KS188 Overview

Hi everyone, Chris here from QSC.

In this video we are going to give you a basic overview of the KS118 Active Subwoofer.

The KS118 is the largest offering in the KS Series of active subwoofers.

This sub features a single tour-grade, long excursion, direct radiating 18-inch driver,

housed in a rugged Birch plywood enclosure.

The built-in Class D amplifier module provides 3600 watts of peak power

to drive the woofer to optimal performance at a peak SPL of 136 dB.

With on-board, powerful DSP,

the KS118 is perfect for users looking for a commanding and powerful low-frequency reinforcement solution.

Let’s go ahead and take a look at the back panel and walk through the features of the KS118.

Like our other KS Series subwoofer models, the KS118 includes two input connections for line-level sources.

Using both inputs allows a stereo connection

from separate left and right top boxes to be made to a single subwoofer.

Alternatively, you could connect the Main left and right outputs from your mixer to the KS118 first,

and run the signal out to the Left and Right top boxes using the parallel Thru outputs.

It makes no difference to the performance, which one you connect first.

One option may be more suited to your setup based on the physical location of your mixer.

If a mono connection is made, such as from a mixer Aux output, only one input is needed.

In a setup using multiple subwoofers,

the parallel outputs can also be used to daisy chain them together.

The KS118 also offers a number of DSP features,

which can be accessed, configured and recalled using the onboard LED screen and navigation controls.

To access the DSP menu,

use the rotary control to navigate through the menu and press the "Enter" button to select.

First, a selectable 80 or 100 Hz crossover

is available for you to match the crossover frequency of the top loudspeakers you are using in your PA system.

Next, up to 100 ms of onboard delay can be adjusted and viewed in seconds, meters or feet.

The DEEP™ mode extends the KS118’s low-frequency response down to 33 Hz,

optimizing it for electronic or pop music.

While the Cardioid preset allows for the configuration of a cardioid subwoofer array

when two or three KS118 subwoofers are used.

For more information about that feature, check out our Cardioid Subwoofer Video video.

You can find a link to that in the description below.

The last option in the menu is the setting section.

Within ‘Settings’ you have options to recall and save up to 5 custom scenes

for your most commonly-used applications.

You can also adjust the state of the Front LED,

change the contrast of the back panel navigation screen

and finally, you can reset all subwoofer’s parameters to the default factory settings.

The subwoofer enclosure includes four heavy-duty, low-noise casters

for easy transportation

as well as a threaded, M20 gauge pole receiver

for deploying a top loudspeaker in a vertical orientation.

16, 26, and 36 inch pole accessories are available separately,

to customize your sub and top box deployment.

The enclosure also includes eight slip-resistant feet and alignment cups

for stacking the subwoofers in either a vertical or horizontal orientation.

For protection during transport, a transport cover with reinforced grille protection is available

to keep your subwoofer looking great after being moved to and from the venue.

The KS118 is a commanding and powerful addition to any portable or installed PA system,

giving your sound the clear, dynamic low-end power you’re looking for.

For more information about the KS118, be sure to head over to qsc.com.

Thank you for watching.

We’ll see you next time.