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Russound ALT-126R Installation Manual

INSTALLATION 

Type of Speaker Cable

For most applications, 16 gauge, stranded copper speaker cable is recommended for the ALT-

126R speaker connections. For wiring runs longer than 100 feet, 14 gauge wire is recommended. 
Always use cable with a "CL" fi re rating.

NOTE - Never use solid-core, aluminum or Romex® type cable with volume controls.

P-Ring and Electrical Boxes

From the wallplate/faceplate to the back of the ALT-126R, the mounting depth of the volume 

control is 2-7/8”. It requires a minimum of a standard light switch plaster ring (p-ring) or standard 
22 cu. in. (or larger) electrical box.

CAUTION: Do not install the ALT-126R into electrical boxes with 110V devices. Do not locate 

speaker wires too close to a light switch or dimmer switch as this may cause a humming or 
buzzing sound to be heard through the speakers. If it is necessary to locate the volume control 
near electrical devices, install it in a separate metal electrical box, ground the box to the electrical 
system ground, and route the speaker wires several feet away from the electrical wiring.

EZB Connecting Blocks

The EZB-8 connecting block a Russound accessories that simplifi es the connection of multiple 

volume controls and speaker pairs. The EZB-8 is a neat, compact wiring device for connecting up to 
eight volume controls to an amplifi er's outputs. 

Wiring Instructions

CAUTION: Many receivers operate at a rating of 8 ohms. On receivers that off er A and B speaker 

outputs, both A and B connections share the same amplifi er. It is recommended to wire all speakers 
to the A output (using an EZB-8) when using impedance matching UltraMatch™ volume controls. 
Do not mix speakers connected via volume controls with speakers connected directly to the amp/
receiver.

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Summary of Contents for ALT-126R UltraMatch

Page 1: ...ALT 126R Volume Control Installation Manual ALT 126R_Manual indd 1 7 1 14 12 23 PM ...

Page 2: ...ce should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance 9 Grounding or Polarization Precaution should be taken so that the grounding or polarization means of an appliance is not defeated 10 Object and Liquid Entry Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through the openin...

Page 3: ...ing Make sure the amplifier has 20 watts per channel for each pair of speakers to be connected How many ALT 126R An UltraMatch volume control should be used for each pair of speakers however up to 2 pairs of speakers can be used on each control Speaker rating A minimum 4 ohm speaker load can be connected to the Output of each UltraMatch volume control Impedance matching switch Each ALT 126R in the...

Page 4: ... s minimum impedance If the amplifier is 6 ohm stable use the 8 ohm chart Appropriate row and column Cross reference the total number of 4 ohm pairs of speakers rows on charts below with the total number of 8 ohm pairs of speakers columns on charts below to choose the right switch position 1X 2X 4X or 8X see illustration on page 5 0 1 2 3 4 5 6 7 8 0 1X 2X 4X 4X 8X 8X 8X 8X 1 2X 4X 4X 8X 8X 8X 8X ...

Page 5: ...PEDANCE MATCHING Note before accessing impedance switch remove knob and front plate Front plate is attached to the frame with 4 tabs use caution to push the tabs out of the frame Front cover Knob Tab Frame ALT 126R_Manual indd 5 7 1 14 12 23 PM ...

Page 6: ...ming or buzzing sound to be heard through the speakers If it is necessary to locate the volume control near electrical devices install it in a separate metal electrical box ground the box to the electrical system ground and route the speaker wires several feet away from the electrical wiring EZB Connecting Blocks The EZB 8 connecting block a Russound accessories that simplifies the connection of m...

Page 7: ...d the excess wire out the back of the junction box will help you with the final assembly Operation 1 Turn the amplifier receiver OFF and set its volume to minimum 2 Set all the ALT 126R volume controls to maximum fully clockwise 3 Turn on the amp receiver and select a music source e g tuner or CD player 4 Slowly turn up the amplifier receiver volume to the maximum desired listening level and leave...

Page 8: ...8 Russound ALT 126R Installation Manual INSTALLATION EXAMPLE ALT 126R_Manual indd 8 7 1 14 12 23 PM ...

Page 9: ...pedance matching type Autoformer based Quick connect terminals 4 pole screw down accepts up to 12 gauge cable Attenuation 12 steps including Off total attenuation 48 dB Frequency response 20Hz 20kHz 1 0 0 5 dB at rated power Mounting Standard 22 cu in single gang junction box Dimensions 1 625 W x 2 675 H x 2 5 D 41 x 73 x 63 mm Weight 1 lb 453g ALT 126R_Manual indd 9 7 1 14 12 23 PM ...

Page 10: ...orized Dealers and Distributors to ensure that customers obtain proper support and service Any Russound product purchased from an unauthorized dealer or other source including retailers mail order sellers and online sellers will not be honored or serviced under existing Russound warranty policy Any sale of products by an unauthorized source or other manner not authorized by Russound shall void the...

Page 11: ...11 Russound ALT 126R Installation Manual ALT 126R_Manual indd 11 7 1 14 12 23 PM ...

Page 12: ...1389 07 01 14 2014 Russound All rights reserved All trademarks are the property of their respective owners Specifications are subject to change without notice Russound is not responsible for typographical errors or omissions ALT 126R Volume Control Installation Manual ALT 126R_Manual indd 12 7 1 14 12 23 PM ...

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