qualiton A50i Manual de usuario
- 01 -
Introduction
Thank you for purchasing a qualiton A50i power amplier!
It is designed to deliver a high standard of musical performance. The
innovation in engineering and manufacturing this product guarantees
amusement for a long time, thanks to the output transformer made by us.
We wish you many pleasant hours of musical experience with your
qualiton A50i!
CONTENTS
PREFACE .............................................................................................................................................. 2
CONTENTS OF PACKAGE ................................................................................................................ 3
TECHNICAL SPECIFICATION ........................................................................................................... 4
FRONT PANEL CONTROLS .............................................................................................................. 5
REAR PANEL TERMINALS ............................................................................................................... 6
INSTALLATION ................................................................................................................................... 7
SAFETY RECOMMENDATIONS - PLACEMENT ............................................................................ 8
SAFETY RECOMMENDATIONS - OPERATION ............................................................................. 9
FIRST INSTALLATION ....................................................................................................................... 11
CONNECTING ..................................................................................................................................... 12
STATUS INDICATION ......................................................................................................................... 13
REMOTE CONTROL STATUS INDICATION .................................................................................... 13
REMOTE CONTROL ........................................................................................................................... 14
REPLACEMENT OF BATTERY.......................................................................................................... 14
VACUUM TUBES ................................................................................................................................. 15
REPLACEMENT OF VACUUM TUBES ............................................................................................ 16
TROUBLESHOOTING ......................................................................................................................... 18
MARKINGS .......................................................................................................................................... 20
WASTE MANAGEMENT .................................................................................................................... 21
WARRANTY ......................................................................................................................................... 22
DECLARATION OF CONFORMITY................................................................................................... 23
- 2 -
Before installing the stereo power amplier qualiton
A50i, please study this user manual carefully!
Operating your power amplier in a manner it is de-
signed for ensures you an utmost musical experi-
ence and a reliable operation.
If you have any questions on our products or ser-
vices, please do not hesitate to contact us on our
website www.audiohungary.com
PREFACE
- 3 -
!
- 1pc qualiton a50i stereo amplier
- 1pc user manual
- 1pc standard mains cable
- 1pc remote control
- 1pc torx wrench (TX08)
- 1pc A23 battery
CONTENTS OF PACKAGE
- 4 -
NOMINAL OUTPUT POWER
2 X 50W Stereo (measured by 1 kHz sine wave; THD < 0,75%)
TOTAL HARMONIC DISTORTION
< 0.75% (f = 1 kHz - measured at maximal output power)
FREQUENCY RESPONSE
30 Hz - 70 kHz (-3 dB, measured at maximal output power)
INPUT SENSITIVITY
425 mV asymmetric input
GAIN
+33.5 dB (8 Ω); +25.5 dB (4 Ω)
INPUT IMPEDANCE
10 kΩ
NOMINAL LOAD IMPEDANCE
4 Ωand 8 Ω
OUTPUT POLARITY
non inverting
SIGNAL - TO - NOISE RATIO
> 95 dB
POWER CONSUMPTION
300 W
VACUUM TUBE SET
4 x KT120; 4 x E88CC; 2 x ECC83
WEIGHT
25 kg
TECHNICAL SPECIFICATION
- 5 -
3
1 2 4 5
FRONT PANEL CONTROLS
1
2
3
4
Main switch
Input selector rotary switch
Volume control
Status indicator LED
5LEDs indicating active input
qualiton A50i
- 6 -
1 9 10 112 3 4 12 13
!
8765
REAR PANEL TERMINALS Line input (symmetric)
(1pc mini XLR) - Left side (L)
Line input (asymmetric)
(3pc RCA) - Left side (L)
Output - Right side (8 Ω)
Line output (asymmetric)
Output - Right side (4 Ω)
Output - Right side (0 Ω)
Output - Left side (0 Ω)
Output - Left side (8 Ω)
Output - Left side (4 Ω)
Built-in fuse box in the AC socket
AC socket
Line input (symmetric)
(1pc mini XLR) - Right side (R)
Line input (asymmetric)
(3pc RCA) - Right side (R)
1
2
3
4
5
6
7
8
9
10
11
12
13
qualiton A50i
- 7 -
- Due to the vacuum tube construction of the amplier,
it may heat up during use. Thus, choose a location for
installation where the appliance can be well ventila-
ted!
- Make sure that cables connecting the amplier to the
speakers as well as cables connected to the ports of
the amplier can be effortlessly connected!
- Appliance can only operate with 50Hz frequency and
230V AC voltage. The standard AC socket and the
fuse box are placed at the rear panel.
- Never operate the amplier through an ungrounded
outlet!
- The amplier can be connected to an audio system
through RCA or mini XLR ports placed at the rear
panel.
- According to the nominal impedance of the speakers
used, the amplier outputs are speaker ports marked:
0 - 4 - 8 Ω
- With the input selector rotary switch, the chosen input
source can be activated. The activated source is indi-
cated by illuminated LEDs, from the left to the right in
order: LINE 1; LINE 2; LINE 3; LINE 4
- Never operate the amplier without a sufcient load!
Do not power up the amplier until correct loads (4 or
8 Ω) are connected to the output ports!
INSTALLATION
!
!
- 8 -
200 mm
200mm 200mm
- Avoid relocating the appliance from cold to warm
surroundings! Sudden temperature changes can
lead to moisture condensation! Please wait until
moisture is evaporated before putting your amp-
lier into operation!
- The aforesaid applies to the very rst installation
of the amplier as well. Prior to the rst installa-
tion, leave the amplier at its place of operation at
least for 2 hours!
- The appliance is designed for indoor use. Do not
operate it in wet, humid surroundings!
- Do not store any electrical device or object in a pe-
rimeter of 200 millimetres around your amplier!
- The ventilation holes of the amplier must not be
covered (by tablecloth, curtain, newspaper, book,
etc.)! Impaired ventilation can lead to overheating
and irregular operation conditions!
- Do not use the appliace next to heating sources
and radiators! Keep it away from hot or dusty en-
vironment and ame!
SAFETY RECOMMENDATIONS - PLACEMENT
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