Transcript
www.maplin.co.uk
Prosound 800, 1000, 1600 Professional Power Amplifier Manual
www.maplin.co.uk
Unpacking and Inspection Carefully unpack the unit. If it appears damaged in any way, return it to the dealer it was purchased from in its original packaging. Maplin cannot accept any responsibility for damage arising from the use of nonapproved packaging.
Service All ProSound products are thoughly examined and tested before leaving the factory, and if a correctly used will give many years of excellent service. However, if a problem arises, proceed as follows: A) Contact the retailer from whom the unit was purchased and describe the symptoms of the fault.
IF YOUR AMP STOPS WORKING ; • Turn volume to zero on both channels • Check all connections (input and output, at both ends of cable) • Check status lights on front panel Status Power LED is off
Problem No mains or blown fuse
Protect LED is on
Outputs short circuit, or low impedance load
Temp LED is on
Amp is overheating
Bridge LED is on
Amp is in bridge mode with stereo outputs in use
Cure Check mains connections, check switch set to ‘on’ (at socket & amp), check mains breaker or RCD, replace fuse (See manual for IMPORTANT SAFETY INFORMATION) Check all output connections and total speaker impedance. For stereo mode, minimum 4 per channel, for bridge mode minimum 8 . When problem is cleared press RESET button. DO NOT ATTEMPT TO HOLD THE RESET BUTTON IN TO DEFEAT ITS PURPOSE ! Ensure vents are clear, with free airflow front & rear. Ensure signal is not clipped at amp input or source output. Amp will resume normal operation after 3-5 minutes. Use bridge output only (minimum 8 ) in bridge mode
• Disconnect from mains before changing fuse • Replace fuse only with same type and rating • If problems persist contact a qualified service agent • READ THE MANUAL !
B) If the retailer cannot help, return the equipment to the national distributor for your country. Use the original packaging to protect the product from damage. Include a note with the equipment stating your name and address, details of the problem, Date Code, date and place of purchase. The unit does not contain any user serviceable parts. For details of spares, accessories and other products, contact you local retailer. In the event of any difficulty contact ProSound directly via www.maplin.co.uk
Compliance This equipment is designed to comply with the following standards: BS EN55103-1:1996 BS EN55103-2:1997 BS EN60065:2002
1. All electrical and electronic equipment without batteries WEEE Directive & Product Disposal
At the end of its serviceable life, this product should not be treated as household or general waste. It should be handed over to the applicable collection point for the recycling of electrical and electronic equipment, or returned . to the supplier for disposal.
2. electrical and electronic equipment that are supplied with batteries (including internal batteries) WEEE Directive & Product Disposal At the end of its serviceable life, this product should not be treated as household or general waste. It should be handed over to the applicable collection point for the recycling of electrical and electronic equipment, or returned to the supplier for disposal.
Internal / Supplied Batteries This symbol on the battery indicates that the battery is to be collected separately.This battery is designed for separate collection at an appropriate collection point.
3. Batteries Notice to customers This symbol on the battery indicates that the battery is to be collected separately. The following apply only to users in European countries. This battery is designed for separate collection at an appropriate collection point. Do not dispose of as household waste. For more information, contact the retailer or local authorities in charge of waste management.
Malin Electronics constantly seeks ways to enhance our products, and improvements take place continually. Whilst every effort is made to produce up to date literature, Malin Electronics limited reserve the right to alter specifications without prior notice. -9-
Amp care bullet points.
TECHNICAL SPECIFICATION Model 800 Rated Output Power (RMS) Stereo mode, 2 x 8Ω 150W ×2 load Stereo mode, 2 x 4Ω load
2 x 300W
Bridge mode, 1 x 8Ω load
400W x 1
Max power Frequency range THD Frequency response RL = 8Ω, Po = 1 W Channel separation S/N: 20 Hz-20 kHz Damping factor , RL= 8Ω, 1 kHz Input sensitivity at rated power Input impedance
2 x 500W
Rear panel INPUT
500W x 1
800W x 1
5. Checks the mains supply in the venue ; use a mains checker e.g. Maplin product WD53H 6. Ensure your amp, speakers and all cables are free from damage 7. Protect your amp from moisture, smoke/fog machines and glitter cannons 8. Make and check all connections before you switch on 9. Set amp volume to ‘0’ at switch on. Slowly turn up, checking all speakers are working. If there are problems turn the amp off and resolve them
Reset switch
1. Prevent airflow to your amp ; ventilation is required front and rear
3 x Speakon
Power ON
1 x blue LED
Protect engaged
1 x red LED
Over temperature
1 x Orange LED
Signal Clip
2 x Green LED
Signal level
2 x VU Meters
Bridge mode
1 x green LED
4. Send a clipped or overdriven signal from your mixer or source to the amp 5. Store your amp or speakers in a damp environment 6. Overload mains sockets ; Never run more than 1500W of amplifiers, lights or other electronic equipment from one plug socket 7. Connect 2 amp channels, or 2 different amps to one speaker
230 V, 50 Hz (Europe) 240V, 50Hz (Australia) 485(w)×88(h)×400(d)mm (inc. handles) 19×2U×9 11.8kg
2. ‘Daisy chain’ speakers. Run a maximum of 1x4 Ohm speaker or 2x8 Ohm speaker per amp channel. 3. Run amplifiers with the clip or limit lights on constantly
Over-temperature, short circuit, output DC, high frequency and over load protection. Variable speed brushless fan 120 V, 60 Hz (USA & Canada)
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3. Listen to your sound ; if it’s distorted, reduce gain, volume or both
DO NOT
OUTPUT
Dimension Weight
1. Read the manual ; understand the operation, limitations and safety instructions before using the product
2 x channel level knob
2 x XLR (balanced)
Cooling AC Power supply (factory set)
DO
4. Use adequate amplification and speakers for your needs
Stereo/Bridge mode switch 2 x &quarter; inch Jack (unbalanced)
Amplifier protection
Amp care bullet points.
2. Use good quality cables of the correct type, in the correct sockets
30KΩ／balanced, 15KΩ／unbalanced POWER switch
Controls
Status Indicators
2 x 400W
1600 250W × 2
800W max@8Ω 1000W max@8Ω1600W max@8Ω 20 Hz - 20kHz >0.5% >0.1 % 0 dB, +0.5 dB, -1 dB f = 20Hz-20kHz ≥70 dB >90 dB ≥200 0dBu
Front panel
Connections
1000 200W × 2
13.5kg
8. Short circuit or cross-connect an amps inputs or outputs FOLLOW THE SIGNAL PATH ! • Source output to mixer/preamp input (shielded signal cable), • Mixer/preamp output to power amp input (shielded signal cable), • Power amp output to speaker input (unshielded speaker cable).
15.8kg
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TROUBLESHOOTING
IMPORTANT SAFETY INSTRUCTIONS INSTRUCTIONS PERTAINING TO A RISK OF FIRE, ELECTRIC SHOCK OR INJURY TO PERSONS
WARNING - Using electric product, basic precautions should always be followed, including the following: 1. Read all the SAFETY INSTRUCTIONS before using the product. 2. To reduce the risk of injury, close supervision is necessary when the product is used near children. 3. Do not use this product near water - for example, near a bathtub, washbowl, kitchen sink, in a wet basement or near a swimming pool or the like. 4. This product is capable of producing sound levels that could cause permanent hearing loss. DO NOT operate for a long period of time at high volume or at a level that is uncomfortable. If you experience any hearing loss or ringing in the ears, you should consult an audiologist. 5. This product should be located so that its location or position does not interfere with its proper ventilation. 6. This product should be located away from heat sources such as radiators, heat registers or other products that produce heat. 7. The product should be connected to a power supply only of the type described on the operating instructions or as marked on the product. Always ensure that a good quality mains lead is used applicable for your country. The following wiring convention is used in all product mains leads, and must be strictly observed: Green & Yellow = Earth. Brown = Live. Blue = Neutral. IMPORTANT: THIS UNIT MUST BE EARTHED! 8. This product may be equipped with a polarized line plug (one blade wider than the other). This is a safety feature. If you are unable to insert the plug into the outlet, contact an electrician to replace your obsolete outlet. DO NOT defeat the safety purpose of the plug. 9. If the mains fuse need replacing, DISCONNECT THE PRODUCT FROM THE MAIN SUPPLY. The fuse is below the mains IEC socket, an must be replaced with a fuse of the type and rating stated on the rear panel. If a replacement fuse fails immediately, contact your local service agent. DO NOT replace with a higher value. 10. The power-supply cord of the product should be unplugged from the outlet when left unused for a long period of time. When unplugged the power-supply cord, DO NOT pull on the cord, but grasp it by the plug. 11. Ensure the mains isolation switch is readily accessible when the product is in use. 12. Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings. 13. The product should be serviced by qualified service personnel when: A. The power-supply cord or the plug has been damaged; or B. Object have fallen, or liquid has been spilled into the product; or C. The product has been exposed to rain; or D. The product does not appear or operate normally or exhibits a marked change in performance; or E. The product has been dropped or the enclosure damaged. 14. DO NOT attempt to service the product beyond that described in the user-maintenance instructions. All other serving should be referred to qualified service personnel. 15. WARNING - DO NOT place objects on the product’s power cord or place it in a position where anyone could trip over, walk on or roll anything over it. DO NOT allow the product to rest on or to be installed over power cords of any type. Improper installations of this type create the possibility of fire hazard and/or personal injury.
FAULT No sound (Power LED off)
PROBLEM AC supply not connected or switched off. Blown fuse
No sound (Power LED on)
No input, or input too low
No sound (Protect LED on) No sound (Temp LED on) Hum or buzz is audible
Level controls set too low Speakers faulty or not connected Speaker outputs short circuited, or low impedance load connected. Amp has overheated
Noise from AC supply is being picked up in the signal path There is an earth problem
Distortion audible
is
Excessive signal level somewhere in signal chain. Damaged cables
Sound cuts out or is intermittent
or
poor
quality
Damaged or poor quality cables or connectors, connectors not properly inserted, amp overheating
SAVE THESE INSTRUCTIONS
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SOLUTIONS Check AC connections and switches. Check and replace fuses at plug and IEC socket. USE ONLY SAME TYPE AND RATING ! Check input is connected, and VU meters are showing adequate signal present. Increase level controls Check speakers and speaker connections Check all output connections, and check speaker load total impedance. Press reset button when problem is cleared. Turn levels to minimum and allow to cool for 5 minutes. Check front and rear vents are not blocked, check input level is not causing clip lights to illuminate. Use good quality, shielded signal cables and ensure they are kept away from AC power cables and other AC powered equipment. Use a mains tester to ensure the AC outlet has a good earth. Power connected equipment (e.g mixer and amp) from the same AC outlet where possible. Use the VU meters to ensure the input level to the amp is at the correct level. Check levels at mixer or source Use only high quality cables of the appropriate type, protect them from damage and regularly check connections. Check all cables and connections, refer to above sections regarding distortion and temp warning light.
9. AC socket. Connect the supplied AC power lead here. Ensure the correct AC supply is used, as stated on the rear panel. 10. AC Fuse. The AC power fuse is located in the drawer above the AC socket. Should the fuse fail, replace only with the same type and rating. DO NOT replace with a higher value. If a replacement fuse fails immediately, contact a qualified Service Engineer. Disconnect the amplifier from the AC supply before attempting to change the fuse.
Wiring Conventions in ProSound Power Amps Balanced XLR ; Pin 1=Signal ground. Pin2=IN phase signal . Pin 3=OUT phase signal. Unbalanced XLR ; Pin 1= Signal ground. Pin2= Signal psoitive. Pin 3=Signal ground (common with 1). ¼” TRS balanced jack ; Tip=IN phase signal . Ring=OUT phase signal. Sleeve=Signal ground. ¼” unbalanced jack ; Tip=Signal Positive. Sleeve=Signal ground. Speakon ; 1+=Speaker positive. 1-=Speaker negative. 2+=Common with 1+. 2-=Common with 1-.
Prosound 800, 1000, 1600 Professional Power Amplifier Manual
INTRODUCTION The PROSOUND series of amplifiers are fully featured rack mount professional power amps, designed to provide high quality, reliable performance for all professional applications from live bands to club installations.
MAIN FEATURES • Class AB design for high reliability and low distortion • Cooling path is designed to prevent dust and dirt build up inside the amplifier, preventing PCB damage and maintaining maximum cooling effect for greater reliability in operation • Variable speed, brushless fan to improve cooling, reduce noise and increase fan life. • Comprehensive protection circuitry protects the amp from over-current, short circuit, over-temperature, DC and high frequency problems to prevent down time for repairs. • Over-engineered power supplies for improved depth and dynamic response.
INSTALLATION GUIDELINES • Do not use these amplifiers in damp or high humidity environments. Do not use outdoors, or anywhere where liquids could fall or splash onto the amplifier. • Ensure the amp is adequately ventilated, with free airflow to the front and rear panels. Keep away from other heat sources. If the amps are mounted in a rack with other amps, ensure there is adequate cool air flow front and rear. Note that air is drawn in through the back panel, and exhausted through the front panel. • NEVER cover the amplifiers, as they may overheat. • Prosound power amplifiers are designed to fit standard 19” racks, with a 2U height and 17” depth. We recommend the use of rear rack supports, especially if the rack is to be mobile. Use shakeproof washers or threadlock adhesive to prevent mounting bolts becoming loose in transit. • Ensure that the AC power supply is correct for your amplifier. The required AC supply is stated on the rear panel next to the AC power input. • Ensure that you use the correct type of mains lead for your equipment and country. This must be free from damage, and easily accessible during use. • Keep away from magnetic recording media (tape, mini disc, hard drive etc). Power amps produce an electromagnetic field, which could affect stored files. -6-
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OPERATION
9. Bridge LED. This LED illuminates to show that mono bridge mode has been selected on the rear panel. Channel A level only is active, and speaker loads should be connected for bridge mode operation as described below.
Front panel features
10. Clip LED (one per channel). This illuminates when the input signal is clipping, or within 3dB of clipping. In normal use this should illuminate briefly only on signal peaks. If it illuminates constantly, or most of the time reduce the input signal level. 11. Power LED. This illuminates to show the amplifier is connected to AC power and switched on. When the amplifier is switched off this will slowly dim and extinguish. Rear panel features
1. Exhaust vent. This vent must be kept free from obstruction, to allow hot air drawn through the amplifier to exit. During use warm air will blow from this vent. 2. Channel A level (volume) control. In stereo mode operation this controls the amplifiers power output on Channel A. In bridge mode this controls the amplifiers bridged output. We recommend setting this to maximum during use to give best headroom and dynamics. Overall level should be controlled from your mixer or audio source. 3. Power switch. This switch turns the amplifier on. When switched to ‘OFF’, the internal circuit is isolated from the AC supply.
1. Channel A XLR input socket. This accepts line level balanced or unbalanced signal. Use this input for Channel A in stereo mode, or for mono bridge mode operation.
4. Channel B level (volume) control. In stereo mode operation this controls the amplifiers power output on Channel B. In bridge mode this control is inactive and should be set to zero. We recommend setting this to maximum during stereo operation to give best headroom and dynamics. Overall level should be controlled from your mixer or audio source.
2. Channel A TRS jack input socket. This accepts line level balanced or unbalanced signal. Use this input for Channel A in stereo mode, or for mono bridge mode operation.
5. VU meter (one per channel). This meter shows the level of input signal, and will fluctuate during use with signal level. The output level of your mixer or audio source should be set so that the needle swings into the red zone only on signal peaks. If the needle is usually in the red zone, the input level should be reduced at the source to prevent distortion and overheating. 6. Reset button. If the amplifier output is short circuited, or a low load impedance is connected, the ‘Protect’ LED (7) will illuminate and amplifier output will be shut down. If this happens, check that the outputs are properly connected to a suitable load, using good quality, undamaged cables. Turn the volume controls to zero, and press the reset button. The amplifier should return to normal operation. NOTE ; If the amplifier keeps returning to protect mode, check all connections and speaker impedances. If the amplifier will not operate when correctly connected to a suitable load contact a qualified Service Engineer. DO NOT attempt to hold the reset button in to defeat the protection. Serious damage could occur. 7. Protect LED. When this LED illuminates, the onboard protection has cut in, disabling the amplifier to protect it from fault conditions. If this illuminates, turn the amplifier off and check all connections and load impedance. 8. TEMP LED. When this LED illuminates, the onboard over temperature protection has cut in, disabling the amplifier to protect it. This will occur if insufficient ventilation is available, or the amp is being overdriven. If this illuminates, turn the level controls to miniumum and check ventilation to front and rear. The amplifier will return to active mode after a few minutes to cool down. When restarting the amplifier, check the input signal levels using the VU meters, as described in 5 above. -4-
3. Channel B XLR input socket. This accepts line level balanced or unbalanced signal. Use this input for Channel B in stereo mode. This input is not used in bridge mode. 4. Channel B TRS jack input socket. This accepts line level balanced or unbalanced signal. Use this input for Channel B in stereo mode. This input is not used in bridge mode. NOTE ; Always use good quality shielded cables for all signal connections. Keep signal cables away from speaker cables, AC power cables or other high current carrying cables. 5. Mode switch. This switch can be set to Stereo (Channel A and channel B active and independent) or Bridge (amplifier works as a single mono amplifier) mode. 6. Channel A speaker output socket (Speakon). Connect speakers with a total impedance of not less than 4 ohms to this socket when in stereo mode only. The output level is controlled by the Channel A volume control on the front panel 7. Channel B speaker output socket (Speakon). Connect speakers with a total impedance of not less than 4 ohms to this socket when in stereo mode only. The output level is controlled by the Channel B volume control on the front panel 8. Bridge mode speaker output socket. Connect speakers with a total impedance of not less than 8 ohms to this socket when in bridge mode only. The output level is controlled by the Channel A volume control on the front panel. NOTE ; Use low resistance, unshielded high power speaker cables to connect the amplifier to your speakers. Keep the cables as short as is practical, and keep them away from the input signal cables -5-
