16
6. ADVANCED FUNCTIONS
6.1. Power Selector, alternative output tubes
The Power Selector allows adjusting the RE 320 in accordance to the output tubes. Position HIGH
is reserved for the standard KT 150 or KT 120 tubes. In the HIGH Position the RE 320 is able to
deliver up to 200 W RMS Output Power. The slightly weaker tubes type KT 88 or 6550 can be used
in the position LOW. In this position the maximum output power is limited to 75 W to avoid overloading
these tubes. The rather rare tubes of type KT 90 and KT 100 can be used also in the LOW position.
The EL 34 can be used in the LOW Position in cases of speakers with an impedance higher than 6
ohms.
Tubes of Type 6L6, KT 66, 5881 are not recommended for the RE 320
EL 519 and EL 156 are not suitable for the RE 320.
Before switching the Power Selector turn OFF the mains rocker switch
After switching from power LOW to HIGH and vice versa the BIAS should be corrected in case of
using the same output tubes. Normally there is only a slight correction necessary.
When using different tubes the BIAS has to adjust according to chapter 7.3
6.2. Soft-Start, Inrush current limitation
The RE 320 input and output tube heaters as well as its high-voltage rails are logic controlled to
ensure that the conduction of the output tubes as well as input stage voltages are constantly
monitored and controlled by the
Power Management system
to protect the vital internal parts
(tubes, rectifier, electrolytic caps, switches, etc.) against excessive turn-on current. This increases
the lifetime not only of the tubes, but also the caps, while all power related components derive benefit
through this system.
The Soft-Start is always activated within the first 60 seconds after the unit is switched on. During this
time you cannot listen.
During the Soft-Start-phase, adjusting the BIAS is not possible.
Position „HIGH“:
KT150, KT120
Position „LOW“:
KT88, 6550, KT90, KT100
(EL34 with Restrictions)
Summary of Contents for RE 320
Page 1: ...RE 320 Owner s Manual English ...
Page 33: ...34 ...
