Furman Sound AR-15 Power Supply User Manual
Contents
1. 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 substan dard wiring and other causes These devia tions can cause poor performance or a mal function 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 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 du ration the energy they contain can be consid erable enough to damage sensitive solid state components in audio and computer equipment Spikes can also foul switch contacts and de grade wiring insulation They are an unavoid able component of electric power They are caused unpredictably by electric motors switch ing 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 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 physi2. Furman Sound LLC 1690 Corporate Circle e Petaluma CA 94954 6919 USA Phone 707 763 1010 Fax 707 763 1310 Web www FurmanSound com E mail info furmansound com 12117 04 6 Made in China
3. date this is not necessary if the Warranty Regis tration 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 IM PLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PUR POSE 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 im proper installation against defects in products or components not manufactured by Manufac turer or against damages resulting from such non Manufacturer made products or compo nents This warranty shall be cancelable by Manufacturer at its sole discretion if the product is modified in any way without written authori zation 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 def
4. AR 15 AC LINE VOLTAGE REGULATOR AND POWER CONDITIONER FURMAN Congratulations on your purchase of a Furman AR 15 AC Line Voltage Regula tor Power Conditioner The AR Series regulators are designed specifically for any audio video or computer rackmount system requiring clean filtered and regu lated AC power for optimum operation AR 15 FEATURES e Provides nine regulated conditioned AC outlets eight on the rear panel and one on the front e Series Multi Stage Protection Plus SMP with extreme voltage shutdown EVS e LiFT Linear Filtering Technology with zero ground contamination e Eight rear panel outlets and one front panel outlet 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 e Extreme Voltage Shutdown indicator LED e Output In Regulation indicator e Ten LED bargraph input voltmeter e Fast acting user accessible circuit breaker protects against overload or shorts e Very low stray magnetic field leakage e Input capacity is 15 A output capacity is 12 to15A SAFETY INFORMATION To obtain best results from your Furman AR 15 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 cov ers There are no user serviceable parts inside Re
5. 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 Protection OK Indicator Although the Furman SMP circuit assures virtually 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 voltage rating will be compromised The unit must be returned to Furman Sound or an authorized Furman Service center for repair 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 cir cuit 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 Afast blow 15 amp circuit breaker is acces sible at the rear panel without removing the unit from the rack This b
6. cal 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 Because noise occurs at higher frequencies than the 50 or 60 Hz AC line it can be effective ly reduced through use of low pass filtering THREE YEAR LIMITED WARRANTY Furman Sound LLC having its principal place of business at 1690 Corporate Circle Petaluma CA 94954 Manufacturer warrants its AR 15 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 work manship 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 war ranty 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
7. display your RA Number prominently on the front of all packages SPECIFICATIONS Spike Protection Modes Line to neutral zero ground leakage Spike Clamping Voltage 188 Vpk 3 000 amps 133 VAC RMS tested to UL 1449 6 000 Vpk 3 000 amps Response time 1 nanosecond Maximum surge current 6 500 amps Voltmeter Accuracy 45V In Regulation Ranges AR 15 Il Provides regulation 5V in 120V mode from 97 to 137V Noise attenuation AR 1215 Output Voltage Functional Range R fo Q Regulation Range yd 3 8 umopinys a eyoA YIH Output Volatge o Se Low Voltage Shutdown to 70 80 90 100 110 120 130 140 150 160 Input Voltage AR 1215 Output Current Capability Available Output Current 70 80 90 100 110 120 130 140 150 160 Input Voltage 10 dB 10 kHz 40 dB 100 kHz 100 dB 10 MHz Linear attenuation curve from 0 05 100 ohms line impedance Shutdown Range Above 137 VAC typically Dimensions 19 W x 11 63 D x 1 75 H 48 26 x 29 54 x 4 45 cm Weight 14 5 Ibs 6 58 kg Current Rating The AR 15 Il is capable of 15 amps for input voltages of 124V 104V in 100V mode or higher derate at 113 mA per volt to a minimum of 12 3A Three Year Limited Warranty The AR 15 is protected by a limited three year warranty covering defects in materials and workmanship FURMAN
8. ective 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 Manufac turer 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 re pair must have a Return Authorization RA Number To get an RA Number please call the Furman Service Department 707 763 1010 ext 2370 or 2377 between 8 a m and 5 p m U S Pacific Time or fax to 707 763 1310 Please
9. esis in the switching circuits avoids chatter or unnec essary switching back and forth between adja cent taps Unlike those voltage regulators that employ ferro resonant transformers Furman Voltage Regulators are not sensitive to small errors in line frequency making them ideal for use with generators MAXIMUM AND MINIMUM LOAD The AR 15 can handle loads totalling up to 15 amperes as long as the input voltage is equal to or above 124 volts For voltages below that level its capacity must be derated at approxi mately 113 milliamperes per volt See graphs on back page As a practical matter therefore to cope successfully with worst case brown out 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 ag gregate power requirement of all equipment plugged into the Voltage Regulator not to each individual item NOTE While there is no minimum load require ment for the AR 15 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 sometimes disappear as soon as you plug in any equipment drawing 40 to 50 watts total DEFINITIONS 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
10. fer 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 danger ous 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 15 is operated Retain these instructions for future reference 2 The AR 15 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 15 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 over or stressed Pay particular at tention to condition of cords and cables at plugs and the point where they exit from the AR 15 To prevent risk of fire or injury dam aged cords and cables should be replaced immediately 5 Clean the AR 15 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 15 should be un plugged from the outlet 7 The AR 15 should be serviced by qualified service personnel when a The power supply co
11. filter conditioners have been designed for unrealistic laboratory conditions Prior technologies could actu ally 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 Furman s SMP with LiFT takes an other approach ensuring optimal performance through linear filtering and no leakage to ground With this exclusive filtration technol ogy all connected equipment will be free of noise and contamination and will operate at optimum performance levels 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 145 150V it will shut off power to the outlet and the Extreme Voltage LED will light NOTE If the mains power is
12. l are functionally interchangeable The outlets are regulated surge suppressed and linearly filtered making the unit a full function power conditioner The AR 15 has no controls except an on off switch and the switch for the optional rear rack light Note The AR 15 is for use with AC voltage only DC voltages should never be applied to them 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 Plus Traditional surge suppression rely on circuits that 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 No sacrificed parts no service calls no down time 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 This unprecedented level of protection is only available with Furman s SMP technol ogy Additionally Furman s trusted over volt age 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 LiFT Linear Filtering Technology Unfortunately traditional AC
13. lator output INSTALLATION Because of their toroidal transformer design Furman Voltage Regulators may be posi tioned 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 de sign assures minimal leakage of stray magnetic fields and because of its high efficiency a very compact size for its rating The Voltage Regula tor 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 Hyster
14. rd or the plug has been frayed kinked or cut b Objects have fallen or liquid has spilled into the unit c The AR 15 has been exposed to rain or other moisture d The AR 15 does not appear to operate normally or exhibits a marked change in performance e The AR 15 has been dropped or the enclosure damaged 8 The AR 15 requires that a safety ground be present for proper operation Any attempt to operate the AR 15 without a safety ground is considered improper operation and could invalidate the warranty 9 There are no user serviceable parts in the AR 15 Refer servicing to qualified service personnel only Voltage Regulation Furman Voltage Regulators are intended to protect sensitive electronic equipment from problems caused by AC line voltage irregu larities 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 and convert them to a steady stable output at the desired standard voltage plus or minus five volts Voltages ap proximately 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 See graphs on the back page The AR 15 has eight outlets on the rear panel and one convenience outlet on the front panel Al
15. reaker will trip if the unit s 15 amp capacity is exceeded at any time 2 Afast 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 of the Extreme Voltage Shut down circuitry To replace it the unit must be completely disconnected from all power and removed from its rack The six hex head screws and two Phillips head screws 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 volt age though it may still be restored to a usable level but is not high or low enough to cause an extreme voltage shutdown OUTPUT VOLTAGE MONITORING Agreen LED labelled OUTPUT IN REGULATION indicates proper function i e that the output volt age is within 5V 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 The AR 15 offers a 10 LED bargraph line voltage meter to monitor the incoming line the Voltage Regu
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