HK hk1805 schematic

Service Documents

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Do not disclose this information to or share these documents

with third parties.

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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

118 SUB

2006/10/25

Directory

features page: 3-13

drawing-numbers-example page: 14

standard for single wire confection page: 15

HK1805-CTA-Subwoofer page: 16

exploded drawings: complete Rev.: 1B page: 17-18

front grille Rev.: 1B page: 19
chassis/ cabling Rev.: 1D page: 20-23
display Rev.: 1A page: 24
mainboard Rev.: 1C page: 25
PWM-modul Rev.: page: 26
dolly Rev.: 1A page: 27
stacking plate Rev.: 1A page: 28-29

spare parts list Rev.: 1A page: 30-32

circuit diagrams preamp Rev.: 1C page: 33-35

inputboard Rev.: 1B page: 36
powerfilter 230V Rev.: 1A page: 37
powerfilter 100-120V Rev.: 1A page: 38

layout diagrams mainboard Rev.: 1C page: 39

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

D. The ConTour Array™ DDO-Pro™ Controller

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 

1. The DDO-Pro™ Net Port

31

Net Ports link several CTA 118 Subs in a
communication network. Use CAT 5 network cables
or professional Ethercon cables with a metal plug
to do this. Connect the first CTA 118 Sub’s output to
the next unit’s input, and so forth.

Note: This is purely a data interface. The DDO-Pro™
Net Port does not send audio signals.

If you wish to adjust controller settings (for example,
filter, gain or delay), you can do this on any CTA 118
Sub’s control panel. Automatically, the unit becomes
the master controller and sends parameter changes
to all networked CTA 118 Subs (up to 32 units).
Note: It does not send "Utilities" menu settings.

Caution: If you wish to use another CTA 118 Sub
and a ConTour Series™ cabinet (CT 108, CT 112, CT

115) for near-fill or in-fill applications alongside CTA
208 speakers in a larger rig, DO NOT network it!
Otherwise the connected CT 108, CT 112 or CT 115 will
adopt the settings entered for the mid/high array.

2. Audio Signal Routing

3.1 Level

You can adjust input levels from -96 dB to + 6dB in

0.5 dB steps. Use the Up or Down keys to select the
gain setting and confirm your selection with Enter.

Note: The Level parameter adjusts the level after the
analog-to-digital converter to balance out varying
(system) levels. Level does not influence the input
signal’s volume in front of the analog-to-digital
converter. If the display reads “Digital Clip ?! Check
Input !” be sure to reduce the level at the mixing
console. In this case, the signal is saturating the
analog-to-digital converter, distorting the signal’s
rectangular waveform to create square waves. This
sounds extremely annoying and will eventually
destroy the power amp and speakers.

Tip: If you wish to reduce the volume of the lower
mid/high unit in the array – say, because it hangs
low and listeners are close to this unit – you can
use Level to do this. However, Level also affects the
subwoofer’s volume. Increase Sub Level by the same
value to compensate for the difference.

3.2 Key Lock

English

Fig. 16: DDO-Pro™ network

Use an XLR cord to connect the signal source to
the first CTA 118 Sub’s signal input. If you wish to
connect further CTA 118 Subs to the source, do this
using the Signal Through ports. The XLR port’s pin
assignments are: pin 1 = ground, 2=+, 3=-.
Be sure to read section 3.1 covering maximum input
signal level and digital clip error and heed these
guidelines.

3. Handling the
DDO-Pro™ Controller

Four keys operate the device - Menu, Enter, Up and Down.
Menu/ Esc:
This key accesses the controller’s menu structure
and exits a menu level.
Enter:
This key confirm changes and access menu levels.
Up and Down:
These keys navigate within a menu level and
increase and decrease displayed values. Please refer
to the menu structure quick guide at the end of the
chapter to learn more.

3.3 Utilities

Sync Remote

When you confirm the Sync Remote command, the
unit sends the current settings to all networked
controllers. The control panel currently in use is the
master. This feature comes in handy if the network
connection fails.

Noise Reduction

You can activate Noise Reduction on demand. It
mutes signal paths when the rig is off-line. The unit
ships with this feature deactivated.

LCD Contrast

Adjust the display’s contrast to taste using the Up or
Down keys. Confirm your selection with Enter.

Factory Reset

When you confirm this function, ALL settings reset
to their factory defaults. For example, you could use
it to set all delays to 0 ms and levels to 0 dB.

Fig. 17: DDO-Pro™ Controller panel

The AD converter’s Digital Clip indicator

ConTour Array™ 1.0

2 x CT108 1 x CT112

Delay Base

Select the preferred delay display reading - meters
(m), feet (ft) or milliseconds (ms). Select the
option with the Up or Down keys and confirm your
selection with Enter.

3.4 Sub Delay

Sub Delay is a time alignment tool, that is, it
compensates differences in mid/high units’ and
subwoofers’ response times. Like Sub Level, Sub
Delay controls subwoofers’ and mid/high units’
relative delay.
For example, if you place subwoofers well in front
of mid/high units, you must delay the subwoofers
accordingly. Do this by adjusting a positive
delay value in the Sub Delay menu. If you place
subwoofers well behind mid/high units, you must
enter negative values to compensate.

Caution: Negative Sub Delay values delay the signal
path from the subwoofer to the mid/high unit,
causing overall system latency! Experience has
shown that this method compensates differences of
15 ms or 5 m without latency problems. The control
range sweeps from -30 ms to 29.6 ms.

3.6 Sub Level

You can adjust the balance of volumes between the
subwoofer and mid/high unit from -12 dB to + 6dB
in 0.5 dB steps. Use the Up or Down keys to select
the Sub Level and confirm your selection with Enter.

3.7 System Setup

A special filter preset is available for each
configuration (see fig. 19 a-f). Be sure to assign
the same preset to each DDO-PRO™ controller for
every configuration (1 to 4 CTA 208s). Use the Up
or Down keys to select the right preset and confirm
your selection with Enter.

1 x CT115 1 x CTA208

4 x CTA208

Fig. 18 a, b, c, d, e, f: System Setups

3.5 Delay

Delay controls the overall delay of a system
comprised of subwoofers and mid/high units. The
highest setting is 72.6 ms.

3.8 Quick Guide to the V1.01 Controller’s Menu Structure

33

English

Fig. 19: Menu structure of the DDO-PRO™ Controller

English