AR-1215
AC LINE VOLTAGE REGULATOR
MODELS AR-1215, AR-1215J, AR-2306
VOLTAGE
REGULATORS
A R - 1 2 1 5 A C L I N E V O LTA G E R E G U L AT O R
Congratulations on your purchase of a Furman AR-1215, AR-1215J, or AR-2306 AC Line
Voltage Regulator. The AR-Series regulators
are designed specifically for any audio, video,
or computer rackmount system requiring clean,
filtered, and regulated AC power for optimum
operation.
AR-SERIES FEATURES
●
1
AR-1215 and AR-1215J provide nine
regulated, conditioned AC outlets—eight
on the rear panel and one on the front
●
AR-1215 and AR-1215J input capacity
is 15 A; output capacity is 12 to 15 A
●
AR-2306 provides eleven regulated,
conditioned AC outlets—ten on the
rear panel and one on the front
●
AR-2306 input capacity is 6 A;
output capacity is 5 to 6 A
●
Usable range for most equipment is an
additional 10% above and below the
ranges shown in the table below
●
Extreme overvoltage or undervoltage
causes instant shutdown, protecting
equipment
●
Extreme Voltage Shutdown indicator LED
●
Output In Regulation indicator
●
Ten-LED bargraph input voltmeter
●
Fast-acting user-accessible circuit breaker
protects against overload or shorts
●
Very low stray magnetic field leakage
●
On/off switch
●
Output voltage selector switch
(AR-1215J and AR-2306 only)
●
Compact, lightweight unit weighs
only 12 lbs. (5.5 kg)
SAFETY INFORMATION
To obtain best results from your Furman AR-1215 or
AR-2306, please be sure to read this manual carefully.
WARNING: 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. There are no user
serviceable parts inside. Refer servicing to qualified
personnel only.
The lightning flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated dangerous voltage within the
product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock.
IMPORTANT SAFETY
INSTRUCTIONS
PLEASE READ PRIOR TO INSTALLATION
1. Please read and observe all of the safety and
operating instructions before the AR-1215 or
AR-2306 is operated. Retain these
instructions for future reference.
2. The AR-1215 or AR-2306 should
not be used near water — for example, near a bathtub, kitchen sink,
in a wet basement, near a swimming pool, etc.
3. Do not place the AR-1215 or AR-2306 near
heat sources such as radiators, heat registers,
stoves, or other appliances that produce heat.
4. Route the power cord and other cables so that
they are not likely to be walked on, tripped
A R - 1 2 1 5 A C L I N E V O LTA G E R E G U L AT O R
over, or stressed. Pay particular attention to
condition of cords and cables at plugs, and the
point where they exit from the AR-1215 or AR2306. To prevent risk of fire or injury, damaged
cords and cables should be replaced immediately.
5. Clean the AR-1215 or AR-2306 with a damp cloth
only. Do not use solvents or abrasive cleaners.
Never pour any liquid on or into the unit.
6. When left unused for a long period of time, the
power cord of the AR-1215 or AR-2306 should
be unplugged from the outlet.
7. The AR-1215 or AR-2306 should be serviced
by qualified service personnel when:
a. The power supply cord or the plug has been
frayed, kinked, or cut.
b. Objects have fallen or liquid has spilled into
the unit.
c. The AR-1215 or AR-2306 has been exposed to
rain or other moisture.
d. The AR-1215 or AR-2306 does not appear to
operate normally or exhibits a marked change
in performance.
e. The AR-1215 or AR-2306 has been dropped,
or the enclosure damaged.
8. The AR-1215 or AR-2306 requires that a safety
ground be present for proper operation. Any
attempt to operate the AR-1215 or AR-2306
without a safety ground is considered improper
operation and could invalidate the warranty.
9. There are no user serviceable parts in the AR1215 or AR-2306. Refer servicing to qualified
service personnel only.
NOMINAL OUTPUT VOLTAGES VS.
INPUT “IN-REGULATION” RANGES:
Output
Accuracy
Model
Voltage
Setting
In-Regulation Range
±5V
AR-1215
120
97 to 141
±5V
AR-1215J
120
97 to 141
±4V
AR-1215J
100
80 to 122
±10V
AR-2306
220
174 to 264
±10V
AR-2306
230
181 to 276
±10V
AR-2306
240
190 to 288
NOTE: The three models in the AR-Series differ in
their nominal AC output voltages. Model AR-1215
produces 120 VAC. Model AR-1215J produces
either 100 or 120 VAC. Model AR-2306 produces
either 220, 230, or 240 VAC.
Where differences exist between models, information applicable to the AR-2306 is shown in the text of
this manual in brackets [ ].
FIRST: SELECT THE CORRECT VOLTAGE!
Before using your Voltage Regulator, be sure that if
there is an output voltage switch on the rear panel
(just above the cord, on Models AR-1215J and
AR-2306 only), it is correctly set for the AC voltage
required by your equipment. Each item of equipment
that you intend to power with the Voltage Regulator should have its required voltage indicated on it,
usually on the rear near the cord. If in doubt, consult
your dealer.
Furman Voltage Regulators are intended to protect sensitive electronic equipment from problems
caused by AC line voltage irregularities—brownouts
or overvoltages that can cause audio tonal changes,
digital equipment malfunction (such as loss of MIDI
programs or other data), or, in extreme cases,
permanent damage. They accept input voltages
over a wide AC voltage range (see table on page 2)
and convert them to a steady, stable output at the
desired standard voltage, plus or minus five [ten]
volts. Voltages approximately ±10% beyond that
range may be converted to usable levels, depending
on the requirements of the equipment. See graphs
on the back page.
The AR-1215 has eight [AR-2306 has ten IEC-320]
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A R - 1 2 1 5 A C L I N E V O LTA G E R E G U L AT O R
convenience outlets on the rear panel, and one on
the front panel. All are functionally interchangeable.
The outlets are regulated, spike-suppressed, and filtered against RFI with a 3-pole filter, making the unit
a full-function power conditioner. The AR-1215 has
no controls except an on-off switch. (The AR-1215J
and AR-2306 also have an output voltage selector
switch.)
Note: The AR-1215 and AR-2306 are for use with
AC voltage only. DC voltages should never be applied to them. Also, they do not change or regulate
line frequency. The output frequency will always be
the same as the incoming frequency.
MAXIMUM AND MINIMUM LOAD
The AR-1215 and AR-1215J can handle loads totalling up to 15 amperes as long as the input voltage
is equal to or above 124 volts (or 104 volts if using
AR-1215J set to 100 volt output). For voltages below
that level, its capacity must be derated at approximately 113 milliamperes per volt. (See graphs on
back page.) As a practical matter, therefore, to cope
successfully with worst-case brownout conditions,
you should plan your total load so that it does not
exceed 12 amps, or 1400 watts. Please note that
this refers to the aggregate power requirement of all
equipment plugged into the Voltage Regulator, not to
each individual item.
The AR-2306 can handle loads totalling up to 6
amperes as long as the input voltage is equal to
or above the selected output voltage. For voltages
below that level, its capacity must be derated at approximately 23 milliamperes per volt. (Again, please
see graphs on back page.) As a practical matter,
therefore, to cope successfully with worst-case
brownout conditions, you should plan your total load
so that it does not exceed 5 amps, or 1100 watts.
Please note that this refers to the aggregate power
requirement of all equipment plugged into the Voltage Regulator, not to each individual item.
NOTE: While there is no minimum load requirement for the AR1215 or AR-2306, you may
experience an audible mechanical hum coming
directly from the unit when the POWER switch
is on with nothing plugged in. This effect will
disappear as soon as you plug in any equipment
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AR-2306 rear view. NOTE: The three models in the AR-Series differ in their nominal AC output voltages. Model AR-1215
produces 120 VAC: AR-1215J produces either 100 or 120 VAC; and AR-2306 produces either 220, 230, or 240 VAC.
3
A R - 1 2 1 5 A C L I N E V O LTA G E R E G U L AT O R
drawing 40 to 50 watts total.
DEFINITIONS
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.
VOLTAGE REGULATION: The AC line voltage is a
number indicating the nominal electrical potential
that has been adopted in a region for powering
electrical equipment of all kinds. In most of North
America it is 117 volts AC; in Japan, 100 volts; and
in many other countries 220, 230, or 240 volts. The
actual voltage can fall below or rise above this nominal level due to brownouts, power cutbacks, use of
substandard wiring, and other causes. These deviations can cause poor performance or a malfunction.
A regulator is a device which, through use of a transformer, corrects the voltage deviation by stepping it
up or down so that it is as close as possible to the
nominal level.
EXTREME VOLTAGE PROTECTION
SPIKE: 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, nearby lightning
strikes, and other factors. Spikes (also called surges
or transients) are absorbed by special components
called MOV’s in the AR-series to provide safe voltage levels to protect your equipment.
To provide protection against a catastrophic error in
AC mains wiring, dangerously high voltages (those
over approximately 300V) will cause an internal fuse
to blow, but equipment plugged into the Voltage
Regulator will not be damaged.
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
physical 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 into AC lines by nearby radio transmitters,
certain kinds of lighting, electric motors, and others.
The AR-Series includes special circuitry to sense
over- and under-voltages and positively shut down
the output before possible damage is done. See
the Specifications on the back page for the exact
voltages at which shutdown occurs. When the input
voltage exceeds the limit, the power will cut off. It will
come back on automatically when the overvoltage
is removed as long as the voltage has not exceeded
300V [all models]. The red LED labelled EXTREME
VOLTAGE SHUTDOWN indicates the shutdown
condition. The output is also shut down for extremely
low input voltages.
FUSES AND CIRCUIT BREAKERS
There is one fuse and one circuit breaker in the
AR-Series. In the event that the unit appears to
be completely dead (neither the Power switch nor
any LED’s light up), unplug the power cord and the
load and check the breaker. If the circuit breaker is
tripped, a white button will pop up. Push it back in
to reset it. The purposes of these circuit protection
devices are:
1. A fast-blow 15 amp [6 amp] circuit breaker is
accessible at the rear panel without removing
the unit from the rack. This breaker will trip if the
unit’s 15 amp [6 amp] capacity is exceeded at
any time.
2. A fast-blow 1/4 amp fuse is located inside the
unit. This fuse will blow if the unit has been
connected to a voltage that is above the range
4
A R - 1 2 1 5 A C L I N E V O LTA G E R E G U L AT O R
of the Extreme Voltage Shutdown circuitry
(approximately 200 VAC for AR-1215 and AR1215J; approximately 400 VAC for AR-2306). To
replace it, the unit must be completely disconnected from all power and removed from its rack.
The six hex head screws and one Phillips head
screw holding the top cover must be removed.
The internal fuse is located in a holder on the
printed circuit board. Replace the fuse only with
the exact same type (1/4 fast blow).
INPUT VOLTAGE MONITORING
The row of ten LED’s at the left of the front panel
make up a meter that indicates INPUT VOLTAGE.
Only one LED will light up at a time. There are two
red LED’s at the endpoints. When lit, they indicate
that the input voltage may be above or below the
point where it can be restored to the selected nominal
output voltage (though it may still be restored to a usable level) but is not high or low enough to cause an
extreme voltage shutdown.
The AR-1215J and AR-2306, which have switchable
output voltages, also have multiple scales on the
Input Voltage meter corresponding to the selected
voltage. On the AR-2306, there are three scales,
with the top for 220V, the middle for 230V, and the
bottom for 240V.
OUTPUT VOLTAGE MONITORING
A green LED labelled OUTPUT IN REGULATION
indicates proper function (i.e., that the output voltage is
within ±5V [±10V] of the selected output voltage). Your
equipment will always work normally when this light is
on, and often will work satisfactorily even when it is off.
If you wish to monitor your AR-1215’s output voltage more precisely, you may want to use a Furman
PL-PLUS Power Conditioner and Light Module
in conjunction with it [use model PL-PLUS-E with
model AR-2306].
The PL-PLUS is the perfect complement to a Furman
Voltage Regulator to assist in rack power distribution.
5
It offers a 20-LED bargraph line voltage meter to monitor the incoming line (the Voltage Regulator output),
twin slide-out, swiveling lights with a dimmer control
for equipment illumination, and eight [ten] additional
outlets with their own spike and surge protection and
RFI / EMI filtering.
INSTALLATION
Because of their toroidal transformer design, Furman Voltage Regulators may be positioned near
most other equipment without fear that the other
equipment will be disrupted by leakage of a strong
50/60 Hz magnetic field. Nevertheless, suggested
rack locations would be either at the top or bottom.
As with any rackmount equipment, be sure to use
10-32 machine screws for mounting in the rack’s
tapped holes (this is not a metric size). In particular,
beware of 10-24 screws, which may fit if forced but
which will strip the threads. To avoid marring the
front panel finish, use plastic washers under the
screw heads.
DESIGN
The AR-Series uses a design based on an eight-tap
toroidal autoformer. The toroidal design assures
minimal leakage of stray magnetic fields, and, because of its high efficiency, a very compact size for
its rating. The Voltage Regulator’s circuitry monitors
the incoming line voltage with each cycle, comparing
it to an extremely precise voltage reference, accurate
to ±0.15%. If a voltage fluctuation requires that a
different tap be selected, the new tap is electronically
switched exactly at the zero-crossing, to avoid distorting the AC waveform. If necessary, it can switch
taps as often as once each cycle. Most commercial
voltage regulators using multiple-tapped transformers switch taps at uncontrolled times, thereby
creating voltage spikes and clicks that can leak into
the audio! Hysteresis in the switching circuits avoids
“chatter” or unnecessary switching back and forth between adjacent taps. Unlike those voltage regulators
that employ ferro-resonant transformers, Furman
Voltage Regulators are not sensitive to small errors
A R - 1 2 1 5 A C L I N E V O LTA G E R E G U L AT O R
in line frequency, making them ideal for use with
generators.
ONE LIMITED WARRANTY
Furman Sound, Inc., having its principal place of
business at 1997 South McDowell Blvd., Petaluma,
CA 94954 (“Manufacturer”) warrants its AR-1215 /
AR-2306 (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 one year 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 defective Product.
Return shipping charges back 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.
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 part of this Limited Warranty is determined to be
void or illegal, the remainder shall remain in full force
and effect.
SERVICE
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. 120 or 121, between 8
a.m. and 5 p.m. U.S. Pacific Time, or fax to (707)
763-1310. Please display your RA Number prominently on the front of all packages.
6
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SPECIFICATIONS
Output Current Rating:
AR-1215: 15 amperes for input voltages of 124V
(104V for AR-1215J in 100V mode) or higher;
derate at 113 mA per volt to a minimum of 12.3A.
AR-2306: 6 amperes for input voltages of 228V/238V/248V
(depending on Output Voltage switch setting) or higher;
derate at 23 mA per volt to a minimum of 4.9A.
“In Regulation” Ranges:
AR-1215 (and AR-1215J set to 120V):
provides regulation ±5V from 97V to 141V.
AR-1215J (set to 100V): provides regulation ±4V from
82V to 115V.
AR-2306: provides regulation ±10V in the following ranges:
174-264V (220 mode), 181-276V (230 mode), 190-288V
(240 mode).
Shutdown Range:
AR-1215 (and AR-1215J set to 120V): Below 75V or
above 150V.
AR-1215J: (set at 100V): Below 65V or above 135V.
AR-2306: Below 146V or above 279V (220 mode); Below
152V or above 287V (230 mode), Below 158V or above
300V (240 mode).
Voltmeter Accuracy:
AR-1215 (and AR-1215J set to 120V): ±5V.
AR-1215J (set to 100V) : ±4V.
AR-2306: ±10V.
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Spike Protection Modes:
Line to neutral, neutral to ground, line to ground.
Spike Clamping Voltage:
AR-1215/AR-1215J: Initial turn-on at 200V; TVSS rating
of 400 volts peak at 500 A, L-N, N-G, L-G (tested to UL1449).
AR-2306: Initial turn-on at 390 volts peak L-N; 680 volts
peak N-G, L-G.
Response time:
1 nanosecond.
Maximum surge current:
6,500 amps.
Maximum spike energy:
AR-1215/AR-1215J: 80 joules per node;
240 joules total.
AR-2306: 130 joules L-N, 160 joules N-G, L-G,
450 joules total.
Noise attenuation:
Transverse and common modes: 20 dB at 200 kHz, rising
to >40 dB, 1 to 100 MHz.
Dimensions:
1.75” H x 19” W x 8.5” D.
Weight:
12 lbs. (5.5 kg)
Furman Sound, Inc. • 1997 South McDowell Blvd. • Petaluma, CA 94954-6919 USA
Phone: 707-763-1010 • Fax: 707-763-1310 • Web: www.furmansound.com • E-mail: info@furmansound.com
Made in China
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