Quicksilver Audio Sixty Watt Mono Amplifier
Operating Instructions
Thank you for purchasing the Quicksilver Audio Sixty Watt Mono Amplifiers.
These amplifiers have been engineered to have a very wide band width, extremely low distortion, and
superior dynamic range.
The output transformer used in this amplifier is based on the best designs of the past but uses superior
new materials to achieve a very high level of performance. The high frequency characteristics of this
transformer are very stable. Many different output tubes may be used without the need for circuit
changes or compensation adjustments.
This is an all-tube design and uses no circuit boards or transistors.
WARNING
This device has very high internal voltages. Never operate with the bottom removed!
Never operate your amplifiers with the speakers disconnected.
To prolong the life of your amplifiers, never turn them off and then on within a short period of time
(45 seconds.)
PLACEMENT
The Sixty Watt Mono Amplifiers should have at least 6 inches of ventilation space on either side and at
least 6 inches above them. If this is not possible, then use a fan for cooling.
SPEAKER CONNECTION
Five-way binding posts are used for speaker connection. For a better sonic performance, we
recommend using the screw-down part of the post rather than banana plugs to connect your speaker
wire. Make sure the ends of the speaker leads do not touch each other. The rating on the back of your
speaker system will determine whether you use the 4 or 8 ohm tap for the positive lead. Connect the
negative or ground to the black post.
There is a diagram on the bottom of the amp that identifies the three posts labeled 4 ohm, C, 8 ohm:
Use the 4 ohm tap for speakers from 4 to 8 ohms impedance or the 8 ohm tap for speakers from 8 to 16
ohms.
3 AMP SLO-BLO FUSE
Standard fuse value must not be exceeded. If a fuse blows, replace and check output tube bias. If there
is a large change, then an output tube is probably damaged. If the bias has not changed, then the cause
of the fuse blowing may be due to other problems, such as poor system grounding, unstable preamp,
shorted speaker, etc. Interchanging the amps between channels will help localize the problem to either
the system or the amplifier.
TUBES
The input tubes in this amplifier were chosen for their specific performance characteristics. These
tubes should last between one and two thousand hours. We can only guarantee the performance of this
unit when used with input tubes supplied by Quicksilver Audio.
4 C 8
Input
100K
