Fostex AP3060 User's Manual
Contents
1. mr Fig 1 1 NAMES OF THE CONTROLS AP3060 AP3090 8 i 2 Figs 3 3 1 Handle 8 Fuse 2 Output control knob CH1 CH2 9 AC input 3 Protect indicator 10 Speaker output 4 Clip indicator 11 Cooling fan 5 Output level indicator 12 Mode selector 6 Power switch STEREO MONO 7 Dust filter 13 Input CH1 CH2 2 FEATURES OF THE PRODUCT 1 2 3 4 5 6 7 Designed for EIA rack mounting 3U size panel Employing a highly efficient power supply circuit it is designed for large music power yet lightweight and very portable Output level indicator These LED s are for checking the output signal level and are lit over a 0 30dB range Rated power into a 40 load is output at 0dB Model AP3060 300W Model AP3090 450W Clip indicator This LED is lit when the output clips or the protection circuit is tripped Protection indicator Lighting of this LED indicates either that the amplifier interior temperature is dangerously high or the load is exceeding the rating and as a result supply voltage to the output stage is automatically lowered to suppress the output power Consequently when this LED is lit distortion will in crease due to drop in the amplifier output The input circuit employes balanced line A high pass filter can be installed inside as the high voltage line transformer is used in the output Functions explained below are prov2. SPECIFICATIONS Continuous rated output Output bandwidth range Reproduce freguency bandwith Input sensitivity Damping factor S N ratio Total harmonic distortion 200W 200W 8Q 300W 300W 4Q 6 O O W MONO 80 10 30kHz 8Q 20 30kHz 40 10 35kHz 0dB 1dB 1 23V 1dB 80 at rated output Better than 240 80 1kHz 9 7 d B IHF A 104dB 300W 300W 8Q 450W 450W 4Q 9 O O W MONO 82 10 30kHz 8Q 20 30kHz 4Q 10 35kHz 0dB 1dB 1 51V 1dB 80 at rated output Better than 240 80 1kHz 1 00 d B IHF A 107dB 0 1 0 1 Physical dimensions Fuse capacity 482 W x 132 H x 40 5 D na 482 W x 132 H x 40 5 D am 100VAC sT15A 120VAC T15A 220V V gt T6 3A 240V V T6 3A 16 8kg 100VAC gt T20A 120VAC T20A 220V V T10A 240V V T10A BLOCK DIAGRAM 6 CLIP INDICATOR SUPPLY VOLTAGE CONTROLLER TROL CH 1 RELAY CHANNEL 1 CHANNEL 1 MONO MONO INPUT PROTECT OUTPUT INDICATOR gt CHANNEL 1 PROTECTOR LOAD IMPEDANCE PEAK LEVEL ASO SENSOR INDICATOR CURRENT THERMAL RELAY SENSOR CONTROLLER STEREO MONO 30 0 dB SWITCH SUPPLY VOLTAGE VOLUME CHANNEL 2 CHANNEL 2 KONO INPUT PROTECT OUTPUT INDICATOR CHANNEL 2 PROTECTOR LOAD IMPEDANCE PEAK LEVEL ASO SENSOR INDICATOR CURRENT THERMAL RELAY SENSOR CONTROLLER 30 0 dB FAN MOTOR CONTROL
3. plugged into IN PUT CH1 L and INPUT CH2 R and the selector set to STEREO as Shown in Fig 4 input cable connectors are plugged into either the Cannon connector or phone jack The speaker cables are connected to the CH1 L and CH2 R SPEAKER OUTPUT terminals be careful to correctly match the speaker polarities In the monaural mode setup the input cable is plugged into INPUT CH1 only and the selector set to MONO as shown in Fig 5 the input cable connector is plugged into either the Cannon connector or phone jack The speaker cables are connected to the SPEAKER OUTPUT ter minals marked MONO to each red terminals of CH1 and CH2 be careful to correctly match the speaker polarities AIR FILTER CLEANING PRECAUTIONS If the amplifier front dust filter becomes clogged with dust and dirt after prolonged use normal amplifier performance cannot be expected and thus the filter should be removed for cleaning The filter is removed by first removing screws 1 3 as shown in Fig 6 If it is only slightly clogged suck the dust with a vacuum cleaner but if severely clogged wash it with diluted neutral detergent when thus water washed in stall the filter only after it is completely dry At reinstalling the filter after cleaning install it on the dual adhesive backing tape A shown in Fig 6 then Screw it down in reverse order 3 1 If the dual adhesive backing tape loses effect replace it with new tape 5
4. LER POWER SWITCH FUSE AC o POWER SUPPLY STABILIZED POWER SUPPLY PHYSICAL DIMENSIONS 7 10 Fostex PRO SOUND DIVISION FOSTEX CORPORATION 3 2 35 Musashino Akishima shi Tokyo Japan 196 Specifications subject to change without notice PRINTED IN JAPAN DEC 1990 8729000001 SG
5. Owner s Manual Model AP3060 AP3090 STEREO POWER AMPLIFIER Fostex SAFETY INSTRUCTIONS RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence ol uninsulated dangerous voltage within the product s en closure that may be of sufficient magnitude to constitute a risk of electric shock to persons WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOIS TURE SAFETY INSTRUCTIONS 1 2 Read Instructions AR the safety and operating instruc tions should be read before the appliance is operated Relain Instructions The safety and operating instructions should be retained for tuture reference Heed Warnings Ail warnings on the appliance and in the operating instructions should be adhered to Follow Instructions All operating and use instructions should be followed Water and Moisture The appliance should not be used near water for example near a bathtub washbowl kil chen sink laundry tub in a wet basement or near a swim ming pool and the like Carts and Stands The appliance should be used only with a cart or stand that is recommended by the manu f
6. acturer An appliance and cart combination should be moved wilh care Quick stops excessive force and uneven surfaces may cause the appliance and carl combination to overturn Wall or Cetling Mounting The appliance should be mount ed to a wall or ceiling only as recommended by the manu facturer Ventilation The appliance should be siluated so that ils location or position does nol interfere with ils proper venti lation For example the appliance should nol be s tualed on a bed sofa rug or similar surface Ihal may block Ihe ventilation openings or placed in a buit in installation such as a bookcase or cabinet that may impede the flow of air Ihrough the ventilation openings The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and mainte nance servicing instructions in the literature accompanying the apphance Heat The appliance shouid be situated away from heat sources such as radiators heat registers stoves or other appliances including amplifiers that produce heat Power Sources The appliance should be connected toa power supply only of the type described in the operaling instructions or as marked on the appliance Grounding or Polarization The precautions that should be taken so that ihe grounding or polarization means of an appiiance is not defeated Power Cord Protection Power supply cords should be touted so that
7. ided to secure stability and reliability of the amplifier 1 3 4 Forced air cooling is employed to allow stable perform ance under severe conditions over long hours of use The fan speed is automatically controlled depending on inter nal temperature of the amplifier To protect the output stage transistors area of safety operation such as load current heat sink temperature and load impedance are constantly checked and the various protection circuits triggered into operation if any harm ful condition occurs Even though the protection circuit is triggered it is restored to normal if the harmful condition is relieved The load impedance protection cir cuit is activated at below 20 When the power transformer is excessively heated the thermal protector inside the power transformer is trig gered but is automatically restored to normal when the temperature drops Output is cutoff to protect the speaker should DC or sub sonic components be generated in the amplifier output stage 3 CONNECTING METHOD Stereo mode Set mode selector to STEREO Set mode selector to STEREO Fig 4 Left Speaker Right Input Right Speaker Left Input Monaural mode Set mode selector to MONO Set mode selector to MONO Fig 5 Mono Input This amplifier can be switched to either the stereo or monaural mode switched between STEREO or MONO by the rear panel selector In the stereo mode setup input cables are
8. lease carefully read this manual for correct operation thus taking advantage of its full performance and result in many years of trouble free operation TABLE O F CONTENTS Safety instructions lt lt lt lt lt lt lt 1 Introduction 444444 eee eet ew teen eee 2 Notes on operation input connectors 3 1 Names of the controls ccc cece eee ee eee 4 2 Features of the product ee eee 5 3 Connecting method Stereo monaural 6 4 Air filter cleaning Precautions 7 5 Specifications LL kak aka kaka cee eee eee nes 8 6 Block diagram 444 444444 lt eens 9 7 Physical dimensions lt 444444 10 NOTES ON OPERATION Should dust and dirt accumulate on the amplifier front air intake filter it should be removed and cleaned Always switch off power when connecting or disconnecting the cables or operating the selector switch There will be no amplifier output for several seconds after switch on of power as the muting circuit will be in effect INPUT CONNECTORS The two inputs of this amplifier employ the XLR3 31 equiva lent connector and a 1 4 inch 3P phone jack and are wired in parallel Connector polarities are as follows 1 Ground 2 Hot 3 Cold NOTE For 120V models 3 is Hot 2 is Cold PHONE CANNON BALANCED HOT 3 a
9. they are not likely lo be walked on or pinched by items placed upon or against them paying particutar attention to cords al plugs convenience recep tacles and the point where they exit rom the appliance Cleaning The appliance should be cleaned only as recommended by the manufacturer Nonuse Periods The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time Object and Liquid Entry Care should be taken so that objects do not fall and liquids are not spilled into the enc losure through openings Damage Requiring Service The appliance should be serviced by qualified service personnel when A The power supply cord or the plug has been damaged or B Objects have fallen or liquid has been spilled into the appliance or C The appliance has been exposed lo rain or D The applance does not appear to operate normally or exhibits a marked change in performance or The appliance has been dropped or the enctosure damaged Servicing The user should not attempt to service the appliance beyond that described ii Ihe operating instruc lions All other servicing should be reterred to qualified service personnel m 1989 Sep INTRODUCTION Models AP3060 AP3090 are superior cost performance large output power amplifiers In commercial applications they are reliable durable and stable designed for long hour applications Before operating it p
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