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SERIES II 15 AMP PowER CondItIonERS
I N T R O D U C T I O N
trusted over-voltage circuitry protects against
all too frequent accidental connections to 208
or 240 VAC, by shutting off the incoming power
until the over voltage condition is corrected.
[For E versions: Furman’s SMP+ clamps at 376
VpK, (266 VAC RMS.)]
Thank you for purchasing a Furman Series II
Power Conditioner, and congratulations on
your choice. The Series II power conditioners
feature Furman’s revolutionary Series Multi-
Stage Protection Plus (SMP+) circuit, as well
as our exclusive Linear Filtering Technology
(LiFT). Together, these technologies comprise
what is, without question, the world’s most
advanced and comprehensive transient
voltage surge suppressor / conditioner.
LiFT (Linear Filtering Technology)
Unfortunately, traditional AC filter - conditioners
have been designed for unrealistic laboratory
conditions. Prior technologies, whether
multiple pole filter or conventional series
mode, could actually harm audio and video
performance more than they help, due to the
resonant peaking of their antiquated, non-linear
designs. Under certain conditions, these
designs can actually add more than 10 dB of
noise to the incoming AC line! Worse still, lost
digital data, the need to re-boot digital pre-sets,
or destroyed digital converters are frequently
caused by excessive voltage spikes and AC
noise contaminating the equipment ground.
Furman’s SMP with LiFT takes another
approach, ensuring optimal performance
through linear filtering and no leakage to
ground.
SMP+ (Series Multi-Stage Protection
Plus)
Furman’s SMP+ surge suppression virtually
eliminates service calls. Traditional surge
suppression circuits “sacrifice” themselves
when exposed to multiple transient voltage
spikes, requiring the dismantling of your
system, and repair of your surge suppressor.
Not so with SMP+. With Furman’s SMP+,
damaging transient voltages are safely
absorbed, clamped, and dissipated.
Unique to Furman’s SMP+ is its unparalleled
clamping voltage. While other designs offer
clamping voltages that are well above 330 Vpk,
Furman’s SMP+ clamps at 188 Vpk, (133 VAC
RMS) even when tested with multiple 6000 Vpk
- 3000 amp surges! This unprecedented level
of protection is only available with Furman’s
SMP+ technology. Additionally, Furman’s
SAF E T Y I N F O R MAT I O N
To obtain best results from your Furman Series
II Power Conditioner, please read this manual
carefully before using.
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SERIES II 15 AMP PowER CondItIonERS
that they are not likely to be walked on, tripped
over, or stressed. Pay particular attention
to the condition of the cords and cables at
the plugs, and the point where they exit your
Series II unit. To prevent risk of fire or injury,
damaged cords and cables should be replaced
immediately.
6. Clean your Series II unit with a damp cloth
only. Do not use solvents or abrasive cleaners.
Never pour liquid on or into the unit.
WA R N I N G
To reduce the risk of electrical shock, do not
expose this equipment to rain or moisture.
Dangerous high voltages are present inside the
enclosure. Do not remove the covers. Refer
servicing to qualified personnel only. The
lightning flash with an arrowhead symbol is
intended to alert the user to the presence of
un-insulated dangerous voltage within the
product’s enclosure that may be of sufficient
magnitude to constitute a risk of electric shock.
7. Your Series II unit should be serviced by
qualified service personnel when:
• The power supply cord or the plug has been
frayed, kinked, or cut.
• Objects have fallen or liquid has spilled into
the unit.
IMPORTANT SAFETY
INSTRUCTIONS
• The unit has been exposed to rain or other
moisture.
• The unit does not appear to operate normally.
• The “Protection OK” indicator is not lit.
• The unit has been dropped, or the enclosure
has been damaged.
(Please read prior to installation)
1. Please read and observe all safety and
operating instructions before installing your
Series II unit. Retain these instructions for
future reference.
• The retractable LED lights have failed. (not
applicable to the PM-8 II)
2. Your Series II unit should not be used near
water – for example, near a bathtub, washbowl,
kitchen sink, laundry tub, in a wet basement,
near a swimming pool, etc.
8. Your Series II unit requires that a safety
ground be present for proper operation. Any
attempt to operate the unit without a safety
ground is considered improper operation and
could invalidate the warranty.
3. Do not place your Series II unit near heat
sources such as radiators, heat registers,
stoves, or other appliances that produce heat.
9. Do not attempt to service your Series II unit
beyond what is described in this manual. All
other servicing should be referred to qualified
service personnel.
4. The PL-8 II, PL-Plus II, PL-Plus D II, and PM-
8 II should only be connected to a 120 VAC,
60Hz, 15 amp grounded electrical outlet. Do
not defeat the ground or change polarization of
the power plug. (E- versions 220 – 240 VAC 50 Hz. /
J- versions 100 – 120 VAC 50 Hz.)
ADDITIONAL F EATU R E S
PL-8 SERIES II
5. Route the power cord and other cables so
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SERIES II 15 AMP PowER CondItIonERS
The PL-8 II features LED rack lights which
produce virtually no heat and provide an
extremely long life span. A dimmer control
for the rack lights allows the user to adjust
the level of illumination or simply switch the
lights off. Additionally, a rear mounted BNC
jack accepts any standard (12VAC 0.5 amp)
gooseneck lamp for rear rack illumination.
The PL-8 II has a master switch for all outlets
and easily reset should the unit be overloaded.
The PL-Plus II also features a 10 foot, 14
gauge heavy-duty power cable.
PL-PLUS D SERIES II
The PL-Plus D II features LED rack lights
which produce virtually no heat and provide
an extremely long life span. A dimmer control
for the rack lights allows the user to adjust the
that glows red when the power is on. The front- level of illumination or simply switch the lights
panel circuit breaker can be quickly and easily
reset should the unit be overloaded. The PL-8
II also features a 10 foot, 14 gauge heavy-duty
power cable.
off. A rear mounted BNC jack accepts any
standard (12VAC 0.5 amp) gooseneck lamp for
rear rack illumination.
Additionally, the PL-Plus D II offers a laboratory
precision digital meter that displays incoming
voltage in 1-volt steps. The voltmeter’s
accuracy is ±1.5 volt.
PL-PLUS SERIES II
The PL-Plus II features LED rack lights which
produce virtually no heat and provide an
extremely long life span. A dimmer control
for the rack lights allows the user to adjust the
level of illumination or simply switch the lights
off. A rear mounted BNC jack accepts any
standard (12VAC 0.5 amp) gooseneck lamp for
rear rack illumination.
The PL-Plus D II has a master switch for all
outlets that glows red when the power is on.
The front-panel circuit breaker can be quickly
and easily reset should the unit be overloaded.
The PL-Plus D II also features a 10 foot, 14
gauge heavy-duty power cable.
Additionally, the PL-Plus II offers a 20
PM-8 SERIES II
segment LED bar-graph meter that displays
incoming voltage between 90 and 128 volts
in 2-volt steps. The normal range voltages
are indicated in green, with moderately and
extremely high or low voltages in yellow and
red respectively. The voltmeter’s accuracy is ±2
volts. It can easily be re-calibrated, if necessary.
(E- versions 180 – 256 VAC in 4 volt steps / J-
versions 80 - 118 VAC in 2 volt steps)
The PM-8 II features two laboratory precision
digital meters that display both incoming
voltage in 1-volt steps, and a true R.M.S.
current meter that measures the AC power
draw within 0.5 amp. A rear mounted BNC
jack accepts any standard (12VAC 0.5 amp)
gooseneck lamp for rear rack illumination.
The PM-8 II has a master switch for the rear
outlets that glows red when the power is on.
The front-panel circuit breaker can be quickly
and easily reset should the unit be overloaded.
The PM-8 II also features a 10 foot, 14 gauge
The PL-Plus II has a master switch for all
outlets that glows red when the power is on.
The front-panel circuit breaker can be quickly
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SERIES II 15 AMP PowER CondItIonERS
heavy-duty power cable.
off with the rear light power switch located on the far
left of the front panel. The Series II’s front panel
LED lamps must be replaced by qualified
Furman service personnel.
O PE RATI O N
Retractable Rack Lights, Rear Panel Lamp
and dimmer Control:
Multi-Segment LEd voltmeter:
(PL-Plus II only)
The PL-8 II, PL-Plus, and PL-Plus D II utilize
a dimmer control for the two retractable front
panel light tubes. The dimmer knob controls
the brightness of both light fixtures. Turn
it clockwise to increase brightness; turn it
counterclockwise to decrease brightness.
When the lights are not in use, we recommend
turning the dimmer fully counterclockwise to
maximize the life of the LED’s, however, this
is not absolutely necessary. Whether the light
tubes are retracted or flush with the front panel,
there will be no appreciable heat regardless of
dimmer setting due to the efficiency of our full
light spectrum LED’s.
This three-color, 20-LED bargraph is an
accurate, self checking AC voltmeter that
continually measures normal voltages. The
meter reads from 90 to 128 volts in 2 volt
increments (PL-PLUS E II: 180 to 256 volts, in
4 volt increments). The normal range voltages
are indicated in green, with moderate and
extremely high or low voltages in yellow and
red respectively. The voltmeter provides three
special flashing patterns to indicate abnormal
conditions.
(1) If only the single leftmost (beneath the
90V mark – 180V for E version) LED
flashes, the input voltage is marginally
low.
All Series II units feature a rear rack BNC
socket which will accept any 12 VAC (0.5A)
gooseneck lamp assembly, (such as the
Furman GN-LED or GN-I). Simply slide the
BNC plug over the socket and rotate clockwise
until the connector snaps into the locked
position. The rear rack lamp can be powered on or
(2) If all of the LED’s on the voltmeter
flash, the input voltage is marginally
high. Power to the PL-Plus’s outlets
will remain unless the incoming voltage
rises above the Extreme Voltage
Mains Vltg. Voltage Status
Voltmeter Reading
Outlets
80-90
Low Marginal
Low
Medium Low
Normal
Medium High
High
High Marginal
The LED beneath the 90V mark flashes
Meter Reads in Low Red
Meter Reads in Low Yellow
Meter Reads in Green
Meter Reads in High Yellow
Meter Reads in High Red
All Meter LEDs Flash
ON
ON
ON
ON
ON
ON
ON
90-104
106-108
110-120
122-124
126-128
130-140
Above 140
Extreme (Shutdown)
Meter off—Extreme Voltage LED illuminatesOFF
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SERIES II 15 AMP PowER CondItIonERS
Shutdown cutoff voltage (135 - 140
volts, 260 – 265 volts E version, 120
- 125 volts J version).
This 15 amp capacity power switch is specifically
designed to stand up to the enormous high inrush
current demands of many Power Amplifiers.
Additionally, the semi-transparent rocker lights
when switched to the “ON” position. (E-versions
feature 10 amp capacity)
(3) If none of the LED’s on the voltmeter
are lit, and the Extreme Voltages
LED indicator is illuminated, then the
PL-Plus II has shut down power to its
outlets because the input voltage is in
a range considered extreme (in excess
of 135 volts - 260 volts E version, 120
volts J version).
Extreme Voltage Shutdown Indicator:
This LED is normally off. It monitors a hazard
common in the entertainment industry: wiring
faults – for example, accidental connection
to 220VAC where 120VAC is expected, or an
open neutral from a 208 or 240VAC feed. The
Series II SMP+ circuit senses voltages that are
so high that operation would be impossible and
shuts the power down before damage can occur.
Upon initially applying power to these units, the
Extreme Voltage indicator LED will light if the
input voltage is above the extreme voltage cutoff,
and power will not be applied to the unit’s outlets.
If the unit has been operating with an acceptable
input voltage and subsequently that voltage
exceeds 135V, it will shut off power to the outlet
and the Extreme Voltage LED will light.
digital Voltmeter:
(PL-Plus d II and PM-8 II only)
Furman’s laboratory precision AC digital
voltmeter continually measures incoming
voltages, within a typical tolerance of +/-
1.5VAC. It should be noted that the voltage
reading is incoming. No adjustment should be
necessary on these units.
digital Current Meter: (PM-8 II only)
Furman’s laboratory precision AC digital
current meter continually measures the total
circuit AC load, within a typical tolerance of
+/- 0.5 amp. Because these meters feature
true R.M.S. technology, the current readings
are accurate regardless of load conditions
(capacitive, inductive or resistive).
E version: over voltage shut down is 260 VAC
J version: over voltage shut down is 125 VAC
Guards against open neutral and accidental
connection to 300+ VAC
Protection oK Indicator:
Although the Furman SMP circuit assures virtually
free protection from transient voltage spikes and
surges, nature has a way of occasionally creating
electrical forces that are beyond the capabilities
of any TVSS device to absorb without some
degree of damage. In the rare instance that this
occurs, the green “Protection OK” LED indicator
located on your front panel will dim. If this
happens, some level of protection from voltage
surges will remain, but the Furman’s clamping
notE: The PL-8 II, PL-Plus II, PL-Plus D
II, and PM-8 II do not compensate for high or
low line voltage. If you frequently move your
rack to different locations, derive power from
generators, use long extension cords, travel
internationally, or are in an area prone to
brownouts, you may benefit from the use of
one of Furman’s AC Line Voltage Regulators.
on/off Rocker Switch:
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SERIES II 15 AMP PowER CondItIonERS
voltage rating will be compromised. The unit
must be returned to Furman Sound, or an
authorized Furman Service center for repair.
volts (260 – 265 volts E version, 120
- 125 volts J version), causing power to the unit’s
outlets to be shut down. Additionally, if the voltage
is below 85 - 90 volts at turn on, the unit will not
allowAC voltage to reach the outlets.
notE: If the mains power is above the high
cutoff voltage and has caused the unit to
remove power from its outlets, it cannot restore
power without the operator manually turning
the unit off, then on again. Avoid turning the
unit back on, without first checking the source
of the problem, and perhaps changing the AC
source.
Action needed: Correct the line voltage, then
turn the unit on. Consider installing a Furman
voltage regulator.
DEFINITIONS
SPIKE: This is a pulse of energy on the
power line. Spikes can have voltages as
high as 6000 volts. Though they are usually
of very short duration, the energy they
contain can be considerable, enough to
damage sensitive solid-state components
in audio and computer equipment. Spikes
can also foul switch contacts and degrade
wiring insulation. They are an unavoidable
component of electric power. They are caused
unpredictably by electric motors switching
on or off (on the premises or outside), utility
company maintenance operations, lightning
strikes and other factors. Spikes (also called
surges or transients) are absorbed by special
components in the PL-8 and PL-PLUS to
provide safe voltage levels to protect your
equipment.
TROUBLE SHOOTING GUIDE
1.) Symptom: No power to the AC outlets.
Possible Cause: Circuit breaker has tripped
due to excessive load.
Action needed: Remove one piece of
equipment from the Series II unit, and push the
square re-set tab into the Circuit breaker bezel.
2.) Symptom: No power to the AC outlets,
“Protection OK” indicator is not lit.
Possible Cause: Either the AC outlet to which
your Series II device is connected has no AC
voltage present, or the unit has been subjected
to a sustained voltage in excess of 400 Volts.
RFI/EMI INTERFERENCE: Noise from RFI
(Radio Frequency Interference) or EMI (Electro
Magnetic Interference) involves lower voltages
and less energy than is found in spikes, but it
is continuous rather than transient in nature.
It is not likely to cause damage, but it can
certainly be annoying, producing static in audio
circuits, “snow” on video screens, or garbled
data in computers. Noise can be introduced
Action needed: Plug the Series II unit into an
AC receptacle where AC voltage is present. If
the problem persists, the protection circuit may
be damaged, and require factory service.
3.) Symptom: Extreme Voltage indicator lit.
Possible Cause: Input voltage is above 135- 140
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SERIES II 15 AMP PowER CondItIonERS
into AC lines by nearby radio transmitters,
defective Product. Return shipping charges back
certain kinds of lighting, electric motors, and
other sources. Because noise occurs at higher
frequencies than the 50 or 60 Hz AC line, it can
be effectively reduced through use of low-pass
filtering.
to Purchaser will be paid by Manufacturer
THE FOREGOING IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE.
Manufacturer does not warrant against damages
or defects arising out of improper or abnormal
use of handling of the Product; against defects
or damages arising from improper installation,
against defects in products or components
not manufactured by Manufacturer, or against
damages resulting from such non-Manufacturer
made products or components. This warranty
shall be cancelable by Manufacturer at its
sole discretion if the product is modified in any
way without written authorization from Furman
Sound. This warranty also does not apply to
Products upon which repairs have been affected
or attempted by persons other than pursuant to
written authorization by Manufacturer.
THREE YEAR LIMITED
WARRANTY
Furman Sound, LLC., having its principal place
of business at 1997 South McDowell Blvd.,
Petaluma, CA 94954 (“Manufacturer”) warrants
its 15 amp Series II Power Conditioners (the
“Product”) as follows:
Manufacturer warrants to the original Purchaser
of the Product that the Product sold hereunder
will be free from defects in material and
workmanship for a period of three years from the
date of purchase. The Purchaser of the product
is allowed fifteen days from the date of purchase
to complete warranty registration by mail or on-
line at the Furman website. If the Product does
not conform to this Limited Warranty during the
warranty period (as herein above specified),
Purchaser shall notify Manufacturer in writing
of the claimed defects. If the defects are of
such type and nature as to be covered by this
warranty, Manufacturer shall authorize Purchaser
to return the Product to the Furman factory or to
an authorized Furman repair location. Warranty
claims should be accompanied by a copy of the
original purchase invoice showing the purchase
date; this is not necessary if the Warranty
Registration was completed either via the mailed
in warranty card or on-line website registration.
Shipping charges to the Furman factory or to
an authorized repair location must be prepaid
by the Purchaser of the product. Manufacturer
shall, at its own expense, furnish a replacement
Product or, at Manufacturer’s option, repair the
THIS WARRANTY IS EXCLUSIVE. The sole
and exclusive obligation of Manufacturer shall
be to repair or replace the defective Product in
the manner and for the period provided above.
Manufacturer shall not have any other obligation
with respect to the Products or any part thereof,
whether based on contract, tort, strict liability
or otherwise. Under no circumstances, whether
based on this Limited Warranty or otherwise,
shall Manufacturer be liable for incidental, special,
or consequential damages. Manufacturer’s
employees or representatives’ ORAL OR
OTHER WRITTEN STATEMENTS DO NOT
CONSTITUTE WARRANTIES, shall not be relied
upon by Purchaser, and are not a part of the
contract for sale or this limited warranty. This
Limited Warranty states the entire obligation of
Manufacturer with respect to the Product. If any
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SERIES II 15 AMP PowER CondItIonERS
part of this Limited Warranty is determined to be
SPECIFICAtIonS
void or illegal, the remainder shall remain in full
force and effect.
Current rating:
15 amps (“E” versions 10 amps)
Operating Voltage:
S E R V I C E
90 to 140 VAC (“E” versions 180 to 260 VAC)
Over Voltage Shutdown:
Before returning any equipment for repair,
please be sure that it is adequately packed and
cushioned against damage in shipment, and
that it is insured. We suggest that you save the
original packaging and use it to ship the product
for servicing. Also, please enclose a note giving
your name, address, phone number and a
description of the problem.
NOTE: All equipment being returned for repair
must have a Return Authorization (RA) Number.
To get an RA Number, please call the Furman
Service Department: (707) 763-1010, ext. 121.
Please display your RA Number prominently on
the front of all packages.
140 VAC typically (“E” versions 260 VAC typically, “J”
versions 125 VAC typically)
Voltmeter Accuracy:
PL-PLUS II only: ±2 VAC, calibrated with internal
trimpot adjustments
PL-PLUSD & PM-8: ±1.5 VAC,
Current meter: ±0.5A
Spike Protection Modes:
Line to neutral, zero ground leakage
Spike Clamping Voltage:
188 Vpk @ 3,000 amps, (133 VAC RMS)
(“E” Version: 376 Vpk (266 VAC RMS)
Response time:
1 nanosecond
Make sure to pick up one of
Furman’s goosneck lights -
the perfect accessory
Maximum surge current:
6,500 amps
for your Series II unit.
Noise attenuation:
10 dB @ 10 kHz
40 dB @ 100 kHz
100 dB @ 10 MHz
Linear attenuation curve from 0.05 - 100 ohms
line impedance
Mechanical:
Dimensions: 1.75” H x 19” W x 10.5” D.
Weight: 11 lbs (5 kg).
Construction: Steel chassis, .125” brushed and
black anodized aluminum front panel; glass epoxy
printed circuit boards
Power Consumption:
PL-8 II, 6 watts
PL-PLUS II, 12 watts
PL-PLUS D II, 12 watts
PM-8 II, 12 watts
Safety Agency Listings:
CE, NRTL-C
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SERIES II 15 AMP PowER CondItIonERS
PL-8 Series II
Additional Switched Outlet
Circuit Breaker
Light Switch
Dimmer Control
Power Switch
LED Rack Lights
PL-PLUS Series II
Circuit Breaker
Light Switch
Power Switch
Voltmeter
Dimmer Control
Additional Switched Outlet
LED Rack Lights
Voltmeter
PL-PLUS d Series II
Light Switch
Power Switch
Circuit Breaker
Dimmer Control
LED Rack Lights
Current meter
Additional Switched Outlet
PM-8 Series II
Light Switch
Voltmeter
Circuit Breaker Power Switch
Additional Switched Outlet
Rear of all
8 Switched Outlets
BNC Connector for Goosneck Light
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Furman Sound, LLC.
1997 South McDowell Blvd.
Petaluma, California 94954-6919 USA
Phone: 707-763-1010 Fax: 707-763-1310
111804-C
E-mail: [email protected]
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