Whenever you perform any service or modification to the Eklipse Pre-Amplifier, make sure the device has been disconnected
from the mains and leave the work to a professional only!
The design of the circuit board allows you a view upon the most important element that might be subject to service or
modification.
The circuit board provides you with a blueprint of the amplifiers design and gives you full view of the components that ma
be most interesting to you, the user.
The four tubes are identical, and are part of the ECC 82 family. This renders the amplifier relatively o verloadproof. The two
lefthand side tubes provide the input to one channel, the righthand tubes take care of the other channel. The amplifier
transmits phased amplified signals, which means you do not have to bother about your speakers’ polarity as long as you stick
to the colourcoding of your cables.
Paramount for the sound quality are both lefthand tubes (the entrytubes), since they amplify the signal being put into them.
Please don’t economise on these tubes. The righthand tubes (the exittubes) are much less demanding when it comes to
quality.
When you think the AC current entering your amplifier is out of phase with the amplifier, you might considder switching
both wires under the tripolar connector on the upper righthand side. Thus you reverse the AC flow, and therewith the
polarity. Never do this when the amplifier is still connected to the mains. Please considder having having this modification
done by a professional electrician.
Another worthwhile subject is the 4 fuses that are par t of the double mono channels. The 0.5 Ampere fuse deals with the
anode current, the 3.15 Ampere fuse warrents against overheating of the respective channels. As a rule of thumb, these fuses
never blow since the current is automaticaly modulated to acceptable levels at startup.
Should a fuse blow regardless, never change it for a fuse with different specifications
Fuses blow for a reason. Eventhough AUDIO VALVE equipment is made to last untill the end of time, sometimes things do
break. Ask for our help w hen this happens.
When you decide to replace pin-compatible tubes, always switch the Eklipse amplifier off before doing so. And make sure all
pinns actually enter the sleeve of the receptor. Pins have a tendency to wander outside their assigned realms...
