Installation Guide

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IS SPEAKERS - AMPLIFICATION GUIDELINES

Internal Tech Note for Models: IS6, IS8, IS10, IS10W, IS15W

Ampliﬁer Selection

Sonance’s new Motion Flex IS speakers were designed for peak performance

when used in conjunction with Sonance DSP ampliﬁers. A substantial library of

DSP presets tailored to these new IS speakers are now available. This makes it

easy to unlock optimal sound regardless of IS model, ﬁnish type, ﬁnish thickness,

or room properties when driven by a Sonance DSP amp.

Built-in IS Speaker Protection

In order to protect the speakers and the installation surface, all IS speakers have

integrated, self-resetting poly fuses for each transducer. If a speaker is

overdriven, one or both of the poly fuses will trip, and the transducers will cease

to make sound. This protects both the driver and the installation surface from

damage in overdrive conditions. After a few minutes, the fuses will reset on their

own, and the speakers will perform as normal.

This built-in protection system is more than adequate to safeguard the vast

majority of applications and user behaviors.

3rd Party Ampliﬁers & Extended Protection

IS woofers (models IS10W and IS15W) must be powered by a Sonance DSP

ampliﬁer using the appropriate DSP preset.

For IS full-range speakers (models IS6, IS8, and IS10), a Sonance DSP amp is the

best choice for most applications; however, there may be times when a 3rd party

amp is used. Because 3rd party amps vary substantially in output, DSP capability,

load stability, etc., extra protection is required as an additional safety measure to

prevent overdriving IS full-range speakers.

This extended protection device is a High Pass Filter (HPF) that protects the

speaker from over-excursion (too much movement of the speaker panel in and

out) by reducing sub-sonic frequencies delivered to the speakers. The HPF has

no audible eect while adding an extra layer of safety when driving IS from a 3rd

party amp.

IS6 has the HPF built-in. No special action is needed to use this speaker with a

3rd party amp.

IS8 and IS10 require the HPF to be installed at the ampliﬁer terminals when

driven by a 3rd party amp. These are available now from Sonance.

SKU 93507 - IS8 HPF (Pair)

SKU 93508 - IS10 HPF (Pair)

Sonance has made a running production change to all IS8 & IS10 speakers. We

anticipate this change beginning to ship in Q2 2021 which will eliminate the need

for an external High Pass Filter. See pg. 4 for IS8/IS10 version identiﬁcation info.

Summary of content (5 pages)

PAGE 1
IS SPEAKERS - AMPLIFICATION GUIDELINES Internal Tech Note for Models: IS6, IS8, IS10, IS10W, IS15W Amplifier Selection Sonance’s new Motion Flex IS speakers were designed for peak performance when used in conjunction with Sonance DSP amplifiers. A substantial library of DSP presets tailored to these new IS speakers are now available. This makes it easy to unlock optimal sound regardless of IS model, finish type, finish thickness, or room properties when driven by a Sonance DSP amp.
PAGE 2
IS AMPLIFICATION GUIDE Please follow these guidelines when pairing IS Speakers with various types of amplification. Sonance DSP amps: Always select the appropriate DSP preset for the model of IS speaker in use and according to the finish type and room type. 3rd Party amps: Do not use a 3rd party amp to drive IS10W and IS15W woofers. Always use a Sonance DSP amp. For IS6, no special action is needed. For IS8, install a single HPF (SKU 93507) at the amplifier terminals for each output channel in use.
PAGE 3
FAQ Why is the HPF built-into the IS6 and not the IS8 and IS10? The IS6 diaphragm actually had the most inward and outward movement as we measured these speakers during development (more than even the IS15W). This is because for a speaker to produce more bass, it needs either increased size or increased movement in and out. This is also why the IS15W does not actually move in and out as much as you would think—the diaphragm (at 32” x 32”) has enormous surface area.
PAGE 4
FAQ CONT. How do I know if an IS8 or IS10 has the HPF built-in? Check the serial number on the carton or on the speaker near the input cable. Look at the date code starting at digit #7 (which immediately follows the SKU number). 09347920 41L0001 • • Serial numbers with a date code starting 20 do not have the HPF built-in. Serial numbers with a date code starting 21 or higher have the HPF built-in. For example, the speaker above does not have a HPF built-in because the date code starts with 20.
PAGE 5
IS8 / IS10 HIGH PASS FILTER INSTALLATION Install the IS8 / IS10 HPF at the amplifier terminals for easier serviceability. Use one HPF per speaker. Connect the HPF in series with the positive speaker lead. See diagram below. IMPORTANT: Use the appropriate HPF SKU for the model of IS speaker in use.