Product Overview
The WB-1 is designed to match the impedance of the speakers to the
amplifier. Some amplifiers require an 8-ohm to 16-ohm impedance load
represented by the speakers. The WB-1 is available by order in a 2x, 4x or
8x impedance-matching configuration. When operating an 8 to 16-ohm
amplifier with speakers that represent a 4-ohm or 6-ohm impedance, the
amplifier will not operate properly. The WB-1 with a 2x configuration
allows the operation of the 4-ohm to 6-ohm speakers with an amplifier that
requires an 8-ohm load. The WB-1 with a 4x configuration will show the
amplifier an impedance of 16 ohms when operated with 4-ohm speakers.
Consult the charts below to determine which degree of impedance
matching is needed depending on the total number of speaker pairs used
with the amplifier.
NOTE: A WB-1 should be used with each pair of speakers.
2
WB-1
L+
L-
R-
R+
L+
L-
R-
R+
OUTPUT
INPUT
WB-1
Speakers
DPA-1.2 (two channel amplifier)
Speaker Cable
Speaker Cable
RCA Cable
Figure 1
0
1
2
3
4
5
6
7
8
0
-
-
2X 4X 4X 8X 8X 8X 8X
1
2X 4X 4X
8X
8X 8X 8X
2
4X 8X 8X 8X 8X
3
8X 8X 8X
4
8X
Impedance Matching For 8 Ohm Amplifiers
8 Ohm Pairs
4 Ohm P
airs
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
0
-
-
-
2X 2X 4X 4X 4X 4X 8X 8X 8X 8X 8X 8X 8X 8X
1
-
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
Impedance Matching For 4 Ohm Amplifiers
4 Ohm P
airs
8 Ohm Pairs
Connection Instructions
Connect speaker cable from the amplifier’s speaker output to the WB-1
speaker input. Be sure to keep channels and polarity consistent.
Connect speaker cable from the WB-1 speaker output to the speakers. Be
sure to keep channels and polarity consistent.
Figure 1 shows an example of the WB-1 connected to an amplifier and
one set of speakers.
3
Specifications
Power Rating: 126 Watts power handling
42 W/ch RMS continuous
Terminations: Spring-loaded terminals
Wire Size: Up to 12 gauge wire
Dimensions: 3 1⁄4"W x 2 1⁄4"H x 3 1⁄4"D
(8.3 x 5.7 x 8.3 cm)
Weight: 2 lbs. (0.9 kg)
