Induction dynamics Sw1 User manual

SUBWOOFER SERIES

OWNER’S MANUAL

Rev 07.01.2019

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SUBWOOFER SERIES

Please read the following instructions carefully before installing your Induction Dynamics®subwoofer series. If you have any

questions regarding installation that are not answered in the following directions, please contact your local sound contractor or

the Induction Dynamics®/MSE Audio®technical support team. Contact information can be found on the back of the manual.

General Information

Your speakers and amplier come in a high quality nish that is both attractive and durable. To clean, use a soft, damp cloth. If

your drivers become dusty, dust them with a paintbrush or a brush vacuum attachment. Do not use a strong or abrasive cleaner.

The grille is covered in acoustic cloth. To keep your grille clear of debris, we recommend you use a lint roller (like you would use

on clothes).

Do not use bass or loudness contour controls. Induction Dynamics’ subwoofers produce very low frequencies without these

controls. Use of these controls will make the bass sound “boomy”, obscure higher frequencies, and possibly cause damage

due to excessive cone excursion.

Amplifer location: The A2 amplier is best located in an equipment rack or shelving with other audio and video equipment. It is

not recommended for placement behind walls or other limited access locations, where service may be restricted.

The A3 amplier is built in to the SW1, SW2, SW3 and SW4. If you chose the A3 option, make sure to place your subwoofer in

an open area with plenty of ventilation. Do NOT build in to walls or place the subwoofer in a closed area.

Speaker Wiring: Use approved wire designed for in-wall or exposed use, as appropriate for your installation. For freestanding

speakers, we recommend using high-quality speaker wire that is 12 gauge or lower, with easily visible polarity coding to make

your connections. The following chart identies minimum gauge requirements for various lengths. See your local dealer or

installation contractor for more information.

Length in Feet

Up to 18’

Up to 29’

Up to 51’

AWG Size & Stranding

14 Gauge (19/27)

12 Gauge (65/30)

10 Gauge (105/30)

Wire Length / Minimum Gauge

Requirements

New Construction Installation (For In-Wall and On-Wall Models)

In new home construction, or with walls where drywall has not been applied, it is recommended that you wait until after the

drywall application before installing the easymount boxes for the following reasons:

1. The installer gains the control to cut a neat and accurate hole, eliminating possible mistakes by drywallers.

2. Drywall around the hole is more likely to be at. This is especially true if any mudding is done in the vicinity of the hole. The

result is a cleaner nal t around the edges.

3. Possible shimming behind drywall can throw off depth calculations and nal alignment of gasket with the face of the drywall.

Drywallers sometimes shim to level out the wall where studs are out of line.

4. Mud and construction dust is kept from getting into the box.

If circumstances require the easy-mount boxes to be installed prior to drywall, then be sure the gasket on the front of the boxes

protrudes out from the edge of the wall studs by an amount equal to the thickness of the drywall plus 1/4”. Alternatively, the

outside back of the metal box should be 3 7/8” back from the nished drywall surface.

Check for Obstacles Inside Walls

Check the home’s architectural blueprints to verify that your preferred mounting location is free from obstacles including extra

wall studs, electrical wires, plumbing, and heating ducts.

Locating the Subwoofer Mounting Holes

1. To nd wall studs, use a stud nder. The in-wall and on-wall subwoofers will mount between two studs and should be

positioned so that the tweeter is at ear level.

Wall studs

Center line

pencil mark

3” hole - centered

between wall studs

Cutout - centered

between wall studs

12 9/16” W x 60” H

2. When you’ve decided on a location, cut a 3” hole in the approximate center of the

proposed cutout area. Measure the exact distances from the left and right wall studs

from the inside of the wall, to establish the horizontal center line between the wall

studs and mark this with a pencil.

3. Place the mounting hole template ush against the wall. The template should be

centered between the wall studs, making sure that the left and right channels are the

same height.

4. Using a drywall knife or keyhole saw, carefully cut along the drawn line and remove

the cutout.

5. Before installing the easy-mount box into the walls, you will need to bring the

speaker wire into the mounting hole. Be sure to leave plenty of extra wire coming

into the mounting hole, especially if you are bringing in the wire from below since the

speaker wire access holes are at the top of the easy mount box.

Installing the Easy-Mount Box Into the Wall

This section is specic to in-wall and on-wall models.

1. The in-wall and on-wall subwoofers are shipped preassembled with the faceplate attached to the easy-mount box with

bolts. In order to install the in-wall easy-mount box into the wall, you will rst need to separate the faceplate from the box. First,

remove the grille mounting anges, using the grille mounting ange driver. Note that there may be shims under some of the

grille mounting anges. You will need to save these shims to use when you reinstall the faceplate. Then unscrew the faceplate

mounting bolts using a 1/4” hex key or driver. You will later reattach the faceplate with these same faceplate mounting bolts.

2. There are two speaker wire access holes located at the top of the easy-mount box. The box comes with a solid grommet

preinstalled in the large hole and a small size grommet preinstalled in the smaller hole. The grommet hole size you will need

depends on the size of the wire you are putting through the hole. In the parts pouch you will nd a selection of large and small

grommets that have holes through them of various sizes. Use a grommet of the appropriate size to get a snug t around the

speaker wire where it enters the box. Put a solid grommet in the other hole. Make sure there is enough extra speaker wire

feeding into the box for easy handling of the loudspeaker faceplate.

3. Place the easy-mount box into the mounting hole.

4. Snug the Stud Grabber™ bolts against the left and right wall studs just enough to cause the easy-mount box to be suspended

in the cutout opening. Do not overtighten these bolts to avoid distorting the studs or box. Make all necessary adjustments to

level and position the easy-mount box in the wall. The preferred method is a small level held against the inner side of the easy-

mount box to make sure it is perfectly vertical. Upon completion, the box should be level and centered in the cutout opening

with the box gasket protruding 1/4” out from the drywall surface.

5. Tighten the Stud Grabber lock nuts with a wrench.

6. Place the 4” stud screws into the hole in the inside of the Stud Grabber bolts. Carefully pound them in about 1/4” with a

hammer to get the threads started. Tighten each of the screws with a #2 square head screwdriver until the screws are snug.

Installing the Faceplate

This section is specic to in-wall and on-wall models.

While installing the faceplate, we recommend that an assistant help hold the faceplate. Be careful working with the assembly

that you don’t damage any of the speaker components.

1. Hold the speaker faceplate up to the wall opening and attach the speaker wire to the terminal block on the back of the

faceplate, observing the proper polarity. To make the connections to the terminal block, solder or crimp with high pressure the

insulated fork terminals provided in your parts packet. Soldering is best. For in-wall, use make sure the compensator switch is

in the proper position.

2. Position the speaker faceplate over the easy-mount box. Gently move it around from side to side and up and down until

the rubber gasket slides around the faceplate mounting inserts. Screw in the faceplate mounting bolts, gently tightening each

one a little at a time, until the faceplate is approximately 1/32” from the drywall all around. DO NOT TIGHTEN THE BOLTS ANY

FURTHER. The faceplate should not contact the drywall. This avoids any vibration or distortion of the drywall.

Installing the Faceplate (cont.)

3. Install the grille mounting anges that came in the parts packet using the grille mounting ange driver. Any shims that were

removed should be replaced back under the grille mounting anges to make them level with the faceplate. The grille mounting

anges should be used even if the grilles are not, as this gives the subwoofers a nished appearance.

4. Attach the cloth grille by carefully pressing it into the grille mounting anges.

Connecting to an Amplifier

1. Be sure the amplier is turned off to avoid damage to the speakers.

2. Connect the speaker wires to the speaker outputs on your amplier. Observe proper polartity (red to red and black to black).

3. Make sure each speaker is connected to the correct amplier output (e.g. left front loudspeaker to left front output).

Installing the Subwoofer With A2 Amplifier

The A2 is designed to be used with audio/video pre-ampliers and receivers that have their own built-in low frequency crossover

circuits. These circuits typically have a low pass rolloff of 12dB/octave or 24 dB/octave. The best crossover frequency setting

is usually 60 Hz (12 dB/octave low pass) or 70 Hz (24 db/octave low pass). Ultimately, the crossover frequency setting is best

determined by consulting your own ears.

Connecting the A2 to your Amplifier / Reciever

1. Turn off the power to each piece of equipment before making any connections.

2. Using high-quality interconnect cables with RCA type terminations, connect the “SUBWOOFER OUT” on the audio/video

preamplier or receiver to “IN” on the A2. If using a single subwoofer, proceed to step 3; if using two subwoofers, skip step 3

and proceed to step 4.

3. Using high-quality speaker wire (consult the chart on page 4), connect the black binding post on the A2 to the black binding

post on the SW4.iw subwoofer and connect the red binding post on the A2 to the red binding post on the SW4.iw subwoofer.

Proceed to step 5.

4. If using a single A2 with two subwoofers, the subs must be connected in series. In this conguration, the two 4-ohm loads

will combine to create an 8-ohm load. Connect the red binding post of the A2 amplier to the red binding post on the rst

subwoofer, and the black binding post on the A2 amplier to the black binding post on the second subwoofer. Then connect

the black binding post on rst subwoofer to the red binding post on the second subwoofer. Three subwoofer connection

methods are shown on the next page. Proceed to step 5.

5. Connect the amplier to a 120-volt, single phase, 60-Hz, grounded power supply using the power cord provided. For best

results, use a dedicated power circuit for your amplication equipment. See next page for continued steps.

Connecting the Subwoofer with the A3 Amplifier

The A3 amplier has a built-in adjustable low-pass crossover with a bypass switch on the back panel. This allows the subwoofer

to be used with audio/video pre-ampliers and receivers that have their own built-in low-frequency crossover circuits.

Connecting the A3 to your Amplifier / Reciever

The SW1, SW2, SW3 and SW4 has several connection options. Read through steps 1 - 4 and choose the applicable method

for your setup, then proceed to step 5.

1. Standard Subwoofer Connection - preamp or receiver with sub output

Using high-quality interconnect cables with RCA type terminations, connect the SUBWOOFER OUT on the audio/video

preamplier or receiver to either the L or R LOW LEVEL inputs on the back of the A3 amplier. In this conguration you will use

the built-in crossover circuits in the audio/video preamplier or receiver so the low-pass switch on the A3 amp should be in the

“out” position. This bypasses the crossover. Proceed to step 5.

2. Connecting Multiple Subwoofers - preamp or receiver with sub output

Using high-quality interconnect cables with RCA type terminations, connect the SUBWOOFER OUT on the audio/video

preamplier or receiver through a Y-connector to either the L or R LOW LEVEL inputs on the backs of both A3 ampliers. In this

conguration you will use the built-in crossover circuits in the audio/video preamplier or receiver so the low-pass switch on the

A3 amp should be in the “out” position. This bypasses the crossover. Proceed to step 5.

3. Special Low-Level Stereo Connection - preamp or receiver without sub output

Using high-quality interconnect cables with RCA type terminations, connect the RIGHT and LEFT PREAMP OUT on the audio/

video preamplier or receiver through two Y-connectors to the corresponding L IN or R IN on the A3. Then, connect the free

leg of the Y-connectors to the L and R inputs on the audio/video receiver or amplier used to power the higher frequency range

speakers. In this conguration you will use the low-pass crossover in the A3 amplier, so the low-pass switch on the A3 amp

should be in the “in” position. Proceed to step 5.

4. Special High-Level Stereo Connection - preamp or receiver without sub output

The high-level method is recommended for setups where the receiver is a long distance from the main left and right speakers

and subwoofer. Connect the L and R speaker leads from the main amp directly to the high-level terminals marked FROM

AMPLIFIER on the A3 amp. Then connect a second pair of speaker leads to your L and R main speakers. The high-level

terminals are capable of connecting leads terminated with either bare wire ends or “banana” plugs. If your leads have “banana”

plugs on them, the plastic decorative plugs may be removed from the high-level terminals on the A3 amplier. When using the

high-level terminals, be sure to verify the positive leads are connected to the red terminals and the negative leads are connected

to the black terminals on all connections. In this conguration you will use the low-pass crossover in the A3 amplier, so the

low-pass switch on the A3 amp should be in the “in” position. Proceed to step 5.

The remaining steps can be found on the next page.

Connecting the A2 to your Amplifier / Reciever (cont.)

6. Phase Check: Listen to the subwoofer(s) and higher frequency speakers together. Then, reverse the speaker wires on the

back of the subwoofer (black to red and red to black). This reverse connection is 180° out of phase with the normal connection.

One of these two arrangements will sound noticeably louder in the low-frequency range. The louder arrangement is the proper

phase alignment for your installation.

7. Volume Adjustment: The subwoofer volume level may be adjusted by using the control in the menu of the audio/video

preamplier or receiver. The subwoofer volume level may be measured using a sound level meter, a real time analyzer, or

adjusted by ear. An easy technique is to set the level just below where it starts to sound “boomy”.

Warranty

All Induction Dynamics®products come with a limited ten (10) year warranty and a limited three (3) year warranty comes on all

electronics. Products not purchased through MSE Audio or an authorized reseller may not be supported by a factory warranty.

Should your Induction Dynamics product require service, please call the MSE Audio customer service department for a return

authorization. All merchandise returned to MSE Audio without prior authorization will be refused. For your return authorization

number, please call 855.663.5600 or email [email protected].

This warranty may be registered online at www.mseaudio.com/product-registration/ or by calling the number on the back.

Please write the serial number along with the name and address of the retailer from whom you purchased the amplier(s). This

may be done at the time of purchase or before requesting repair service under this warranty.

Limits and Exclusions: There are no warranties except as mentioned above. Neither Induction Dynamics®, Inc. nor anyone else

who has been involved in the creation, production, or sale of this product shall be liable for any direct, indirect, consequential

or acidental damages arising out of the use or inability to use this product, or arising out of breach of this warranty. Induction

Dynamics®, Inc. makes no other warranties, express or implied, including without limitation warranties of merchantability or

tness for a particular purpose. There are no warranties that extend beyond the description on the face hereof.

Connecting the A3 to your Amplifier / Reciever (cont.)

5. Connect the amplier to a 120-volt, single phase, 60-Hz, grounded power supply using the power cord provided. For best

results, use a dedicated power circuit for your amplication equipment.

6. If you used connection method 3 or 4, you will need to adjust the low pass. Initially, set the low pass at the lowest frequency

specied by the manufacturer for the main speakers. For example, if the frequency response of your mains is specied as 55-

20,000 Hz, set the low pass at 55 Hz. Later, after setting volume level and checking phase, you can ne tune the low pass

setting.

7. Due to varying processor designs and possible phase switches, it is best to check the phase of your subwoofer for proper

alignment. Your subwoofer with built-in A3 amplier has a phase switch on the back panel. To test for proper phase, play some

music that has some low- frequency sound. Listen to the subwoofer and higher frequency speakers together. With an assistant

manning the phase switch, listen to the frequencies slightly above the lowest frequencies (at crossover), asking the assistant to

switch between the two positions. One of these two positions will sound noticeably louder in the crossover frequency range.

The louder position is the proper phase alignment for your installation.

8. You can adjust the subwoofer level using the gain control on the back of the A3 amplier. The gain control is precisely

stepped in 1/2 dB increments, allowing settings for various applications to be easily repeated. For exibility, a 3-position switch

is provided which allows the selection of additional gains of +10, 0, -10 dB; these gain controls are in addition to the control in

the menu of the audio/video preamplier or receiver.

Induction Dynamics®by MSE Audio®| 10661 Rene St. | Lenexa, KS 66215

913-663-5600 or 855-663-5600 | www.inductiondynamics.com

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