Notes
The following hints and tips are provided so that you can get the best performance out of your Laney valve amplifier.
These are only guidelines and should be adapted for your own preferences:-
1: Valve amplifiers take a short time to 'warm up' to optimum operating temperature. To get optimum performance out of
your TT amplifier allow the amplifier to 'warm up' for three mins. before you begin playing.
2: The position of an amplifier in a room has an effect upon the overall sound characteristics. If you wish to increase the
bass response of your amplifier place the amplifier on the floor. If you wish to reduce the bass response of your amplifier
place the amplifier on a stand.
3: Do not place you amplifier hard up against a wall as this will reduce the air circulating around the back of the unit and
may result in overheating.
4: Connecting your guitar to either the 'Hot' or “Normal” input has an effect on the sound, regardless of the guitar
type/pickup configuration. The 'Hot' socket provides more gain and extended treble, but with less BASS. The 'Normal'
socket provides a full range signal with extended low frequencies and lower gains. You should experiment with both inputs
to find the one which suits your guitar, style of playing and gives you the most tonally pleasing results.
5: When using the 'BRIGHT SWITCH' on the amplifier keep in mind that it has a greater audible effect the lower the amount
of distortion produced by the preamplifier. At some distortion levels the 'BRIGHT SWITCH' may appear to have no effect at
all.
VALVE REPLACEMENT AND TROUBLE SHOOTING
The valves in your new valve amplifier will eventually need replacing due to wear, this is normal with valve amps. In most
instances you should be able to effect valve replacement yourself without incurring the costs of a service engineer.
Following are some of the most likely symptoms of valve malfunction and a suggested method of correction.
Normally valve amps give optimum performance when fitted with matched sets of output valves as factory fitted to all
Laney valve amps. NB: Damage will not occur by not fitting matched sets although the amplifiers performance may be
impaired.
Symptom 1
Amp connections have been performed correctly but power light fails to illuminate
Solution 1
Check time delay POWER FUSE and replace if necessary:-
230V - T500mAL 250V
115V - 1AL 250V
100V - T1AL 250V
Symptom 2
Power light illuminates, no sound out put
Solution 2
Check secondary HT fuse and if the LED is lit then the fuse has blow. Replace with: -
T100mAL 250V
Symptom 3
Secondary HT fuse (T100mAL) blows repeatedly. This is a strong indication of a damaged output valve. The following
chart shows the valve layout and the function each performs.
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