7
The Speaker Wire
If speaker wire is not already terminated, remove
½ inch (12.7mm) of insulation from the wire end
and twist the strands together. For runs under 25
feet (7.6m), use at least 16AWG wire. For runs
under 50 feet (15.2m) use at least 14AWG, and for
longer runs up to 100 feet (30.5m), use 12AWG.
12AWG, being the larger wire, can be used in all
the above cases if desired. The above guidelines
are for 8 Ohm connections. When using 4 Ohm
speaker connections, subtract 2 from the gauge. For
example, a minimum gauge for a 50 foot 4 Ohm run
would be 12AWG. For guide, see Figure 07.
Generally, thicker gauge wire is better than thinner
until it doesn’t fit in the Binding Post’s hole.
Loudspeaker Wire Gauge Guide
Impedance
25 feet
(7.62
meters)
or less
50 feet
(15.24
meters)
or less
100 feet
(30.48
meters)
or less
4 Ohms
14AWG
12AWG
10AWG
8 Ohms
16AWG
14AWG
12AWG
Connecting to the Binding Posts
McIntosh patented gold-plated Solid Cinch™
Speaker Binding posts assure the best connection to
all speaker cables.
When connecting the speaker wire to the MC830’s
Binding Posts, please follow these steps:
•
Make sure AC Power is disconnected
•
Pay close attention to the Polarity (+/-).
Proper Polarity must be maintained for all
connections
•
Rotate the end of the Binding Post Post
counterclockwise until an opening appears
(see Figure 09).
•
Insert the Loudspeaker hookup cable into the
Binding Post’s opening or the cable spade lug
around the center post of the Binding Post
(see Figure 09).
•
Rotate the end of the Binding Post clockwise
until it is finger tight
•
Attach the supplied McIntosh Wrench to
the top of the Binding Post using either set
of three prongs. One set of three prongs is
at the very end of the Wrench and the other
set is located 90° from there. Either set will
work. Fit the prongs in the holes on the top
of the Binding Post. The larger prong will
fit in the center hole. Rotate the Binding
Post one quarter of a turn (90°) to secure the
Loudspeaker cable connection (see Figure
10).
Do not over tighten
Top View
Power Control (Trigger) Outputs
Power Control allows the MC830 to send (OUT)
and receive (IN) On/Off signals to/from other
McIntosh equipment. In this way, powering on or
powering off a single component can do the same
for multiple units.
The Power Control Input Jack (PWR CONTROL
IN) accepts an On/Off signal from +5 to +12 volts.
The Power Control Output will provide a +12 volt
signal with a total current up to 25 mA. Connections
are made using an 1/8 inch stereo mini phone plug
with the following wiring:
Power
Control
Meter
Illumination
Control Ground
The MC830’s Meter Light can be controlled by a
connected McIntosh Preamplifier connected through
PIN 1
PIN 2
PIN 3
Figure 06– XLR pin diagram
PIN 1: Shield/Ground
PIN 2: + Signal
PIN 3: - Signal
Figure 07– Loudspeaker Wire Gauge Guide
Figure 09– Tightening Binding Post
Figure 10– Mini plug for Power Control (Trigger)
Figure 08– Opening Binding Post
