3
Controls_____
The rear panel layout shown below includes (right to left) the IEC ac line cord receptacle,
the fuse holder (2 A fast blow fuse required), the speaker binding posts (black is ground),
the input level control, and the RCA line input jack. A knob can be attached to the level
control if it is to be used as a volume control.
The front panel layout includes an ac power switch on the left and a pilot light on the
right. Pressing the power switch on the white dot turns the unit on. A standard IEC
detachable line cord connects the ac receptacle to a grounded 115-125 V, 60 Hz ac
supply. The chassis is connected to the ac line ground.
For normal operation with a line preamplifier, the level control should be set to maximum
position and the preamp volume control used to set the loudness level. For preamps with
high gain, it may be desirable to adjust the level control on the Stealth 5 to enable the
preamp volume control to operate around its mid position at normal listening levels.
Input/Output___
The preamp line output is connected with a shielded RCA interconnect cable to the
Stealth 5 input jack. The input impedance of 100K Ohms is high enough for driving with
any solid-state or tube preamplifier.
The speaker output is factory wired according to the customer’s specifications, typically
8 Ohms. If a different impedance is required, the output circuit must be re-wired
internally. Consult Mapletree Audio Design or a qualified technician. The output
transformer wiring diagram is included in the appendices of this manual.