Magnet SA-4 User manual

Magnet SA-4
Integrated Amplifier
Operation Manual
Magnet Technology Corporation
Room 509, 5th floor
Hi-Fi Center, Patumwan, Bangkok 10330 THAILAND
Tel: [phone] Fax: [phone] Email: [email protected]

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IMPORTANT 1
The lightning flash with arrowhead, 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
.
CAUTION:
TO PREVENT THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE COVER (OR
BACK). NO USER-SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
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 PREVENT FIRE OR SHOCK HAZARD, DO NOT OPEN OR
EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
(FOR CANADIAN MODEL)
CAUTION: TO PREVENT ELECTRIC SHOCK DO NOT USE THE
PROVIDED AC PLUG WITH AN EXTENSION CORD, RECEPTACLE OR
OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO
PREVENT BLADE EXPOSURE.
AVIS: RISQUE DE CHOC ELECTIQUE. NE PAS OUVRIR.
ATTENTION: POUR PREVENIER LES CHOCS ELECTRIQUES NE PAS
UTILISER CETTE FICHE POLARISEE AVEC UN PORLONGGATUER, UNE
PRISE DE COURANT OU UNE AUTRE SORTIE DE COURANT, SAUF SI
LES LAMES PEUVENT ETRE INSEREES A FOND SANS EN LAISSES
AUCUNE PARTIE A DECOUVERT.

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Preface
Thank You for purchasing the Magnet SA-4 Integrated Amplifier. You have selected a component
which has been designed to exacting standards to provide you with years of listening pleasure. It
is important to remember that all Magnet’s products can provide high quality sound, if you take
proper care in setup. Your selection of associated components and cables is critical to the results
which you will experience. Careful room set-up of your audio equipment is also necessary to
realize all the potential from the your audio system.
As with all Magnet’s products, the SA-4 has been carefully designed, manufactured and tested to
ensure Magnet’s high quality and reliability. This is a product that you can be sure of sound,
quality and high value. We wish you many happy memories with MAGNET.
The SA-4
The SA-4 is an Integrated Amplifier designed to use with line level program sources. It is a perfect
choice for new users who want high quality sound at an affordable price. The SA-4 represents
the perfect combinations of smart engineering, creative purchasing and good production
techniques. It is capable of delivering excellent sonic performance.
The SA-4 features 6 line level channel inputs with Treble and Bass TONE function switch . The
TONE function enable you to adjust the bass and treble level. When not using the TONE
function, the input signal will bypass the TONE control circuit. The separated Pre-amp and
Power-amp sections enable the SA-4 to be use as separate pre-amplifier and power amplifier. It is
an option for modification or upgrading in the future.
With an accurate frequency response of less than +/- 0.1dB from 20-20,000 Hz and
THD+NOISE of less than 0.01% at full power, the SA-4 specifications show how precise the SA-4
can reproduce your music. You can be sure of every sound you hear is an accurate reproduction
of the original performance. At 30 Watts of amplification per channel, the SA-4 contains a
massive capacitance power supplies of over 13,000 μF. This will help the SA-4 to creates a clear
and warm midrange and a low and tight bass.
1% tolerance metal film resistors, Wima capacitors, Alps potentiometers and selector and
aluminum anodized faceplate are just a few features of this quality Hi-end product.
Precautions
Before proceeding with the installation, please read the instructions carefully to avoid damage
during operation. If you have any problems, do not hesitate to contact our Sales or Service
Department.
Save this Operation manual for latter reference.
1. All warnings on the unit and in the operation manual should be adhered to.
2. This unit should not be used near water or in humid condition.
3. Do not touch any parts inside the machine in order to avoid electric shock.
4. The operating temperature range is +5 to +35 °C. Operating humidity is 5% to 80%.
Do not operate the unit when the temperatures and/or humidity are outside of this range.

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5. Before connecting or disconnecting any cables, always turn off your equipment.
6. Before turning the power ON/OFF, turn your volume control to the lowest output level.
Connections
Note : make all connections to and disconnection from the SA-4 with AC Power disconnected
and all system components switches “OFF.”
1 2 3 4 5 6 7 8 12
9 10 11
INPUTS The SA-4 has a total of 6 line level inputs.
1. CD receive signals from Compact Disc player.
2. TUNER receive signals from Tuner.
3. LASER receive signals from Laser Disc player.
4. VIDEO receive signals audio out of VCR.
5. LINE receive signals from line level input.
6. TAPE receive signals from cassette tape player.
REC (Recording output monitor)
7. REC Send output signals from selected program source to Cassette tape input. To record
from the program source onto Cassette tape, turn the selector switch to the source program
you wish to record and press record on the cassette tape player.
8. PRE-OUT / MAIN-IN With the U-link connected, the SA-4 is an integrated amplifier.
Disconnected the U-link, the SA-4 functions as separate pre-amplifier and power amplifier.
PRE-OUT is the output from the preamplifier section. MAIN-IN is the input for the power
amplifier section.
9. SPEAKERS Connect to your loudspeaker. Ensure that you have the correct phase and
channel output to your speaker.
10. UNSWITCHED This is an unswitched (not controlled by the front panel POWER switch)
AC out. The maximum output current is 1 Amp.

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11. AC POWER Connect the SA-4 to an AC power source only of the type describe in these
operating instruction or as marked on the rear panel of the unit.
Make sure to have the proper power voltage rating to match with your SA-4.
12. FUSE Replace only with same type of fuse as marked on the rear panel.
Functions
1 2 3 4 5 6 7 8
1. POWER Pressing the POWER button once on the front panel will turn the machine on.
The LED on the front panel will light up when the machine in ON.
Press POWER again to turn the machine OFF. The LED will fade off when the power is off.
2. BALANCE Turning the balance level will lower your output level left/right. Leaving it in
the center will give you equal output on both channels. Sometimes in unequal source
recording, you may need to adjust the balance level to get a balanced stereo image.
3. TONE Press the TONE switch to activate TREBLE and BASS circuitry. When not
engaged (not pressed in) the signal will bypass the TONE circuitry.
4. BASS For adjustment of lower tone. Turning the BASS level will boost or cut the bass
level of your output . Leaving it in the center will give you a flat frequency response output.
5. TREBLE For adjustment of higher tone. Turning the TREBLE level will boost or cut the
treble level of your output. Leaving it in the center will give you a flat frequency response
output.
6. TAPE Press the Tape switch once to select TAPE input as the source. Press TAPE once
more to un-selected TAPE mode.
7. CD/TUNER/LASER/VIDEO/LINE/TAPE Turn the select knob to your desired source input.
8. VOLUME For adjust of the output level.

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Troubleshooting Guide
If the machine is not working properly please check the symptoms below and follow the
corrective suggestion. If the problem still occurs, please contact our service department.
Symptom Remedy
1. Unit does not power up/no LED on. - Confirm AC is plugged in properly.
- Check if fuse is still good.
2. No sound. - Check speaker cable connection.
- Check interconnect cable connection.
- Check U-link connection.
3. One side sound. - Check speaker /interconnect cable connection.
- Check the BALANCE on pre-amplifier,
make sure that it is in the middle position.
4. Low bass sound. - Check speaker cable phase connection.
5. Balance not tune in - Check speaker phase connection.

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Specifications
LINE AMPLIFIER SECTION
Frequency Response (20-20,000Hz) + 0.09, -0.03 dB
THD+noise @ 1 Vrms (20-20,000Hz) <0.01%
Input Impedance 50K Ohms
Maximum Gain 15.5 dB
Signal / Noise 98 dB
Maximum Output at 1K 7 Vrms
POWER AMPLIFIER SECTION
Frequency Response (20-20,000Hz) +0. -0.09 dB
THD+Noise (20-20,000Hz) <0.01%
Input Impedance 50K Ohms
Maximum Power Output (into 8 Ohms) 30 Wrms per channel
Input Power As marked on the rear panel
Power consumption 150 W
Size 17"W x 3.75”H x 12.”D
Weight Net 6.4 Kg, Shipping 7.4 Kg
Warranty Information
1. MAGNET Technology Corporation(hereinafter referred to as MAGNET) warrants to the
original retail purchaser only, that its product is free from defects in material and
workmanship under normal use and authorizes free service and/or parts exchange at any
MAGNET Authorized Service Station only, for a period of ONE year from the date of
purchase.
2. The warranty is subjected to the following conditions and limitations. The warranty is void :
if product has been used other than in accordance with the instruction in the owner’s
manuals: abused or misused or is due to the product being repaired or tampered with by
anyone other than Magnet Technology Corp. or an authorized repair center.
3. The warranty does not apply to defects or failure caused by unauthorized parts, improper
maintenance, fire, flood, lightning or other natural causes.
4. This warranty does not include the damage of external parts i.e., faceplate, knobs, metal
casing, etc.
5. A returned product must include a copy of the Warranty Certification and the bill of sale.
6. The warranty does not extend to any incidental nor consequential cost or damages to the
purchaser.