Hookup & Security Advices
Carefully select a place for setting up the Kultube. The unit should be situated away from heat sources and direct sunlight. Avoid installation in environments exposed to vibrations, dust, heat, cold or moisture. Keep the unit away from transformers or motors or any other unit that could generate large variations in power supply or cause electrical interferences. Do not install the unit in proximity to power amplifiers or digital processors. You may consider placing it in a rack containing other analog gear. Such placement can prevent interfe- rence from Word Clock, Smpte, MIDI, etc.
•Do not open the case. You may risk electric shock and may damage your equipment.
•Leave repairs and maintenance to a qualified service technician. Should foreign objects fall inside the case, contact your authorized dealer or support person.
•To avoid electric shock or fire hazards do not expose your unit to rain or dampness.
•In case of lightning unplug the unit. Please unplug the cable by pulling on the plug only; never pull on the cable.
•Never force a switch or knob.
•To clean the case use a
•Please support the back of the unit whenever it is being mounted into a 19 inch rack (especially important when touring).
Power Supply
Built around a torroidal transformer, the power supply allows for a minimal electromagnetic field with no hum or mechanical noise. The power supply‘s output side is filtered by an RC circuit to extract noise and hums caused by your power service. 6000 µf capacitors smooth out the positive and negative half waves. An additional power supply filter is placed before the power switch to eliminate disturbing influences.
All signal processing components are supplied with two separate current regulators to exclude influences from the remaining components.
The 220 v current for the tube stage power is smoothed out with 200 µF and stabilized precisely by current regulators. A current limiting ensures a sparing warm up phase. The anode current is switched on after warm up. Both measures ensure a remarkable extension of the tube‘s lifetime.
The supply voltage can be set to 230 V/50 Hz or 115 V/60 Hz. Check your country‘s power requirements for the appropriate setting. An AC power cord is included to feed the
The main fuse is rated at 315 mA for 230 v and 630 mA for 115 v.
Chassis ground and AC ground can be physically disconnected with the “GND Lift” switch on the rear panel to eliminate hums.
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