Cary Audio Design SLP-98 Manuale utente
SLP-98
OPERATING MANUAL
NOTE:
Before installing your new SLP-98, please read this manual carefully as it will
inform you of the SLP-98’s specifications, proper installation and operation
procedures. Also included in this manual are guidelines on how to properly
service and care for your new SLP-98.
2
SPECIFICATIONS
When the following cautionary terms are used in this manual, these definitions apply:
WARNING: Electrical hazard! Misuse or failure to follow instructions properly may
result in personal injury or death!
CAUTION: No risk or personal injury; however, misuse or failure to follow
instructions may result in damage to equipment.
NOTE: No risk of personal injury or equipment damage; however, misuse or
failure to follow instructions may prevent proper performance of the
equipment.
1.2 Specifications
This section describes the basic specifications of the SLP-98 at the time of printing. Specifications
are subject to change without notice or obligation.
DIMENSIONS: 12-1/2 W x 5” H x 12” D
WEIGHT: 22 lbs.
CIRCUIT: Class A Triode
INPUT IMPEDANCE:47,000 ohms phono section with user option on lower resistance
OUTPUT IMPEDANCE: 800 ohms
GAIN: 1.2 millivolt input = 1 volt output phono stage = 43dB
110 millivolt input = 1 volt output line stage = 20dB
RIAA CURVE: 1,000Hz = 0dB
20Hz = +20dB
20,000Hz = 20.5dB
SIGNAL/NOISE RATIO: -88dB
RESISTORS: 1% metal film
CAPACITORS: Polystyrene and polypropylene
POWER TRANSFORMER: 200% duty cycle on all transformers enclosed in separate power
pack
TUBES: 8 total premium tubes
2-6SN7 buffer cathode followers
3
2-6SN7 line stage
2-12AX7 (ECC83) phono section
2-12AU7 (ECC82) phono section output buffer
POWER SUPPLY: Full wave rectification, center-tapped, pi-network featuring a filter
choke.
AC POWER
REQUIREMENTS: 100-130 volts AC / 50-60Hz at 50 watts
200-245 volts AC / 50-60Hz at 50 watts
WIRE: EE Teflon Silver
WARM-UP TIME: 5 minutes
INPUT AND
OUTPUT JACKS: Gold plated with Teflon® insert
DUTY CYCLE: Continuous duty all modes 24 hours per day
1.3
Front Panel Features
POWER SWITCH: Rotary 3 position: off, stand-by, operate
SELECTOR: 5 Position rotary switch controlling input selection.
LEFT BLUE LED: Indicates AC power “ON”
OPERATE MUTE: Mutes output of preamplifier
TAPE MONITOR: By-passes all inputs to activate incoming tape recorder signals
RIGHT BLUE LED: Indicates SLP-98 in tape monitor function
LISTENING LEVEL: Master dual volume control equally controlling input signal to line
section preamplifier
INPUT LEVEL LEFT: Individual control of left channel level feeding to master listening
level volume control
INPUT LEVEL RIGHT: Individual control of right channel level feeding to master listening
level volume control
1.4
Rear Apron Features
PHONO: These jacks are to be used with moving magnet or high output
moving coil cartridges with a recommended minimum output
of 1.4
millivolts
4
AUX.-CD-TUNER-TAPE:These are line level inputs requiring flat frequency response
GND: Ground lug for turntable chassis
MONITOR: For use with tape recorders that employ a third head to monitor a
tape as it is being recorded (may be used as a flat frequency
response line input)
TAPE OUT: Constant output of selected input signal for recording independent
of volume control setting on SLP-98
DUAL OUTPUTS: 1-Connect directly to input of power amps
AC: Multi-conductor power cord to be plugged into SLP-98 external
power pack
INSTALLATION AND UNPACKING
This section describes the unpacking and installation procedures for the SLP-98 preamplifier.
2.1 Unpacking
All shipping containers have been specially designed to protect their contents and special care has
been taken to prevent damage under normal shipping conditions. Mishandling should be evident
upon inspection of the shipping container. If damage is found after visual inspection, take care not
to destroy the evidence. If necessary, document the damage with photographs and contact the
transport carrier immediately.
CAUTION
Never remove/insert AC line cord when the unit is ”ON”
WARNING
Make no attempt to put the preamp in service
outside of the cabinet.
Contact with voltage in the SLP-98 can be fatal!!
5
Carefully remove your new SLP-98 from its packing carton and examine it closely for signs of
shipping damage. It is recommended to save all original packing cartons to protect your preamplifier
from damage should you wish to store it or ship it for after-sales service.
2.2 Warranty Card
If you were the original purchaser of this unit and you purchased it in the United States, you should
fill out the enclosed warranty registration card and return it to Cary Audio Design within 10 days of
your purchase. Cary Audio Design also suggests that you keep your original packing cartons in case
you need to ship the unit. Warranty restrictions apply. Consult the warranty section of this manual
for details. Failure to return warranty card within 10 days will limit warranty to one year.
2.3 SLP-98 Placement
The SLP-98 is designed for use inside homes. It must be protected from the elements and
temperature extremes. For example, avoid placing the unit in extremely hot locations such as near
radiators or other heating units. Its location among the user’s audio components is not critical;
however, certain precautions must be taken.
2.4 Power Requirements
The SLP-98 is designed to operate from house current mains. The design voltage is 117 VAC at
50/60Hz (Foreign units 234 VAC at 50/60Hz).
2.5 Cables
The interconnect cables from the output jacks of the SLP-98 to the input jacks on the basic
amplifiers can be any convenient length your set-up requires. The choice of a high quality
interconnect cable is important. Most audio dealers will have proper speaker cable in stock for this
purpose.
OPERATION
Your new SLP-98 is ready for operation after all the tubes and interconnect cables have been
installed. The SLP-98 is provided with functional, useful front panel controls with a logical layout.
The listening level is conveniently located in the center. Connect the SLP-98 to the power pack
with the gray cable. Plug AC mains into the power pack and flip the power switch up. The output of
the SLP-98 is inverting. Connect your speaker wire out of phase ((+) to (-) and (-) to (+)) on both
channels.
3.1 Power Switch
The power switch located at the far left on the SLP-98 front panel functions in the following
manner:
“Off” Removes all AC voltages from the SLP-98 preamp deck
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“Stand-By” Provides DC voltage through individual regulators to flow to the
filaments of the preamplifier stage. (The SLP-98 may be left in the
stand-by position at all times to keep the SLP-98 in a warmed-up,
ready- to operate mode without B+ potential. Operating in this
fashion gives peak performance after only a few minutes of
operating time.)
“Operate” Brings up full potential DC voltage within one minute.
3.2 Selector Switch
The 5-position rotary switch connects a choice of input program source, both channels
simultaneously with proper amplification (or in the case of phono) RIAA equalization for phono
input. All program sources are selected by this switch.
3.3 Operate Mode
To listen to music the operate switch must be in the "UP" position when "DOWN" the output is
mute.
3.4 Monitor Tape
In the “Up” position, the rear monitor jack serves as the input source. This function is very useful
with tape decks utilizing a third head to monitor the recording directly from the tape. In the “Up”
position, the blue LED indicator light will appear.
3.5 Listening Level
The gain of both left and right channels is controlled simultaneously by this control. The control
potentiometer is of such high quality that the tracking error is less than 0.5dB from 0 to -60dB. The
program source remains in balance over the entire range of this control. The taper rate of the
volume control has been chosen to provide a slow increase in gain over the first half of rotation and
a more rapid gain increase above 12:00.
3.6 Input Level - Right and Left
The two potentiometers control independently the input level to each channel of the SLP-98. The
input level controls on a SLP-98 take the place of an individual dual balance control used on many
preamplifiers. Also, these controls may be used to reduce the overall gain of each channel on the
SLP-98.
CARE AND SERVICE
The stainless steel nickel-chrome plated chassis on the SLP-98 may be cleaned with a household
window cleaner and a paper towel. If the SLP-98 has been operated in an extremely dusty or humid
environment, automobile chrome polish may also be used to bring up the original luster of the
chrome finish. The black front face plate may be restored to factory fresh condition by spraying and
buffing utilizing with Armorall®. The tube may be cleaned with window cleaner. The frequency of
cleaning will be governed by how many hours the SLP-98 is operated and by the operating
environment.
4.1 Tube Replacement
If it becomes necessary to replace the tubes in the preamp the same brand should be used. A new tube
kit is available from Cary Audio Design. Although tube life varies depending on the nature and degree
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of use, under normal operating condition for home use, the tubes in the SLP-98 should last several
years and may last much longer.
4.2 Factory Service
Careful consideration has been given to the design of your SLP-98 to keep maintenance problems to
a minimum; however, it is possible that some problems may arise which cannot be cured by tube
substitution. At this point, we suggest that you contact our Customer Service Department at phone
number (919) 481-4494 to describe your problem in detail. Do not return the SLP-98 to the
factory without a Return Authorization Number from the Customer Service Department.
Cary Audio Design will assume no responsibility if the transportation company refuses to pay damage
claim due to your improper packing or lack of insurance should the unit be lost in shipment.
Non-Warranty Repairs
Cary Audio Design will provide repair service for its products charging on a time and expense basis
for the repairs.
WARNINGS
Make no attempt to put the SLP-98 in service outside of the cabinet -
Contact with high voltages found in the unit can be fatal!!!
Completely remove AC power plug from the wall and allow 30 minutes
for the high voltage capacitors to discharge through bleeder resistors
before attempting to change tubes or clean the
inside to the preamplifier.
CAUTIONS
Never remove/insert AC plug when the unit is on or the
AC power switch is in the “ON” position
Obstruction of the top portion of the SLP-98 will result
in tubes overheating
8
PROPRIETARY RIGHTS: Cary Audio Design has proprietary right in the design and components
of its units. While the purchaser is entitled to use the unit for its intended purpose, use of the unit
for its intended purpose, use of the unit for copying, imitation, or reverse engineering is a violation
of these proprietary rights and is forbidden.
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