Millennia LOC Analog Legacy Phonographic User Manual
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OWNER'S MANUAL
Archival Phono Preamplifier
Millennia Music & Media Systems
A r c h i v a l
P l a y b a c k
E q u a l i z e r
LOC
Millennia
Media & Music Systems
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LOC
Millennia
Media & Music Systems
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LOC
Millennia
Media & Music Systems
READ THIS FIRST!
Any changes or modications not expressly approved by MILLENNIA MEDIA, INC. could
void your authority to operate this equipment under the EC or FCC rules.
1. Copyright: You acknowledge that no title to the intellectual property in the LOC is transferred to you.
2. Inspection: Inspect packing box(es), LOC, and cable(s) for damage, unusual marks, or
shortages. It is your responsibility to report damage, shortage, or misshipments in a timely
manner. Millennia Media and/or its dealers will not be responsible for claims arising from
damage in shipping, nor will claims for shortage or misshipments be honored, more than 10
days after ship date.
3. Read this manual carefully and completely before attempting to use the LOC. Improper operation could result in damage to product. It is the user's responsibility to understand the safe
use and operation of this device.
4. The shipping box of the LOC system will include (1) Owner's Manual, (2) LOC, (3) a UL
approved power cord (Canada and US units only), (4) Owner's Registration Card. Fill out the
Owner's Registration Card and return to Millennia Media at your earliest ability.
The material contained in this manual consists of information that is property of Millennia Media, Inc. and is intended solely for use by the purchasers of the equipment described in this
manual. Millennia Media, Inc. expressly prohibits the duplication of any portion of this manual
or the use thereof for any purpose other than the operation and/or maintenance of the equipment described in this manual without the express written permission of Millennia Media,
Inc.. Under copyright laws, this manual may not be duplicated in whole or in part without the
written consent of Millennia Media, Inc..
LOC and Analog Legacy are trademarks of Millennia Media, Inc. with all rights reserved. All
other trademarks herein are property of their respective holders. Serial numbers are located
on the left side of each unit. We suggest that you record the serial numbers in the space provided below. Refer to it whenever you call an authorized Millennia Media repair facility or the
manufacturer. Make sure that you return your completed warranty card immediately.
Features and specications subject to change without notice.
© 2007 Millennia Media, Inc., All rights reserved
Serial Nos. ______________________________________________________________
Purchase Date ___________________________________________________________
Where Purchased _________________________________________________________
SAFETY PRECAUTIONS
For your safety and the safety of others, be sure to read and understand all safety and opera-
tional instructions before attempting to use the LOC. WARNING: The LOC internal circuitry
carries lethal voltages. Carefully observe all warnings, precautions, and instructions on the
LOC and as described in the instructions supplied with the unit.
1. WATER, MOISTURE, AND SPILLAGE
Do not attempt to use the LOC in, near, or around water or in unusually moist environments,
such as near a sink or swimming pool. Prevent liquids or any other materials or objects from
spilling or falling into the LOC unit.
2. HEAT AND VENTILATION
Be sure to allow adequate ventilation to LOC and avoid using or installing unit in close proximity
to heat sources, such as heaters, stoves, radiators, power ampliers, spotlights, or other heatproducing appliances or equipment.
3. POWER SOURCES AND POWER CORD PROTECTION
The LOC Power Supply should be connected to a power source only of the type described in
the operating instructions or as marked on the Power Supply. Route the power cord so that it
is not likely to be walked on or pinched by having objects placed on it. Pay particular attention
to plugs, receptacles, and the point where the AC power cord exits the LOC.
4. GROUNDING
For your safety, it is extremely important that the grounding pin of the 3-wire power cable (included with unit) be inserted into a grounding type 3-pin power outlet. If you are unable to insert
the plug into an existing outlet, contact an electrician to install a properly grounded 3-pin power
outlet, preferably that with OFI protection, if available.
5. DAMAGE REQUIRING SERVICE
This unit should be repaired or serviced by qualied personnel whenever:
· The AC power cord has been damaged, or
· An audio cable has been damaged, or
· Objects have fallen or liquid has spilled into any LOC unit, or
· The unit does not function properly or exhibits a marked change in performance, or
· The unit has been abused, dropped, or damaged, or
· The unit has been exposed to rain or moisture
6. SERVICING
Deadly voltages are found inside the LOC chassis. The user should not attempt to repair or
service this unit. All servicing and/or repairs should be referred to Millennia Media.
If, after reading all instructions, precautions, and warnings, you have remaining questions, please
contact Millennia Media directly before attempting to use your LOC. Retain this owner’s manual
as a record of your purchase to aid positive identication in the event of loss.
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LOC
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Media & Music Systems
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LOC
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Media & Music Systems
QUICK START
READ THIS!! For your protection, never under any circum-
stances remove the top cover. Refer to a qualied electronics
technician any and all servicing and other operations which
require the top cover to be removed.
Congratulations on your purchase of the Millennia Media LOC Analog Legacy archive refer-
ence system. The LOC is the culmination of meticulous listening tests on innumerable circuit,
topology, and packaging designs over many years of product design and development. Your
LOC is a nely tuned instrument intended for critical professional applications — we feel it
offers the world's most sonically invisible and versatile phonographic front-end.
Before connecting power to the LOC, assure that the rear panel voltage selection fuse block
switch is set correctly. In the USA and Canada, the LOC is shipped with the voltage selection
block set to 100-120 VAC. If you change the voltage selection block to 200-240 VAC usage,
be sure to change both fuses to the correct types. See "Rear Panel" instructions for proper
fuse requirements.
The LOC enclosure measures approximately 19" wide x 3.5" high x 15" deep and is designed
for mounting into a standard 2U, 19" equipment rack. If the LOC is mounted in a road case
or other rack which is prone to strong vibration or shock, it is highly recommended that the
rear of the LOC be supported or otherwise reinforced to withstand such conditions. The LOC
Analog Legacy runs warm and should be mounted with at least one rack screw space open
above and below the unit.
INTRODUCTION
The LOC Analog Legacy is a hand-crafted collection of Millennia's essential preamplier and equalizer circuitry tailored specically for the needs of archiving and mastering professionals, and serious audiophiles requiring a sonically uncompromised analog front-end. The LOC is a selectable mono or stereo processing chain which can
be used with virtually any modern or legacy phonograph cartridge. Any known type of
legacy record pressing (78, 45, 33, etc.) can be compensated perfectly with the LOC,
including vertical groove processes.
When the LOC does not offer a precise preset compensation point or loading characteristic, the user may dene virtually any custom parameter via plug-in passive components. The LOC offers a discrete-hybrid signal path from input to output, employing
both bipolar and eld-effect transistors where they are best applied for Millennia's
hallmark sonic invisibility and dynamic uniformity. The LOC accepts balanced line
level or phono level input via gold XLR connectors. Outputs are both XLR and RCA
phono. Mains powering is worldwide, universal.
The LOC is designed on a common ground topology. For high quality operation, and for your
own safety and the safety of others, do not defeat the purpose of the AC plug earth ground-
ing pin.
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LOC
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LOC
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Media & Music Systems
LOC REAR PANEL
PUSH PUSH
PUSH PUSH
Chassis/Audio
Ground Strap
100 / 115 / 230 Selection
115
UNBAL UNBAL
UNBAL UNBAL
LOC REAR PANEL
(1) Inputs:
Bal Phono Input 1 Conventional 3-pin female XLR input connectors for use with differential-balanced phono
cartridges. Can also be used with certain line-level sources. Standard input load resistance is 47,000 ohms. This
resistance ( R1 and R2 on each phono preamp PCB) can be changed by the user to facilitate different phono cartridge load requirements. See phono preamp PCB illustration on page 11. Standard input load capacitance is 470
pF. This capacitance (C1 on each phono preamp PCB) can be changed by the user if necessary, but should not
be lower than 270pF. XLR pin 2 is positive polarity. XLR pin 3 is negative polarity. Connector contacts are Neutrik
gold plated. It is suggested that XLR cable connectors used with the LOC employ identical plating.
Bal Phono Input 2, Conventional 3-pin female XLR input connectors for use with all standard phono cartridges.
Can also be used with certain line-level sources. Inputs 2 and 3 connect to an input transformer.
Unbal Phono In 3 Unbalanced RCA input. To use the RCA input connections, select “RCA IN” on the front panel
Use your cartridge manufacturers recommended R/C loading. The cartridge loading can be modied by changing
resistors R2 and R4 and capacitors C1 and C2 on the Input Transformer PCB. See illustration on page 13. J3 and
J6 are normally open. If you are only using this unbalanced in, you can jumper it if necessary for hum problems.
(2) Phono Pre Dir Out
Buffered Direct output from the pre amp card. Post polarity and mono switching. This is the same signal fed into
the compensation and lter circuits.
(3) Phono Pre Trim Out
Adjustable, buffered signal derived from the Direct out.
(4) Unbal EQ Out Pre Trim
Post lter and compensation circuit unbalanced signal. Available in both RCA and XLR connections. Output RCA
connections are independent of input switching.
(5) Bal EQ Out Post Trim
Balanced output from the compensation and lter circuits.
(6) Earth/audio Ground Jumper Strap
A barrier terminal which ties earth ground to audio ground. If ground “hum” loops are experienced when using
the LOC, removing this jumper may help. Using this jumper to lift ground, the integrity of the chassis/earth safety
ground connection is never compromised.
(7) AC Voltage Mains Selection “100-120” or “200-240”
A power entry module with a removable fuse holder block. This fuse holder block is selectable for 100 - 120 Volt
or 200 - 240 Volt worldwide mains powering. The fuse block contains two fuses one fuse is in series with the hot
power line while the other fuse is in series with the neutral power line. Both fuses must be installed. To change the
mains voltage selection, remove IEC power connector and assure that the LOC is not connected to mains power.
With a non-conductive tool, gently pry the fuse block away from the power entry module. Remove the two fuses
and replace both with type as shown below. Slide out the internal PC Board, turn it over, and reinsert the PCB so
that the desired AC mains voltage appears in the viewing window. Double check that the fuses installed correspond to the AC mains voltage range which appears in the viewing window. Gently push the fuse block back until
ush and snug.
FUSES:
For 100-120 VAC mains, use two 5 x 20 mm, 1A, slow blow, 250 V, Littelfuse 218 or equiv.
For 200-240 VAC mains, use two 5 x 20 mm, 500 mA, slow blow, 250 V, Littelfuse 218 or equiv.
Use only the power cord provided with the LOC unit or equivalent U/L approved type SV, SVT
power supply cord. Do not defeat the third pin earth ground. If ground lifting is desired, remove the Earth/Audio
Ground Jumper Strap (topic #6, above).
, SJ, or SJT AC
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