MUSIC-ONLY Speaker System, Models IS-75

MUSIC-ONLY SPEAKER SYSTEM

A separate radio/music source may be connected to a non- intercom IMA-516 speaker system to provide a music-only system.

LOW-LEVEL RADIO/MUSIC OUTPUT

(1)NuTone Radio-Intercom. Low-level music output provided - black and blue wires; connect with IW-2 (max. 10 ft.) to black and blue input wires on IMA-516 Amplifier.

(2)Existing stereo receiver with tape output jacks. Make connection from black and blue low-level input wires on IMA-516 Amplifier - to - tape output jacks (use “y” adaptor to make connection to both channel A and B jacks). Use IW-2 (max. 10 ft.).

(3)Speaker connected to an existing AM/FM radio music source. use IW-2 (max. 10 ft.) to connect the IMA-516 low-level input leads to the speaker terminals.

MODEL 301T

TRANSFORMER

IMA-516

120vAC, 60Hz HOUSE

POWER

OBSERVE18 / 2 (NUTONE S-143)

LOCAL CODE

MODELS IS-75,

IS-76, ISA-77

ISA-78, IS-79

SPECIFICATIONS FOR LOW-

LEVEL OUTPUT CONNECTION

(1)Minimum 5mv for 50mw output (least useable output).

(2)50 mv for 4 watts (full output).

(3)Maximum input voltage: 1 volt.

(4)Input impedence: 100k ohms.

Procedure for this connection:

(1)Turn Radio Volume Control on IMA-516 Amplifier to minimum (extreme counterclockwise position).

(2)Make wire connections.

(3)Supply power and adjust the radio-music volume at the source.

(4)Finally, increase IMA-516 Radio Volume Control to desired level.

NUTONE IW-2

LOW-LEVEL

INPUT WIRES

BLUE & BLACK

DECREASE	DECREASE
DECREASE
INCREASE	INCREASE
INTERCOM VOLUME	RADIO VOLUME
CONTROL	CONTROL
INPUT	DOOR
ORN /WHT	BLK
	DOOR
INPUT	BLK /WHT
ORN
CHIME	AC
CHIME	AC
	AC
OUTPUT	OUTPUT
HI	LO	FIELD
RED	RED WHT	GROUNDING
		GROUNDING
		WIRE

IC-501 (OBSOLETE)

VOLUME CONTROLNUTONE IW-2 (MAX. 500 FT. TO 2 SPKR.) (MAX 250 FT TO 4 SPKR.) (MAX 125 FT. TO 8 SPKR.)