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IP7-SS20 to 25/70V Audio Distribution Line with one or more Speakers

25/70v operation requires an audio transformer connected to each IP7–SS20

and speakers that accept 25v/70v inputs wired in parallel

• Connect SPKR 8Ω+ and SPKR 8Ω- (J2-6 and J2-7) to the 8 ohm side of a

25/70 audio transformer

• Connect the appropriate 25/70v winding leads to the speaker distribution

line. Choose the winding tap with a value equal to or slightly higher than 20

watts

Transformer

20 Watt

Speaker Line

Tap

25/70V Audio

Transformer

25/70V Distribution Line Installation Guidelines

• Each speaker must have its own 25/70V transformer

• All Speakers must be wired in parallel

• Make sure to maintain the same wiring polarity between each speaker

• Do not mix speakers tapped for 25V with a 70V distribution line or

speakers tapped for 70V with a 25V distribution line

• Each speaker's relative volume can be set by selecting the appropriate

wattage taps from the transformer

• When the wattage from each speaker is added together, the total cannot

exceed the available wattage for the IP7. IP7 amplifier wattage is reduced

by 30% loss due to transformer loss

• Snip off any exposed wire ends on the transformer to prevent shorting

IP7-SS20 to 8 Ohm Paging Speaker

• Connect SPKR 8Ω+ and SPKR 8Ω- (J2-6 and J2-7) to the terminals of an

8 Ohm speaker (polarity independent)

• To connect multiple 8 Ohm speakers to a single IP7, refer to the IP7-SS20

Reference Manual

25/70V

8 Ohm

Tap

24V AC/DC

Cat-5/6 to

Network Switch

Power Options

• 24v AC/DC at 50 watts connected to J1-1 and J1-2 connectors or Aux

Power 2.1mm barrel. Wiring connections are polarity independent

Network Installation

• Connect an RJ-45 cable between the Ethernet 10/100 connector and a

network switch. A cable may also be connected directly to a PC during

configuration and setup.

Mounting Instructions

The IP7 series is design to be mounted on standard 35mm DIN rail or

surface mounted using the optional surface mounting plate.

• DIN Rail Clip – Tilt top of unit (J1, J2 connectors facing up with Volume

buttons facing forward) back towards the DIN Rail until the IP7-SS20 DIN

clip catches the top of the rail. Press in at the bottom of the IP7-SS20 to

snap into place.

• Surface Mount Plate – Snap the optional surface mount plate in half and

secure it to the back of the frame using the provided screws so that the

mounting holes extend past the edges of the case

Page 2 of 4

Speaker

External 24 AC/DC

18 Awg – Max 200'/60M

Cat-5/6 Cable to

Network Switch