Russound ALTX Bedienungsanleitung

ALTx Volume Control

Instruction Manual

ALTx manual 3/15/00 11:04 AM Page 1

INTRODUCTION

The ALTx UltraMatch™ Volume Control you have just purchased is a wall-

mounted Decora™ or Standard style, stereo speaker-level volume control.

It connects between the speaker outputs of an amplifier or receiver and a

pair of speakers.The 1X setting allows the volume control to be used as a

standard control. The 2X, 4X, and 8X settings allow it to be used as an

UltraMatch™ control. The UltraMatch™ volume control provides a

method of matching the minimum output impedance of the amplifier or

receiver, in addition to adjusting volume. It eliminates the need for a

speaker selector or impedance matching equipment. The ALTx adjusts vol-

ume level by attenuating the amplifier signal output of the ALTx to the

speakers. All Russound Volume Controls are manufactured using a high-

quality autoformer design which provides long life, excellent frequency

response, no heat build-up, and maximum power transfer from the ampli-

fier to the speakers. All Russound ALTx volume controls conform to UL

Standard 1492 First Edition, and for Canada Certified to CSA Standard

22.2 No. 1-M94. This certification assures that your ALTx volume control

has been designed and tested for safety.

INSTALLATION CONSIDERATIONS

• Near other wall controls

• Near a desk/workstation

• In entryways or exits

P-RING AND ELECTRICAL BOXES

From the wallplate/faceplate to the back of the ALTx control, the mount-

ing depth of the ALTx is 2 7/8”. You must use a minimum of a standard

light switch plaster ring (p-ring) or a standard 20 cu. in. (or larger) electri-

cal box. Suitable P-Rings and electrical boxes are available from your

Russound dealer or a local electrical supply company. Using the P-Ring

during new construction (some building codes require that wall devices

be enclosed in electrical boxes. Check your local building code) is best

because it gives you unobstructed access to the full depth of the wall.

TYPE OF SPEAKER WIRE

For most applications, we recommend you use 16 or 18 gauge, stranded copper speaker

wire for the ALTx speaker connections. For wiring runs longer than 100 feet, 14 gauge

wire is recommended. Using speaker wire larger than 14 gauge for ALTx Volume Controls

is not recommended as the wire may not fit into the connectors. NOTE - Never use solid-

• At your bedside

• Close to a telephone and an intercom

• Near a jacuzzi

1X-2X

2X-4X-8X

1X-2X

2X-4X-8X

1X-2X

2X-4X-8X

1X-2X

2X-4X-8X

1X-2X

2X-4X-8X

1X-2X

2X-4X-8X

1X-2X

2X-4X-8X

1X-2X

2X-4X-8X

Jumper

Settings On

Circuit Boards

ALTx manual 3/15/00 11:04 AM Page 2

core, aluminum or Romex® type wire with volume controls. When running speaker wires

inside walls, most states and municipalities in the U.S. specify that you must use a special

type of speaker wire. Usually, the requirement is that the wire has a specific “CL” fire

rating, such as “CL-2” or “CL-3”. Consult your Russound dealer, building contractor, or

local building and inspection department if unsure about which type of wire is best for

your application. If you need speaker wire, we recommend you order Russound AW

series wire. These speaker cables use multi-strand copper wire and high-temperature PVC

jackets specially designed for snaking through the walls and for long speaker runs.

CAUTION

Do not install the ALTx into electrical boxes with 110 Volt devices. Some states or munici-

palities allow devices such as the ALTx to be installed into the same electrical box as 110

volt devices, provided a “low-voltage partition” is used between the devices. Russound

does not recommend this. Speaker wires can act as an “antenna” for electrical noise.

Locating speaker wires too close to a light switch or dimmer switch may cause a “hum-

ming” or “buzzing” sound to be heard through the speakers. If you must locate the vol-

ume 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.

OPERATION

1. Make sure the amplifier or receiver is OFF and set the volume to minimum.

2. Set the ALTx volume to maximum (fully clockwise).

3. Turn on the amplifier or receiver and select a music source, such as tuner or CD player.

4. Slowly turn up the amplifier or receiver volume and set it to a comfortable (not maxi-

mum) listening level. Be careful not to overdrive your amplifier. If the sound becomes

muddy or distorted, you have reached the limit of your amplifier’s volume capability

and should quickly reduce the volume to avoid damaging your speakers.

NOTE: 12 o’clock (50%) on most receivers is full volume. An amplifier that is being

driven beyond its potential will produce D/C voltage (clipping) which will not pass

through a transformer, resulting in improper signal transfer and possible amplifier shut-

down or damage.

5. Adjust the volume of the speakers to the desired listening level using the ALTx.

6. You can turn off the speakers in each room by turning the knob on the ALTx completely

counter-clockwise.

IMPORTANT: If you are unsure of any of the installation procedures, the products

should be installed by a professional custom installer.

ALTx manual 3/15/00 11:04 AM Page 3

DETERMINING THE PROPER JUMPER SETTING FOR

IMPEDANCE MATCHING

The jumper must be set in a position that correctly multiplies the impedance of the system

to a level that is equal to or greater than the impedance of the amplifier. The jumper set-

ting can be determined using the following simple steps

1. Determine the amplifier's minimum impedance. The amplifier's minimum impedance

is usually found following Wattage and Frequency Response in the amplifier's specifica-

tion page of the manual. It may also be listed on the back panel of the amplifier near

the speaker terminals. AC impedance is measured in ohms.

2. Identify the correct impedance-matching chart according to the amplifier's minimum

impedance. There are two impedance matching charts, one for 8 ohm amplifiers and

one for 4 ohm amplifiers. Choose the chart that describes your amplifier. If your ampli-

fier is 6 ohm stable, use the 8 ohm chart.

3. Determine the impedance for each pair of speakers by referring to its manual.

4. Determine the total number of 4 ohm pairs of speakers. (rows on charts)

1X-2X

2X-4X-8X

1X-2X

2X-4X-8X

Fig 1

ULTRAMATCH™ VOLUME CONTROLS

Russound UltraMatch™ volume controls eliminate the

need for a speaker selector. By determining the drive capa-

bility of the amplifier with a few simple calculations, we

can determine the number of speakers the system can

safely operate.

ALTx manual 3/15/00 11:04 AM Page 4

CONSIDERATIONS

1. Make sure that your amplifier has adequate wattage for the number of speakers. Watts

per channel divided by the number of pairs should equal or exceed the individual

speaker’s minimum wattage requirements.

2. You must use an UltraMatch™ volume control for each pair of speakers.

3. Every jumper setting must be set on the same setting throughout the system.

4. A minimum speaker load of 4 ohms can be connected to the output of each

UltraMatch™ volume control.

EZB CONNECTING BLOCKS

The EZB-1 and EZB-2 connecting blocks are Russound accessories that simplify connections

of multiple volume controls and speaker pairs. The EZB-1 is a neat, compact wiring device

capable of connecting four volume controls to an amplifier's outputs. The EZB-2 expands the

EZB-1 to another 4 volume controls. Multiple EZB-2's can be used to expand the system to

sixteen volume controls.

012345678910111213141516

0 - 1X 1X 2X 2X 4X 4X 4X 4X 8X 8X 8X 8X 8X 8X 8X 8X

1 1X2X2X4X4X4X4X8X8X8X8X8X8X8X8X

2 2X4X4X4X4X8X8X8X8X8X8X8X8X

3 4X4X4X8X8X8X8X8X8X8X8X

4 4X8X8X8X8X8X8X8X8X

5 8X8X8X8X8X8X8X

6 8X8X8X8X8X

7 8X8X8X

8 8X

012345678

0 - 1X 2X 4X 4X 8X 8X 8X 8X

1 2X4X4X8X 8X 8X 8X

2 4X8X8X8X8X

3 8X8X8X

48X

Impedance Matching For 4 Ohm Amplifiers

Impedance Matching For 8 Ohm Amplifiers

8 Ohm Pairs

4 Ohm Pairs

8 Ohm Pairs

Fig 2 Impedance Matching Charts For UltraMatch™

Example: The table to the right shows

an 8 ohm minimum impedance

amplifier with 1 pair of 4 ohm speak-

ers and 3 pair of 8 ohm speakers. The

chart indicates the jumper setting

should be set at 8X

5. Determine the total number of 8 ohm pairs of speakers. (columns on charts)

6. Follow the appropriate row and column to determine jumper settings. (ex. see fig 2)

ALTx manual 3/15/00 11:04 AM Page 5

WIRING INSTRUCTIONS

1. Connect the leads from the amplifier’s outputs to

the connector labeled input. The wires should stay

consistent, left + of the amplifier to left + input of

the volume control, observing polarity and

identification.

CAUTION: Do not reverse the input and output

connections!!

CAUTION: A majority of receivers are designed to

operate at a rating of 8Ω. On receivers that offer A

and B speaker outputs, both A and B connections

share the same amplifier. It is important to note, due

to the way many receivers are wired, that when

using impedance matching devices, such as

UltraMatch™ volume controls, it is recommended

to wire all speakers to the A output. If you have any

questions contact Russound directly.

2. As outlined in step #1, connect the speaker wires to

the connector labeled output.

3. Install the completed assembly in the junction box.

Insert carefully to avoid excessive strain on the

connector. Taking the time to feed the excess

wire out the back of the junction box will help

you with the final assembly.

R+ INPUT

R- L- L+

R+ R- L- L+

OUTPUT

SPEAKERS SPEAKERS

SPEAKERS

INPUT

SPEAKERS

TO OTHER

VOLUME CONTROLS

TO OTHER

VOLUME

CONTROLS

AMP / Receiver

Input

EZB-1

(OPTIONAL)

Output

Speaker

Pair

Fig 3

ALTx manual 3/15/00 11:04 AM Page 6

WARRANTY

All Russound volume controls are fully guaranteed against all defects in materials and

workmanship as long as the original purchaser and user of the volume control owns the

unit. During the warranty period, Russound, at its option, will replace or repair any defec-

tive part and correct any defect in workmanship without charge for parts or labor. For this

warranty to apply, the unit must be installed and used in accordance to its written instruc-

tions. If necessary, repairs must be performed by Russound. The unit must be returned to

Russound at the owner's expense and with prior written permission of Russound.

Accidental damage and shipping damage are not considered defects, nor is damage

resulting from abuse, or from servicing performed by an agent or person not specifically

authorized in writing by Russound. Damage to or destruction of components due to appli-

cation of excessive power voids the warranty on those parts. Repairs to components dam-

aged or destroyed due to application of excessive power will be made by charging the

owner the retail value of the parts and labor for the repair. To return items for repairs, the

unit must be shipped to Russound at the owner's expense, along with a written explana-

tion of the nature of the service required. The unit must be packed in a corrugated con-

tainer with at least 3 inches of resilient material to protect the unit from damage in transit.

Russound reserves the right to request proof of purchase. Except to the extent prohibited

by applicable law, no other warranties, whether expressed or implied, other than the

express warranties stated herein, shall apply to units sold to the purchaser. Russound shall

not be liable for any implied warranty of merchantability or fitness for a particular purpose

to any person other than the original purchaser and user. Under no circumstances shall

Russound be liable for property damage, economic loss or any consequential damages

sustained in connection with the purchase and use of its products. Some states do not

allow limitations on how long an implied warranty lasts, or do not allow the exclusion or

limitation of incidental or consequential damages, so the above limitations or exclusions

may not apply to you. Russound neither assumes nor authorizes any representative or

other person to assume for it any obligation or liability other than such as is expressly set

forth herein. This warranty gives you specific legal rights, and you may also have other

rights which vary from state to state.

ALTx manual 3/15/00 11:04 AM Page 7

5 Forbes Rd. Newmarket, NH 03857

☎ 603.659.5170 •Fax 603.659.5388

e-mail: tec[email protected]

Come visit us at:

ALTx manual 3/15/00 11:04 AM Page 8

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