Hughes Kettner lucas impact sub hk1005 Schematic

Service Documents

Confidential, for authorized service technicians only!

Do not disclose this information to or share these documents

with third parties.

Vertraulich! Nur für autorisierte Servicetechniker!

Nicht zur Weitergabe an Dritte freigegeben!

TECHNICAL SERVICE:

Stamer Musikanlagen GmbH • Magdeburger Str. 8 • 66606 St.Wendel • Germany
Music & Sales P.E. GmbH • Leipziger Str. 3 • 66606 St.Wendel • Germany

Note!

The components used in this product - particularly parts affecting
safety as well as speakers and transformers - were developed and
manufactured to certain specifications. Please use original spare
parts only to ensure the product remains fully functional and safe.

Achtung!

Die in diesem Produkt verwendeten Komponenten, insbesondere
sicherheitsrelevante Teile, Lautsprecher und Transformatoren
wurden nach spezifischen Vorgaben entwickelt und gefertigt.
Bitte benutzen Sie ausschließlich Original-Ersatzteile – nur so ist
die volle Funktionalität und Sicherheit gewährleistet.

L.U.C.A.S.

IMPACT

SUB

2006/07/03

Directory

features page: 3-8

drawing-numbers-example page: 9

standard for single wire confection page: 10

HK1005-LUCAS IMPACT Subwoofer page: 11

exploded drawings: complete Rev.: A page: 12-13

front grille Rev.: A page: 14
chassis/ cabling Rev.: A page: 15-19
preamp assembly Rev.: A page: 20
preamp Rev.: A page: 21
amp module page: 22

spare parts list Rev.: A page: 23-24

circuit diagrams preamp Rev.: D page: 25-29

LED-board Rev.: A page: 30
input-board Rev.: B page: 31
power filter Rev.: A page: 32

layout diagrams preamp Rev.: C page: 33

L.U.C.A.S IMPACT Manual 1.0

1 L.U.C.A.S IMPACT System

Components

Subwoofer

The L.U.C.A.S IMPACT subwoofer’s housing is split
into two chambers. The front chamber serves as the
speaker cabinet for the 15" direct-loaded loud­speaker, which has a power-handling capacity of
700 W RMS and a nominal impedance of 8 ohms.
The active electronic circuitry, the power unit,
DDO™ digital controllers and Class D power amps
are housed in a separate compartment at the rear of
the cabinet.

Satellites

Satellites are loaded with a 8" HK AUDIO Custom
speaker and a 1" compression driver with a 60° x 40°
CD horn. They are rated for 250 W RMS power-hand­ling capacity and a nominal impedance of 8 ohms.

The newly developed, integrated MonoTilt ™ pole
mount allows sound energy to be utilized with great
efficiency. Troublesome ceiling reflections are
minimized; the sound is clearer, tighter, and more
focused.
Beyond that, the cabinet is stabilized at its center of
gravity - no wobbling, tilting, or unintentional
turning.

2 Transport

To transport the system, simply set the subwoofer
on its casters and place the satellites onto the sub­woofer with the foam-rubber grille side facing down.
Secure the satellites, for example, using a locking
strap. Use original HK Audio L.U.C.A.S IMPACT
protective covers to gear up your personal system
for the rigors of the road. Amply padded and
protected against moisture, your L.U.C.A.S IMPACT
is sure to deliver satisfying performance for a long
time to come.

More about limiters

Limiters are designed to protect power amps and
the speakers connected to them from damage. The
functionality and response of a limiter is determined
by parameters called attack time, threshold and
release time. Adjusting these parameters incorrectly
can degrade the sound and bring about dynamic
distortion. At peak volume levels, for example,
vocals may fail to cut through the mix and
instruments that are played percussively may lose
their punch and dynamics.

HK AUDIO limiting technologies are more than
merely technical tools serving to protect compo­nents. We put a premium on authenticity, that is,
retaining an audio event’s true dynamics. This
explains why our limiters are first and foremost
designed to optimise the sound, though they of
course also protect the system.

7

3 Connections and Control

Features

L.U.C.A.S IMPACT Subwoofer

1 Limiter LEDs

Much like rev counters, these LEDs indicate the
active system’s operating status. For more info, read
the sidebar “More about Limiter LEDs.”

2 Gain

Operation: Turn the Gain knob all the way down
(counterclockwise) before switching the system on.

Ensure the system is connected to the satellites and
all other connected components are on before
powering it up. Be sure to switch on the connected
mixer as well as all signal sources connected to it,
for example, keyboards, amps, effects, and so forth.

After you power the system up, set the Gain knob to
the 0 dBV or 12 o’clock setting. This is the preferred
level if you have connected a mixer. (Note: If you
connect a CD player or a keyboard directly to the
system, you may not be able to achieve peak volume
at this setting. If this is the case, twist the Gain knob
to the far right.)

If you hear distortion or a saturated signal, first
check the signal sources and, if possible, reduce the
output signal level there. If you are unable to turn
down the level of the signal sent to L.U.C.A.S
IMPACT at the signal source, adjust the input
sensitivity using the Gain knobs. (see also Tips and
Tricks—section 4).

3 Balance

Operation: Twist the Balance knob to the left or right
to adjust the relative balance of levels between the
left and right channels.

4 Display

Display: The numeric display indicates the currently
selected system configuration (0 to 5).

0 Mute - System switched to silent mode.
Zero sound signal reproduction.

1 Speech - Set-up for speech.
This mode places emphasis upon vocal and spoken
language reproduction. To minimize subsonic inter­ference and background noise over the microphone,
the subwoofer level is reduced.

2 Live 1 - Set-up 1 for use during live performance.
The Live 1 setup enables punchy, dynamic bass with
rapid transient response. Vocals are likewise
predominant in this sound profile.

3 Live 2 - Set-up 2 for use during live performance.
The Live 2 set-up delivers softer and deeper bass
reproduction at a slightly lower level. The vocals are
slightly less in the foreground when compared to the
Live 1 set-up.

4 DJ 1 - Set-up 1 for reproduction of music from
CDs.
The DJ 1 set-up provides an ideal setting for CD
reproduction, with strong deep bass, discreet
midrange and accentuated highs.

5 DJ 2 - Set-up 2 for reproduction of CD/ MP3
music.
Like DJ1 above, the DJ 2 set-up can also be used for
CD reproduction, but is optimised for MP3-encoded
sources to revitalize the sound with more dynamic
bass, smoother highs and a more natural, less
compressed sound.

Note: A flashing display indicates that the controller
has muted the input. This mute function is triggered
via the input signal level. The system is muted when
its level falls below the threshold value. The system
is enabled as soon as the input signal level rises
above the threshold value.

5 Up/Down Buttons

Press these buttons to change system configurati­ons. Operation: Simultaneously press and hold the
Up and Down buttons for about 1-2 seconds. Once
the letter U (Unlock) appears briefly in the display
you can use the Up and Down buttons to select the
desired setup. The buttons lock again automatically
after a moment, at which time the letter L (Lock)
appears briefly in the display.

6 Subwoofer Level

Handling: When this knob is set to the 12 o’clock
position, the subwoofer’s and the satellite’s
respective volumes are matched, ensuring the
proper balance between the subwoofer’s bass output
and the stallites’ mid/high-range output. If desired,
you can twist the Subwoofer Level knob to the left,
i.e. counterclockwise, to cut the subwoofer’s level by
as much as -12 dB and to the right to boost it by as
much as 6 dB.

7 Ground

Ground lift button for separating the signal and
chassis ground in the event of hum. To rid the
system of low-frequency hum, press the Ground
switch in. If this doesn’t solve the problem, check all
power and audio cables connected to L.U.C.A.S
IMPACT for damage, as well as all cables routing
signals to the mixing console (see also Tips and
Tr icks in Section 4).

L.U.C.A.S IMPACT -- user panel

2 3 6 7

1 4 5 1

English

L.U.C.A.S IMPACT Manual 1.0

8 Input Left and Input Right (Combination XLR/1/4"

jacks)
L.U.C.A.S IMPACT is equipped with separate left and
right channel inputs for connecting to a mixer.

Connections: Connect the audio cables that route
the signal coming from your mixer (master
left/right, line out, or a similar circuit) to these
balanced inputs using microphone cables equipped
with XLR connectors. The XLR connectors’ pin
assignments must be as follows:
1= ground, 2= +, 3= -.

You can also use a 1/4" Tip-Ring-Sleeve plug to route
signals via balanced circuits. Unbalanced signals can
be patched in via a mono plug.

9 Through Left, Through Right

Connections: Parallel outputs for routing the line
signal (left or right) to other systems, outboard com­ponents, monitor power amps, etc., via XLR cables

10 Speaker Out (To Satellite Left und Right)

Connections: Connect these Speakon

®

outputs to
the left and right L.U.C.A.S IMPACT satellites using
speaker cables equipped with Speakon

®

connectors.
Note: Be sure to rotate the Speakon®connectors
clockwise until they lock in place!

11 Power Switch

Operation: On/off switch for the active system.
The display on the system controller glows orange to
indicate that the system is on.

Note: Once you have engaged the Power switch, it
will take several seconds for the display to light up
and the system to be ready for operation. This is
standard procedure and does not indicate a malfun­ction.

The active L.U.C.A.S IMPACT system should always
be switched on last after you power up all equip­ment connected to it, and should be switched off
first before you switch off all the other equipment
connected to it.

12 Mains Input

Connections: Use the factory-included mains cable
(power cord) to connect from this socket to a wall
receptacle. Caution! Make sure the local mains
voltage matches the voltage specified on the device.
Connecting the system to the wrong mains voltage
may destroy the L.U.C.A.S IMPACT system’s
electronic components.

13 Mains Cable Tab

Clamp the power cable into the tab to prevent it
from being pulled out inadvertently.

14 Fans

These fans (on the side and back of the housing)
keep the power amp modules cool. Always keep the
fan and ventilation vents free of dirt and debris, and
ensure they remain unobstructed so air can circulate
freely.

L.U.C.A.S IMPACT Satellite

Input

Connections: Connect the Speakon®inputs to the
left and right L.U.C.A.S IMPACT satellite outputs
using speaker cables equipped with Speakon“
connectors.
Note: Be sure to twist the Speakon®connectors
clockwise until they lock in place! You must first
disengage the safety catch before you can unplug
the connector. To do this, pull the bayonet catch
towards the cord.

8

12

13

14

11

10 10

9 8 9

L.U.C.A.S IMPACT - user panel rear

9

4 Tips and Tricks

• Do not expose electronic circuitry to moisture!
When you set the system up outdoors, be sure to
protect it against rain. Keep soft drinks, beer or any
other liquids well away from the cabinets to protect
their electronic components from short circuits.

• To ensure proper ventilation, make sure the sub­woofer is placed a sufficient distance away from
walls and isn’t covered by curtains and the like.
This is vital to keep the power amps cool.

• Ensure that the vents on the subwoofer’s side
panels are free of dirt and that the fan blades can
rotate freely. Otherwise, electronic components
may overheat and suffer damage.

• L.U.C.A.S IMPACT takes care of delivering
optimum sound—so provide it with optimum
input signals! Noise such as hum is generally
caused by defective cables, the wrong type of ca­bles, or unbalanced signals being fed to the mixing
console. Check all audio cables and mains cables.

• Avoid distortion! Not only is it unpleasant to your
audience’s ears, it also endangers your equipment.
Make sure all components that are connected
directly and indirectly to L.U.C.A.S IMPACT have
sufficient power ratings, and that they are not
distorting from being driven at their respective
limits. Provide a clean, undistorted signal to the
system that won’t require backing off the Gain
knob to clean it up.

• Avoid ground loops! If, for example, you connect
the mixer to one mains circuit/wall outlet, and
L.U.C.A.S IMPACT to another, you may encounter a
ground loop. To prevent this problem, always
connect the L.U.C.A.S IMPACT system and the
mixing console to the same electrical circuit (same
phase!). If your equipment hums despite this pre­caution, the Ground Lift switch can be a great help.

CAUTION: Never tape over the plug’s ground
terminal – this endangers lives!

5 L.U.C.A.S IMPACT Accessories

HK AUDIO Speaker Add On Package

This is the complete L.U.C.A.S IMPACT accessory kit
consisting of two aluminum cabinet tripods, one gig
bag, and two speaker cables.

HK AUDIO Protective Covers for L.U.C.A.S IMPACT

This set comprises one cover for the subwoofer and
two covers for the satellites. Tear-resistant and
water-repellant, these rugged covers are thickly
padded to afford lasting protection for the L.U.C.A.S
IMPACT system during transport.

To learn more about Original HK Audio Accessories,
talk to your HK AUDIO dealer or visit
www.hkaudio.com.

English

L.U.C.A.S IMPACT Manual 1.0

6 Troubleshooting

The display does not light up when switched on.

1 Check if the power cable is plugged into the Mains

Input.

2 Check if the mains power supply is providing

current.

The display lights up, but there is no sound coming
from the cabinets.

1 Check the cables connected to the Left and Right

inputs.

2 Check if the signal sources (mixer, keyboard, CD

player) are on.
3 Is the Gain knob turned up?
4 Check the speaker cables for damage.
5 Check if the Speakon“ connectors are fully engaged

in their sockets (rotated to the right). They must be
locked in place to establish an electrical
connection.

The subwoofer’s low frequency output is too soft.

1 Check the setting of the Subwoofer Level knob.

Adjust this knob to set the volume of the sub­woofer to the desired level.

Sound seems distorted.

1 Check the LED displays on your mixer. They should

not be constantly in the red. If necessary, reduce
the volume at the mixer.

2 If the LED displays on your mixer are in the green,

turn back L.U.C.A.S IMPACT’s Gain knob.
3 Watch the LEDs of the Limit Left, Limit Right and

Limit Subwoofer displays on L.U.C.A.S IMPACT’s
control panel. These may light up yellow, but only
intermittently. Under no circumstances may they
continuously illuminate yellow. If this is the case,
turn the Gain down (knob counterclockwise).

Annoying hum

1 Check the cables connecting the source of the

audio signal to L.U.C.A.S IMPACT. Replace any
damaged cords.

2 If you cannot pinpoint the cause of the humming,

press the Ground switch in. This should remedy

the problem in most cases.

This is to certify that

HK AUDIO®L.U.C.A.S IMPACT

complies with the provisions of the Directive of
the Council of the European Communities on the
approximation of the laws of the Member States
relating to electromagnetic compatibility (EMC
Directive 89/336/EEC) and the low voltage Directive
(73/23/EEC). This declaration of conformity of the
European Communities is the result of an examination
carried out by the Quality Assurance Department
of STAMER GmbH in accordance with European
Standards EN 50081-1, EN 50082-1and EN 60065
for low voltage, as laid down in Article 10 of the
EMC Directive.

Stamer Musikanlagen
GmbH*
Magdeburger Str. 8
66606 St.Wendel

Lothar Stamer Dipl.Ing.
Managing Director
St.Wendel, 01/03/06

* Stamer Musikanlagen manufactures exclusively
for HK AUDIO

®

.

Service Documents

TECHNICAL SERVICE:

Stamer Musikanlagen GmbH • Magdeburger Str. 8 • 66606 St.Wendel • Germany
Music & Sales P.E. GmbH • Leipziger Str. 3 • 66606 St.Wendel • Germany

L.U.C.A.S IMPACT Subwoofer

Line In: XLR female (pin 1= ground; 2= +, 3= -)
Input: Electronically balanced & floating
Input impedance: 47 k ohms
Sensitivity: +4 dBu
Max. input level: + 19 dBu
Parallel out: XLR male (pin 1= ground; 2=+, 3= -)
Speaker outputs: Speakon

®

NL 4 (pin 1+= +, 1-= -)

Digital controller:
Sampling frequency: 24 bits/ 48 kHz
Internal signal processing: 56 bits

Amplifiers:
Subwoofer output: 1x 500 W @ 8 ohms RMS /

Class D power amp

Satellites output: 2x 250 W @ 8 ohms RMS /

Class D power amp

Protective circuits: DDO™ controlled multi-band limiter

Speakers:
Woofer: 1x 15"
Subwoofer frequency response: 45 Hz -130 Hz, ± 3 dB

36 Hz -130 Hz, - 10 dB

SPL 1W / 1m: 101 dB (half space)
Max. SPL / 1m: 127 dB @ 10% THD (half space)

Weights and measures:
Weight: 32 kg / 70.4 lbs.
Dimensions without casters: 47.5 cm x 47 cm x 58.5 cm
(WxHxD) 18 3/4 " x 18 1/2" x 23"

L.U.C.A.S IMPACT Satellite

Inputs:
Speaker input: Speakon NL 4 (pin 1+= +, 1-= -)

Speakers:
Woofer: 1x 8“
Driver: 1x 1"
Directivity: 60°x 40° CD horn

Overall nominal impedance: 8 ohms
Nominal power handling: 250 W RMS
SPL 1W / 1m: 103 dB (half space)
Max. SPL / 1m: 125 dB @ 10% THD (half space)
Frequency response: 130 Hz - 19 kHz, +/- 3 dB
(via DDO™ Controller)
Crossover frequency (passive): 2.2 kHz/ 12 dB / octave
Driver protection: Dynamic protective circuit
Pole mount: HK Audio MonoTilt™ 36 mm, -10°

Weights and measures:
Weight: 7.5 kg / 16.5 lbs.
Dimensions (WxHxD): 25.8 cm x 38.5 cm x 28.5 cm

10 1/8" x 15 1/8" x 11 1/4"

General electrical data::

Protection class 1 (protectively earthed)

Max. current consumption: 4.4 A (220 – 240 V) • 8 A (110 – 120 V)
Max. power consumption: 1000 Watts
Mains voltage range: +/- 10%
Internal fuses: 250V/ T 8A IEC127
Ambient temperature range during operation: -10° C to +35° C

Technical Specifications L.U.C.A.S IMPACT

DRAWING-NUMBERS

EXAMPLE

HK0106-EX-R01-1A

VERSION

SERIAL NUMBER

DEPARTMENT:
R = R&D

REVISION

PROJECT-NR.:
HK = HK AUDIO
HU = HUGHES&KETTNER
MP = MINDPRINT

CHARACTER:
BL = SHEET METAL / BLECH
EX = EXPLODED DRAWING / EXPLOSIONSZEICHNUNG
HZ = CABINET / HOLZGEHÄUSE
KU = PLASTIC / KUNSTSTOFF
LP = PCB / LEITERPLATTEN
SO = MISCELLANEOUS / SONSTIGES
SP = SCHEMATIC / SCHALTPLÄNE
TR = TRANSFORMER / TRANSFORMATOR
GK = WIRING DIAGRAM / GERÄTEVERKABELUNG

Stand

Standard for single wire confection.

16 B 150 638 I

-

I

IT

Z

W

Faston connector brass tin-plated DIN 46245

638

488

485

288

285

abiso

text

colour

B

R

BR

BL

W

YG

cross section

16

Q1.5

P + lfd Nr.

E + lfd Nr.

L + lfd Nr

FQL + lfd Nr.

17. Jun 04

Regarding special wirings like wiring harness or similar, drawings will be prepared and appropriate

the larger faston connector always mentioned at first. (Nathan drawing number controlling)

485 W Z I 1015

style 1015 according UL specifications

= completely insulated with black shrinktube or appropriate sleeve

= partly insulated; only crimp connection insulated.

no marking = without insulation

= with additional junction

no marking = without additional junction

= angled faston

no marking = straight faston

= 6,3 * 0,8 [mm]
= 4,8 * 0,8 [mm]
= 4,8 * 0,5 [mm] if fully insulated (I) insulation with blue shrinktube

if partly insulated (IT) use IF 602 485 .
= 2,8 * 0,8 [mm]
= 2,8 * 0,5 [mm] if fully insulated (I) insulation with blue shrinktube

if partly insulated (IT) use IF 602 485

= 5mm bared and tin-plated (teilabzug)

for special constructions, (for example. 4mm ringshaped faston)

lenght in mm within a 50 mm raster

= black (phase conductor)
= red

= brown

= blue (neutral conductor)

= white

= yellow-green (ground bonding/ earthing connection)

= AWG 16 (prefered usage)

= H07VK 1,5mm² (prefered usage)

wire designation:

= AWG single wire black, red, blue, brown or white
= AWG single wire green- yellow

. = twisted AWG double wire, lenght specification always in twisted condition

= crossover wiring H07VK

drawing numbers will be stored in the article archive.