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The SVL-4AB includes impedance correction circuitry which
protects each of your receivers or amplifiers from low imped-
ance loads. The circuitry assures that both of your receivers or
amplifiers will recognize a safe operating load, even when one
amplifier is playing all four speaker pairs at the same time.

The actual impedance load the SVL-4AB presents to each of
your receivers or amplifiers will vary, depending on how
many speaker pairs are playing, and the impedance rating of
each speaker. If you have four pairs of 8-ohm speakers play-
ing from one of your receivers/amplifiers, the SVL-4AB will
present a 4.5 ohm impedance load to it. With four pairs of 4-
ohm speakers playing, the load drops to slightly under 4
ohms.

It is recommended that you use the SVL-4AB with receivers
or amplifiers that are capable of driving a 4-ohm load.
Consult your Niles dealer, or the receiver/amplifier manufac-
turer, if you are uncertain about the capabilities of the
receiver/amplifier.

Type of Speaker Wire

For most applications, we recommend you use 16 or 18
gauge stranded copper speaker wire for the SVL-4AB connec-
tions. For wiring runs longer than 80 feet, 14 gauge wire is
recommended. Using speaker wire larger than 14 gauge for
the SVL-4AB connections is not recommended — the wire

5

S

P E A K E R

S

E L E C T I O N

/ V

O L U M E

C

O N T R O L

S

Y S T E M

"TECH TIP"

Wire size is

expressed by it's

AWG (American 

Wire Gauge) 

number. The lower

the AWG number,

the larger the

wire,

i.e., 12 AWG wire is

physically larger

Summary of Contents for SVL-4AB

Page 1: ...SVL 4AB I N S T A L L A T I O N O P E R A T I O N G U I D E M O D E L SVL 4AB SPEAKER SELECTION VOLUME CONTROL SYSTEM WITH A B AMPLIFIER INPUTS SVL 4AB...

Page 2: ...combi nation of speakers and amplifiers A perfect application for the SVL 4AB is individually control ling speaker ON OFF and volume adjustment for four pairs of speakers connected to two receivers D...

Page 3: ...f adjustment there are 10 steps of atten uation instead of 8 Steps 11 6 attenuate 3 dB per step steps 5 2 are 6 dB per step Step 12 is full on and step 1 is full off Greater dynamic range you get 42 d...

Page 4: ...iring can be attached directly to the connectors before installing them in the SVL 4AB 100 tested electronically and acoustically for frequency response distortion and power handling Standard 17 width...

Page 5: ...ce Load As more pairs of speakers are parallel connected to a receiver or amplifier the overall system impedance becomes lower For example if two pairs of 8 ohm speakers are connected in parallel the...

Page 6: ...pairs of 4 ohm speakers playing the load drops to slightly under 4 ohms It is recommended that you use the SVL 4AB with receivers or amplifiers that are capable of driving a 4 ohm load Consult your N...

Page 7: ...speaker wires too close to a light dimmer or switch may cause a buzzing or popping sound to be heard though the speakers If you must locate the SVL 4AB wiring near electrical devices route the speake...

Page 8: ...S Y S T E M Figure 1 Using a Tube Amplifier Tube Amplifier Niles SVL 4AB 150 150 AMPLIFIER L L R R L L R R L L R R L L R R L L R R SPEAKER 4 SPEAKER 3 SPEAKER 2 SPEAKER 1 CONSTANT PROTECTION ON OFF Ni...

Page 9: ...Miami Florida USA NILES 12 position volume control provides greater attenuation than conven tional 10 position designs Recessed areas for custom room labels Attractive low profile design Each speaker...

Page 10: ...9 S P E A K E R S E L E C T I O N V O L U M E C O N T R O L S Y S T E M TUNER 94 9 15 AMPLIFIER L L R R L L R R L L R R L L R R L L R R SPEAKER 4 SPEAKER 3 SPEAKER 2 SPEAKER 1 CONSTANT PROTECTION ON...

Page 11: ...the amplifiers and speakers and the negative terminals on the SVL 4AB to the negative terminals on the amplifiers and speakers If you are using only one amplifier it should be connected to the Amplifi...

Page 12: ...the SVL 4AB which corre sponds to the speaker pair you wish to play Set it to the ON position 4 Adjacent to the ON OFF button is the amplifier A B but ton Choose an amplifier for the active speaker p...

Page 13: ...imultaneously 1 Make sure both of the amplifiers are OFF and set the vol ume controls to minimum 2 On the right side of the SVL 4AB s front panel is a button labeled PROTECTION This button activates t...

Page 14: ...ume capability and should quickly reduce the volume to avoid damaging your speakers 8 Using the appropriate volume controls on the front of the SVL 4AB adjust the volume of the speakers to the desired...

Page 15: ...to maintain constant impedance protection regardless of the position of the front panel switch This will safeguard either or both of your ampli fiers from being overdriven due to accidental or imprope...

Page 16: ...x 305 238 0185 1999 Niles Audio Corporation All rights reserved Because Niles believes in constantly improving its products Niles reserves the right to change product specifications without notice Nil...

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