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.

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

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

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!!

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

“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

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

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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