H I G H P O W E R S P E A K E R S E L E C T I O N S Y S T E M

Using the HPS Series with Tube-Type Amplifiers Virtually all tube amplifiers must have a load connected at all times. If the amplifier to be connected to the HPS-4/HPS-6 is a tube amplifier, be sure to always have at least one pair of speak- ers switched on at all times. An alternative is to permanently connect a 150 ohm, 5 watt resistor across the tube amplifier’s output in parallel with the HPS-4/HPS-6. See (Figure 1).

H I G H P O W E R S P E A K E R

AMPLIFIER

SPEAKER

4

S E L E C T I O N S Y S T E M

Figure 3

Removing the Connectors

“Tech Tip”

Wire size is

expressed by it’s

AWG (American Wire Gauge) number. The lower the AWG num- ber, the larger the wire, i.e., 12 AWG wire is physically larger than 14 AWG.

Installation

1.Select a convenient mounting location.

2.Run all the necessary. Label the wires for future reference. See (Figure 2).

3.Make the connections to the speaker selector. The amplifi- er/speaker connectors on the HPS are removable. If you wish, you may remove the HPS’s connectors to facilitate installation see (Figure 3). Strip 3/8" of insulation from the end of each wire. Tightly twist the end of each wire until there are no frayed ends. Insert each wire into the appro- priate hole on the connector terminals. Be certain that proper phasing is observed—connect the positive termi- nals on the HPS to the positive terminals on the amplifier and speakers and the negative terminals on the HPS to the negative terminals on the amplifier and speakers. Re-install the connectors if they were removed. See (Figure 4).

Insert the connector plug into the socket and lock in place- by tightening captive screws on each side of connector.

4.Affix the appropriate label to the recessed area over each on/off selector button.

SPEAKER

PAIRS

 

 

AMPLIFIER

Figure 4

Installing the Connectors

5

10

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Niles Audio HPS-4/HPS-6 specifications Installation, Removing the Connectors, Tech Tip Wire size is Expressed by it’s