Advertisement
5. Determine the total number of 8 ohm pairs of speakers. (columns on charts)
6. Follow the appropriate row and column to determine jumper settings. (ex. see fig 2)
Impedance Matching For 4 Ohm Amplifiers
0
1
2
0
-
1X 1X 2X 2X 4X 4X 4X 4X 8X 8X 8X 8X 8X 8X 8X 8X
1
1X 2X 2X 4X 4X 4X 4X 8X 8X 8X 8X 8X 8X 8X 8X
2
2X 4X 4X 4X 4X 8X 8X 8X 8X 8X 8X 8X 8X
3
4X 4X 4X 8X 8X 8X 8X 8X 8X 8X 8X
4
4X 8X 8X 8X 8X 8X 8X 8X 8X
5
8X 8X 8X 8X 8X 8X 8X
6
8X 8X 8X 8X 8X
7
8X 8X 8X
8
8X
Example: The table to the right shows
an 8 ohm minimum impedance
amplifier with 1 pair of 4 ohm speak-
ers and 3 pair of 8 ohm speakers. The
chart indicates the jumper setting
should be set at 8X
CONSIDERATIONS
1. Make sure that your amplifier has adequate wattage for the number of speakers. Watts
per channel divided by the number of pairs should equal or exceed the individual
speaker's minimum wattage requirements.
2. You must use an UltraMatch™ volume control for each pair of speakers.
3. Every jumper setting must be set on the same setting throughout the system.
4. A minimum speaker load of 4 ohms can be connected to the output of each
UltraMatch™ volume control.
EZB CONNECTING BLOCKS
The EZB-1 and EZB-2 connecting blocks are Russound accessories that simplify connections
of multiple volume controls and speaker pairs. The EZB-1 is a neat, compact wiring device
capable of connecting four volume controls to an amplifier's outputs. The EZB-2 expands the
EZB-1 to another 4 volume controls. Multiple EZB-2's can be used to expand the system to
sixteen volume controls.
Fig 2 Impedance Matching Charts For UltraMatch™
8 Ohm Pairs
3
4
5
6
7
8
9
10 11 12 13 14 15 16
Impedance Matching For 8 Ohm Amplifiers
0
1
0
-
1X 2X 4X 4X 8X 8X 8X 8X
1
2X 4X 4X
2
4X 8X 8X 8X 8X
3
8X 8X 8X
4
8X
8 Ohm Pairs
2
3
4
5
6
8X
8X 8X 8X
7
8
5
Advertisement
