Krell Industries Preamplifier KBL User manual

KBL & KPA OWNERS’ MANUAL

45ConnairRoad
Orange,CT06477-0533,USA
KBL & KPA OWNERS’ MANUAL
INTRODUCTION
Thank you for your purchase of a new KRELLpreamplifier. This Owners’
Manual covers both the KBLand KPApreamplifiers, as they have been
designed to be companion pieces and can be utilized in varying
combinations. For each user there will be information that does not pertain
to their specific situation. Therefore, in the interest of clarity, details
relating to different combinations are presented in well-defined sections.
The KBLand KPArepresent significant departures from traditional
preamplifier design. The time invested in carefully reading this manual
will yield an important understanding of the functions and design features
of the units. Dueto the high level of performance of which these units are
capable, careful placement and installation are crucial. Your thorough
understanding of the operations of the KBLand KPAwill help insure their
maximum performance and long life.
ABOUT THE OWNERS’ MANUAL
The KBL/KPA Owner’s Manual is divided into various groups of
information. The purpose of the document as a whole is to familiarize you
with the units and guide you through their set-up, installation and
operation in a logical progression. The Table of Contents is as follows:
A. Serial Number(s) and Factorv-Shi~ed Confia~ration
B. General Information: a description of the basic design and performance
features of the KBLand KPA
C. Unpacking: detail of accessories shipped with the KBLand KPAin
various configurations

D. Installation: 1. Caution
2. Connector Details
3. Connector Termination Types
4. Cable Requirements for Inputs and Outputs
5. Setting of Internal Switches
6. Unit Location Guidelines and Installation
7. Connection of Inputs and Outputs
8. Turn-on of the Preamplifiers
E. Operation: 1. KPAFunctions
2. KBLFunctions
F. ,W~rranty ~nd Service Information
G. Termination Drawings
A. SERIAL NUMBERS & FACTORY-SHIPPED CONFIGURATION
KBLpreamplifier serial number was shipped from the
factory set-up for stereo operation dual-mono
operation.
Please refer to information specific to this modeof operation throughout the
manual.
Should you wish to change between stereo and monaural operation please
refer to section D. 5. This is only necessary whenchanging either unit
from stereo to monooperation.
All KPAare shipped from the factory set-up for stereo operation. Please
refer to section E. 1. d for information regarding dual-monooperation.
B. GENERAL INFORMATION
The KRELLKBL(Krell Balanced Line) and KPA(Krell Phono Amplifier)
present many new concepts in preamplifier design. The traditional
preamplifier contains both a phono section and a line section. The KBLand
KPAdivide these functions into two separate units. This was done for
several reasons. The primary motivation was to allow adequate space to
accommodatethe latest evolutions of preamplifier circuitry and functions.
2

These units are the current state-of-the-art. Nocompromisewas allowed in
their design. Details concerning their technical performance are covered
in more detail below, A second important consideration was to introduce
the programmable concept employed in our current KSA/KMAamplifier
line into our preamplifier line. Asingle KBLand KPAare used for stereo
operation. Asecond unit of either can be added to achieve dual-mono, fully
balanced operation. Theycan be easily changed without being returned to
the factory. There are many advantages to dual-mono operation. The
capability of the KBLand KPAto operate in either modeallows you to plan
the development of your system over time, without the waste of moneyand
time associated with trading or selling used gear. It also allows you to
optimize your system more closely to your needs. For example, if line
sources are most important, you can purchase two KBLs’,with or without a
KPA. If phono is most important you can purchase two KPA’s and one
KBLcreating a completely balanced path for the phono signal. The
ultimate configuration, of course, is two KBLand two KPA.This creates a
completely dual-mono, balanced preamplifier system for all inputs and
outputs. Other details concerning the functions of the units are covered
belowand in the Installation and Operation sections.
The method used to switch a KBLor KPAfrom stereo to dual-mono
operation is unique. For stereo operation each chassis has complete circuit
paths for the left and right channels. Whenswitched to dual-mono,
balanced operation the left channel circuitry is assigned to the non-inverted
path and the right channel circuitry is assigned to the inverted path. This
changes the rear panel connector assignments on both the KBLand KPA.
See the sections on Installation and Operation belowfor moredetails.
The KBLand KPAuse high-bias, pure Class A circuits throughout,
including the power supplies and regulators. Circuits are DCcoupled,
meaning there are no capacitors in the signal path. The power supply
system and output circuits are extremely high-power when compared with
conventional preamplifier designs. The output section of the KBL,for
example, is really a small power amplifier, capable of swinging 60 volts
peak-to-peak. This allows the KBLto maintain exceptional linearity under
all conditions and drive virtually any length of cable without signal
degradation. The external supply has two stages of regulation. Within
each preamp chassis there are independent tracking regulators for each
section of circuitry, separated channel-to-channel.
The KPAhas completely passive RIAAequalization. Maximumdeviation
from the standard is +/- .1 dB from 10Hz to 20KHz. All parts are 1%
tolerance.
3

Both preamplifiers have innovative operational features. The KBLhas two
balanced inputs and one set of balanced outputs in addition to four single-
ended inputs and one set of single-ended outputs. This allows one KBLto
accommodatebalanced line sources and amplifiers, which Krell believes to
be the standard for high-end audio gear. Therefore, it is only necessary to
purchase a second KBLto achieve dual-mono, fully balanced operation.
The KBLinput labeling is a departure from the norm as well. Instead of
the conventional "phono, tuner, tape, aux, etc." wehave labeled the inputs
B-l, B-2, S-l, S-2, S-3, S-4. Theserefer to BalancedInput #1, BalancedInput
#2, Single-ended Input #1, etc. Components in audio systems today are
unpredictable. This input labeling allows KBLSelector can to be set-up or
changedby each user to create the order he desires.
The KBLhas front panel adjustments for output gain and absolute phase.
The Gain switch provides a course adjustment to compensate for systems of
different efficiencies and for level differences in source components.
The KPAhas inputs for two different cartridges. There is a front panel
switch to adjust between the gains required for moving coil and moving
magnet cartridges. Adjustment for cartridge impedance loading is on the
front panel as well. Perhaps the most interesting features on the KPAare
the front panel adjustments for high and low RIAAtrim. These allow you
to tailor the RIAAequalization to specific records in small increments.
Single-ended/Balanced switching are also on the front panel.
C. UNPACKING
Remove the units from the shipping container. Keep the shipping
materials in a safe, dry place for future use. Thefollowing is a list of the
materials that are included in the packaging.
1 each: preamplifier chassis
KBLpower supply with DCcable installed
ACline cord
"T" shaped Allen driver
Spare fuse for the powersupply
Owner’s Manual
1 KBL~ 1 KPA~acked together
I each: KBL& KPApreamplifier chassis
KBLpower supply with DCcable installed
ACline cord
DCjumper cable (KBLto KPA)
"T" shaped Allen driver
Spare fuse for the powersupply
Owner’s Manual
4

1 KP~without _vower supvlv
1 each: preamplifier chassis
DCjumper cable (KBLto KPA)
"T" shaped Allen driver
Owner’s Manual
1 KPAwith~owersu~pl_v
1 each: preamplifier chassis
KPApower supply with ACand DCcables attached
DCjumper cable (KBLto KPA)*not used whenthe
dedicated KPAsupply is used*
"T" shaped Allen driver
Owner’s Manual
Inspect the unit(s) and powersupply(s) for damage.If any is evident, or
some of the accessories are missing, contact your dealer or the factory
immediately. If everything is in order you can proceed with the next steps.
D, IN/~TALLATION
1. Cautions
Note: These are important points of which you should always be aware.
Theyare presented before the actual installation procedures, should you
not read through the Manualentirely.
a. Wheninstalling the KBLalways connect the DCcable between the
preamp chassis and the power supply before plugging the power supply
into the ACmains.
b. When installing a KBL/KPAcombination ~ connect the DC
cables between the KPAand the KBL, and between the power supply
and the KBLbefore plugging the power supply into the ACmains.
c. ~ disconnect the ACfrom the mains before disconnecting the
DCcable(s) from the preamp(s).
d. A single KPAcannot be operated in balanced mode. The "Balanced"
push-button should not be activated unless two KPAare used.
e. These points are true for both the initial installation of the KBLor
KPAand for revisions of your system that require their relocation.

2. Connector Details
This section, with sections 3 &4 below, presents all details necessary to
make or modify cables for use with all combinations of the KBLand KPA.
After reading these sections, check all the cables you intend to use to make
sure they are appropriate for your installation.
a..Gener~:[ .. Information
Different configurations of the KBLand KPArequire different cable
terminations. The connector assignments for the KBLand KPAinputs
and outputs are given.
b. KBLConnector Assignments: B-l, B-l: female 3-pin XLR
S-l, S-2, S-3, S-4: female RCA
Record Outputs : 2 sets, female RCA
Main Outputs: 1 set on female RCA
1 set on 3-pin maleXLR
c. KPA(~)nnector Assi~arnment: All are female RCA
3. Connector Termination _T~es
For all terminations: Makesure wire color and pin numbers match at both
ends of the cable.
a. Standard RCATermination; uses either coax cable or two-conductor
coaxial cable:
Center pin = audio signal
Outer ring = ground: when using two-conductor coax cable one
center conductor is connected to the outer ring at both ends; the
shield is connected to the outer ring at only one end. This end should
be markedand used at the input end of the cable. For example, this
end would go, to the amplifier whenthe cable is run from preampto
amp.
Used for all RCAinputs and outputs on the KPAand the KBLwhen
operated with single-ended components.
Dta.ndar.d XL.I~T¢rmination: uses two-conductor coa~al qable:
Pin 1 = ground
Pin 2 = non-inverted signal (also called 0 or + signal)
Pin 3 = inverted signal (also called 180 or - signal)
Used on inputs B-l, B-2 and Main Output of the KBLwhen used in
either stereo or dual-re, no.

All Krell Industries and Krell Digital products use this pin-out for
inputs and outputs.
c. Balanced RCATerminatiom uses two-conductor coaxial cable:
See Drawing1 at the rear of the Manualfor details.
1 pr. of RCAconnectors are used on each end of the cable with this
termination; 4 prs. total are used if this termination is used at both
ends.
RedRCACenter pin = first cable center conductor (0 ,or +)
White RCACenter pin = second cable center conductor (180 or -)
Outer Ring, both RCA= shield from around the two center
conductors
Used for inputs S-I, S-2, S-3, S-4, Record Outputs, and the Main
output of the KBLwhenoperated in dual-mono.
Used for both inputs and the Main output of the KPAwhen used in
dual-mono.
Can be used between two KPAsand two KBLsoperating in dual-mono.
d. Balanced RCAto XLRTermination; uses two-conductor coaxial
cable
See drawing2 at the rear of the Manualfor details.
2 prs. RCAand I pr XLRconnectors are used on each pair of
audio cables
The XLRend uses the termination detailed in section b above;
the RCAend uses the termination detailed in section c above.
Pin 2 on the XLRis the non-inverted signal and is soldered to the red
RCA;Pin 3 on the XLRis the inverted signal and is soldered to the
white RCA.
Can be used between two KPAand two KBLoperating in dual-mono.
e. Balanc~ KPAInput Termination; uses two-conductor coaxial cable.
See Drawing3 at the rear of the Manualfor details.
2 prs. of RCAconnectors are used for each cable; 4 prs. total.
This is a special termination that allows for a balanced input from
the cartridge to two KPAs.There is no other use for this termination.
4. Cable Requirements for Inputs and Outputs

Readthe portions of sections a and b belowthat pertain to your system for
the specific cable terminations required.
If you are adding to your system you may need to change some cable
terminations to take full advantage of dual-mono, balanced operation.
ao S_vstemConfi~urationfl~ermination s
Unit(s) Inputs
One KBL B-1 &B-2
S-l, S-2, S-3, S-4
Outputs
Record 1 &2
Main on RCA
Main on XLR
Terminations
male, b
male, a
male, a
male, a
female, b
One KPA 1 &2 Main male, a
Unit(s) Inputs Outputs Termina~0n~
Two KBL *B-1 &B-2
S-1,S-2, S-3, S-4 Record 1 &2
Main on RCA
*Main on XLR
male, b
C
c
c
female, b
*Only the left connectors are operational in dual-mono; the right
connectors are disabled.
Two KPA 1 &2 e
Two KPA Main c
b. Specific KPAto KBLCable Requirements
Unit(s)
One KPAto one or two KBLs
TwoKPAsto one or two KBLs
TwoKPAsto one or two KBLs
5. Setting of Internal Switches
Terminations
a both ends
c both ends
d, w/male XLR(KBL end)

Please read this section to determine if you have the need or desire to
change the internal switches.
a. KBLStereo~D~al-M0n0 ~witches
These switches are used to change the KBLbetween stereo and mono
operation. Their most commonuse is to change an existing KBLfrom
stereo to dual-mono wheninstalling a second KBLfor dual-mono. There
is one double-toggle, two-position dip switch between the input
connectors for B-1 (SW6)and for B-2 (SW7); there is a third near
balanced output connectors (SW8).
All three switches mu@tbe set the same. They are not to be set in any
other combination.
-Positions C2&C4depressed are for stereo operation.
-Positions C1&C3depressed are for monooperation.*
*In dual-mono operation only the lef~ XLReQnneqt0r~ are operational;
the right connectors are disabled. All RCAconnectors remain
operational, but with different functions. See section D3, Connector
Terminations, belowfor details.
b. KBLIndicator LEDswitch
The Symmetry LEDson the KBLcan be disabled. Their function is
unrelated to stereo or monooperation. The switch located just forward
of SW8in the right, rear of the unit, controls this function.
Positions 1 &2 depressed allow the LEDsto light.
Both switches depressed to "Open"disable the LEDs.
6. Unit Location Guideline~ and Installation
Before installation of your KBL/KPA(s)and power supply(s) we recommend
that you follow these guidelines in choosing proper locations for the units.
This will help insure a trouble-free installation and maximum
performance of the preamps.
All associated equipmentshould be turned off at this point.
a. Preamplifier Location Guidelines
1. The KBLand KPAmeasure 19" wide, 13" deep, 2.5" high.
9

Four inches clearance should be allowed abovethe top of either the
KBLor KPA.Only a small amount of clearance is needed on the
sides. Four to six inches clearance should be allowed at the rear of
either unit to providefor cables.
3. The units can be stacked. KPA(s)should be placed on the bottom
with KBL(s)on top.
KPA(s) are sensitive to induced hum from motors or power
supplies. In general, they should be located at least one foot from
other components(with the exception of the KBL).In particular,
power supplies, tape recorders, and turntables should be more
than a foot awayfrom the KPA(s).
b. Preamplifier Installation
Place the preamplifier(s) in position. Checkthat all cable lengths are
adequateat this point.
c. Power Supply Location Guidelines
1. The KBLsupply measures 9.75" wide, 12" deep, 2.25" high
The KPAsupply measures 7.25" wide, 7.75" deep, 2.5" high
(Only KPAnot powered from a KBLhave a separated supply)
2. Six foot ACand DCcables are provided with the supply(s).
Plan the respective position of the supply(s) and preamplifier(s)
within these distances. Allow at least a small amountof cable to be
excess, so neither cable is pulled tight. Contact the factory if the DC
cable is too short. Anyattempt to extend it jeopardizes the power
supply and the preamp, and will void the unit’s warranty.
3. Although well shielded, the power supply(s) should not be placed
close to hum-sensitive components such as turntables, phono
preamps or tape recorders.
4. Allow ample air space around the supply(s) for heat dissipation.
Five inches on top and two inches on each side is adequate. Two
supplies should not be placed directly on top of each other. They
should be placed side-to-side.
5. The KBLor KPAsupplies do not require that an ACVcircuit be
dedicated for their use. Theyshould be connected to a 15 or 20 amp
circuit that is dedicated for the source components and the
preamplifiers. Donot connect them to the mains with light-gauge
(18 or higher) extension cords or multiple outlet adapters.
extension cords, outlet strips and goodquality surge protectors that
are rated for 15 ampsand grounded are acceptable.

d. PowerSupply Installation
1. Place the powersupply(s) in location.
2. Connect the DCcable(s) from the supply(s)to the preamp(s)
3. Plug the DCjumper between the KBL(s) and KPA(s).
4. Donot plug the ACconnector(s) into the mainsat this time.
7. Connection of Inputs and Outputs
All source componentsand amplifiers should be off at this point.
Whenconnecting balanced components to the KBLvia RCAconnectors be
sure to maintain proper polarity of the non-inverted and inverted inputs.
Thenon-inverted inputs are the Left connectors on the top row; the inverted
inputs are the Right connectors on the bottom row. Also, if you are using
two KBLin dual-mono, remember that the Left XLRsare operational and
the Right XLRconnecters are disabled.
a. Connection of Input Sources
1. Connection of the KPAInputs and Outputs
Either input can accommodate a moving magnet or moving coil
cartridge.
Single KPA:connect the cartridge outputs to the KPAinputs 1 &2 in
the conventional manner.
Dual KPA.balanced in~)ut wiring from the cartridge(s); connect the
"high" (left = white, right = red) output fromthe cartridge to the left
input connectors on the KPAs.Connectthe "low" (left = blue, right
green) to the right input connectors on the KPAs.Typically the top
unit is used for the left channel and the bottom unit is used for the
right channel.
The output of the KPAis high-level input and can be sent to any
input on the KBL(s). Connect the output of the KPA(s) to the
inputs at this time.
2. Connection of KBLInl~ts
The inputs of the KBLhave not been labeled with specific component
namesso you can set up the Select switch pattern to your preference.
B-1 and B-2 refer to Balancedinputs 1 &2; S-l, S-2, S-3, S-4 refer to
Single-ended inputs 1 through 4. Once you have decided which
componentwill be assigned to which input, proceed with connecting
the source componentsto the desired inputs.

b. Connection of KBLRecord Outputs
There are two Record outputs which receive the signal from the input
chosen on the Select switch for sending to two tape recorders. The two
outputs are wired in parallel and have no relation to any of the inputs.
Makethe connections between the Record outputs and tape recorders at
this time.
c. Connection of the KBLMain Outputs
There are two sets of Mainoutputs: one set single-ended on RCAs’,one
set balanced on XLRs.They are wired in parallel and can be connected
and operated simultaneously. They are provided to drive two
independent systems from one preamplifier.
Makethe connections between the Main outputs and amplifier(s) and]or
crossovers at this time.
8. Turn-on of the Preamulifiers
a. Initial Turn-On
All source components and amplifiers should be off at this point. The
KPAand KBLSelect switches should be set to "Mute" position, and the
KBLvolumecontrol(s) should be fully counterclockwise.
Connect the KBLand KPA(if a separate supply is being used for the
KPA)power supply(s) to the ACmains at this point. The LED’son
power supply(s) and on the preamplifier front panel(s) should
illuminate. Noneof the other LEDs’should be illuminated at this point.
b. Future Use
The KBLand KPAare designed to be on at all times. In other words,
they are not intended to be routinely switched on and off. Theonly times
it is recommendedto turn the units off is whenyour system will be left
unattended for a long period of time, such as during a vacation or a
business trip. In these cases all other equipment should be turned off,
and the KBL/KPApower supply(s) should be disconnected from the
mains. Whenyou return, re-connect the supply(s) to the ACmains
before turning on other equipment.
This procedure should also be followed if you reorganize your system
and need to change the wiring of the supply(s) to the preamps.

E. OPERATION
1. KPAFunctions
Use the Select switch to choose between two different cartridges or
tonearms. If the two inputs are not the same type cartridge be sure to
change the gain with the Gain switch to avoid any overload conditions.
See section c below.
b. LQading
Use the Loading switch to adjust the impedance load for the selected
cartridge input. This can be adjusted while listening with the KBLor
preamp volume at normal levels without causing damage to any other
component. The correct load for any cartridge is a matter of personal
taste. Start by setting the control to the load recommendedby the
manufacturer. Evaluate the sound at this and several other settings.
Experiment until you determine the setting for the most desirable sound
quality.
Use the Gain switch to change the KPAbetween moving coil and moving
magnet gain. The LEDindicator will illuminate whenthe unit is set for
moving magnet gain. The switch con only be o~uerated when the Select
switch is in its Muteposition.
d. Balanced
The Balanced switch is used to change the unit from stereo to dual-mono
operation, balanced, whentwo KPAsare being used.
To activate Balanced operation put the Select to its Muteposition and
then engage the Balanced switch. The LEDindicator will illuminate
whenthe unit is set for balanced operation.
This switch is only for use with two KPAsoperating in dual-mQno, It
cannot be used with one KPA.
e. I~IAAAdjustment. 20 Hz
Use this switch to makesubtle adjustments to the low end of the RIAA
equalization curve. The LEDindicator will illuminate whenthe switch
is in any position other than flat.
13

This switch can be operated while listening to the KPAat normal levels
without risk of damageto the preamplifier, amplifier(s) or speakers. Its
setting is a matter of personal taste.
f. RIAAAdjustment. 20 KHZ
Use this switch to makesubtle adjustments to the high end of the RIAA
equalization curve. The LEDindicator will illuminate whenthe switch
is in any position other than flat.
This switch can be operated while listening to the KPAat normal levels
without risk of damageto the preamplifier, amplifier(s) or speakers. Its
setting is a matter of personal taste.
2. KBLFunctions
Use the Select switch to choose between the various source (playback)
components for listening. Be sure to lower the volume when switching
amongcomponents, as large differences in level between sources can
cause damage to other components.
TheSelect switch is also used to choose the signal to be sent to the tape
recorders via the Record outputs.
Whentwo KBLsare used in dual-mono, both Select switches must be set
the same.
There is a Mutefunction at the 12 o’clock position that should be used
whensource material is being changed, or whensource components are
being turned on and off, and at the completion of each listening session.
Note: Componentsthat are not being listened to should be turned off or
have their volume turned down. For instance, a tuner should be turned
off, or haveits volumeloweredwhileit is not being listened to.
b. Monitor
Use the Monitor switch to listen to the playback from a recording device.
This can be done while the recording is in process, such as with three-
head tape recorder, or during playback only.
The inputs available on the Monitor switch are S-1 and B-2. These are
wired in parallel to the sameinputs on the Select switch.

Input B-2 on the Monitor switch uses only the non-inverted signal.
Therefore, if you are feeding a balanced signal into B-2, there will be a 6
dB difference in level between B-2 on the Select switch and on the
Monitor switch. The level on the Select switch will be the higher one.
Note: Be careful not to create a feedback loop between the KBLan tape
recorder. This can happen by selecting the tape recorder output on the
Select switch and having the tape recorder set on "source". This set-up
takes the output of the tape recorder to the KBL,through the Record
output, back to the tape recorder inputs, and out the tape recorder
outputs to the KBLagain. Whendoing Tape/Source comparisons always
use the Monitor switch for the tape recorder output and do the
Tape/Source switching on the tape recorder.
Use the Gain switch to adjust the overall gain of the KBL.The Low
position is 9 dBof gain; the Highposition is 15 dB. The LEDindicator is
illuminated whenthe switch is in the High position. The switch can be
changed during listening at low and moderate listening levels. During
high level listening it is advisable to lower the volumebefore adjusting
the switch.
Use the Phase switch to reverse the absolute phase of the Mainoutputs.
The switch is functional for both the single-ended and balanced outputs.
The LEDindicator is illuminated when the switch is set for phase
reversal.
Whentwo KBLsare used, the Phase switch on one KBLcan be used to
reverse the phase of one channel in relation to the other.
Manyrecordings have had their overall phase reversed during the
various processing stages. When the absolute phase and phase
relationship between channels is correct there are improved transients
and dynamic detail.
e. 8_vmmetry
1. One KBLOueratin~ in StereQ
Whena single KBLis used for stereo operation the function of the
Symmetrycontrol is like a conventional balance control. Use it to
adjust for small level differences betweenchannels. There are four 1
dBsteps of attenuation and an Off position for each channel.

Whenthe control is turned clockwise the left channel is attenuated;
whenturned counterclockwise the right channel is attenuated.
The LEDindicators may illuminate at high listening levels. This
indicates that a level difference exists between the left and right
channels at that moment.This can be disregarded unless there is an
audible channel imbalance.
2. TwoKBLOperating in Dual-Mono
When two KBLare used for dual-mono operation the Symmetry
control adjusts for differences in level between the non-inverted and
inverted outputs. Whenthere is an imbalance between the two
outputs one of the LEDswill illuminate to indicate the output that is
lower in level. Turn the control in that direction until the LEDgoes
out. This mayor maynot occur in both channels at the sametime.
TheLEDscan be disabled if desired. See section D, 5 abovefor details
on turning off the LEDs.
Usethe level control to adjust the listening level.
Whentwo KBLsare used the level controls on the two preamps also
control the balance betweenleft and right channels.
F. WARRANTY
The KBLand KPAhave a limited warranty of five years from the date of
purchase. Please return completed warranty cards for each unit
immediately after successful installation and operation are completed.
The warranty for all Krell product is valid in the country to where it was
originally shipped and at the factory. If there are problems with your
unit(s) please contact your dealer or the factory immediately.
Shouldyour unit need to be repaired, contact the factory or your distributor
for a return authorization. Freight to the factory or distributor is your
responsibility. Return freight to you will be paid by the factory or
distributor.
9/11/90 16

Balanced RCA[o RCAcable wiring diagram
Drawing I, Termination c.
(WHITE)non-inverting: solder to white RCAcenter pin
~,. \\(BLACK)inverting:L~..., solder to red RCAcenter
\\ ELDwire): solder to white non-inverting RCAcase
(SHIELDwire): solder to red inverting RCAcase
solder extra wires to shield for RCAground
solder extra wires to shield for RCAground
~ .//~ \... (SHIELDwire): solder to red inverting RCAcase
/.. (SHIELDwire): solder to white non-inverting RCAcase
.../ (BLACK)inverting: solder to red RCAcenter pin
(WHITE)non-inverting: solder to white RCAcenter pin

Balanced RCALo XLRcable wiring diagram
Drawing 2, Termination d.
BA L A NCED R CA END
(WHITE)non-inverting: solder to white RCAcenter pin
BLACK)inverting: solder to red RCAcenter pin
~,~C. ,(SHIELDwire): solder to white non-inverting RCAcase
(SHIELDwire): solder to red inverting RCAcase
solder extra wires to shield for RCAground
solder extra wire to shield for XLRground
~/! (SHIELD wire): ground solder to Din #i
/ (BLACK)inverting: solder to pin #3 on XLR
(WHITE)non-inverting: solder to pin#2 on XLR
I
~I~L II NCEDXL R END
on XLR

Balanced KPAcable wiring diagram
Drawing 3, Termination e.
B~I L A NCEDKPAEND
(WHITE)non-inverting: solder to RCAcenter
., (,,BLACK)inverting: solder to RCAcenter pin
\’" "’~ (SHIELDwire): solder to non-inverting RCAcase
: (SHIELDwire): solder to inverting RCAcase
/
/
1/
solder extra wires to shield for RCAground
solder extra wire to shield For ground
(Keep seperate from RCAcase)
(BLACK)inverting: solder to RCAcase
(WHITE)non-inverting: solder to RCAcenter pin
1
TURNTABLE END
to Turntable ground
i f necessary.