HK hk1805 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.
HK1805
CTA
208
2006/10/23
Directory
features page: 3-13
drawing-numbers-example page: 14
standard for single wire confection page: 15
HK1805-CTA 208 page: 16
exploded drawings: complete Rev.: 1B page: 17-18
upper front grille Rev.: 1B page: 19
lower front grille Rev.: 1B page: 20
connector panel subassy./
cabling Rev.: 1C page: 21-23
crossover assembly Rev.: 1B page: 24
crossover PCB Rev.: 1A page: 25
spare parts list Rev.: 1A page: 26-28
circuit diagrams crossover Rev.: 1A page: 29
layout diagrams crossover Rev.: 1A page: 30
ConTour Array™ 1.0
B. ConTour Array™ Speakers
1. The CTA 208 Mid/High Unit
Fig. 1: CTA 208
Design and Construction
The CTA 208 Mid/High unit‘s top and bottom
panels slope at an angle of 4.5°. Water-repellent,
black PU lacquer coats the enclosure made of 18mm, 13-ply birch plywood. Your choices of array
curving angles (or splay) are 0° and 9°. The baffle
board cover consists of a metal grille; found behind
it are two CD horns equipped with acoustical lens
for the four 1" drivers.
The CTA 208 weighs 29 kg. It is 51 cm wide, 52.5
cm high and 34.6 cm deep (including rigging
attachments). Two grips on the side panels simplify
transport and set-up.
Fully integrated rigging attachments comprising
three quick-release pins and three rigging
connectors, two mounted on the sides and one in
the rear, serve to fly the mid/high units.
Electrical and Acoustical Data
The CTA 208 enclosure features two 8" cone chassis
speakers and four 1" B&C high frequency drivers
with a front-mounted acoustical lens in a CD horn
configuration. An internal passive crossover with a
crossover frequency of 2 kHz addresses the drivers
via a special acoustic lens. The CTA 208 enclosure‘s
nominal electrical power-handling is 500 watts
RMS at 8 ohms impedance. It produces 105 dB
(1W@1m) sound pressure, measured under halfspace conditions. Maximum SPL measured under
the same conditions at one meter is 134 dB at 10%
THD. The CDR 108 radiates at a horizontal angle of
100°. Frequency response ranges from 95 Hz to 19
kHz (±3 dB).
1.1 Specifications, CTA 208
A professional two-way system featuring cylindrical
wave technology, this cabinet serves to set up
vertical line arrays and project a coherent wavefront
across the entire frequency range. The precisiontuned enclosure sports two 8" midrange speakers.
Four 1" high-frequency drivers address two constant
directivity horns with 100° horizontal directivity via
a special acoustic lens. Vertical directivity depends
on the number of CT A 208s in use.
The housing is made of 15/18-mm birch plywood
coated with black PU varnish. Its fully integrated
rigging hardware adjusts to two 0° and 9° angles
for setting up line arrays. An integrated pole mount
offers two tilt angles of 3° and 11°. An impactresistant steel grille covers the front.
The active CTA 118 Sub system subwoofer with
an integrated DDO-Pro™ Controller drives the
enclosure. CTA 208‘s frequency response (+- 3dB)
ranges from 95 hertz to 19 kHz. Axial sensitivity is
105 dB, measured under half-space conditions at @
1W / 1m. Maximum SPL measured under the same
conditions with two CTA 208s is 134 dB at 10%
THD. Each unit‘s nominal power handling is 500
watts RMS at 8 ohms.
Connectors: 1 Neutrik NL 4 Speakon.
Dimensions (W x H x D): 51 x 52.5 x 34.6 cm
Weight: 29 kg
Model: HK Audio CTA 208
Connections
The ports are out of harm‘s way on a recessed
connector panel on the CTA 208‘s back. It offers
one Speakon NL 4 connector. Pin assignments are
pin 1+ = mid/high +, 1- = mid/high-.
1.2 The CTA 208 Enclosures‘ Technical Data
Nominal power handling/program/peak: .................. 500W RMS /1000W/ 1500W
Frequency response -10 dB 3): .................................... 80 Hz - 20 kHz
Frequency response+/-3 dB 3): ................................... 95 Hz - 19 kHz
Directivity: .................................................................. 100° horizontal
Sensitivity 1W@1m 1): ................................................ 105 dB
Max. SPL calculated 1): .............................................. 138 dB 2)
Max. SPL peak 1): ....................................................... 136 dB 3)
Max. SPL 1): ............................................................... 134 dB @ 10% THD (200 Hz- 5 kHz) 3)
Nominal impedance: .................................................. 8 ohms
Woofer/midrange speaker: ......................................... 2x 8"
High-frequency driver: ............................................... 4x 1", 2" voice coil
Crossover frequency: .................................................. 2 kHz, 12 dB/ octave
Connectors: ................................................................ 1 Speakon(r) NL 4
Housing (birch): ........................................................ 15/18 mm (1/2"), 9/13-ply
Angles up: .................................................................. 2x 4.5°
Finish: ........................................................................ Black 2-component PU lacquer
Grille: ......................................................................... Metal grille with black acoustic foam
Handles: .................................................................... Two slot grips routed into the side panels
Rigging hardware: ...................................................... DualCurve™, integrated with quick-release pins
Pole mount: ............................................................... HK Audio DuoTilt™
Weight: ....................................................................... 29 kg/ 63.8 lbs.
Dimensions (W x H x D): ........................................... 51 x 52.5 x 34.6 cm; 20" x 20 2/3" x 13 2/3"
Accessories: ............................................................... Touring flight case (2 CTA 208), rigging frame
25
English
1) Measured under half-space conditions2) Based on peak power handling 3) Measured with 2 CTA 208s
Fig. 2: CTA 208 housing dimensions in mm
English
ConTour Array™ 1.0
2. CTA 118 Sub
Fig. 3: CTA 118 Sub
Design and Construction
Made of 18-mm 13-ply birch plywood, waterrepellent, black PU lacquer coats the CTA 118
Sub enclosure. A robust metal grille backed with
laminated acoustic foam rubber covers the baffle
board.
The CTA 118 Sub weighs 59 kg. It is 51 cm wide, 73
high and 71 cm deep. Three slot grips routed into
the side panels enable easy transport and set-up; a
recessed handle is on the lid. The active circuitry
resides in a separate chamber at the back of the
enclosure. A removable dolly protects the electronic
components and simplifies transport.
Electrical and Acoustical Data
The CTA 118 Sub enclosure features an 18" woofer.
The CTA 118 Sub enclosure‘s nominal electrical
power-handling is 700 watts RMS at 8 ohms
impedance. It produces 101 dB (1W@1m) sound
pressure, measured under half-space conditions.
Maximum SPL measured under the same conditions
at one meter is 130 dB at 10% THD. The CTA 118
Sub‘s frequency response ranges from 42 Hz to fx
(+/-3 dB). The two integrated PWM power amps
for the subwoofer and the mid/high output deliver
1000W RMS each.
2.1 Specifications, CTA 118 Sub
A professional active subwoofer equipped with a
DDO-Pro™ Controller and a 1000W RMS PWM
power amp, the CTA 118 Sub delivers excellent
impulse response and exceedingly dynamic lowfrequency response. It features an 18" woofer
mounted in a precision-tuned bass reflex enclosure.
Another 1000W RMS PWM power amp drives
HK Audio CTA 208 or ConTour Series™ speakers.
The rectangular block housing is made of 18-mm
birch plywood coated with black PU lacquer. An
impact-resistant steel grille covers the front. A
removabledolly protects the electronic components
and simplifies transport
Its frequency response ranges from the crossover
frequency down to 42 Hz (-3 dB) and 36 Hz (-10 dB).
Maximum SPL under half-space conditions is 130 dB
at 10% THD.
Connectors: 1 Neutrik NL 4 Speakon output, 1 XLR
female, 1 XLR male, 2 Powercon, 2 RJ45 Ethercon
Dimensions (W x H x D): 51 x 73 x 71 cm
Weight: 59 kg
Model: HK Audio CTA 118 Sub
Connections
Ports are out of harm‘s way on a recessed connector
panel on the CTA 118 Sub‘s back. It offers one
Speakon NL 4 connector. Pin assignments are pin
1+ = mid/high +, 1- = mid/high- . A Powercon mains
socket with another Powercon output connects to
the power supply. A female XLR and a male XLR port
serve to route signals. Two Neutrik Ethercon ports
serve to network several CTA 118 Subs.
2.2 Technical Data, CTA 118 Sub
Integrated Power Amps:
Output power, Subwoofer: ...........................................1000 W RMS, Class D
Output power, Mid/High: ............................................1000 W RMS, Class D
Protection circuits: .......................................................DDO Pro™ Limiter, thermal protect, short-circuit
Line In/ Through: ........................................................ Female XLR, electronically balanced & floating
Mid/High Out: .............................................................1 Speakon(r) NL 4
Mains In/ Out: .............................................................2 Powercon
Networking/ Communication: .....................................DDO Pro™ Net/RS 485 Ethercon
Woofer: ........................................................................18"
Frequency response - 10 dB: ........................................36 Hz - fx
Frequency response+/- 3 dB: ........................................ 42 Hz - fx
Sensitivity 1W@1m 1): .................................................101 dB
Max. SPL calculated 1): ................................................134 dB 2)
Max. SPL peak 1): .........................................................133 dB
Max. SPL 1): .................................................................130 dB @ 10% THD (50 Hz- 200Hz)
Housing (birch): ..........................................................18 mm (3/4"), 13-ply
Surface coating: ...........................................................Black 2-component PU lacquer
Grille: ...........................................................................Metal grille with black acoustic foam
Handles: ......................................................................6 slot grips routed into the side panels, 1 on the lid
Pole mount: .................................................................M20
Weight: .........................................................................59 kg/ 129.8 lbs.
Dimensions (W x H x D): .............................................51 x 73 x 71 cm, 20" x 28 3/4" x 27 7/8"
Accessories: ................................................................. Protective cover, stack base plate
27
English
1) Measured under half-space conditions 2) Based on peak power handling
Fig. 4: CTA 118 Sub housing dimensions in mm
ConTour Array™ 1.0
C. Rigging ConTour Array™ Enclosures
1. Components and Applications of
ConTour Array™ Rigging Hardware
Please also read the Notes on Rigging Safety in Chapter A of this manual.
Fig. 5: Integrated rigging attachments
Fig. 6: ConTour Array™ rigging frame
Fig. 7: Shackles for attaching motors, chain hoists
ConTour Array™ rigging hardware consists of the
following parts:
• a rigging frame with two shackles for attaching
motors or chain hoists.
• integrated rigging points on the side and back for
flying ConTour Array™ CTA 208 Mid/High units.
• three quick-release pins per CTA 208 for
connecting the enclosure to the rigging frame.
Important note on pins: Quick-release pins connect
rigging hardware and speaker enclosures, and their
proper function must be tested and verified. Pins
must always engage fully in the (fitted) hole. Under
no circumstances may these pins release on their
own when subjected to tractional forces. The nib in
the center of the pinhead must always be depressed
to insert pins; it releases the ball detents in front.
Once the pin engages in the hole, the nib must ease
back to its initial position.
1.1 Mounting the Rigging Frame
It takes two people to perform these tasks. Remove
the quick-release pins from the enclosure. Set the
rigging frame on the enclosure. First attach the two
front connectors. Turn the rigging frame‘s connector
component down and slide it into the rear rigging
connector.
Insert the rear pin through the hole labeled 0°.
Attach to the rigging frame the shackle that accepts
the motor hook. Your choice of pick point depends
on how sharply you aim to curve the array later.
Tip: If you intend to rig additional enclosures, we
recommend that you attach all the required speaker
cords to the rigging frame now because this task
becomes more difficult as the array grows higher.
Be sure to use cords of sufficient length!
1.2 Setting the DualCurve™ Angle
Curve the two CTA 208 cabinets using the rear
connector component. You have two angles to
choose from, 0° and 9°. Remove the pin on the rear,
insert lead the connector into the rigging track and
secure the connector component with the pin as
pictured.
1.3 Rigging Additional
CTA 208 Mid/High Enclosures
Hoist the mounted CTA 208 Mid/High cabinets to a
height that allows you to roll a second case holding
two enclosures under the array. Remove the two
front pins from the enclosure you wish to mount.
Move the second case with two additional CTA 208s
into position. Slowly lower the top two cabinets
until the two front connectors engage. Insert the
two front pins first, ensuring they engage fully and
securely (see Figure 12 a). You may have to shift
the two enclosures slightly to ease the pins into
position. To attach the rear connector component,
you must swivel it out of the track and ensure it
faces down (see Figure 12 b). Insert the pin through
the hole labeled 0° or 9° as required.
Note: Depending on application, you may not be
able to select a pick point with a shackle. In this
case, use two shackles and a suitable O-ring as
shown in Figure 10.
Check all pins on the top rigging frame to ensure
they seat firmly. Attach the motor to the shackle.
Important: Ensure the motor‘s chain bag hangs
freely and does not rest on the rigging frame!
Engage the motor to lift the cabinet from the case.
Roll the case off to the side. Remove the two front
pins from the enclosure you wish to mount and fold
down its connector component. Now you can rig
further cabinets.
Hoist the array consisting of four CTA 208
enclosures high enough to remove it fully from the
case. Secure the hoisted array against blasts of wind
or unintentional twisting to prevent it from moving.
29
English
Fig. 8: Mounting the rigging frame
Fig. 9: Setting an intermediate angle
Fig. 10: Hoisting the mounted CTA 208 enclosure
Fig. 11 a, b, c, d, e: Rigging additional CTA 208 enclosures
ConTour Array™ 1.0
2. Groundstacking
3. Mains and Generator
Power Supply
Fig. 12 a, b: ConTour Array™ ground-stack connectors
Depending on application, use two or three
ConTour Array™ subwoofers as the stack‘s base. Set
the desired number of subwoofers on top of one
another.
Caution:
Secure the ground stack to prevent it from tipping!
Use the M10 bushings on the back of the CTA 118
subwoofer and the ground-stack connectors to do
this.
Mount mid/high units individually, one after
another, on the top CTA 118 Sub. Use the ConTour
Array™ stack plate as the base and connector to
the subwoofer. Attach it to the CTA 118 Sub’s pole
mount using the M20 thumb screw. The stack plate
lets you easily adjust mid/high units without having
to move the subwoofer. On this stack plate, you can
freely select the desired down-tilt between 0° and 9°
in 1.5° increments.
Connect no more than two CTA 118 Subs to one
mains phase (16 A). If you use the Powercon Link
port, connect no more than one further CTA 118
Sub. The 13-A limit on maximum input current (see
label) applies to Great Britain because UK power
cables are approved to 13 A only. 16-A current is
permissible in other countries using EU power
cables.
Caution: If you must power the CTA 118 Sub with a
generator, ensure the generator is running before
you switch the system on. Never switch systems
off and on with the help of the generator! This can
damage the PWM power amps’ switching power
supply!
Note: The Powercon Link is not available for 100120-volt units.
Fig. 13: ConTour Array™ stack plate
Fig. 14 a, b: Attaching the stackplate to the CTA 118 Sub
Fig. 15 a,b,c: CTA 208 Mid/High stack
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