Oldfield Amplifiers Club D'Lux Classic 6420C User manual

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Oldfield Amplifiers
User Guide
Club D’Lux Classic - 6420C

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Thank You
Welcome to the Oldfield family and thank you for putting your trust in
Oldfield Amplifiers. We value that trust as much as we feel confident
you will enjoy your new Oldfield amplifier.
Your new Oldfield amplifier is built to provide you with the best tonal
experience and durability available in a guitar amplifier. As with all
Oldfield’s, it is hand built with you, the player, as the central focus of
our efforts. By using the highest grade components, point-to- point
vacuum tube circuitry and fine craftsmanship, your amplifier will
inspire many hours of musical satisfaction and lasting enjoyment.
Thanks,
The Oldfield Team

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Table Of Contents
Important Safety Instructions.............................................................4~5
Overview................................................................................................6
Front Panel Controls And Features.......................................................7
Rear Panel Controls And Features………………………………….……8
Tube Layout…………………………………….……………………………9
Warranty…………………………………………………………..….…….10

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Important Safety Instructions
ΔFor your safety read, retain, and follow all instructions. Heed all warnings.
ΔOnly connect the power supply cord to an earth-grounded AC receptacle. This amplifier is designed to
operate on standard North American 115V AC and should only be plugged in to a receptacle meeting
those specifications.
ΔWARNING: To prevent damage, fire or shock hazard, do not expose this unit to rain or moisture.
ΔUnplug the power supply cord before cleaning the unit exterior (use a damp cloth only). Wait until the
unit is completely dry before reconnecting it to power.
ΔMaintain at least 6 inches (15.25 cm) of unobstructed air space behind the unit to allow for proper
ventilation and cooling of the unit.
ΔThis product should be located away from heat sources such as radiators, heat registers, or other
products that produce heat.
ΔThis product may be equipped with a polarized plug (one blade wider than the other) or a three-prong
grounded plug. This is a safety feature. If you are unable to insert the plug into the outlet, contact an
electrician to replace your obsolete outlet. Do not defeat the safety purpose of this plug.
ΔProtect the power supply cord from being pinched or abraded.
ΔThis product should only be used with a cart or stand that is recommended by the manufacturer.
ΔThe power supply cord of this product should be unplugged from the outlet when left unused for a long
period of time, or during electrical storms.
ΔThis product should be serviced by qualified service personnel when: the power supply cord or the plug
has been damaged; or objects have fallen, or liquid has been spilled onto the product; or the product has
been exposed to rain; or the product does not appear to operate normally or exhibits a marked change
in performance; or the product has been dropped, or the enclosure damaged.
ΔDo not drip or splash liquids, nor place liquid filled containers on the unit.
ΔCAUTION: No user serviceable parts inside, refer servicing to qualified personnel only. Do not expose
the circuit of the amplifier under any circumstances.

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ΔCAUTION: By nature vacuum tubes get very hot during operation. Do not touch vacuum tubes until
they have sufficiently cooled.
ΔOldfield amplifiers are capable of producing very high sound pressure levels which may cause
temporary or permanent hearing damage. Use care when setting and adjusting volume levels during
use.
ΔFailure to comply with any of these safety precautions could result in damage to the amplifier and in
worst cases bodily harm. Non-compliance with any safety precaution may void any stated warranties.

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Overview
Congratulations on your purchase of a new Oldfield Club D'Lux Classic amplifier. The Club D'Lux
Classic is capable of producing a vast array of tones that are familiar and reminiscent of classic mid
1960’s American guitar tones. The Club D'Lux Classic is well suited for just about any style of music
and playing situation where a low-mid wattage amplifier is needed.
This amplifier is all tube and hand-wired using the best quality components available for guitar
amplification. It is built to last a lifetime and give the owner countless hours of enjoyment whether
on stage, in the studio, or in the home.
The Club D'Lux Classic incorporates two channels. The normal channel does not include reverb
while the vibrato channel does. Both channels have the tremolo effect.
Feature summary:
Two channels
22 watts output power into 8Ω
All tube, hand-wired circuitry
(2) 6V6 power section
(3) 12AX7 preamp section
Bias modulated tremolo
Tube Spring Reverb
5AR4 Tube Rectifier
Finger–jointed Cabinet

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Front Panel: Controls And Features
(Reference the front panel viewing left to right)
1. Normal Channel Input: Connect your
instrument with a proper instrument cable to
either input 1 or input 2 of the Normal Channel.
Input 2 is designed to give the player an input
that is 3db less gain than input 1.
2. Normal Channel Volume: Rotating the
control clockwise will increase the amount of gain
and harmonic content of the Normal Channel.
3. Normal Channel Treble: Rotating the control
clockwise will increase the amount of high end
frequency output of Normal Channel. As the treble
control is increased the player will also notice
some reduction in bass response and can be
useful in tightening up the bass.
4. Normal Channel Bass: Rotating the control
clockwise will increase the amount of low end
frequency output of Normal Channel. Midrange
frequencies on this type of tone stack are preset
and are mixed with bass frequencies before being
sent to the treble control to be mixed with treble
frequencies. As the volume of the Normal
Channel gets turned up, the player should begin
to roll off the bass control to keep latter parts of
the circuit from being “swamped” and creating a
“farty” sound.
5. Vibrato Channel Input: Connect your
instrument with a proper instrument cable to
either input 1 or input 2 of the Vibrato Channel.
Input 2 is designed to give the player an input
that is 3db less gain than input 1.
6. Vibrato Channel Volume: Rotating the
control clockwise will increase the amount of gain
and harmonic content of the Vibrato Channel.
7. Vibrato Channel Treble: Rotating the control
clockwise will increase the amount of high end
frequency output of Normal Channel. As the treble
control is increased the player will also notice
some reduction in bass response and can be
useful in tightening up the bass.
8. Vibrato Channel Bass: Rotating the control
clockwise will increase the amount of low end
frequency output of Normal Channel. Midrange
frequencies on this type of tone stack are preset
and are mixed with bass frequencies before being
sent to the treble control to be mixed with treble
frequencies. As the volume of the Vibrato
Channel gets turned up, the player should begin
to roll off the bass control to keep latter parts of
the circuit from being “swamped” and creating a
“farty” sound.
9. Reverb Mix: Rotating the control clockwise will
increase the amount of reverb signal that is mixed
into the dry signal. This type of circuit internally
sets the reverb dwell to maximum so this control
will respond to the smallest amounts of rotation.
10. Tremolo Speed: Rotating the control
clockwise will increase the speed of the tremolo
effect.
11. Tremolo Intensity: Rotating the control
clockwise will increase the depth of the tremolo
effect. Please keep in bind this type of tremolo
works by varying the bias of the power tubes. It
is not unusual to hear a faint “whooshing” noise in
the background when this control is set very high.
12. Indicator Light: On when mains power
switch is in the on position.
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Rear Panel: Controls And Features
(Reference the front panel viewing left to right)
1. Ground: Not used
2. Fuse: Replace only with a 3A slo-blo
fuse. Never install a larger fuse than specified.
Failure to install the properly rated fuse could
result in damage to the amplifier. Fuses provide a
critical safeguard for the amplifier and a blown
fuse could be an indication of a much bigger
problem either with the amplifier or the power
source. See a service technician if the amplifier is
repeatedly blowing fuses.
3. Mains On: Move to the up position to apply
electrical power to the amplifier.
4. Standby: Move to the up position to play the
amplifier. In the down position the amplifier is
still powered on but no sound will be produced.
5/6. Main And External Speaker Jacks:
Connect a speaker to either of these jacks. Both
jacks can be used at the same time to drive
multiple cabinets. Do not connect a combined
speaker load of less than 4ohms or greater than
16ohms. IMPORTANT: A speaker load must be
connected to the amplifier at all times during
amplifier operation. Failure to do so will result in
output transformer failure very quickly and will
not be covered under warranty. It is a good
practice to get in the habit of listening for normal
amp noise as soon as the standby switch is
moved into the play position. If no noise is heard
the amplifier should be turned off immediately
and the speaker connections checked for integrity.
7. Vibrato Pedal Input: Connect the vibrato lead
of the footswitch (Non-shielded lead) to this jack.
8. Reverb Pedal Input: Connect the reverb lead
of the footswitch (Shielded lead) to this jack.
9. Reverb Output: Connect the output lead from
the reverb tank to the reverb output jack.
10. Reverb Input: Connect the input lead from
the reverb tank to the reverb input jack.
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Tube Layout
Restifier Tube: 5R4. "Replace only with high quality 5R4 (or compatible) tube.
Power Tubes: 6V6 (x2). "Replace only with a high quality matched duet of 6V6 tubes. "The Club D'Lux Classic is a fixed
biased amplifier and therefore will need to be re-biased when changing output tubes.
Phase Inverter Tube: Replace with any high quality 12AT7 tube.
Vibrato Tube: Replace with any high quality 12AX7 or 12AY7 tube.
Reverb Recovery Tube: Replace with any high quality 12AX7 tube.
Reverb Driver Tube: Replace with any high quality 12AT7 tube.
Preamp Gain Tube - Vibrato Channel: Replace with any high quality 12AX7 tube.
Preamp Gain Tube - Normal Channel: Replace with any high quality 12AX7 tube.

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Warranty
The following warranties apply to the original owner of the amplifier. "All warranty work must be performed by Oldfield
or an authorized technician for the warranty to be in effect. "Warranties do not cover normal wear and tear or abuse.
Failure to comply with the safety precautions outlined earlier in the owner’s manual will void all warranties.
Rectifier and Power Tubes: Guaranteed for thirty days after date of purchase. "If a failure occurs Oldfield will replace
any rectifier or power tube during this period free of charge
Preamp Tubes: Guaranteed for ninety days after date of purchase. "If a failure occurs Oldfield will replace any
preamp tube during this period free of charge.
Power Transformer, Output Transformer And Choke: These items are guaranteed for one year after date of purchase
against manufacturer’s defects. "If a failure occurs due a defect in manufacturing Oldfield will replace any of these
items during this period free of charge. "Warranties on these items are void if the owner uses any type of power soak
or attenuator in conjunction with the operation of the amplifier or fails to connect a speaker load to the amplifier while
in operation.
Defects Due To Workmanship: Oldfield guarantees the amplifier to be free from workmanship defects for five years.
Circuit Components: Any failed circuit component will be replaced at Oldfield’s discretion for a period of five years
after the purchase date. "
In every case Oldfield guarantees to work with the customer to remedy any situation in a timely manner and to the
satisfaction of the amplifier owner.