Hughes & Kettner CF 200 User manual

GUITAR- PA STEREO POWER AMPLIFIER
Hughes & Kettner Musical Instruments GmbH Magdeburgerstr.6 6690 St.Wendel
Telefon
( 0 68
51 ) 20 21 Telefax ( 0 68 51 ) 48 86

We are pleased you chose the CF 200 power amplifier. Its innovative CURRENT
FEEDBACK circuitry is the ideal medium for
the modern guitar rack. The CF 200
is equally suitable for PA, monitor, and keyboard applications.
PLEASE READ THE FOLLOWING GUIDELINES PRIOR TO OPERATING THE CF 200:
l The European model’s voltage can be adjusted from 220 V to 240 V.
l To avoid overheating, ensure sufficient air circulation is available both at the
sides and to the rear of the CF 200.
l Do not install any units sensitive to heat, for instance effects processors, directly
above the CF 200.
l Never expose the CF 200 to climatic extremes and ensure the amp is always
protected from moisture.
l To protect your speakers, always switch the CF 200’5 power on last.
l Service and repair work should be left to an authorized repair shop. Before
opening the housing, always ensure the mains power cable is unplugged!
FRONT PANEL CONTROL FEATURES
( 1 ) The VOLUME LEFT and VOLUME RIGHT knobs regulate input sensitivity and
subsequently the power output. In the BRIDGE MODE, only the right control is
activated.
The green -20 db LED ( 2
) indicates the signal level at the respective input is
correctly adjusted. The red CLIP LED
( 3 ) denotes the signal level is too high, and
the CF 200 is clipping. Adjust the appropriate VOLUME knob so that the red LED
illuminates at impulse peaks only.
( 4 ) GUITAR/PA
The GUITAR/PA switch activates the CURRENT FEEDBACK circuitry (GUITAR mode
= on, PA = off). The CURRENT FEEDBACK circuitry elicits an amp, producing the
type of signal most desirable for guitar amplification.
( 5
) MAINS: The MAINS power switch illuminates when engaged.
page 7

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REAR PANEL FEATURES AND FUNCTIONS
( 0 ) Prior to plugging the factory-included EUROMAINS CABLE in the AC receptacle
off the rear panel, adjust the voltage selector to the correct voltage.
( 7 ) Use a screwdriver to remove the FUSE BRACKET. Ensure replacement fuses hear
identical specifications to the originals. The fuse bracket on the European model
doubles as a voltage selector. Read the upright value to determine the correct
voltage setting.
( 8 ) The GROUND LIFT switch severs the ground to the chassis, eliminating
annoying background hum when the power amp is used in conjunction with other
equipment.
( 9 ) SPEAKERS
Connect speakers to these jacks for stereo operation. When using one speaker
cabinet per channel, ensure each speaker has a minimum power rating of 100 watts
and an impedance between 4and 16 ohms. For two speakers per channel, each
cabinet must be rated at 8 ohms or greater.
( 10 ) SPEAKER PROTECT
Two fuses (3.15 A), one for each channel, protect speakers from damage due to
malfunctions e.g. direct current in the output jack. They also protect the power amp
from potential damage, e.g. due to a defective power cable.
Before resuming operation, ensure:
l you replace blown fuses with ones hearing identical ratings.
l both, the connected speakers and speaker cables are fully functional.
l a qualified repairman inspects he CF 200 for possible damage.
( 6/7 )
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page 8

( 11 ) BRIDGE MODE
The MODE switch ( 12 ) determines whether the CF 200 operates in the 2 x 1 OOW
stereo mode, or in the 200W mono mode. To avoid accidental switching between
01‘ modes, a plastic coverplate is screwed in position. Ensure that the upper and
lower screws are never removed simultaneously. When the MODE
switch ( 12 ) is
in the MONO BRIDGE position, the CF 200 operates as a mono 200W amp. Use
the two binding posts to connect speaker cabinets. Ideally, use cables with
terminals or banana plugs. Minimum impedance: 8 ohms.
Black binding post: negative. Red binding post:
plus
The INPUT RIGHT and the VOLUME RIGHT control are activated in the
BRIDGE MODE.
( 13 ) INPUTS
The input jacks are suitable for
preamps or mixers. Both channels automatically
amplify the signal if only the INPUT RIGHT jack is accessed. In the BRIDGE
MODE, only the INPUT RIGHT is
activated.
SIGNAL ROUTING DIAGRAM
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TECHNICAL DATA
Output power per channel: 70W at 8 ohms, 1 OOW at 4 ohms
Input sensitivity: 1 V eff /0 cl bv
l Stereo mode
- 6dBV / 0.63 V eff
l Bridge mode ) dBV/! V eff
Input impedance: 50 kohms
IMPORTANT SAFETY INSTRUCTIONS!
BEFORE CONNECTING, READ INSTRUCTIONS
1.
2.
3
. .
4.
5.
6.
7.
8.
Y.
Read all of these instructions
Save these instructions for later
use
Follow all warnings and instructions marked on the product
Do not use this product near water
Do not place this product on an unstable cart, stand or table. The product may
fall. causing serious damage to the product.
Slots and
openings in the cabinet and the back or bottom arc provided for
\ entilation to ensure reliable operation of the product and to protect it from
overheating these openings must not be blocked or covered. This product should
not be placed in a built-in installation unless proper ventilation is provided.
This product should be operated from the type of power source indicated on the
marking label. If you are not sure of the type of power available consult your
dealer or local power company.
‘I his product is equipped with a
3-wire grounding type plug. a plug having a third
pin. This plug will only tit into a grounding-type power outlet. This is a safety
feature. If you are
unable to insert the plug into the outlet, contact your electrician
to replace your obsolete outlet. Do not defeat the purpose of the
grounding type plug.
Do not allow anything to rest on the power cord. Do not locate this product
w here persons will walk on the cord.

10. If an extension cord is used with this product make sure that it is a 3-wire
grounding- type and that the total of the amp ere ratings on the products plugged
into the extension cord do
not exceed the extension cord ampere rating. Also
make sure that the total of all products plugged into the wall outlet does not
exceed I.5 amperes.
Il. Never push objects of any kind into this product through cabinet slots as may
touch dangerous voltage points or short out parts that could result in risk of fire
or electric shock. Never spill liquid of any kind on the product.
12. Do not attempt to service this product yourself, as opening or removing covers
may expose you to dangerous
voltage points or other risks. Refer all servicing
to service personnel.
13. Unplug thia product Ii-om the wall outlet and refer servicing to qualilied service
personnel under the following conditions:
l When the power cord or plug is damaged or frayed
l If liquid has been spilled into the product
l If the product has been exposed to rain or water
l If the product does not operate normally when the operating
instructions are followed. Adjust only these controls that are covered by
the operating instructions since improper adjustment of other controls
may result in damage and wilt often require extensive work by a
qualified technician to restore the product to normal operation.
l If the product has been dropped or the cabinet has been damaged
l If the product exhibits a distinct change in performance, indicating
a need of service!Selection of power supply cord
Use only a listed detachable power supply cord type SVT or SJT
minimum 18 AWG. 3 conductor, one end configured for NEMA 5-l 5
other end for IEC 320/CEE
22!
14:
Fuses: For continued protection against risk of fire, replace fuses only
with same type and ratings
TO PREVENT THE RISK OF FIRE AND SHOCK HAZARD, DO NOT EXPOSE THIS
APPLIANCE TO MOISTURE OR RAIN. DO NOT OPEN CASE; NO USER SERVICEABLE
PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
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