Legrand Impedance Matching Volume Control, IS-0293 Installation guide
- Category
- Car speakers
- Type
- Installation guide
Legrand Impedance Matching Volume Control, IS-0293, can be used to connect multiple pairs of speakers to an amplifier than the amplifier could accommodate on its own. It is commonly used in multi-room audio systems, where different rooms require different levels of volume control. Some key features and possible use cases are as follows:
- Impedance matching: The device allows you to match the impedance of your speakers to the amplifier, ensuring that the amplifier can safely drive the speakers without damaging them. This is especially important if you are using multiple pairs of speakers with different impedances.
Legrand Impedance Matching Volume Control, IS-0293, can be used to connect multiple pairs of speakers to an amplifier than the amplifier could accommodate on its own. It is commonly used in multi-room audio systems, where different rooms require different levels of volume control. Some key features and possible use cases are as follows:
- Impedance matching: The device allows you to match the impedance of your speakers to the amplifier, ensuring that the amplifier can safely drive the speakers without damaging them. This is especially important if you are using multiple pairs of speakers with different impedances.
INSTRUCTION/INSTALLATION SHEET
SPEAKER LEVEL / IMPEDANCE MATCHING VOLUME CONTROL IS-0293 REV.O
1. Introduction
On-
Q
Home Speaker Level /
Impedance Matching Volume Control
P/N 364769-01 White
P/N 364769-02 Almond
P/N 364769-03 Ivory
The On-Q Home Speaker Level / Impedance Matching Volume Controls,
P/N 364769-xx (see Figure 1), are meant to be used in a multiple speaker
distributed sound system. These volume controls enable more pairs of speakers
to be connected to an amplifier than the amplifier could normally accommodate
(due to impedance matching ability). The impedance matching volume controls
mate perfectly with parallel audio distribution devices such as the On-Q Home 6
Room Audio Module, P/N 364454-01, and the HECC 7.1, 6 Room Audio,
P/N 364676-xx. This volume control also has a non-impedance matching (speaker
level), (1x) option to accommodate a single pair of speakers. When used in this fashion
better fidelity will be achieved with the single pair of speakers.
2. Description
The On-Q Home Speaker Level / Impedance Matching Volume Controls occupy a
single gang of an electrical box and are offered in white, almond, and ivory in an attractive
decorator style. They have wiring blocks that disconnect for easy wiring and offer
impedance matching selection via jumpers labeled 2x, 4x, and 8x, (1x=non-impedance
matching), located on the circuit board. It is recommended that they be installed in a mud
ring such as the On-Q Home Single Gang New Construction Mud Ring, P/N 364524-01,
Figure 1
or an electrical box that is 20 cubic inches or greater. On-Q Home also offers dual gang and
retro fit mud rings, P/N 364524-xx, 364525-xx.
Figure 2
3. Installation
Installation of the On-Q Home Speaker Level / Impedance Matching Volume Control,is best
accomplished at multiple times during new construction, at “Rough-in” before the drywall is
installed, and at “Trim-out” after the drywall is installed and painted.
A. “Rough-in” steps:
Note: It is recommended that a minimum of 16 gauge 4 conductor wire be run for most applications from the
distribution, such as the On-Q Home 6 Room Audio Module, to the volume control. Different gauge wire can, and
should, be used based upon the distance of the intended run or quality of installation (see Figure 2) . It is recommended
that wire gauge not be less than 18 gauge. The impedance matching volume controls can accommodate up to 14 gauge
wire.
1. Run x/4 conductor (x=gauge preference) stranded speaker wire from the
distribution area to the volume control. Run a minimum of 18 gauge 2 conductor
wire from the volume control to the speakers, see Figure 2 for help in
determining what gauge speaker wire should be used for your installation.
B. “Trim-out” steps:
Figure 3
Page 1 of 3
301 Fulling Mill Road, Suite G ©Copyright 2004 by OnQ Technologies, Inc All Rights Reserved.
Middletown, PA 17057 www.onqhome.com
(800)-321-2343
Innovations in Home Living.
INSTRUCTION/INSTALLATION SHEET
SPEAKER LEVEL / IMPEDANCE MATCHING VOLUME CONTROL IS-0293 REV.O
1. Strip 3/16ths of an inch from all conductors (feed from distribution and runs to
speakers) and insert into the wiring block (see Figure 3) of the volume control.
Tighten screws onto wire and give them a tug to insure there properly fastened.
NOTE: BE SURE NOT TO REVERSE THE AMPLIFIER OR SPEAKER CONNECTIONS OR DAMAGE
TO THE AMPLIFIER COULD RESULT!
2. Install the volume control into the mud ring/electrical box.
3. Determine how many pairs of speakers will be powered to the
same amplifier (parallel), (See Figure 4).
4. Determine the ohm capability of the amplifier (i.e. 8, 4 or 2).
This will be listed in the specification of the amplifier. It yields
how "low" of a load the amplifier can safely run before damage or
over heating occurs.
NOTE: Impedance varies with frequency, so in actuality, no load
is seen as a stable (8, 4 or 2 ohms), it varies as frequency varies.
(This is why some of the higher selections were made in the Multiplier
Figure 4
chart.), see Figure 5.
5. After load capacity is
determined, refer to
Figure 5 to determine the
proper multiplier setting for
all the volume controls.
NOTE:
This chart refers to 8 ohm
speakers. If the Speakers
being used are some other
impedance, you must
calculate the parallel
impedance and multiply it
by the appropriate
multiplier (x2, x4 or
x8), see Figure 6, to match
the load to the amplifiers
capabilities. Non-
impedance matching=x1.
Figure 6
Page 2 of 3
301 Fulling Mill Road, Suite G ©Copyright 2004 by OnQ Technologies, Inc All Rights Reserved.
Middletown, PA 17057 www.onqhome.com
(800)-321-2343
Innovations in Home Living.
INSTRUCTION/INSTALLATION SHEET
SPEAKER LEVEL / IMPEDANCE MATCHING VOLUME CONTROL IS-0293 REV.O
Figure 5
Use this formula to determine impedance: Two 8 ohm speakers in parallel equal 4 ohms.
NOTE: The
x-1
is a key on a scientific calculator which stands for reciprocal.
8 ohms
x-1
+ 8 ohms
x-1
= .25 Then .25
x-1
= 4 ohms 4 ohms x 2 (multiplier setting
2
) = 8 ohms
8 ohms
x-1
+ 8 ohms
x-1
+ 8 ohms
x-1
+ 8 ohms
x-1
= .50
Then .50
x-1
= 2 ohms 2 ohms x 4 (multiplier setting
3
) = 8 ohms
Blue Line Series Speakers OnQ Part Number
6.5" In-Ceiling Speaker (pair) 364654-02
8" In-Ceiling Speaker (pair) 364655-02
6.5" In-Wall Speaker (pair) 364656-02
8" In Wall Speaker (pair) 364657-02
6.5" Dual Voice Coil In-Ceiling Speaker (ea.) 364658-01
Outdoor Speakers, white/black (pair) 364659-02/04
Home Theater (Blue Line) Series Speakers OnQ Part Number
6.5" In-Ceiling Speaker (ea.) 364660-01
8" In-Ceiling Speaker (ea.) 364661-01
6.5" In-Wall Speaker (ea.) 364662-01
8" In Wall Speaker (ea.) 364663-01
10" 150W Subwoofer (ea.) 364664-01
Gold Line Series Speakers OnQ Part Number
6.5" In-Ceiling Speaker (ea.) 364665-01
8" In-Ceiling Speaker (ea.) 364666-01
6.5" In-Wall Speaker (ea.) 364667-01
8" In Wall Speaker (ea.) 364668-01
6.5" Dual Voice Coil In-Ceiling Speaker (ea.) 364669-01
Outdoor Speakers, white/black (ea.) 364670-02/04
12" 200W Subwoofer (ea.) 364671-01
Pre-Construction Brackets OnQ Part Number
6.5" In-Ceiling Pre-Construction Bracket Kit 364672-02
8" In-Ceiling Pre-Construction Bracket Kit 364673-02
6.5" In-Wall Pre-Construction Bracket Kit 364674-02
6.5" In-Wall Pre-Construction Bracket Kit 364675-02
Replacement Grills OnQ Part Number
6.5" In-Ceiling Speaker 364690-01
8" In-Ceiling Speaker 364691-01
6.5" In-Wall Speaker 364692-01
8" In Wall Speaker 364693-01
6. Position the jumper plug on the two pins relating to the
appropriate multiplier setting (1x, 2x, 4x, or 8x).
(See Figure 7).
NOTE: Rotating the volume control fully counter clockwise will
yield no power going to the speakers (off).
On-Q Home offers a variety of In-Ceiling, In-Wall, and Outdoor
speakers and Sub-Woofers.
Figure 7
Page 3 of 3
301 Fulling Mill Road, Suite G ©Copyright 2004 by OnQ Technologies, Inc All Rights Reserved.
Middletown, PA 17057 www.onqhome.com
(800)-321-2343
Innovations in Home Living.
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Legrand Impedance Matching Volume Control, IS-0293 Installation guide
- Category
- Car speakers
- Type
- Installation guide
Legrand Impedance Matching Volume Control, IS-0293, can be used to connect multiple pairs of speakers to an amplifier than the amplifier could accommodate on its own. It is commonly used in multi-room audio systems, where different rooms require different levels of volume control. Some key features and possible use cases are as follows:
- Impedance matching: The device allows you to match the impedance of your speakers to the amplifier, ensuring that the amplifier can safely drive the speakers without damaging them. This is especially important if you are using multiple pairs of speakers with different impedances.
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