M2TECH EVO SUPPLY User manual

M2TECH
EVO SUPPLY
LOW NOISE BATTERY POWER SUPPLY/CHARGER
USER MANUAL
REV. P R C – 9/2011

E vo S UPPLY
LOW NOISE BATTERY POWER SUPPLY/CHARGER
REVISION P r B – JULY 2011
Copyright © 2011, M2Tech Srl
2
M2T ch
www.m2tech.biz
Warning!
Changes or modifications not authorized by the manufacturer can invalidate the
compliance to CE regulations and cause the unit to be no more suitable to use. The
manufacturer refuses every responsibility regarding damages to people or things
due to the use of a unit which has been subject to unauthorized modifications or to
misuse or to malfunction of a unit which has been subject to unauthorized
modifications.
Warning!
This unit includes a Li-Ion battery. o not expose the unit to heat of fire! o not
open unit nor replace the battery. Refer to qualified personnel for servicing.
This unit is compliant with the following CE regulations: CEI E 55022:2009 Class B (Radiated Emissions),
CEI E 55024:1999, CEI E 55024:A2/2003, CEI E 55024:IS1/2008 (Radio Frequency Electromagnetic
Fields, 50Hz Magnetic Field Immunity Test and Electrostatic Discharges – ESD).
Recycling
The label above, printed on the product case, indicates that the product, when no more usable, can’t be
treated as generic garbage, but must be disposed of at a collection point for recycling of electrical and
electronic equipment, in compliance with the WEEE regulation (Waste of Electrical and Electronic
Equipment).
By making sure that this unit is correctly recycled, you will help preventing potential damages to environment
and human health, which could be caused by a wrong treatment of this product as generic garbage.
Materials recycling helps saving natural resources. For more in-depth information about recycling this
product, please contact M2Tech Srl.

E vo S UPPLY
LOW NOISE BATTERY POWER SUPPLY/CHARGER
REVISION P r B – JULY 2011
Copyright © 2011, M2Tech Srl
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M2T ch
www.m2tech.biz
Dear customer,
thank you for purchasing E vo S UPPLY. What you have is a first-rate dedicated power supply
with many unique features conceived to obtain the best audio performance out of the
hi F ac E vo and other 9V-operated M2T ch products.
E vo S UPPLY features a Li-Ion battery with capacity sufficient to many hours of continuous
listening with the hi F ac E vo, an integrated battery charger and a low noise regulator
which is used to give power to the outputs while the battery is being charged. This allows
for uninterrupted operation anc certain full charge time.
E vo S UPPLY has two outputs to power two M2T ch 9V devices, like the hi F ac E vo and the
E vo C LOCK. They can be switched off when the powered devices are not used to save
battery charge.
An external universal voltage wall adaptor is provided for battery charging and supply of
the devices while the battery is being charged. The adaptor may be disconnected when
using the battery to minimize the interferences from the mains.
We feel that your expectations will be fulfilled by E vo S UPPLY: you’ll hear your music files in
a way like never before, prepare for a whole new experience!
adia Marino, CEO
Please annotate here your E vo S UPPLY serial number for future reference:
S/ : ____________________________________
Date of purchase: _________________________

E vo S UPPLY
LOW NOISE BATTERY POWER SUPPLY/CHARGER
REVISION P r B – JULY 2011
Copyright © 2011, M2Tech Srl
4
M2T ch
www.m2tech.biz
INDEX
1. Unpacking........................................................................................................................5
2. Front Panel ......................................................................................................................6
3. Connections.....................................................................................................................7
4. Operation modes .............................................................................................................8
4.1. Charge Inhibit............................................................................................................8
4.2. Automatic Charge Start.............................................................................................8
5. otes on Battery Usage...................................................................................................9
6. Technical Specifications ................................................................................................10

E vo S UPPLY
LOW NOISE BATTERY POWER SUPPLY/CHARGER
REVISION P r B – JULY 2011
Copyright © 2011, M2Tech Srl
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M2T ch
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1. Unpacking
The E vo S UPPLY box contains the following items:
• Evo Supply
• 1 supply cable terminated with 5.5/2.1mm plug on one end and with Bulgin heavy
duty plug on the other end
• 15V/2A wall adaptor or 15V/2A adaptor with detachable power cord
Should any item be missing, please contact your dealer for a warranty claim. Please note
the supply cable may be obtained as a separate item if needed.

E vo S UPPLY
LOW NOISE BATTERY POWER SUPPLY/CHARGER
REVISION P r B – JULY 2011
Copyright © 2011, M2Tech Srl
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M2T ch
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2. Fr nt Panel
1
2
3
4
3
5
6
M2TECH
E S VO UPPLY
Low nois batt ry pow r supply/charg r
BATTERY
OUT 1
ON
DC IN
15V DC
OUT 2
CHG/REG OFF
MADE IN ITALY
S/N:
1) Supply input. Apply 15V
DC
from the wall adaptor provided in the package. Another
power supply may be used if necessary, but user must be aware that in this case the
warranty is void. Tip is positive, ring is negative. A maximum current of 2A is necessary.
This input is protected against polarity inversion.
2) Charge m de switch. Allows for selection of two operation modes for the battery
charger included.
Select “BATTERY” to use the battery charge up to the complete depletion. The outputs will
be automatically switched off when the low voltage threshold is reached, to avoid an
excessive depletion which would damage the battery. Selecting this mode will avoid using
the internal low-noise regulator to power the devices for best performance, but operation
will not be uninterrupted.
Select “CHG/REG” to ensure uninterrupted operation. The battery will be used as primary
power source up to complete depletion. When reaching the low voltage threshold, the
battery charger will automatically enabled, the battery will be disconnected from the load
and the low noise regulator will provide power to the devices. The switchover is
transparent to the user. At the end of the charge process, the outputs will revert to the
battery. The low noise regulator has been designed to ensure very low noise, so the user
should hear very little differences between the battery and the regulator.
3) Outputs. Connect the supply cables provided in the package. Positive is the upper
hole, negative is the lower hole.
4) Output switch. Switches outputs on and off. It is advisable to switch outputs off when
the devices attached to the E vo S UPPLY are not in use, to avoid charge cycles which
shorten the battery life.
5) P wer indicat r. Turns on when the wall adaptor is connected to the E vo S UPPLY and
to a mains socket.
6) Charge indicat r. Turns on when charge is in progress.

E vo S UPPLY
LOW NOISE BATTERY POWER SUPPLY/CHARGER
REVISION P r B – JULY 2011
Copyright © 2011, M2Tech Srl
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3. C nnecti ns
Connect the plug of the wall adaptor to the supply connector (Page 6, no.1) of E vo S UPPLY.
Connect the Bulgin plug of each supply cable to one of the E vo S UPPLY output connectors
(Page 6, no.3).
Connect the 5.5/2.1mm plug of each supply cable to a 9V-operated M2Tech device. Of
course, one cable may be used when one device only needs supply; the other output will
be unused.

E vo S UPPLY
LOW NOISE BATTERY POWER SUPPLY/CHARGER
REVISION P r B – JULY 2011
Copyright © 2011, M2Tech Srl
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4. Operati n m des
4.1. Charge Inhibit
This operation mode is selected when the charge mode switch (Page 6, no.2) is set on
“BATTERY”. This mode allows for operation from battery only, even with the wall adaptor
disconnected, to ensure the least disturbance form the mains.
In this operation mode, the battery charge is inhibited and the attached devices are
powered by the battery until the voltage goes down to the low voltage threshold. At that
point, the E vo S UPPLY battery protection circuit for depletion engages and the battery is
isolated from the load to prevent further depletion.
To restore the operation and start the charge, it is necessary to switch to automatic charge
start mode and to connect the wall adaptors if it’s been previously disconnected.
4.2. Automatic Charge Start
This operation mode is selected when the charge mode switch (Page 6, no.2) is set on
“CHG/REG”. When this mode is selected, the battery remains the main power source, that
is, it is used to power the attached devices. When the low voltage threshold is reached,
however, the battery charge is automatically engaged, the battery is disconnected from the
outputs and a low noise regulator is connected in its place to ensure continuity of the
output supply. Thanks to a reservoir capacitor, the switchover is transparent to the
devices.
Charge lasts around three hours, during which the output current is provided by the 9V
internal low noise regulator. This allows for uninterrupted operation of the attached
devices, with a slight supply quality reduction. The charge-in-progress is indicated by the
charge indicator LED (Page 6, no.6).
At the end of the charge time, the outputs automatically revert to the battery.
The automatic charge start mode must be selected to manually enable the battery charge
after the unit has automatically switched outputs off following to battery depletion in charge
inhibit mode.

E vo S UPPLY
LOW NOISE BATTERY POWER SUPPLY/CHARGER
REVISION P r B – JULY 2011
Copyright © 2011, M2Tech Srl
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M2T ch
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5. N tes n Battery Usage
The E vo S UPPLY includes a Lithium-Ion battery. It’s a high performance battery with high
power density and low internal resistance, capable of very high surge currents and very
clean supply. The battery has a built-in protection circuit that protects it from overcurrent
and short circuits, overcharge and excessive depletion. The protection circuit should be
sufficient to protect the battery against wrong operation or usage. Moreover, the E vo
S UPPLY circuit also includes a depletion protection circuit which engages at a voltage
slightly higher than the low voltage threshold as set in the built-in protection circuit. This
allows for battery’s long life.
Despite the aforementioned protection circuits, a Li-Ion battery is a delicate device which
needs to be properly used to avoid damages. Particularly, do not expose the E vo S UPPLY
to excessive heat or cold or fire, nor drop liquids on it. Do not short-circuit the outputs.
Should the E vo S UPPLY be exposed to temperature beyond the allowed range, put the unit
in a normal environment and allow for at least one hour before operating it. Too cold or too
hot a battery would result in an explosion when operated. Please refer to the specifications
section (Page 10) for temperature limits.

E vo S UPPLY
LOW NOISE BATTERY POWER SUPPLY/CHARGER
REVISION P r B – JULY 2011
Copyright © 2011, M2Tech Srl
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6. Technical Specificati ns
Supply voltage: ................................. 15V
DC
Power consumption: ......................... 2A peak (charge in progress, 1A peak out)
Output voltage: ................................. 9.5 to 11.5V
DC
(battery)
9V
DC
(low noise regulator)
Output current:.................................. 500mA (continuous, both outputs)
1A (peak, both outputs)
Output noise: .................................... TBD (battery)
TBD (low noise regulator)
Output regulation: ............................. TBD (battery, 0 to 500mA output current)
TBD (low noise regulator, 0 to 500mA output current)
Battery duration: .............................. min. 7 hours (@ 240mA output current)
Battery charge time........................... 3 hours +/- 30 minutes
Battery charge cycles........................ 1000
Operative temperature range:........... 0°C to 40°C
Size: ................................................. 105x50x104mm (cabinet)
105x50x150mm (with connectors)
Weight:.............................................. 400g