HK hk0206 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
ALPHA
12.09.2007
Directory
features
drawing-numbers-example
standard for single wire confection
HK0206-LUCAS ALPHA
exploded drawings:
page: 3-8
page: 10
page: 11
page: 12
top complete Rev.: A page: 13-14
top front grille Rev.: A page: 15
sub complete Rev.: A page: 16-17
sub front grille Rev.: A page: 18
chassis Rev.: A page: 19-21
cabling Rev.: A page: 22
quad amp Rev.: A page: 23
PWM Rev.: A page: 24
layout diagrams
circuit diagrams
preamp Rev.: A page: 25-29
inputboard Rev.: B page: 30-31
sub output Rev.: A page: 32
LED-board Rev.: A page: 33
preamp Rev.: B page: 34
inputboard Rev.: A page: 35
LED-board Rev.: A page: 36
crossover Rev.: A page: 37
L.U.C.A.S ALPHA Manual 1.0
Welcome to the HK AUDIO
family!
Thank you for choosing an HK AUDIO product.
The HK AUDIO active system L.U.C.A.S ALPHA is a
complete sound reinforcement system comprising
two satellites and a subwoofer equipped with a
power amp and all the electronics required to drive
the bass bin and satellite. Painstakingly fine-tuned to
match the speakers for the best possible sound and
superior impulse response, the electronic circuitry
makes this system so easy to handle and protects it
from overload.
You don‘t have to worry about tweaking frequencies
and finessing levels. All you have to do is set up the
system components, connect the signal-carrying and
power cords, and you‘re ready to roll.
In order to engineer such advanced systems, our engineers developed new technologies specifically for
them. Unique features make an active HK AUDIO
sound reinforcement system stand out in the crowd
of far more basic active cabinets.
Best wishes from the HK AUDIO team. We hope you
enjoy your L.U.C.A.S ALPHA system as much as we
enjoyed developing it!
Warranty
Register your L.U.C.A.S ALPHA using the enclosed
warranty card to extend your warranty to five years
free of charge! Use the convenient online registra-
tion option at www.hkaudio.de. If you are unable
to register online, please complete the enclosed
warranty card completely and mail or fax it to us.
Important note:
Be sure to register the subwoofer and satellites with
a separate registration card for each.
The registration is only valid if the warranty card is
filled out and returned to HK AUDIO or the device is
registered via Internet within 30 days of the date of
purchase. We are also interested in learning where
and by whom our devices are used. This information
will help us design future products. Your data are of
course protected by privacy laws.
Thank you!
HK AUDIO
®
Technical Service
Postfach 1509
66959 St. Wendel, Germany
Table of contents
1 L.U.C.A.S ALPHA System Components . . . . . . . .6
2 Transport. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3 Connections and Control Features . . . . . . . . . . .7
4 Tips and Tricks . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5 L.U.C.A.S ALPHA Accessories . . . . . . . . . . . . . . .9
6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . .9
7 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5
DDO™ Controller technology
The DDO™ Controller leverages 56-bit computing
power to compensate for the varying speaker-dependent dynamic response of PA components such as
low-frequency woofers, midrange and high-frequency
speakers, power amps, and crossovers. DDO™
neutralizes undesirable discoloration caused by distortion, partial oscillations, and resonance, yielding
a crisp, assertive, and utterly natural-sounding sonic
image.
Digital amping for enhanced efficiency and dynamic
response
With an efficiency rating topping the 90% mark,
Class D digital power amps are substantially smaller,
lighter, and more compact than conventional amps.
The reduced thermal load on components enhances
reliability, while the far faster slew rate and higher
attenuation factor audibly enhances the speed and
precision of the system’s dynamic response.
Multi-band limiting and companding
Several matched limiters and companders are finetuned and optimized to process different frequency
ranges. This speaker-independent approach to
signal processing delivers natural-sounding dynamic
response across the entire frequency spectrum and
an assertive yet finely balanced sonic image.
Subsonic filter
The integrated subsonic filter cuts unwanted ultralow frequencies. Infra sub-bass signals resulting
from stage rumble, wind or similar sources place
heavy demands on the power amp to render frequencies so low that they exceed the useful range of
the speaker cabinet. The subsonic filter protects the
amp from these frequencies, thereby increasing the
entire system’s output power.
• Protects power amps and speakers from harmful
ultra low frequencies
• Enables cleaner and tighter bass response and
higher output levels
Making the most of sonic energy with DuoTilt™
The DuoTilt™ 3/7 pole mount allows sound energy
to be utilized far more efficiently. It offers two angles
of tilt (3°, 7°), enabling the satellites to be aligned
precisely toward the audience. Troublesome ceiling
reflections are minimized; the soundscape is clearer,
tighter, and more focused.
Easy setup and handling for less pre-gig stress
Like all HK AUDIO active rigs, L.U.C.A.S ALPHA was
conceived as a cohesive system comprising painstakingly matched components. This rig was engineered for easy portability and swift set-up. Handling is
simple, with no complicated tweaking required.
• Genuine system design: All components are
precision-matched.
• Swift set-up & easy handling to save time
• Less stress = more fun + better music
Unique features for premium performance
English
L.U.C.A.S ALPHA Manual 1.0
1 L.U.C.A.S ALPHA System
Components
Subwoofer
The L.U.C.A.S ALPHA subwoofer’s housing is split
into two chambers. The front chamber serves as the
speaker cabinet for the 18" direct-loaded woofer,
which has a power handling capacity of 1,200 watts
and a nominal impedance of 4 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 12" HK Audio Custom
speaker and a 1.4" compression driver with a
60° x 40° BEM CD horn. They are rated for
400 W RMS power handling capacity and a nominal
impedance of 8 ohms.
The newly developed, integrated HK AUDIO DuoTilt™ 3/7 pole mount allows sound energy to be
utilized far more efficiently. It minimizes annoying
ceiling reflections, thereby achieving a clearer,
tighter, and more focused sonic image. The cabinet
is always 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 L.U.C.A.S ALPHA 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 ALPHA is sure to deliver
satisfying performance for a long time to come.
More about limiters
Limiters are designed to protect power amps and
connected speakers from harm. 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 soundscape and elicit dynamic distortion. At peak volume levels, for example, vocals may
fail to cut through the mix and instruments that are
played percussively 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
acoustical tools, though they of course also protect
the system.
HK AUDIO DuoTilt™
7
3 Connections and Control
Features
L.U.C.A.S ALPHA Subwoofer
1 Input Left and Input Right
(Combination XLR / 1/4" jack ports)
L.U.C.A.S ALPHA is equipped with separate left and
right channel inputs that serve to connect a mixer.
Connecting cords: Connect the cords routing the
signal from your mixer (master left/right, line out, or
a similar circuit) to the balanced inputs using a mic
cord equipped with XLR connectors. Ensure the XLR
connectors’ pin assignments are as follows:
1= ground, 2= +, 3= -.
You can also use a 1/4" stereo jack plug to route
signals via balanced circuits. Use a mono 1/4" plug
to patch in unbalanced signals.
More about pin assignments
The XLR port’s pin assignments comply with the
international IEC 268-12 standard. In accordance
with this standard, pin 1 is the ground, while
pin 2 carries the positive signal and pin 3 the
negative signal. The stereo 1/4" jack’s tip carries the
positive signal, its ring carries the negative signal,
and the ground circuit is routed via the sleeve.
Inserting an unbalanced mono plug, automatically
engages the input’s unbalanced operating mode.
2 Through Left, Trough Right
Connecting cords: Use this parallel output to route
the line signal (left or right) to other systems,
outboard components, monitor power amps, etc.,
via XLR cords.
3 Limiter LEDs
Much like rev counters, these LEDs indicate the
active system’s operating status. For more info, read
More about limiter LEDs
4 Gain
Handling: 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 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 12 o’clock position (0 dB). 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 ALPHA at the signal source, adjust
it using the Gain knobs (see also Tips and Tricks).
5 Balance
Handling: Twist the Balance knob to the left or right
to adjust the relative balance of levels between the
left and right channels.
6 DDO™ controller
Handling: The Select button switches between the
two system presets CD and LIVE.
The two color LEDs indicate the currently active
system preset (CD = blue / Live = yellow).
7 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 bass and
mid/high ranges (via satellite) are rendered in balanced musical proportion. If desired, twist the Subwoofer Level knob to the left to cut the subwoofer’s
level by as much as -12 dB and to the right to boost
it by up to +6 dB.
8 Ground
Ground lift button for separating the signal and
chassis ground in case of humming noises.
In the event of low-frequency hum, engage the
Ground switch. If this doesn’t solve the problem,
check for defects all cords connected to L.U.C.A.S
ALPHA as well as all cords routing signals to the
mixing console (see also Tips and Tricks). Engaging
this button severs the ground circuit.
9 Sensitivity
This switch boosts input sensitivity. Setting it to
-6 dB rather than the standard +4 dB setting boosts
the input level 10 dB. For the widest dynamic range
in live applications, we recommend setting the
switch to +4 dB.
Recommendation: Using a professionell mixer, the
input sensitivity should be set to +4 dB. This lets you
take advantage of the system’s full dynamic range
and helps to avoid system overloads.
Using a signal with a lower output level the input
sensitivity should be set to -6 dB.
English
1
2
3 3
4 5 7 8
6
9
1
2
L.U.C.A.S ALPHA Manual 1.0
10 External Sub Out
This DDO-controlled output serves to connect an
additional ALPHA XTension Subwoofer.
11 Power Switch
Handling: Engage to turn the active system on and
off. Note that 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. Always switch the active L.U.C.A.S
ALPHA system on last after you switch on all
connected devices, and switch it off first before you
switch off all connected devices.
12 Speakers Out/ To Satellite Left and Right
Connecting cords: Connect these Speakon outputs
to the left and right L.U.C.A.S ALPHA satellites using
cords equipped with Speakon connectors. Note: Be
sure to rotate the Speakon connectors clockwise
until they lock in place!
13 Mains Input
Connecting cords: Use the factory-included
PowerCon mains cord to connect 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 ALPHA system’s electronic components.
14 Fans
These ventilation fans and vents on the side of the
housing keep the power amp modules cool. Always
keep the fan and vents free of dirt and debris,
ensuring they remain unobstructed so air can
circulate freely.
L.U.C.A.S ALPHA Satellite
15 Input
Connecting cords: Connect the Speakon inputs to
the left and right L.U.C.A.S ALPHA satellite outputs
using cords 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.
Question: Can I connect speakers other than
L.U.C.A.S ALPHA satellites to the L.U.C.A.S ALPHA
subwoofer?
Answer: The system’s components are acoustically
matched for optimum audio performance and may
be operated in the indicated configuration only.
Using other satellites can degrade the sound and
damage the power amp. The outputs’ nominal impedance is 8 ohms, and impedance may not fall short
of this value. Be sure to connect no more than one
satellite enclosure to a speaker output.
You can connect an alpha XTension Subwoofer to the
DDO-controlled External Sub Out port.
10
11
12 1213
15
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, and
any other liquids away from the cabinets to prevent
short circuits.
• Place the subwoofer well away from walls and
ensure it isn’t covered by curtains and the like. This
is vital to keep the power amps cool.
• Ensure the vents on the subwoofer’s side panels
are free of debris and fans can rotate freely. Otherwise, electronic components may overheat and
suffer damage.
• L.U.C.A.S ALPHA delivers optimum sound, so
you should provide it with optimum input signals!
Noise such as humming is generally caused by
defective cables, the wrong type of cords, or unbalanced signals routed into the mixing console.
Check all signal and mains cables.
• Prevent 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 ALPHA have
sufficient power ratings, and that they don’t distort
because they‘re running at their respective limits.
Provide an undistorted signal to the system that
doesn’t have to be cleaned up by backing off the
Gain knob.
• Avoid ground loops! You may encounter a ground
loop when the mixer is grounded via a mains cord
which isn’t connected to the same mains circuit as
L.U.C.A.S ALPHA. To prevent this problem, always
connect the L.U.C.A.S ALPHA system and the
mixing console to the same electrical circuit (same
phase!). If your equipment hums despite this precaution, the Ground switch can be a great help.
CAUTION: Never tape over the plug’s ground terminal – this endangers lives!
5 L.U.C.A.S ALPHA Accessories
HK AUDIO Speaker Add On Package
This is the complete L.U.C.A.S ALPHA accessory kit
consisting of two aluminum cabinet tripods, one gig
bag, and two speaker cords.
HK AUDIO Protective Covers for L.U.C.A.S ALPHA
This set comprises one cover for the subwoofer
and two covers for the satellites. Tear-resistant
and water-repellant, these rugged bags are thickly
padded to afford lasting protection for the L.U.C.A.S
ALPHA system during transport.
To learn more about Original HK AUDIO
Accessories, talk to your HK AUDIO dealer or visit
www.hkaudio.com.
6 Troubleshooting
The display does not light up when you power up.
1 Check if the PowerCon mains cord is plugged into
the Mains Input.
2 Check if the mains power supply is providing
current.
The display lights up, but no sound is issuing from
the cabinets.
1 Check the cords 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 cords for defects.
5 Check if the Speakon connectors are engaged
in their sockets (rotated to the right). The must
be locked in place to establish an electrical
connection.
The subwoofer’s low frequency output is weak.
1 Check the setting of the Subwoofer Level knob.
Adjust this knob to set the volume of the subwoofer to the desired level.
The rendered signal sounds distorted.
1 Check the LED displays on your mixer. They should
not be constantly in the red. If necessary, back off
the volume at the mixer.
2 If the LED displays on your mixer are in the green,
back off L.U.C.A.S ALPHA’s Gain knob.
3 Observe the LEDs of the Limit Left, Limit Right and
Limit Subwoofer displays on L.U.C.A.S ALPHA’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 down the Gain knob.
Annoying humming
1 Check the cords connecting the signal source to
L.U.C.A.S ALPHA. Replace defective cords.
2 If you cannot pinpoint the cause of the humming,
engage the Ground switch. This should remedy the
problem in most cases.
Level problems
1 Check the Sensitivity switch’s setting. When it is
set to +4 dB, and you feed in a signal with a level
of +4 dB (for example, from a connected mixing
console), the system delivers 0dB output level.
This lets you take advantage of the system’s full
dynamic range. When it is set to -6 dB, and you
feed in a signal with a level of -6 dB, the system delivers 0 dB output level. This boosts the
system’s output level by 10 dB, but reduces the
dynamic range at higher volumes. This is why
we recommend running the rig at +4 dB in live
situations.
English
L.U.C.A.S ALPHA Manual 1.0
This is to certify that
HK AUDIO® L.U.C.A.S ALPHA
complies with the provisions of the Directive of
the Council of the European Communities on the
ap proximation 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, 04/19/07
* Stamer Musikanlagen manufactures exclusively
for HK AUDIO®.
DRAWING-NUMBERS
EXAMPLE
HK0106-EX-R01-1A
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
DEPARTMENT:
R = R&D
SERIAL NUMBER
VERSION
REVISION
Stand
W
Y
r
Standard for single wire confection.
16 B 150 638 I - 485 W Z I 1015
style 1015 according UL specifications
I = completely insulated with black shrinktube or appropriate sleeve
IT = partly insulated; only crimp connection insulated.
no marking = without insulation
Z = with additional junction
no marking = without additional junction
W = angled faston
no marking = straight faston
17. Jun 04
Faston connector brass tin-plated DIN 46245
638 = 6,3 * 0,8 [mm]
488 = 4,8 * 0,8 [mm]
485 = 4,8 * 0,5 [mm]
288 = 2,8 * 0,8 [mm]
285 = 2,8 * 0,5 [mm]
abiso = 5mm bared and tin-plated (teilabzug)
text for special constructions, (for example. 4mm ringshaped faston)
the larger faston connector always mentioned at first. (Nathan drawing number controlling)
lenght in mm within a 50 mm raster
colour
B = black (phase conductor)
R = red
BR = brown
BL = blue (neutral conductor)
= white
G = yellow-green (ground bonding/ earthing connection)
if fully insulated (I) insulation with blue shrinktube
if partly insulated (IT) use IF 602 485 .
if fully insulated (I) insulation with blue shrinktube
if partly insulated (IT) use IF 602 485
cross section
16 = AWG 16 (prefered usage)
Q1.5 = H07VK 1,5mm² (prefered usage)
wire designation:
P + lfd Nr. = AWG single wire black, red, blue, brown or white
E + lfd Nr. = AWG single wire green- yellow
L + lfd N
FQL + lfd Nr. = crossover wiring H07VK
Regarding special wirings like wiring harness or similar, drawings will be prepared and appropriate
. = twisted AWG double wire, lenght specification always in twisted condition
drawing numbers will be stored in the article archive.
Confidential, for authorized service technicians only! Do not disclose
this information to or share these documents with third parties.
TECHNICAL SERVICE:
Stamer Musikanlagen GmbH • Magdeburger Str. 8 • 66606 St.Wendel • Germany
Music & Sales P.E. GmbH • Leipziger Str. 3 • 66606 St.Wendel • Germany
Service Documents
HK0206
L.U.C.A.S
ALPHA
Loading...