6
LPE-2
LPE-2 REAR PANEL
(1) PHONO INPUTS "PHONO / LINE INPUTS L/R"
Conventional 3-pin female XLR input connectors for use with all standard phono cartridges. Can also be
used with certain line-level sources. Standard input load resistance is 47,000 ohms. This resistance (2
places, R11 & R40) can be changed by the user to facilitate different phono cartridge load requirements.
See illustration on page 11. Standard input load capacitance is 270 pF. This capacitor (C17) can be changed
by the user if necessary. See illustration on page 12. XLR pin 2 is positive polarity. XLR pin 3 is negative
polarity. Connector contacts are Neutrik Galvatronic gold plated. It is suggested that XLR cable connectors
used with the LPE-2 employ identical plating.
(2) OUTPUTS "LINE OUTPUT L/R"
Conventional three pin male XLR connectors providing unbalanced, line level output from the LPE-2. Pin 1
and 3 are audio ground. Pin 2 is positive polarity. This output is capable of driving <600 ohm loads and
long, high capacitance cables and has a maximum output level of +26 dBu. Connector contacts are Neutrik
Galvatronic gold plated. It is suggested that XLR cable connectors used with the LPE-2 employ identical
plating.
(3) FILTERS SELECT "FILTERS IN / OUT"
Two position toggle switch which allows the corrresponding filter section to be switched entirely out of
circuit. When filters are not in-circuit (OUT position, switch down), filter stage amplification has been
bypassed entirely, providing improved overall sonic performance.
(4) EARTH/AUDIO GROUND JUMPER STRAP
A barrier terminal which ties earth ground to audio ground. If ground "hum" loops are experienced when
using the LPE-2, removing this jumper may help. Using this jumper to lift ground, the integrity of the
chassis/earth safety ground connection is never compromised.
(5) 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 LPE-2
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 flush 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.
(6) POWER ENTRY "IEC Power Receptacle"
An IEC-type AC line-power receptacle for use with removable cords. Use only the power cord provided
with the LPE-2 unit or equivalent U/L approved type SV, SVT, SJ, or SJT AC power supply cord.
Do not
defeat the third pin earth ground.
If ground lifting is desired, remove the Earth/Audio Ground Jumper Strap
(topic #4, above).
