BK Precision XLS200 MKII Owner's Manual

XLS200 MKII

Subwoofer System

OWNERS MANUAL

CONTENTS

Page No.

1) Safety instructions.

2)

3)

4)

Connecting up your XLS200.
Connecting up using the high level input.
Connecting up using the low level input.

5) Setting up your XLS200.

6) Controls and their functions.

7) Specifications.

SAFETY INSTRUCTIONS

Caution:

To avoid the risk of electric shock do not remove the panel from the
cabinet. If this unit fails or has a serious deterioration in performance
then refer repair to the dealer where you purchased the unit.

1)Please read these instructions carefully and keep them for future reference.

2) Please heed all warnings.

3) Please follow these instructions.

4) Do not use this apparatus near water or allow to get wet.

5) Keep well ventilated.

6) Do not install near heat sources such as radiators, stoves etc.

7) Protect the power cord from damage.

8) Disconnect from the power supply during lightning storms or extended periods of
inactivity.

9) Refer all servicing to qualified service personnel. If the unit develops a fault of any
sort please refer repair back to your dealer.

10) Do not force the controls or switches further than their normal stops.

11) Clean with a dry soft cloth. If you do use polish, then apply polish to cloth not
directly to the unit.

(1)

CONNECTING UP YOUR XLS200

Always switch off your system before disconnecting or connecting any wires.

To make connecting up of the XLS200 as versatile as possible we have included two
separate inputs. One Neutrik Speakon socket and one pairs of gold plated RCA sockets.
This is to facilitate use with both Hi-Fi and AV surround systems.

The high level input, is an unbalanced dual channel (stereo) input that uses a professional
touch proof Neutrik Speakon connector. Signals for this input would normally be sourced
from the left and right speaker terminals of the main system amplifier. The advantage of
this method is that the XLS200 receives exactly the same signal as being supplied to the
main speakers. This means that the character and tonal balance of the bass from the main
speakers is carried through to the sub bass.

The low level input is via one set of the gold plated RCA to RCA connectors marked as “IN”
on the front panel. Signals for the low level input are unbalanced and would normally be
sourced from the LFE output of an AC3 decoder. Alternatively the low level input can be
connected to a dedicated sub out of a processor (for single outputs connect to the input
marked “Mono”), or to stereo pre-amp output where available.

The XLS200 comes fitted with four black M8 nylon screws that act as feet and help prevent
the base of the subwoofer from getting scratched. If you wish to take advantage of the
isolating spikes that come supplied with the XLS200 then please follow the following fitting
instructions:-

First thread one nut per spike on each spike. Now remove the M6 nylon screws from the
bottom of the subwoofer and fit the four spikes. The cabinet can now be leveled by
screwing in or out each spike accordingly. When levelled tighten up each lock nut against
the base of the cabinet.

Caution: Take special care with the spikes as they are very sharp. DO NOT use on
delicate floor finishes

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CONNECTING UP USING THE HIGH LEVEL INPUT

Figure 1. Shows a diagram on how to connect the high level input. Using the optional
Neutik lead, connect the XLS200 to the output of your amplifier via your existing speaker
plug or to a spare set of speaker terminals if available. In effect you are Bi-Wiring your
XLS200 to your power amp. Please note that the Neutrik cable has only three leads and is
arranged this way to preserve the star earthing of your amplifier (assuming it has a star
earth arrangement).

To connect the high level lead you will need to connect the RED wire to the RED terminal of
the RIGHT hand speaker terminal of your power amp. Connect the YELLOW wire to the
Red terminal of the LEFT hand channel speaker terminal of your power amp. The BLACK
wire is connected to either one of the BLACK speaker terminals of your power amplifier.
This is important as some power amplifiers do not like their black terminals joined. Now
plug the neutrik connector into the high level input of the XLS200. The Neutrik plug will fit
only one way as it has a key. Next push the plug in then turn clockwise until you feel it latch.
To undo the Neutrik plug, pull back the silver lever on the Neutrik plug and turn counter­clockwise.

Please Note: It may not be possible or advisable to connect the high level input directly to
an amplifier that has a class d digital output. Please check with the supplier of your
amplifier that this form of connection is possible.

If you do have a class d amplifier and are unable to use the high level input, then BK have
developed a sonicaly transparent isolator that overcomes this problem. Please contact us
for further details.

Method 1 - To Connect to a Power Amplifier Using the High Level Input

RIGHTLEFT

BlackRed BlackRed

INPUT

Min

HIGH LEVEL

Max

GAIN

Yellow RedBlack

Neutrik Speakon Interconnect

Figure 1.

(3)

CONNECTING UP USING THE LOW LEVEL INPUT

Figure 2. Shows a diagram on how to connect the low level input. Using the supplied RCA
to RCA interconnect, plug one end into the XLS200 low level input and the other end into
the dedicated sub output on your amplifier or processor. If a sub out is not available then
you can use a spare set of pre-amp outputs.

If you only have a single sub woofer output socket on your equipment, then connect up
using one of the pairs of leads (red to red). In this instance use the (Mono) input on your
XLS200 sub.

Please Note that high and low level connections can be used at the same time if required.
This has the advantage of being able to connect up a Hi-Fi and AV system simultaneously.

Method 2 - To Connect to the Amplifier Using the low level input

PROCESSOR

LFE / Sub Out

INTEGRATED AMP / PRE-OUT

LEFT

RIGHT

Figure 2.

(Mono)

R

L

(Mono)

R

L

Min

INPUT

Min

INPUT

GAIN

LOW LEVEL

GAIN

LOW LEVEL

Max

Max

In

In

FILTER

FILTER

Out
LFE

Out
LFE

(4)

SETTING UP YOUR XLS200

! Connect your XLS200 as shown in Figure 1 or Figure 2. Then attach your

subwoofer to the power supply using the power cable supplied, at this point have the
power switch in the off position.

! Now turn both the high level and low level gains to the minimum position, and the

frequency control to 120Hz. Turn the phase control to position 1.

! When using a source on the low level input that has built in bass management ( AV

Processors) then you can switch the Filter Bypass Switch to the Out position. Your
processor will manage the bass frequencies on the low level and the XLS200 will
manage the bass frequencies on the High Level Input

! Now switch the power on, and play a track which you are familiar with that has bass

content (If you are using both inputs then start by setting the high level input first
using an audio CD then repeat the setting up procedure on the low level input using a
film track).

! Adjust the gain control until the level of the bass from your subwoofer matches the

level from your main system speakers. Now slowly adjust the frequency control
counter clockwise until the output from the subwoofer meets the lowest notes from
your main speakers (the crossover point), you may need to adjust the gain control
again to match your main system speakers.

! The XLS200 has a fully adjustable phase control to allow partial cancellation of the

frequencies around the crossover point between the two systems. Listen to the
quality of the bass with the phase in the 0 deg position and then slowly adjust towards
the 180 deg position . Choose the position that subjectively offers the tightest
cleanest bass.

Following these setup instructions will get you up and running, but over a few days with
practice and a lot of listening you will be able to fine tune the system for seamless
integration.

As a rule it is not usually necessary to have the subwoofer at high volume levels, but to
have it gently supporting the main speakers.

(5)

CONTROLS AND THEIR FUNCTIONS

1 2

Min

INPUT

GAIN

Max

In

5

FILTER

Out
LFE

40Hz 120Hz

6

Min

FREQUENCY

Max

7

O

0

PHASE

180

O

3

(Mono)

R

L

INPUT

Min

4

Max

GAIN

LOW LEVELHIGH LEVEL

8

9

230V
50-60Hz
T2AL

ON

OFF

XLS200 MKII

Designed and manufactured by :­www.bkelec.com
[phone]

TO AVOID RISK OF ELECTRIC SHOCK DO NOT REMOVE
PANEL NO USER SERVICEABLE PARTS INSIDE. REFER
TO QUALIFIED SERVICE PERSONNEL.

275 W Sub Bass System

B.K. Electronics
Southend-On-Sea
Essex. England

1) High Level Input connector for connection to amplifier output

2)

igh Level Gain Adjust

3)

Low Level Input RCA connectors for connection to pre-amp output, Dolby output or other

dedicated sub outputs

t

4)Low Level Gain Adjust

5)Low Level Filter Bypass - In = Filter in operation - Out = Filter Bypassed.

In the Out /

L.F.E. Position the filter is opened wide to allow the optimum performance from processor

6)Frequency Contour, set up so as to integrate with main loudspeakers.

7)Continously variable phase control

8)Power Off/On Switch

9)IEC mains input connector. (Fuse Drawer contains spare 2AT fuse)

(6)

SPECIFICATION

System Type:

Drive Units:

Amplifier:

Inputs:

Nominal impedance/input voltage:

Sensitivity/Features:

Dimensions HxWxD:

Weight each unpacked:

Color finishes:

Infinite Baffle Sub-bass system with on-board amplification and active
filtering. Fully optimised enclosure manufactured from critically damped
18mm and 25mm MDF

250mm 10“ high-efficiency unit. Extreme long stroke composite fiber
cone driven by a 2 ” 50mm voice coil. Heavy-duty non-resonant cast
aluminium chassis and fully optimised stacked magnet system.

275W RMS DC coupled bi-polar.

High Level 100K ohm unbalanced via Neutrik Speakon connector
Low level 10K unbalanced via gold plated RCA connectors.

110/120v (220/240v) where applicable.

Phase control 0 and 180 Deg.
High and low level mixing capability.
Automatic Speaker Protection

XLS200 390D x 295H x 295W / 15.35“ x 11.61” x 11.61”
XLS200-DF 345D x 355H x 295W / 13.58“ x 13.98” x 11.61”

17.5Kg - 38.5 lbs.

Cherry ,Light Oak, Black and Silver

Quiescent Power Consumption:

14 W

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