P-1800 AR OWNER’S MANUAL
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P-1800 AR GUIDE DE L’UTILISATEUR
FRANÇAIS
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P-1800 AR MANUAL DEL PROPIETARIO
ESPAÑOL
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ALL CONTENT ©2009 FURMAN. ALL RIGHTS RESERVED. PRINTED IN CHINA.
P-1800 AR OWNER’S MANUAL
FURMAN P-1800 AR FEATURES 
•True RMS Voltage Regulation - A 15 amp ultra-low noise toroidal autoformer with microprocessor control
•SMP (Series Multi-Stage Protection) with EVS (Extreme Voltage Shutdown)
•LiFT (Linear Filtering Technology) with zero ground contamination
•Nine total regulated, filtered and protected AC outlets (three with “wall wart” spacing and Furman Secure Straps to hold bulky transformers in place)
•Very low stray magnetic field leakage
•Dimmable/Switchable true RMS digital ammeter and laboratory precise voltmeter
•Tri-color voltage range indicator (complements numerical voltage reading - even when viewed at a distance from the display)
•Front panel USB connector charges most portable media devices and cell phones
•BNC connector on the rear panel allows you to attach any standard (12VAC 0.5 amp) gooseneck lamp to illuminate the rear of your rack (Furman GN-I and GN-LED accessory gooseneck lamps (sold separately) are recommended for this application)
•15 amp (1800 watt) current capacity; output capacity 12 to 15 amps
•Robust 14awg. 10 foot AC cord
•Five year limited warranty
INTRODUCTION 
Thank you for purchasing a Furman Prestige Series Voltage Regulator/Power Conditioner, and congratulations on your choice. The Prestige Series P-1800 AR features Furman’s True RMS Auto Regulation, Series Multi-Stage Protection (SMP) circuit, and our exclusive Linear Filtering Technology (LiFT). Together, these technologies comprise precisely what our customers have grown to expect from Furman: uncompromised protection and purification. The P-1800 AR has been precisely engineered to more than meet the critical demands of recording studios, broadcast facilities, and discerning musicians alike.
The Furman P-1800 AR is intended to protect sensitive electronic equipment from problems caused by AC line voltage irregularities— brownouts or over-voltages that can cause audio tonal changes, digital equipment malfunction (such as loss of MIDI programs or other data), or, in extreme cases, permanent damage. It accepts input voltages over a wide AC voltage range and converts them to a steady, stable output of 120V, plus or minus five volts. Voltages approximately ±10% beyond that range may be converted to usable levels, depending on the requirements of the equipment. This stable voltage protects equipment and allows optimal performance. If you frequently move your rack to different locations, derive power from generators, use excessively long extension cords, travel internationally, or are in an area prone to brownouts, you will benefit from the use of a Furman P-1800 AR.
DESCRIPTION 
True RMS Voltage Regulation Technology
True RMS Voltage Regulation is designed around an ultra-low noise eight-tap toroidal autoformer. A microprocessor within the P-1800 AR monitors the incoming RMS voltage with each cycle, measuring the phase angle in time with the advancing cycle. Most commercial voltage regulators using multiple-tapped transformers switch taps at uncontrolled times. This creates voltage spikes and clicks that can leak into audio. When a voltage fluctuation requires correction by the P-1800 AR, True RMS Voltage Regulation advances a new tap with less stress and in turn avoids distortion to the AC waveform. Hysteresis in the P-1800 AR circuits avoids the unnecessary switching back and forth between the adjacent taps (or “chatter”) found in many commercial voltage regulators. If necessary, True RMS Voltage Regulation technology can switch taps as often as once each cycle and do so with a shorter recovery time than a commercial voltage regulator. In addition and unlike voltage regulators that employ ferroresonant transformers, the P-1800 AR is not sensitive to small errors in line frequency, making it ideal for use with generators.
The P-1800 AR has eight outlets on the rear panel and one convenience outlet on the front panel. All are functionally interchangeable. The outlets are regulated, surge-suppressed, and linearly filtered, making the unit a full-function power conditioner. The autoformer’s toroidal design assures minimal leakage of stray magnetic fields.
Note: P-1800 AR is for use with AC voltage only. DC voltages should never be applied. Also, it does not change or regulate line Frequency. The output frequency will always be the same as the incoming frequency.
SMP (Series Multi-Stage Protection) with EVS (Extreme Voltage Shutdown)
Furman’s SMP (Series Multi-Stage Protection) surge suppression virtually eliminates service calls and costly “down time”. 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 Furman’s SMP. With SMP, damaging transient voltages are safely absorbed, clamped, and dissipated. Your connected equipment is protected, while your P-1800 AR protects itself!
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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 trusted EVS (Extreme Voltage Shutdown) circuitry protects against catastrophic overvoltage conditions (such as all-too-frequent accidental connections to 208 or 240 VAC or an intermittent neutral) by shutting off the incoming power until the overvoltage condition is corrected and the power switch is reset.
LiFT (Linear Filtering Technology)
Furman’s Linear Filtering Technology (LiFT) reduces AC line noise in an even, linear manner across a very wide bandwidth, resulting in a lower noise floor. Traditional AC filter - conditioners have been designed for unrealistic laboratory conditions - whether multiple pole filters or conventional series mode, prior technologies 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 LiFT takes a different approach, ensuring optimal performance through linear filtering with no contamination, or leakage, to ground.
Additional Features
Additionally, the P-1800 AR offers a laboratory precision dual function digital meter that displays incoming voltage in 1-volt steps and performs as a RMS ammeter measuring current to the tenth of an amp. The voltmeter’s accuracy is ±1.5 volts and features a tricolor voltage range indicator. This informs the user whether voltage is in or out of a safe range. The ammeter accurately measures current draw for an instant analysis of system requirements.
The P-1800 AR is equipped with nine regulated outlets; a front panel convenience AC outlet and eight rear panel outlets. Three of the rear panel outlets are spaced to accommodate transformer plugs (wall warts) and feature Velcro™ “Secure Strap” tie loops to secure these plugs in place. All rear panel outlet banks are electrically isolated from each other to minimize cross-talk between components.
The P-1800 AR’s 15 amp capacity is supplied from a robust 14awg, 10 foot AC cord. A rear mounted BNC jack accepts any standard (12VAC 0.5 amp) gooseneck lamp for rear rack illumination.
SAFETY INFORMATION 
To obtain best results from your Furman P-1800 AR, please read this manual carefully before using.
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 cover. 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!
IMPORTANT SAFETY INSTRUCTIONS
(Please read prior to installation)
1.Please read and observe all safety and operating instructions before installing your P-1800 AR. Retain these instructions for future reference.
2.Your P-1800 AR should not be used near water – for example, near a bathtub, washbowl,
kitchen sink, laundry tub, in a wet basement, or near a swimming pool.
3.Do not place your P-1800 AR near high heat sources such as radiators, heat registers, stoves, or other appliances that produce extreme heat.
4.Your P-1800 AR should only be connected to a 120 VAC, 60Hz, grounded electrical outlet. Do not defeat the ground or change polarization of the power plug.
5.Route the AC power cord and other cables so 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 Furman conditioner. To prevent risk of fire or injury, damaged cords and cables should be replaced immediately.
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6.Clean your P-1800 AR with a damp cloth only. Do not use solvents or abrasive cleaners. Never pour liquid on or into the unit.
7.Your P-1800 AR 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.
•The unit has been exposed to rain or extreme 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.
8.Your P-1800 AR 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.
9.Do not attempt to service your P-1800 AR beyond what is described in this manual. All other servicing should be referred to qualified service personnel.
INSTALLATION 
Because of the toroidal transformer design, the Furman P-1800 AR 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.
OPERATION
Dimmable/Switchable Digital Voltage and True RMS Current Meter:
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 determined by the incoming AC source.
The Furman True RMS Current Meter constantly measures the total circuit AC load, with a typical tolerance of +/-0.5 amp. Because the meter features True RMS technology, the current readings are accurate regardless of load conditions (capacitive, inductive, or resistive).
To switch between voltage and current, press the button labeled “Line Voltage/Current”. To change the display intensity, hold this button down for two seconds to cycle through the 3 stages of brightness.
Voltage Range Indicator:
This tri-color Voltage Range indicator is located in the lower left corner of the digital voltage meter lens assembly. When the incoming AC voltage is within a capture range of 97-137V the tri-color indicator will be green (optimal), indicating the unit is in regulation. However, if the regulator encounters a temporary transient condition the indicator will turn amber (caution). This amber indication appears when there are excessive changes or sudden swings at the input (+/-10 volts). If the incoming voltage is outside the capture range (below 97V or above 137V) the indicator will turn red. Red warnings indicate the incoming voltage is far from optimal and beyond the capture range offering a constant 120V. In this condition, the P-1800 AR will continue to regulate from the last tap of the autoformer, providing an output voltage as close to 120V as possible (e.g. an input voltage of 92V would equate to 110V at output). When employing the P-1800 AR in mission critical applications where 120V is the primary concern, the red indication is invaluable.
Ultra-Low Resistance Magnetic Power Switch / Circuit Breaker:
Furman’s Prestige Series 15 amp capacity power switch / circuit breaker is specifically designed to stand up to the enormous high inrush current demands of many power amplifiers. Additionally, Furman magnetic circuit breakers are not sensitive to temperature, nor do they raise the AC impedance as do many less costly thermal breakers. If the 15 amp maximum RMS current capacity of the P-1800 AR is exceeded, the spring tensioned switch will immediately reset to the “Off” position. You will need to switch back to the “On” position once the problem is corrected (typically by eliminating one component), or until the RMS current does not exceed 12 amps - 1440 watts.
Total Current Capacity (maximum and minimum load):
The P-1800 AR can handle loads totaling up to 15 amperes as long as the input voltage is equal to or above 124 volts. For voltages
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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 P-1800 AR, not to each individual item.
Extreme Voltage Shutdown Indicator:
The Extreme Voltage LED indicator is normally off. It is located within the meter lens assembly directly above the blue voltage meters LED’s, though during normal use it will NOT be visible.
The Extreme Voltage indicator monitors a hazard common in the entertainment industry, as well as remote broadcast: wiring faults, such as accidental connection to 208VAC where 120VAC is expected, or an open series neutral from a 208 to 240VAC electrical service. The Furman EVS 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 the P-1800 AR, the Extreme Voltage indicator will illuminate to a bright red if the input voltage is above the extreme voltage cutoff. When this occurs, power will not be applied to the P-1800 PF R’s outlets. If the unit has been operating with an acceptable input voltage and subsequently that voltage exceeds 140V, it will shut off power to the outlets and the Extreme Voltage LED will light.
NOTE: If the mains power is above the high cutoff voltage and has caused the EVS circuit to remove power from the Furman’s 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.
Protection OK Indicator:
Although the Furman SMP circuit assures virtually maintenance 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 (such as a direct lightning hit in an outdoor application). In the rare instance that this occurs, the green “Protection OK” LED indicator (located to the lower right of the voltage meter) will not illuminate. If this happens, some level of protection from voltage surges will remain, but the Furman’s clamping voltage rating will be compromised. The unit must be returned to Furman.
USB Charger:
The Furman P-1800 AR’s USB charger provides an easy way to recharge many popular electronic accessories as well as cellular communication devices by simply plugging the re-charge cord into the front panel socket. Please note: as there are currently many standards for USB, some devices may not be compatible with our charger.
Rear BNC Connector:
The Furman P-1800 AR features 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 off with the rear light switch which is adjacent to the BNC connector.
Transformer Plug (“Wall Wart”) Secure Straps:
The Furman P-1800 AR features three rear panel AC outlets that are widely spaced for plug transformers (wall warts). Additionally, these may be secured for transport with the Velcro™ Secure Straps that are included in the product carton. Each strap must be first secured with the supplied Philips screw, and the Furman Secure Strap will tie the “wall wart“ (transformer) in place.
Isolated Outlet Banks:
The Furman P-1800 AR features eight rear-panel outlets in 2 isolated banks. If you are connecting digital and analog equipment to the P-1800 AR, it is recommended to connect the analog equipment to “Bank A” and digital equipment to “Bank B” (or vice-versa) to minimize electrical crosstalk.
TROUBLESHOOTING 
1.) Symptom: No power to the AC outlets; “Protection OK” indicator is not lit.
Possible Cause: Either the AC outlet to which your P-1800 AR is connected has no AC voltage present, or there has been damage to the unit’s circuitry.
Action Needed: Plug the P-1800 AR into an AC receptacle where a nominal 120 VAC is present. If the problem persists, the internal circuitry may be damaged and the unit will require factory service (see “Service” section below).
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2.) Symptom: Extreme Voltage indicator lit.
Possible Cause: Input voltage is above 140 volts causing power to the unit’s outlets to be shut down.
SERVICE
Questions or issues with your Furman unit should be directed to the Furman Customer Service Department, available 8AM-4PM Pacific Time at (707) 763-1010 or via email at techsupport@furmansound.com. If a unit requires service, it must have an RA number assigned from Furman’s Customer Service Department.
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 brief note giving your name, address, phone number and a description of the problem. Please display your RA number prominently on the front of all packages.
5 YEAR LIMITED WARRANTY 
SAVE YOUR SALES RECEIPT! The receipt is your proof of purchase and confirms the product was purchased at an authorized Furman dealer. It will need to be submitted to Furman in order to process any warranty claims.
Furman, a brand of Panamax Inc., warrants its P-1800 AR (the “Product”) as follows:
Furman 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 five years from the date of purchase. If the product does not conform to this Limited Warranty during the warranty period (as herein above specified), purchaser shall notify Furman of the claimed defects by calling 707-763-1010 or via email (techsupport@furmansound.com). If the defects are of such type and nature as to be covered by this warranty, Furman shall authorize purchaser to return the product to Furman headquarters. Warranty claims MUST be accompanied by a copy of the original purchase invoice or receipt showing the purchase date. Shipping charges to Furman headquarters must be prepaid by the purchaser of the product. Furman shall, at its own expense, furnish a replacement product or, at Furman’s option, repair the defective product. Return shipping charges back to purchaser will be paid by Furman.
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.
Furman does not warrant against damages or defects arising out of improper use or abnormal handling of the product, or against defects or damages arising from improper installation. This warranty shall be cancelable by Furman at its sole discretion if the product is modified in any way without written authorization from Furman or Panamax Inc. 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 Furman or Panamax Inc.
THIS WARRANTY IS EXCLUSIVE. The sole and exclusive obligation of Furman shall be to repair or replace the defective product in the manner and for the period provided above. Furman 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 Furman be liable for incidental, special, or consequential damages. This Limited Warranty states the entire obligation of Furman 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.
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SPECIFICATIONS
MAXIMUM OUTPUT CURRENT: 15 amps @ 124 volts
LINE CORD: Captive 3/14 AWG, 10 ft, black cord with NEMA 15 plug
BNC SOCKET WITH SWITCH FOR REAR RACK LAMP: 12VAC 500mA max (lamp not included)
IN REGULATION RANGE: 97 to 137 VAC
OVER VOLTAGE SHUTDOWN: 140 VAC nominal
SPIKE PROTECTION MODES: Line to neutral, zero ground leakage
SPIKE CLAMPING VOLTAGE: 188 VAC peak @ 3,000 amps
RESPONSE TIME: 1 nanosecond
MAXIMUM SURGE CURRENT: 6,500 AMPS
NOISE ATTENUATION: 10 dB @ 10kHz, 40 dB @ 100kHz, 50 dB @ 500kHz
DIMENSIONS: 19” W x 12.0” D x 1.745” H
WEIGHT: 15 lbs. (7 kg.)
POWER CONSUMPTION: (No load) 5 Watts
P-1800 AR FRONT PANEL
usb charger
convenience outlet
digital led voltmeter and status indicators
LINE VOLTAGE
CURRENT
METER DIM
voltage meter dimmer (hold to select brightness)
master power switch
AR
P-1800 AR REAR PANEL
isolated outlet bank a: wall wart spacing with secure straps |
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for large transformers |
bnc lamp connector |
bnc lamp power switch |
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10 ft. 3/14 AWG power cable |
isolated ac |
outlet bank a |
isolated ac outlet bank b |
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