Lymaudio LYM 1.0 T User Manual

LYM AUDIO

E-mail: [e-mail]

Web: www.lymaudio.it

LYM 1.0 T

LYM 1.0 T

Class D Integrated Amplifier

USER’S MANUAL

LYM AUDIO

LYM AUDIO is a Lysis-May S.r.l. brand.
The company was established in 2010 in order to give its driving force the chance to apply their
experience, accumulated over more than thirty years in the sector of civilian, industrial and military
electronics, to the manufacture of their own products.
This priceless know-how allows the company today to develop electronic devices for the world of Hi-Fi
with a very high technological input, starting with careful design planning and production engineering
and then to a prudent choice of materials.
The transparency and correctness of our company wants to show the public that Hi-Fi can, or rather
must, be affordable for everyone and our commitment is thus to present electronic devices that are
good value and provide customers with a product that is the top in its category.

MANUAL LYM 1.0 T

SPEAKER OUTPUT

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Made in Italy

PAGE 2

DC 16-19 V

MANUAL LYM 1.0 T

PAGE 7

DECLARATION OF CONFORMITY

LYSIS-MAY SRL
Via A. Manzoni, 84
21028 Travedona Monate (VA)
Italy
Mobile.: [phone]
Fax.: [phone]
E-mail: [e-mail]

Declares that the

Product: Class D Audio amplifier

model: LYM 1.0T

serial number : .......................

accessories : ….....................

serial number : ….....................

conforms to the following European Union directives:

2004/108/CE Electromagnetic compatibility directive
2006/95/CE Low voltage directive
2002/95/CE RHOS directive

Applied norms:

CEI EN 55103-2:2009 EMC Immunità
CEI EN 55103-1:2009 EMC Emissione
CEI EN 60335-1:2008-07 Sicurezza degli Apparecchi Elettrici

The technical file requested by these directives is held at the headquarters of LYSIS-MAY SRL, Via
A. Manzoni, 84, 21028 Travedona Monate (VA).

Director

Dott. Matteo Malguzzi

Technical Director

Dott. Ing. Antonino Campo

MANUAL LYM 1.0 T

TECHNOLOGY AND COMPONENTS

Ÿ

Ÿ SMT constructional technique:

Ÿ High quality printed circuit, both in terms of materials used and of circuit design, full of

devices that aim to minimize noise and loss of power and to avoid internal wiring

Ÿ TRIPATH TA2024C chip

Ÿ Two-stage output filters designed to reduce noise to meet 'Class D' criteria and

electromagnetic interference emissions

Ÿ Stabilized voltage regulator equipped with high performance capacitor which is necessary to

meet the energy requirements during peaks of acoustic power.

Ÿ High performance capacitor (10000μF) positioned at the power circuit output.

Ÿ Low noise polypropylene capacitor in the TA2024C chip input circuits

Ÿ Overload LED for excellent music listening. This indicator light comes on when the user pushes

the volume beyond the TA2024C chip's capacities, i.e. beyond the distortion threshold. The
listener can thus reduce the volume until the LED turns off and guarantee listening without
any noticeable distortion. If this LED stays on and the amplifier goes silent, it indicates an
accidental short circuit at the output terminals or that the TA2024C chip has overheated;
should this happen, just turn off, remove the cause and turn on again. If it turns out that the
chip has overheated, you need to turn off and wait until its temperature has dropped to below
105°C before turning it on again.

Ÿ Power supply. A 16/19Vdc, at least 50W switching power supply is recommended (supplied

optionally). This type of power supply can easily be bought (power supply for Notebook, jack
size 2.5x5.5 mm.). The amplifier's internal regulator aims to stabilize the voltage at 13.68V
and to eliminate the typical ripple of this type of power supply. Furthermore, the internal
regulator also avoids malfunctions provoked by (short term) increases in power supply
voltage. In any case, it is possible to use a classical linear power supply set between 16 and
19Vdc.

Ÿ Protective diode positioned at the power input to avoid internal malfunctions caused by

power supply polarity inversions.

Class D Amplification (commercial identification “Class-T” property of TRIPATH).

MANUAL LYM 1.0 T

PAGE 3PAGE 6

ELECTRICAL CHARACTERISTICS

External power supply: 16Vdc /19Vdc 2.2A (minimum), Power Jack 2.5x5.5mm ( + central).
Internal power supply: 13.68Vdc, Ripple + Noise: 100uV
Input impedance: 12KOhm
Input sensitivity: 1Vp @ Pmax (Audiophile Quality Sound). See workshop tests.
Passband: 10Hz- 20 KHz
Maximum load power: 2x17W @ 4 Ohm, 2x12.8W @ 6 Ohm, 2x10.4W @ 8 Ohm,

RMS values of power measured at frequency of 1KHz.
Protection: Short circuit (over-current), Heat (over-temperature).
Outputs: BTL configuration (Bridge Tied Load).
Inputs: AUX1 and AUX2, both with sensitivity of 1Vp.
Current: - Max Output Power (4 Ohm): 11.5 Watt/channel at 2.4 A, for

distortion-free listening.

- Zero Output Power (Volume at zero): 140 mA

- Stand-by Power (Amplifier off): 9 mA

Note: The values quoted above were measured with an external power voltage of 19 Vdc.

Dimensions: 192mm x 139mm x 61mm (case + dial + connectors)
Weight: 550g

CERTIFICATE OF GUARANTEE

Your Lym 1.0T is guaranteed for 3 years*!
The guarantee is valid from the date on the purchase receipt
The relevant serial number, which is also displayed inside the amplifier, is unique.

Your Lym 1.0T serial number

Regarding any malfunction, contact us directly at: [e-mail]

“GUARANTEE” means the free repair or replacement of components or parts of the device that are recognized, by
Lysis-May S.r.l., to be faulty in manufacture or in materials employed

Sending and return of the device is at customer's expense

The guarantee does not cover damage due to negligence, incorrect usage or installation, not conforming to the
warnings in the instruction manual, lightning, overloading and overvoltage, insufficient or irregular power supply,
or damage that occurs during transport to or from the customer.

Lysis-May S.r.l. declines any responsibility for any damage that can, directly or indirectly, result to people, things
or animals as a consequence of improper use of the device.

Modifications to the device during the guarantee period annuls said guarantee.

FRONT OF AMPLIFIER

MANUAL LYM 1.0 T

Figure 2

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1 2

ON/OFF LED

(POWER)

OVERLOAD

LED

ON/OFF DIAL

VOLUME CONTROL

INPUT

SELECTOR

PAGE 5

INSTALLATION

Correct installation requires the following steps to be carried out in this order:

· Check that the volume dial (fig. 2 point 3) is in the OFF position. If it is not, turn it anti­clockwise until a click tells you it is in the correct position.

· Carry out the earthing by using the GND knob (fig. 3 point 2) on the back of the amplifier.

Note: the metal casings of all the units that make up the system, connected to the Earth of the

electrical system beforehand, must be connected to each other by an appropriate lead
connected to GND.

· Connect the power cable to the appropriate terminals on the back of the amplifier (fig. 3
point 3)

· Connect the RCA signal cables to the appropriate inputs on the back (fig. 3 point 1).

· Choose the input you wish to use with the selector on the front of the amplifier (fig. 2 point

4)

· Insert the power jack into the appropriate input (fig. 3 point 4)

· Turn on the external power supply.

· Turn on the amplifier by turning the volume dial clockwise a little: the “PW” and “OL” LEDs
(fig. 2 points 1 and 2) will turn on simultaneously for about one second.

· Connect the power cables to the appropriate terminals on the back of the device (fig. 3
point 3)

Note: if the “PW” and “OL” LEDs stay on, turn the device off and check the connections (see

Technology and components – Overload LED).

· Check that only the “PW” LED stays on, indicating that the device is working.

· Regulate the volume.

· Happy listening!

MANUAL LYM 1.0 T

PAGE 4

BACK OF AMPLIFIER

Figure 3

SPEAKER OUTPUT

DC 16-19 V

Made in Italy

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AUX1 - AUX2

INPUTS

1 2

3 4

EARTH

CONNECTION

SPEAKERS OUTPUT

RIGHT - LEFT

EXTERNAL

POWER INPUT