Clef Audio Conductor-LP User manual
Conductor-LP
OWNER MANUAL
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO
NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
The lightning flash with arrowhead symbol, within an equilateral
triangle, is intended to alert the user to the presence of uninsulated
“dangerous voltage” within the product’s enclosure that may be of
sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to
alert the user to the presence of important operating and
maintenance (servicing) instructions in the literature accompanying
the appliance.
CAUTION: Changes or modifications not expressly approved by the
party responsible for compliance could void the user's authority to
operate the equipment.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT
REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED PERSONNEL.
2
Please read all instructions and precautions carefully and
completely before operating your Soloist-50.
1. disconnect your entire system from the AC mainsALWAYS
before connecting or disconnecting any cables, or when
cleaning any component.
2. This product must be terminated with a three-conductor AC
mains power cord that includes an earth ground connection.
To prevent shock hazard, all three connections must ALWAYS
be used.
3. AC extension cords are not recommended for use with this
product
4. use flammable or combustible chemicals for cleaningNEVER
components.
5. operate this product with any covers removed.NEVER
6. wet the inside of this product with any liquid.NEVER
7. pour or spill liquids directly onto this unit.NEVER
8. block airflow through ventilation slots or heat sinks.NEVER
9. bypass any fuse.NEVER
10. replace any fuse with a value or type other than thoseNEVER
specified.
11. attempt to repair this product. If a problem occurs,NEVER
contact your Clef-Audio retailer.
12. expose this product to extremely high or lowNEVER
temperatures.
13. operate this product in an explosive atmosphere.NEVER
14. keep electrical equipment out of the reach ofALWAYS
children.
15. unplug sensitive electronic equipment duringALWAYS
lightning storms.
Important Safety Instructions
3
4
From all of us at Clef Audio,
Thank you for choosing our product.
Unpacking ...............................................................................................................6
Installation Considerations ...............................................................................7
Power Requirements ...........................................................................................8
Special Design Features .....................................................................................9
Acknowledge .......................................................................................................10
Front Panel ...........................................................................................................11
Rear Panel .............................................................................................................12
Power Supply Unit .............................................................................................13
Care & Maintenance ..........................................................................................14
Warranty.................................................................................................................15
Specifications .......................................................................................................16
Dimensions ...........................................................................................................17
Table of Contents
5
6
DO NOT attempt to lift or move the Conductor-LP without
adequate assistance. Failure to follow the procedures included
in this section may result in personal injuries and/or product
damage.
DO NOT attempt to lift the Conductor-LP while bending at the
waist. When lifting, stand as straight as possible using the leg
muscles to lift.
When unpacking the Conductor-LP:
DO save all packing materials for possible future shipping needs.
DO inspect the Conductor-LP for signs of damage during shipment.
If damage is discovered, contact an authorized Clef Audio dealer for
assistance making appropriate claims.
Unpacking
Caution!
Warning!
Position the Conductor-LP on a stable, horizontal surface where
there is no risk of it being knocked, or subjected to vibration such as
from loudspeakers.
Conductor-LP must be protected from humidity - if the unit is
moved from a cold place to a warm room, leave the unit for an hour
or so to allow sufficient time for the moisture to evaporate.
Installation Considerations
Placement
7
8
When shipped, the Conductor-LP is configured for 220-230V AC
power operation at 50Hz. Before operating the Conductor-LP make
sure the AC mains connector label indicates the correct operating
voltage for the current location.
The Conductor-LP should be unplugged during lightning storms
and extended periods of non-use. Otherwise, it is designed for
continuous operation. For best performance, make sure power is
connected to the AC mains connector at all times. During normal
operation, do not use the power switch (on the rear panel) to power
off the Conductor-LP. Instead, use the on/off button to place the
Conductor-LP into standby.
Power Requirements
Continuous Operation
Operating States
The Conductor-LP has a very accurate RIAA equalization curve. This
curve is accurate to better than 1/10 dB over 10 octaves.
The accuracy of this curve does not vary with an adjustment change
of gain or cartridge loading.
Conductor-LP features gain adjustable from between 40dB and
76dB; a range sufficient to allow successful operation of not only
high output moving magnet cartridges, but also the lowest output
moving coil cartridges without the use of an auxiliary step-up
transformer.
Dual mono design topology. This gives the better isolation between
channels. Soundstage imaging is improved, offering true
soundstage width and depth. Instrument placement and layering
are more accurate.
Special Design Features
Low Noise
High Gain Design Circuit
Dual-Mono Design
9
10
Acknowledge
Moving Magnet cartridge need to select capacitance. It will be
impossible to give suggestions for correct capacitance with any
given cartridge, due to the huge variation in capacitance on the
cables. The optimal value is selected by listening.
There are five Capacitive loading switches with values of 100pf,
220pf, 330pf, 430pf and 550pf.
The correct value is that which gives the best overall tonal balance.
Typically if the cartridge sounds too bright more capacitive loading
will be required. The typical Moving Magnet cartridge has a fairly
predictable output.
The Conductor-LP gain in moving magnet is fixed at 42dB and
Resistive loading is fixed at 47k-ohm
Moving coil cartridges are the typical cartridges of choice for the
serious Audiophile and generally the lower output moving coil
cartridges are preferred. The Conductor-LP may be used with even
lower output cartridges without an auxiliary step-up transformer.
To operate the Moving Coil pre-amp, you need to select Moving
Coil (MC) "On". In addition you will need to attach the turntables
phono cartridge to the Conductor-LP Moving Coil input.
Your next task is going to be to set gain and Resistive Loading.
The available gain settings are 52 dB, 62 dB, & 72 dB.
There are five Resistive loading switches with values of 33ohm
100ohm, 470ohm, 1k-ohm and 47k-ohm.
Moving Magnet
Cartridge (MM)
Moving Coil
Cartridge (MC)
11
The numbers in the front panel illustration shown above
correspond with the numbered items that begin below.
1. On/Stand by Button
When the Conductor-LP is powered on, pressing and releasing
the On/Off button places the Conductor-LP standby or takes
the Conductor-LP out of standby
2. Source Select Button
Press to select desired input cartridge sources, Moving Magnet
(MM) cartridge or Moving Coil (MC) cartridge.
3. Source Select Display
Shows selected source.
4. Resistant Load Select Button
There are 5 unique Resistant loading settings available press this
button to select desired MM cartridge Resistant Loading
5. Resistant Load Select Display
Shows Resistant Loading selected.
6. Capacitance Load Select Button
There are 5 unique Capacitance loading settings available press
this button to select desired MM cartridge Resistant Loading
7. Capacitance Load Select Display
Shows Capacitance Loading selected.
8. Output Gain Select Button (MC)
Press to select desired MC cartridge output gain.
9. Output Gain Select Display
Shows MC cartridge gain selected.
When ,Source Button
Resistant Load
Button Capacitance,
Load Button or
Output Gain Button
selected, The unit will
be in mute stage.
Please wait for a while
until the unit is ready.
Front Panel
57 9
46
28
3
1
Clef-Audio
R-load C-load
Gain
Input
52
62
72
100
220
330
430
550
33
100
470
1000
47000
MC
MM
Conductor-LP
Note
The numbers in the rear panel illustration shown above correspond
with the numbered items that begin below.
1. MM cartridge Input
Plug the MM cartridge source into this input.
2. MC cartridge Input
Plug the MC cartridge source into this input.
3. Unbalanced Output
Connect the interconnects cables from these terminals to
Preamplifer or Amplifier.
4. Balanced Output
Connect the Balanced interconnects cables from these
terminals to Preamplifer or Amplifier.
5. Ground Terminal
Connect to the Turntable Ground Wire to reduce hum.
6. DB-15 DC Power Input
Connect DB -15 power cable provided to Power Supply Unit.
Rear Panel
12
11522
446
3
33
3
GROUND
DC POWER INPUT
Conductor-LP
Phono
Preamplifier
RIGHT
CHANNEL INPUT
BALANCED
MC
MM
UNBAL
RIGHT
CHANNEL
OUTPUT
LEFT
CHANNEL INPUT
BALANCED
MC
MM
UNBAL
LEFT
CHANNEL
OUTPUT
Design and Manufactured by
CLEF-AUDIO COMPANY LIMITED
Bangkok THAILAND www.clef-audio.com
The numbers in the illustration shown above correspond
with the numbered items that begin below.
1. LED Indicator
Show AC power input status.
2. On/Off Switch
Switch to turn the unit power On or Off.
3. AC Power Input Socket
Connect AC cables from 220V outlet.
4. DB-15 DC Power Output
Connect DB -15 power cable provided to main unit.
Power Supply Unit
13
Conductor-LP
DC POWER OUTPUT
Conductor-LP
Phono
Preamplifier
Supply
AC IN 220V 50Hz
POWER ON/OFF
Design and Manufactured by
CLEF-AUDIO COMPANY LIMITED
Bangkok THAILAND www.clef-audio.com
12
3
4
14
The Conductor-LP requires routine care and maintenance to ensure
optimal performance. The bulleted items included in this section
indicate maintenance procedures that should be performed on a
regular basis.
Failure to perform the maintenance procedures included in this
section may void the manufacturer’s warranty and/or standard
repair policies.
• Use a feather duster or a low-pressure blower to remove dust
from the Conductor-LP exterior surface.
• Use a soft, lint-free cloth to remove dirt and fingerprints from
the Conductor-LP exterior surface. Do not use a cloth made
with steel wool or metal polish. If needed, this cloth can be
dampened with isopropyl alcohol. Do not dampen the cloth
with Benzene, acetone-based cleaners, and other commercial
cleaners.
Do not apply liquid directly to the Conductor-LP exterior
surface. Doing so may damage electrical components.
• Refer to “Installation Considerations” for information about
preventative maintenance.
Care & Maintenance
Caution!
Note
15
Clef Audio warrants to the first end-user purchaser that Conductor-
LP (Phono Stage Preamplifier) when purchased from an authorized
Clef Dealer/Distributor, will be free from defective workmanship
and materials for the period stated below. Clef will at its option and
expense during the warranty period, either repair the defect or
replace the product with a new or remanufactured product or a
reasonable equivalent.
Two (2) years from the date on the original sales receipt or invoice
or other satisfactory proof of purchase.
The warranty described above is non-transferable, applies
only to the initial installation of the product, does not include
installation of any repaired or replaced product, does not include
damage to allied or associated equipment which may result for any
reason from use with this product, and does not include labor
or parts caused by accident, disaster, negligence, improper
installation, misuse (e.g. overdriving the amplifier or speaker,
excessive heat or cold or humidity, outdoor installation), or from
service or repair which has not been authorized by Clef Audio.
Limited two (2) years Warranty
Warranty Period
for this Product
Additional limitations
from warranty coverage
Specifications
16
Gain
RIAA Response
Distortion
Maximum Output
Output Impedance
Input Impedance
Unwieghted Noise
Power Consumption
Number of Chassis
Dimensions (w x h x d)
Weight
40 dB @ 1 KHz (MM)
52 dB @ 1 KHz (MC)
62 dB @ 1 KHz (MC)
72 dB @ 1 KHz (MC)
+0.1 dB 20-20 KHz
< .05 % THD @ 20 volts balanced @ 1 KHz
20 volts rms.
150/150 ohms
47 Kohm 0-550 pF (MM)
33 ohm - 47 Kohm (MC)
-90 dB ref. 10 mV input (MM)
-81 dB ref. 1 mV input (MC)
32 Watts
2
Main Unit: 432 x 100 x 320 mm.
Supply Unit: 163 x 79 x 233 mm.
Main Unit: 6.5 Kg, 8 Kg in shipping carton
Supply Unit: 3 Kg, 3.3 Kg in shipping carton
Preliminary specifications - subject to change without notice.
Dimension, Conductor-LP
432 mm
85 mm
100 mm
320 mm
17
Clef-Audio
R-load C-load
Gain
Input
52
62
72
100
220
330
430
550
33
100
470
1000
47000
MC
MM
Conductor-LP
GROUND
DC POWER INPUT
Conductor-LP
Phono
Preamplifier
RIGHT
CHANNEL INPUT
BALANCED
MC
MM
UNBAL
RIGHT
CHANNEL
OUTPUT
LEFT
CHANNEL INPUT
BALANCED
MC
MM
UNBAL
LEFT
CHANNEL
OUTPUT
Design and Manufactured by
CLEF-AUDIO COMPANY LIMITED
Bangkok THAILAND www.clef-audio.com
Clef Audio Company Limited
33/83 Soi Narknivas Narknivas Rd. Ladprao Bangkok 10230 THAILAND
Telephone: (662)-932-5981, (662)2-932-5982 Fax: (662)-932-5982
Table of contents
Other Clef Audio Amplifier manuals
