1. Make all antenna cable connections before connecting the unit to power.
2. Do not connect to the SPC 4500 any antenna other than the SRA 2 W or
RA 4000 W from AKG. Using other antenna types may cause malfunctioning of
the SPC 4500.
3. Use the shortest possible antenna cables (33 ft./10 m max.).
4. Position the unit such that the front panel ventilation grill cannot be covered.
Obstructing the air intake may cause the unit to overheat.
1. Unscrew the four rubber feet (1) from the antenna combiner bottom panel.
2. Unscrew the two fixing screws (2) from each side panel.
3. Use the fixing screws (2) to screw the short bracket (3) to one side panel and the long
bracket (4) to the other side panel. The brackets are contained in the supplied rack
mounting kit.
4. Install the antenna combiner in your rack.
1. Unscrew the four rubber feet (1) from each antenna combiner's bottom panel and
remove the screws (5) from the rubber feet (1).
2. Unscrew the two fixing screws (2) from the right-hand side panel of one antenna com-
biner and from the left-hand side panel of the other antenna combiner.
3. Insert one connecting strip (4) into each free slot in the side panel of the first anten-
na combiner, making sure to align the hole in each connecting strip (4) with the appro-
priate threaded hole in the antenna combiner bottom panel.
4. Fix the two connecting strips (4) on the first antenna combiner using two of the screws
(5) you removed from the rubber feet.
5. To join the two antenna combiners, slide the connecting strips (4) on the first anten-
na combiner through the free slots in the side panel of the second antenna combin-
er. Make sure to align the hole in each connecting strip (4) with the appropriate
threaded hole in the bottom panel of the second antenna combiner.
6. Fix the two connecting strips (4) on the second antenna combiner using two of the
screws (5) you removed from the rubber feet.
7. Screw a short bracket (6) to the outer side panel of each antenna combiner using for
each bracket two of the screws (2) you removed from the antenna combiner side pan-
els.
8. Install the antenna combiners in your rack.
The following hints on placing the antenna apply to any multichannel system, no matter
how many channels it may use.
Reflections off metal parts, walls, ceilings, etc. or the shadow effects of musicians and
other people may weaken or cancel the direct transmitter signal. For best results, place
the antenna as follows:
1. Place the antenna near the performance area (stage).
2. Place the antenna at least 5 ft. (1.5 m) away from any big metal objects, walls, scaf-
folding, ceilings, etc.
3. Do not place the antenna in a wall recess.
4. Place the antenna at least 5 ft. (1.5 m) away from any equipment that may emit RF
radiation such as lighting racks, fluorescent lamps, digital effects units, or PCs.
3 Getting Started
Important Notes
Rack Mounting a
Single Antenna
Combiner
Refer to fig. 6.
Rack Mounting Two
Antenna Combiners
Side by Side
Refer to fig. 7.
Setting Up Antennas
Placement
15