------
Warranty Statement ---------------------------------------------------
Troubleshooting -------------------------------------------------------
Suggestions:
LM-210IA Integrated Amplifier is designed and manufactured with our original parts and reaching the
best results. We are not responsible for problems and damages caused by non-original parts replacement
in the amplifier.
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Please carefully check the package first and then open the package. Package contents include:
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Package Contents
1. Line Magnetic LM-210IA 1
2. Main Fuses 2
3. Power cord 1
4. Remote control 1
5. 1.5V Batteries(AAA) 2
6. User’s Manual 1
7. Warranty Card 1 Note:All other parts except above are not included.
Recommendation:
Keep all packing materials for future use and please fill in the warranty card for registration of warranty.
Note:
Please make sure local voltage level is matched with the input level of the amplifier which indicates on the
rear panel. Too low or too high voltage may cause problem and in case you've found improper voltage please
contact our company or our local agent.
Product features
.Eight watts per channel, Single Ended design, Pure Class A Integrated Stereo Amplifier with 300B output power
tubes.
.All tube Integrated with 12AX7 input tubes, 310A driver tubes and 300B output tubes.
.4 pairs of input and speaker terminals for 4, 8 or 16 ohm speakers are located on the back panel.
.One Meter with two pointers is located in the middle of front faceplate to allow you to monitor the power output of
each channel.
.One piece of specially designed big power EI transformer for power supply and two pieces of Single-ended EI output
transformers with wide bandwidth are applied.
.Japanese Audio grade ALPS volume potentiometer has been applied.
.Standard with remote control for volume control and muting operation.
.Hand made construction with the finest point-to-point wiring.
.Easily installed tube cover for better protection.

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Power output：8W＋8W（Class A Single Ended）
Frequency response：15Hz～35kHz（-1.5dB）
THD：1%（1kHz）
S/N Ratio：87dB
Input Sensitivity： 400mV (Integrated) 1000mV (Pre-IN) Input Impedance：100kΩ
Output Impedance：4Ω ，8Ω ，16Ω
Power Requirements： ～120V/230V/240V 5%（50Hz/60Hz）
Dimension (W×D×H)： 380mm x 405mm x 345mm
Tube Complement：12AX7×2、310A×2、300B×2、5U4G×2 Net Weight：30 kg
Power Consumption：190W
Working Condition: Temperature: 0℃～40℃ Moisture: 20%～80%
Storage Condition: Temperature: -20℃～70℃ Moisture: 20%～90%
Note : Line Magnetic Audio reserves the right to change specifications at any time without
further notice in advance if products are upgraded. Specifications on the manual only show
the specifications of the amplifier you bought.
Specification
Safety precautions
1. Unplug the power cord if you are not going to use the product for an extended period of time.
2. Temperature will become higher after working in long period of time and please keep the unit's ventilation open
and install the amplifier at a well-ventilated place to avoid troubles and fire hazard.
3. Forbidden to operate as unloaded.
4. Forbidden to operate when the output is open or shorted.
5. Do not attempt to service this product yourself. Opening the cover may expose you to dangerous voltage or other
hazards.
6. We are not responsible for any problems caused by checking and opening without permission of our company.
For service, Please contact a qualified service technician.
7. Do not place any objects filled with liquids such as vases or some others on the top or around.
8. Clean only with dry cloth.
9. Please move the amplifier carefully not to drop the unit or be subject to other strong shocks.
10. Unplug the power cord if you are not going to use the product during thunderstorm.
Carefully read and follow the Manual for installation:
1. Do not place the product near heat sources such as radiators, heat registers or other products that produce heat.
2. In order to avoid being overheated please keep the unit’s ventilation open.
3. Do not expose this appliance to rain or moisture.
4. Amplifier should install steadily and make sure all four feet are on the same level.
5. Keep the amplifier in a certain distance so that it can be easily connected.
6. Keep the amplifier in 15CM’s distance to the surrounding walls.
Please make sure all other equipments to be connected are working well before installation of the amplifier.

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert users
to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of
sufficient magnitude a risk 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.
RISK OF ELECTRONIC SHOCK
DO NOT OPEN
CAUTION
.To reduce the risk of electric shock, do not remove the cover.
.No user serviceable parts inside. Refer servicing to qualified service personnel.
.To reduce the risk of fire or electronic shock, do not expose the unit to rain or moisture.
Note: Input voltage level of the amplifier is ～120V/230V/240V 5% and please make sure that the supply
voltage is proper. Too low or too high voltage may cause problem or reduce its life.
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Safety precautions
Connection
Audio Connection
Here is the standard way of connection for LM-210IA with other audio equipments. Please take pictures below
for your reference:
Suggestions:
1.During installation please always refer to other products’ operation manuals.
2.Please do not insert the power cord into the main socket only if all other instruments are well connected.
3.R refers to right channel while L represents left channel.
4.Please take the right guidance for connection as wrong connection may cause noise or low grade function.
5.Do not fasten signal cables together with other cables just like the power cables to avoid disturbance.


Check the impedance of your speakers. Attach the positive from your speaker to the 4, 8 or 16 ohm terminals and
the negative to the 0 ohm terminals separately. 4 ohm, 8 ohm or 16 ohm impedance speakers are preferential and
if your speakers are 6 ohm it would not cause damage to the amplifier and experience using 4, 8, or 16 ohm positive
terminal to find what the best is for your speakers. Please take the right guidance for connection and do not mix as
wrong connection may cause noise or low grade function.
How to connect the speaker cables:
1.Unscrew the terminal knobs,
2.Insert the speaker cables,
3.Screw the terminal knobs.
speaker terminal
U type terminal
Note: Connect the speaker cables with the amplifier after it is well connected with the speakers.
Please notice the right direction indication of the cable and do not mix up the positive and
the negative end.
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Speaker Connection
speaker(L) speaker(R)
Connection
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Note:
1. Be careful of the high temperature of the tubes during operation.
2. Input tubes, Driver tubes and Power tubes must be matched for better
results.
Overview from the top:
V1, V2: 300B Power Tube
V3, V4: 310A Driver Tube
V5, V6: 12AX7 Input Tube
V7, V8: 5U4G Rectifier Tube
Hum Adjustment V2
Hum Adjustment V1
Functions Description

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Front Panel:
NFB Switch:
MAX/MIN
Function Switches:
Backlight Switch:
ON/OFF
Integrated/PRE-IN Switch
Rear Panel:
0dB
3dB
Function Switches
Volume Knob
Mute Indicator
Power Switch
Input Selector
Remote Receiver
Holes for restoring
the Meter pointer to Zero.
2011.08.01
LM-0020sa
Power LED
Output Level Meter
Functions Description
Left Channel output
Power Socket with main fuse:
Main fuse is located on the rear
of the amplifier just below the
power cord socket. Replace with
the same type and value fuse.
Voltage Selection: Please unplug
the power cord before switch
between different.
Signal Inputs
Right Channel
output
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Connect to AC ～120V/230V/240V 5%
（50Hz/60Hz）
Note: 1.It is normal that power transformer becomes hot for extended period
of operation.
2.Please unplug the power cord if you’re not going to use the product for
an extended period of time.
3.Please do not insert the power cord into the mains socket only if all
other instruments are well connected
4.To prevent damage to the amplifier never cut off the speaker cables
while the unit is ON.
5.In order to protect the tubes please re-switch on the amplifier after
turned off in two minutes.
Warning: Please make sure corresponding voltage is the same as required.
We are not responsible for damage caused by misuse of unsuitable
voltage.
Precautions:
Connection of the power cord:
Connect the speaker cables and signal cables first and then plug the power cord into the power socket.
Before turning on the amplifier please make sure all connections are right and power supply is stable.
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Turning ON
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Volume
Mute
REMOTE CONTROL UNIT
LM-02
Installation and replacement of the batteries:
Installation:
1. Remove the screws of the remotes backcover.
2. Insert two AAA batteries , please check the indicators giving for the correct positioning.
3. Re-assemble the remote.
Description
VOLUME UP/VOLUME DOWN
MUTE
Replacement:
1. When the batteries are low , please replace them with new ones.
2. Two pieces of AAA batteries are used.
3. Do not mix the new batteries with old ones.
4. Please use high quality batteries , these can prevent leakage of electrolyte.
Remote Control

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Tube Replacement
Clean the amplifier with soft dry cloth and please do not use any chemicals for cleaning.
Maintenance
1. Limited Warranty: One-year limited warranty from the date of purchase except vacuum tubes which are warranted for six months.
2. Limited to original purchaser. This warranty is for the sole benefit of the original purchaser of the covered product, and may not
be transferred to a subsequent owner.
3. Conditions & Limitations. This warranty is subject to conditions and limitations, as follows. This warranty is void and
inapplicable if the product has not been used or handled other than in accordance with the instructions in the owner’s manual,
or if it has been misused, abused, damaged by accident or neglect, or in transport once in possession of purchaser, or the defect
is due to the product being repaired or tampered with by anyone other than Zhuhai Line Magnetic Audio Co., LTD or an
authorized Line Magnetic Audio Representative.
4. Remedy: If the product contains material, or manufacturing defects, it must be packed in original packaging and returned to
Zhuhai Line Magnetic Audio Co., LTD or an authorized Line Magnetic Audio Representative at his or her sole expense.
A returned product must be accompanied by a written description of the defect and the warranty card with an authorized dealer’s
stamp on which indicates the model and series number, the date of purchase, the name and address of the purchaser.
Zhuhai Line Magnetic Audio Co., LTD reserves the right to modify the design of the product and change the specifications
without notice or obligation to any person.
5. Miscellaneous. Any implied warranties relating to the above product shall be limited to duration of this warranty. This warranty
does not extend to any incidental or consequential costs or damages to purchaser. Our liability will be no more than the amount
you paid for the product that is the subject of a claim. This isthe maximum amount for which we are responsible. This warranty
gives you specific legal rights. You may also have other rights which vary from country to country, state to state
Warranty Statement
Terms & Conditions:
Tube Basics
12AX7
310A
300B
12AX7EH、ECC83、E83CC、CV4004、ECC803、5751
WE310A
300B、300A、4300B
5U4G 5R4GY、U52、CV1071、5V3
Common Replacements
2011.08.01
LM-0020sa

11
Troubleshooting
Please follow the instructions in this manual to keep the amplifier working in a reliable and safe manner.
If problems arise or you think there is a problem , please first check the tips given below to checkfor the excact reason.
Sometimes problems could be caused by other related equipment , please check the connections . After doing so and
the problem still exists , please contact our factory or your local dealer.
Problem Cause Remedy
NO OUTPUT
Power LED is ON.
Power LED is OFF.
Power cord is not well-connected
Main fuse is out.
Troubles of inner parts
or components
Please check the power cable connection or
power outlet connection
Replace with the same type and value fuse
Please contact your local agents
or our factory
NO signal input
Volume is at ZERO Turn up the Volume
Check the function of the sound source
Check the input connectors and/or
switch to the proper input
NO reaction to the remote
Stereo image
is not so good
Noise output
Sound Distortion High input signal level
Ground of input signal cable is
open or bad contact of the input
signal cable
Components or circuits are
in trouble
Signal input cables or speaker
cables are wrongly connected
Disturbed by external instruments
Battery is low
Obstacle is located between the
remote and the amplifier
Turn down the volume to suitable position
Replace the input signal cable with a
new one
Please contact with local dealer or
our factory
Reconnect it as suggested in the manual
Keep away from the disturbance and
restart the amplifier.
Please replace the bateries
Remove the obstacle
Line Magnetic logo is registered trademark of Zhuhai Line Magnetic Audio Co., LTD.
Copyright of Zhuhai Line Magnetic Audio Co., LTD. All Rights Reserved.