Yerasov Classic 45 User manual

Tube guitar combo amplifier
User manual

CONTENTS
1. ........…………………………………………...................................1
2. ………………………………………………………........2
.....…..…………..………………………………….........................2
..… …………………………………………....................3
3. ……........………..…………………………………….…….3
4. ..................................................……................................4
5. ..……......………………………………….....................4
6. …….…...…………………………………………..............................4
7. ………………………………………….................................................5
Precautions
General information
Top panel
Rear panel. ..............
Operating Instructions
Troubleshooting
Technical Specifications
Delivery
Guarentee

Allow the amp to warm up for a few minutes before playing.
Allow the amp to cool for a few minutes before moving.
Do not store or use the unit in a damp environment.
Do not place the device in direct sunlight or near a heater.
When connecting to a power supply, make sure that its voltage
matches the requirements of the unit. The socket must be also
be earthed.
In the event of a fire, unplug the power cord of the unit.
If the appliance is not used for a long period of time, it must be
disconnected from the power supply.
Before replacing the valves, make sure that the appliance is
disconnected from the power supply.
Avoid touching the hot valves.
Protect it from shocks.
The unit requires good ventilation.
Do not use solvents to clean the cabinet, use a clean, dry cloth.
1 . PRECAUTIONS
1

1-
2-
LO - GUITAR low resistance INPUT - input jack for connecting an electric
guitar
HI - GUITAR high resistance INPUT - input jack for connecting an electric
guitar
3 - BASS - bass control knob
4 - TREBLE - treble control knob
5 - VOLUME - volume control knob. volume control simultaneously adjusts
the volume and sensitivity of the channel. In the initial position the sound
remains clean. As the volume is increased the amp moves smoothly into
creamy overdrive.
6 - LINE INPUT - line-in jack for connecting an external preamp
7 - CLASS A/CLASS AB - class A/AB switch
8 - ANODE - standby switch
9 - POWER - the power switch
10 - LED power indicator
2.GENERAL
The top panel
2
2
1 3 45678 9 10
The Classic 45 is a compact 10 watt CLASS A/45 watt class AB valve
guitar combo amplifier, which gives a clean, warm and rich sound.
Exceptionally easy to use, combined with the possibility of obtaining a
clean and warm overdriven tube sound at sensible volumes.
The new model has several advantages over its predecessor. Along
with having a line level input for external preamp the Classic 45 has
significantly reduced background noise, especially when used at low
volume. The volume control is smoother and more gradual, also the
circuit uses film capacitors WIMA, and the output valves are of higher
quality. The Power on and off switch is made by the French firm APEM
for more reliability. The amplifier uses valves 2x 12Ax7(2xECC83), 2x
6L6.

1 - Power Cord
2 - Fuse
3 - Jack built-in speaker or external cabinet 8-ohm
4 - 2x6L6 pover amp tubes
5 - 2x12AX7 (2xECC83) pre amp tubes
Rear panel
3.
OPERATING
Plug the cord into the guitar jack socket INPUT. Turn
the power switch to ON. When the LED lights
wait 30 seconds for the valves to warm up before playing.
3
1 3 5
4

4. TROUBLESHOOTING
4
5. SPECIFICATIONS
:
………………………………………….........................1
…………………………………………........................100
CLASS A,……………….……………………...............................................10
CLASS AB......................……………..………………………...................... 45
………..……………………………............................
………………………………............................120
………………………….……………….........................17
Tubes............................................................................
....................... ............ 30
Input resistance
Guitar input, MOhm
Line input, kOhm
Output power, W
Powered by a 50 Hz, in 230 ± 23
Power consumption, W, not more
Weight (net), kg, not more ..
2x6L6, 2x12AX7 (2xECC83)
Speaker ......................................... Celestion Vintage
In some cases, you may encounter problems such as noisy valves, howling
and internal valve faults. All valves have a finite lifespan. If problems occur
it may be easily rectified by replacing a valve. A faulty valve may be
identified by knocking the valve body which may exhibit extra noise. But be
aware that some noise when knocking a preamp valve can be a natural
phenomenon. When a pre amp valve (12AX7) fails it should result in
continuous microphonics.
The simplest solution is to replace a faulty valve with a known good one.
Sometimes it is enough just to change valve places.
The faulty valve may be removed when cold by using a gentle circular
motion after nun plugging the amp from the mails.
Always install a serviceable valve.
6. DELIVERY
.……………………...………........................1
…….……………….........................................................1
………………………………………..........................................1
……………………………………………………...................1
Guitar Combo Amplifier Classic 45 units
AC fuse (spare) T2A, units
Operating instructions
Container packing, items

5
7. GUARANTEE
Warranty period 12 months from the date of purchase.
During the warranty period, the owner is entitled to a free repair.
Caution: In the absence of the warranty card and the receipt of purchase
the warranty period will be calculated from the date of manufacture of the
product.
Warranty does not cover:
- Products that have mechanical damage;
- Violation of the consumer operating conditions;
- In the case of self-repair or modify.
* The valves included with the product are a consumable product and the
warranty on them is for 1 month from the date of receipt of the product.
Combo amp
Ser. Number ___________________
Date of manufacture_____________
(Filled by the manufacturer)
Combo amp
Ser. Number ___________________
Release Date __________________
TCI representative _______________
--------------------------------------------------------------
(Fill-trading company)
Sale Date ______________________
Seller _________________________
Stamp shop ____________________
Classic 45______________
Classic 45______________

YERASOV MUSIC CORPORATION
www.yerasov.ru e-mail: [e-mail]