background image

the power socket after each use to help you remember to set the voltage to the

correct mains value when you next attempt to plug in a power cord.

POWER SOCKET

Standard 3-pin socket for IEC mains cable.

ALWAYS ENSURE THE UNIT IS EARTHED.

We recommend that you plug the unit into a surge protector rather than directly

into a wall socket.

Maintenance

Replacing Valves

It is likely that the valves will need replacement after a few years. If you hear a new

noise such as crackling, sputtering, ringing, squeeling, white noise/hiss or hum, or if the

amplifier stops producing sound altogether, you should try to replace one of the valves

to see if that fixes the problem. The VOD-50 uses two double triode valves, an ECC83

(a.k.a.

12AX7

) and an ECC82 (a.k.a.

12AU7

). To begin valve replacement, unplug the

amplifier, and allow the valves to cool for ten minutes. Unscrew and remove the back

metal grille.

EFFECTS

SEND

RETURN

INSTR

LINE

ECC83

ECC82

Looking at the chassis from the back, the ECC83 is on the

far right as in the picture on the right. Make sure the back

of the amplifier cabinet is well lit and and that you can

clearly see the valve sockets. We recommend sitting be-

neath a bright light and placing the amplifier upside down

on your lap. Twist anticlockwise and slide the screen off

the valve that you want to replace. Pull the valve out

while

gently

rocking it back and forth. When reinserting a new valve, make sure you

can clearly see that the pins are lined up with the socket slots and push it in slowly to

avoid damaging the valve or socket.

7

Summary of Contents for VOD-50

Page 1: ...VOD 50 Owner s Manual...

Page 2: ...Contents Precautions Warnings 2 Overview 3 Block Diagram 3 Front Panel 4 Back Panel 6 Maintenance 7 Replacing Valves 7 Replacing Fuses 8 Cleaning 8 Warranty 8 1...

Page 3: ...pairs or servicing should be carried out by Rajani Ampli ers or by an authorised service centre Immediately turn the unit o remove the power cord from the outlet and request servicing by your nearest...

Page 4: ...ns as big stages The boost and lead channel switches as well as the gain controls have been designed as wide band mid boosts and act to keep your tone balanced at all settings An active 2 band EQ lets...

Page 5: ...that big open sound that you can only get from overdriven valves CLEAN A wideband mid boost control which adds volume and crunch on the clean channel Meticulously voiced to maintain your tonal balanc...

Page 6: ...dd a lot of sparkle and depth while eliminating mud This makes the reverb equally suited to the lead as the clean channel and it is intended to be used as an always on e ect VOLUME This master volume...

Page 7: ...amp whereas LINE is for professional rack e ects units or the input of an audio interface or cabinet simulator When not using the e ects loop set the level to LINE for lowest noise operation SPEAKER J...

Page 8: ...50 uses two double triode valves an ECC83 a k a 12AX7 and an ECC82 a k a 12AU7 To begin valve replacement unplug the ampli er and allow the valves to cool for ten minutes Unscrew and remove the back...

Page 9: ...o us under the warranty In any other circumstances blown fuses should be replaced with ones of the same type and rating only by a quali ed engineer Cleaning To clean the unit use a soft dry cloth or o...

Page 10: ...rajaniamps com 9...

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