I N S T A L L A T I O N G U I D E
F O R AUTO M AT E D SWITC H ING BE T WEEN A U D IO/VI D E O SYS T E MS
V O LTA G E A C T I VA T E D S P E A K E R L E V E L S W I T C H I N G S Y S T E M
SPK-1
CONGRATULATIONS!
Thank you for choosing the SPK-1 Speaker Level Switching System from Niles. With proper
installation and operation, you should enjoy years of trouble-free use.
Niles manufactures the industry’s most complete line of custom installation components and
accessories for audio/video systems. To see the complete Niles product assortment, visit us on
the Internet at: www.nilesaudio.com.
TABLE OF CONTENTS
Introduction 1
Features 2
Installation 3
Specifications 6
Warranty 8
Warranty Registration Card 9
INTRODUCTION
The SPK-1 is a two channel, speaker level A-B switch. The SPK-1 can be used to switch amplifiers,
speakers, surround sound systems, or any application where a voltage-activated speaker-level switch
is preferred.
Applying 12 volts DC to the control input connector activates the switch. A control output connector
is also provided. The control output is internally connected in parallel with the SPK-1’s control input.
The control output can be used to control additional SPK-1’s by “daisy-chaining” the control output of
one unit to the control input of the next. Connecting two SPK-1’s together enables you to switch four
channels of speaker-level signals and connecting three units together lets you switch six channels,
and so on. A maximum of 6 SPK-1’s may be connected together in this manner.
The control output can also be used to connect other Niles switching devices such as the AC-3
Voltage Activated AC outlet and the AVS-2 Voltage Activated Line-Level Switch.
The SPK-1 is designed primarily to be used as an expansion unit for the Niles SAS-1 Signal Activated
A-B Switch. The SAS-1 is an automatic A-B switch designed to replace manually operated A-B
switches. It automatically switches from A to B when a signal is present at input B. The SAS-1 can
switch any combination of line-level audio, speaker-level audio and composite video signals. Using its
control out connector, the SAS-1 can be used as the “master” unit which activates other “slave” units
such as the SPK-1, AVS-2 and AC-3. Please refer to www.nilesaudio.com for more information on
these and other Niles switching systems available.
NILES AUDIO CORPORATION – 1-800-BUY-HIFI
1
FEATURES
• Replaces manually operated A-B switches
• Audio power handling: 600W per channel
• SPK-1 is activated by 12Volt DC signal (100mA minimum)
• Requires 12Volt DC adapter to trigger SPK-1 from the switched outlet of a receiver or
preamp, can also be triggered by the 12Volt output of a Niles APC-2, AC-3, AVS-2,
SAS-1 or RFS-1
• 12Volt control output for activating other Niles devices such as an APC-2, AC-3, AVS-2,
SAS-1 or RFS-1
• Note: This unit is not a Signal-Sensing Switcher; if signal-sensing is required use the
SAS-1 or ABS-1
• Premium nickel-plated five-way binding post connectors
• Two-year limited warranty
2
INSTALLATION
CONNECTIONS
Refer to figures 1 through 3 on the following pages.
Strip approximately 1/4" –
wire tightly together and insert them into the appropriate holes in the binding posts. Secure by
turning the binding posts until they are hand-tight. BE SURE TO OBSERVE PROPER PHASING
connect the positive terminals of the amplifier(s) and speakers to the positive terminals of the
SPK-1 and connect the negative terminals of the amplifier(s) and speakers to the negative
terminals of the SPK-1.
Connect the 12 volt DC source which will activate the SPK-1 to the “CONTROL IN” connector. An
optional DC adapter is available from Niles Audio. BE SURE TO OBSERVE PROPER POLARITY WHEN
MAKING THIS CONNECTION
Any other switching devices to be activated at the same time may be “daisy chained” together by
using the “
CONTROL OUT” connector.
NO MORE – of insulation from each wire. Twist the free ends of each
–
.
NILES AUDIO CORPORATION – 1-800-BUY-HIFI
3
SPEAKERS
SPEAKER “A” OUT
SPEAKER “A” OUT
RECEIVER “B”RECEIVER “A”
12 VOLT DC
ADAPTER TO
SWITCHE
D
AC OUTLET
(USER SUPPLIED)
COMMON
CONTROLINCONTROL
OUT
A
L R L R L R
B
INSTALLATION CONTINUED
COMMON
CONTROL
IN
CONTROL
OUT
A
L R L R L R
B
COMMON
CONTROLINCONTROL
OU
T
A
L R L R L R
B
FRONT SPEAKERS
REAR SPEAKERS
REAR SPEAKERS
CLOSE SWITCH TO
ENGAGE SPEAKERS
IN THIS ROOM
FRONT SPEAKERS
SPST SWITCH
(USER SUPPLIED)
ROOM 2ROOM 1
SURROUND RECEIVER
SPK-1 FRONT SPK-1 REAR
12 VOLT DC
ADAPTER
(USER SUPPLIED)
FRONT
OUT
REAR
OUT
Figure 1. Using an SPK-1 to switch a pair of speakers between 2 different receivers.
Figure 2. Manually switching 4 channels of speakers between 2 rooms using two SPK-1’s.
4
INSTALLATION CONTINUED
COMMON
CONTROLINCONTROL
OU
T
A
L R L R L R
B
REAR SPEAKERS FRONT SPEAKERS
REAR SPEAKERS
TO AUX IN OF RECEIVER
AUDIO COMMON OUT
AUDIO OUT
TURN ON TV TO ENGAGE
SPEAKERS IN THIS ROOM
FRONT SPEAKERS
ROOM 2
ROOM 1
SURROUND
RECEIVER
SAS-1 (MASTER) SPK-1 (SLAVE)
AC WALL
TRANSFORMER
(SUPPLIED WITH
SAS-1)
FRONT
OUT
REAR
OUT
COMMON
CONTROL
OUTS
A
B
COMMON
A
B
L R L R L R
TRIGGER
LEVEL
POWER
DELAY
V A
S
CONTROL
IN
Figure 3. Automatically switching 4 channels of speakers between two rooms using an SAS-1 and
an SPK-1.
NILES AUDIO CORPORATION – 1-800-BUY-HIFI
5
SPECIFICATIONS
Speaker Level Power Handling:
600 Watts/channel continous (RMS)
Connnectors:
Five-way speaker wire binding posts
Power Requirements:
12 volts DC at .1 Amp (100 milliamps)
Overall Dimensions:
6-13/16" wide x 3-1/8" high x 5-5/16" deep
Weight:
1-1/2 lbs.
6
NOTES
NILES AUDIO CORPORATION – 1-800-BUY-HIFI 7
LIMITED WARRANTY
NILES AUDIO CORPORATION (“NILES”) WARRANTS ITS ACTIVE PRODUCTS (THOSE REQUIRING AC OR BATTERY
POWER) TO THE ORIGINAL PURCHASER TO BE FREE OF MANUFACTURING DEFECTS IN MATERIAL AND
WORKMANSHIP FOR A PERIOD OF TWO YEARS FROM DATE OF PURCHASE.
THIS WARRANTY IS SUBJECT TO THE FOLLOWING ADDITIONAL CONDITIONS AND LIMITATIONS. THE WARRANTY
IS VOID AND INAPPLICABLE IF NILES DEEMS THAT THE PRODUCT HAS BEEN USED OR HANDLED OTHER THAN IN
ACCORDANCE WITH THE INSTRUCTIONS PROVIDED BY THE MANUFACTURER, INCLUDING BUT NOT LIMITED TO
DAMAGE CAUSED BY ACCIDENT, MISHANDLING, IMPROPER INSTALLATION, ABUSE, NEGLIGENCE, OR NORMAL
WEAR AND TEAR, OR ANY DEFECT CAUSED BY REPAIR TO THE PRODUCT BY ANYONE OTHER THAN NILES OR AN
AUTHORIZED NILES DEALER.
TO OBTAIN WARRANTY SERVICE, TAKE THE UNIT TO THE NEAREST AUTHORIZED NILES DEALER, WHO WILL TEST
THE PRODUCT AND IF NECESSARY, FORWARD IT TO NILES FOR SERVICE. IF THERE ARE NO AUTHORIZED NILES
DEALERS IN YOUR AREA, YOU MUST WRITE TO NILES AND INCLUDE YOUR NAME, MODEL AND SERIAL NUMBER
OF YOUR UNIT, ALONG WITH A BRIEF DESCRIPTION OF THE PROBLEM. A FACTORY RETURN AUTHORIZATION
NUMBER WILL BE SENT TO YOU. DO NOT RETURN ANY UNIT WITHOUT FIRST RECEIVING WRITTEN AUTHORIZATION
AND SHIPPING INSTRUCTIONS FROM NILES.
IF THE ABOVE CONDITIONS ARE MET, THE PURCHASER’S SOLE REMEDY SHALL BE TO RETURN THE PRODUCT TO
NILES, IN WHICH CASE NILES WILL REPAIR OR REPLACE, AT ITS SOLE OPTION, THE DEFECTIVE PRODUCT WITHOUT
CHARGE FOR PARTS OR LABOR. NILES WILL RETURN A UNIT REPAIRED OR REPLACED UNDER WARRANTY BY
SHIPPING SAME BY ITS USUAL SHIPPING METHOD FROM THE FACTORY (ONLY) AT ITS EXPENSE WITHIN THE
UNITED STATES OF AMERICA. THERE ARE NO OTHER WARRANTIES, INCLUDING WITHOUT LIMITATION, EITHER
EXPRESS OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, WITH
RESPECT TO THE PRODUCT.
REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE REMEDY OF THE CONSUMER/
PURCHASER. NILES SHALL NOT BE RESPONSIBLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES EXCEPT
TO THE EXTENT PROVIDED (OR PROHIBITED) BY APPLICABLE LAW.
SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES,
SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND
YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE.
FOR THE NAME OF YOUR NEAREST AUTHORIZED NILES DEALER CONTACT:
NILES AUDIO CORPORATION, P.O. BOX 160818, MIAMI, FLORIDA 33116-0818.
Please fill in your product information and retain for your records.
Model______________________ Serial No.___________________ Purchase Date________
8
WARRANTY REGISTRATION CARD
Model Purchased _________________________________________________________
Serial Number ___________________________________________________________
Date Purchased (month/day/year) _____________________________________________
Dealer Name and Location __________________________________________________
______________________________________________________________________
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Dr.
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Miss
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Mr.
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Mrs.
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Ms.
Name__________________________________________________________________
Address________________________________________________________________
______________________________________________________________________
City_______________________________________State________________Zip ______
Telephone ( ) _________________________________________________
Please take a moment to fill out our warranty registration card. The information helps us to get to
know you better and develop the products you want
Age:
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Under 25
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25-34
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55 & over
Income:
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Under $24,999
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$25,000-$44,999
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$45,000-$74,999
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Over $130,000
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DETACH HERE AND RETURN TO: NILES AUDIO CORPORATION WARRANTY REGISTRATION DEPT. P.O. BOX 160818 MIAMI, FLORIDA 33116-0818
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Tradesperson
Musical tastes:
(Please check all
that apply)
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