Rear Panel And Connections; Vacuum Tube Installation - ModWright Instruments KWH 225i Owner's Manual

Rear Panel and Connections:

 Power entry module – center.
 Binding posts – Right and Left, marked '+' and '-'.
 Three sets of RCA inputs, labeled 'CD', 'L1', 'L2'.
 One set of XLR inputs, labeled 'L3'.
 One set of RCA HT/BP – Home Theater Bypass (Also function as Preamp Inputs).
 One set of RCA preamp outputs. Input source selected is always present at RCA preamp
outputs and may be used to drive a second or different amplifier.
 Cover plate may be removed when optional Phono is installed.

Vacuum Tube Installation

 Location: in blue sub-enclosure, in the rear, center of the top of the amp.
 Basis of design is 6922/ECC88. Suitable subs include 6dj8 and 7309
 Line up tube with 9-pin socket and firmly but gently push down on the tube until it seats.
 If the tube does not fully seat in the socket, remove and check to see if any pins are bent.
 Tubes are self-bias and require no adjustment or maintenance.
Installation in rack or cabinet and required clearance
 Min. 2" in all directions required for adequate ventilation, top, sides and rear.
 Do not install in an enclosed cabinet unless temperature controlled.
 Heat sinks must reject heat and as such should never be blocked or covered.
 Do not install gear on top of or beneath the KWH 225i.
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