Parasound SPS140 User Manual

O W N E R ' S M A N U A L

S/PS-140 Loudspeaker Selector

Congratulations on your purchase of this precision component and thank you for your selection of
Parasound. We designed your Parasound S/PS-140 to switch up to four pair of speakers with the output
of one amplifier. The S/PS-140 also has switchable protection to prevent amplifier overload.

S/PS-140 Loudspeaker Selector

1

2

3

4

Protect

Product Overview

In many home audio systems, it is desirable to be able to listen to music in more than one area. For
example, you may have pairs of speakers in the living room, dining room, kitchen and patio that you
want to drive with a single amplifier. The S/PS-140 gives you the capability of switching on any or all
four pairs of these speakers depending on where you want to hear music.

Unpacking the S/PS-140

Unpack your S/PS-140 and save the carton and packing inserts for safe transport in case you move or in
case the unit should ever require repair. You should find the following items within the packing carton:

〈 The S/PS-140
〈 20 Gold Plated Spade Lugs with Insulators
〈 This manual

Location of your S/PS-140

Place your S/PS-140 in a location which lends convenient access to the speaker switches and try to place
the S/PS-140 near the power amplifier so you can keep the speaker wires relatively short.

Rack Mounting your S/PS-140

The S/PS-140 will occupy a single rack space in a standard 19" equipment rack when you fasten it to
another half width product such as the Zamp, or R/EQ-150. If you plan to rack mount the two half width
products together, call Parasound Technical Services to order the necessary rack mounting hardware.

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Making Connections to your S/PS-140

Connections to
Power Amplifier

+

R

ININ

L

+

+

1

R

L

+

+

R

Connections to

Loudspeakers

2

L

S/PS-140

Parasound Products, Inc. San Francisco, CA USA

+

+

Loudspeaker Selector

3

R

L

+

+

4

R

L

+

Speaker Wire Polarity

When you connect the various speaker wires to your S/PS-140, you will notice that one side of the two
conductor speaker wire will have some sort of mark: either printing, a raised ridge on the insulation, or a
different color of conductor. The marked insulation or copper colored wire usually indicates the positive
conductor. This demarkation lets you know which wire is connected to the positive and which to the
negative speaker terminals so you can do exactly the same to the power amplifier's red (+) and black (-)
binding posts.

Connecting Speaker Wires Using 1/4" Spade Lugs

For ease of installation, we recommend that you use the gold-plated 1/4" spade lugs provided with your
S/PS-140 for terminating all of your speaker connections. These crimp-on connectors will accept wire
up to AWG 10. Also included are red and black insulation "boots" to insulate the speaker wire and to
indicate proper polarity (see below).

Crimping Spade Lugs Onto the Speaker Wires

1. Strip about 1/4" of insulation from the speaker wire

2. Slip the insulation boot over the speaker wire

3. Twist all its strands tightly and insert the wire into the spade lug

4. Use a crimping tool to crimp the spade lug onto the speaker wire

5. Slip the insulation boot over the spade lug

6. Once you have inserted the wire into the terminal, tighten the screw with a phillips or flat blade
screwdriver.

Connecting Speaker Wires Using Bare Wire

If you wish, you may connect bare wire up to AWG 12 to the terminal strip on the S/PS-140. Make sure
you remove only enough insulation so the wire can fit under the square washer of the terminal strip.
Before inserting the wire, twist all its strands tightly to prevent strays that could cause a short circuit.
(You may want to "tin" the stripped wire with solder to prevent it from fraying and oxidizing.) Once you
have inserted the wire into the terminal, tighten the screw with a phillips or flat blade screwdriver.

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