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Th

ankyouforchoosingtheIMP80Dimpedancematchingvolumecontrol. Speco

The IMP80D is a unique adjustable designed impedance matching stereo volume control. The impedance matching 2x, 4x, 8x or 16x

switch positions enable the IMP80D to connect up to 16 pairs of 8 ohm speakers or 8 pairs of 4-ohm speakers to a single 8 ohm stable

amplifier and operate them simultaneously without the fear of amplifier overload, eliminating the need for a speaker selector or other imped-

ance matching device.

(Note:Whenusinga4-ohmstableamplifier,youcanconnectup to32 pairs of 8 ohm speakers or up to 16 pairs of 4 ohm speakers.)

Wiring and Installation

First determine the minimum operating impedance of the

amplifier to be used in your installation. This information should

be in your amplifier owneranual. Using the speaker chart at’s m

left choose the proper position for the impedance matching

switch (see Fig. 1) and put the switch in the correct position.

Fig. 1

M

odelIM80D P

80 Watt Impedance Matching Volume Control

Recommended Switch Position 8ohm Stable Amplifier.

Connecting 2 Pairs of 8ohm Speakers

Connecting 3-4 Pairs of 8ohm Speakers

Connecting 5-8 Pairs of 8ohm Speakers

Connecting 9-16 Pairs of 8ohm Speakers

2X Position

4X Position

8X Position

16X Position

Recommended Switch Position 4ohm Stable Amplifier.

Connecting 2-4 Pairs of 8ohm Speakers

Connecting 5-8 Pairs of 8ohm Speakers

Connecting 9-16 Pairs of 8ohm Speakers

Connecting 17-32 Pairs of 8ohm Speakers

2X Position

4X Position

8X Position

16X Position

8ohm Speaker Chart

Recommended Switch Position 8ohm Stable Amplifier.

Connecting 2 Pairs of 4ohm Speakers

Connecting 3-4 Pairs of 4ohm Speakers

Connecting 5-8 Pairs of 4ohm Speakers

4XPosition

8X Position

16X Position

4ohm Speaker Chart

Recommended Switch Position 4ohm Stable Amplifier.

Connecting 2 Pairs of 4ohm Speakers

Connecting 3-4 Pairs of 4ohm Speakers

Connecting 5-8 Pairs of 4ohm Speakers

Connecting 9-16 Pairs of 4ohm Speakers

2X Position

4X Position

8X Position

16X Position

Produktspecifikationer