PS3402 Power SourceTM Stereo Power Amplifier Operation Manual COPYRIGHT © 2001 SOUNDTECH UNAUTHORIZED REPRODUCTION IS A VIOLATION OF APPLICABLE COPYRIGHT LAWS PS3402 Power SourceTM 2 Channel Digital Power Amplifier Table Of Contents 1 2 3 4 5 6 7 8 Introduction......................................................................................... Important Safety Instructions............................................................. Warranty Information.......................................................................... Panel Description............................................................................... Connecting Your System................................................................... System Hookup Diagram................................................................... Block Diagram.................................................................................... Specifications...................................................................................... 2 3 4 5-6 7-10 11 12 13 I Introduction The SoundTech PS3402 Power SourceTM is a high quality power amplifier featuring state-of-the art performance designed for professional sound reinforcement and installation use. The PS3402 is a stereo digital power amplifier that can also be used for high level monophonic performance by making use of the bridge mode. A distinguishing feature of the Power SourceTM Series Amplifiers is the Digital switching power supply that makes high powered performance with extremely low weight possible. The PS3402 Power SourceTM features oversized high efficient heat sinks in a wind tunnel cooling system with a variable speed fan for trouble free operation under the most adverse conditions. In addition, PS3402 Power SourceTM has attractive front panel controls with a full complement of LED's to monitor functions and performance level conditions. While providing powerful, accurate and reliable performance along with outstanding value, your SoundTech PS3402 Power SourceTM power amplifier has been designed for many years of dependable service. Please take the time to read this manual before operation so that you fully understand the features and correct use of this exceptional product. 2 II Important Safety Instructions 1. Read Instructions- All the safety and operating instructions should be read before the amplifier is operated. 2. Retain Instructions- The safety and operating instructions should be retained for future reference. 3. Heed Warnings- All warnings on this amplifier and in the operating instructions should be adhered to. 4. Follow Instructions- All instructions should be followed. 5. Water and Moisture- This amplifier should not be used near water- for example, near a bathtub, sink, laundry tub, in a wet basement, near a swimming pool, etc. 6. Heat- This amplifier should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances that produce heat. 7. Power Sources- This amplifier should be connected to a power supply only of the type described in the operating instructions or as marked on the amplifier. If you are not sure of the type of power supply to your home, consult an electrician or local power company. 8. Polarization- If the amplifier is equipped with a polarized alternating-current line plug (a plug having one blade wider than the other), this plug will fit into the power outlet only one way. This is a safety feature. if you are unable to insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized plug. 9. Grounding- If the amplifier is equipped with a 3-wire grounding-type plug, a plug having a third (grounding) pin, this plug will only fit into a grounding-type power outlet. This is safety feature. If you are unable to insert the plug into the outlet, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the grounding-type plug. 10. Power Cord Protection- Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the amplifier. 11. Damage Requiring Service- Unplug this amplifier from the wall outlet and refer servicing to qualified service personnel under the following conditions: a. When the power-supply cord or plug is damaged. b. If liquid has been spilled, or objects have fallen into the amplifier. c. If the amplifier has been exposed to rain or water. d. If the amplifier does not operate normally by following the operating Instructions. Adjust only those controls that are covered by the operating instructions as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the amplifier to its normal operation. e. If the amplifier has been dropped or the cabinet has been damaged. f. When the amplifier exhibits a distinct change in performance-this indicates a need for service. 12. Servicing- Do not attempt to service this amplifier yourself as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified service personnel. 3 III Warranty Information UNPACKING As a part of our system of quality control, every SoundTech product is carefully inspected before leaving the factory to insure flawless appearance. After unpacking, please inspect for any physical damage. Save the shipping carton and all packing materials, as they were carefully designed to reduce the possibility of transportation damage should the unit again require packing and shipping. In the event that damage has occurred, immediately notify our dealer so that a written claim to cover the damage can be initiated with the carrier. The right to any claim against a public carrier can be forfeited if the carrier is not promptly notified and if the shipping carton and packing materials are not available for inspection by the carrier. Save all packing materials until the claim has been settled. SOUNDTECH LIMITED 5 YEAR WARRANTY SoundTech electronics are warranted to be free from defects in materials and workmanship under normal use for a period of 5 years from date of original purchase. During that period, SoundTech will at its option, repair or replace materials at no charge if product has been delivered to SoundTech by a SoundTech dealer or SoundTech Service Center together with the original sales receipt or other proof of purchase. Warranty excludes fuses, exterior finish, normal wear, failure due to abuse, or operation outside of specified ratings. Warranty applies to original purchaser only. This warranty gives you specific rights which vary from state to state. For more information about warranty repair, please contact: FOR YOUR RECORDS All of us at SoundTech thank you for your expression of confidence in SoundTech products. The unit you have purchased is protected by a limited 5 year warranty. To establish the warranty, be sure to fill out and mail the warranty card attached to your product. SoundTech Customer Service Department 444 East Courtland Street Mundelein, IL 60060 847-949-0444 extension 230 847-949-8444 fax For you own protection, fill out the information below for you own records. Model Number Dealer Salesman Other Information: Serial Number Date Of Purchase Phone 4 IV Panel Descriptions FRONT PANEL 1. Power On/Off Switch Before applying power, check all connections and turn down the gain control. The "Soft Start" sequence starts with the POWER indicator LED at half brightness. A couple seconds later the fan starts and the amplifier cycles through one second of protective muting, indicated by the CLIP and protect LED's glowing bright red. The POWER indicator then changes to full brightness and the amplifier is ready. 2. Power Indicator LED Illuminates when the power is on. 3. Peak Indicator LED Indicates that channel of the amplifier is being driven past normal power limits into distortion. 4. Protect Indicator LED If protect conditions should occur, such as a short in a speaker cable or connector or excessively high operating temperatures, this LED will light and the amplifier will stop operation until the condition is corrected. 5. Signal LED Indicates that a signal is present at the input. 6. Mono/Bridge Mode Indicator LED Shows when channels 1&2 are in the bridged mono mode. 7. Input Level Attenuator Establishes the required input level for each channel. In the bridge mode, only the channel 1 attenuator is functional. 5 Panel Descriptions REAR PANEL 8. Speakon Connector Speaker Outputs Separate NL4 connectors for CH. 1 and CH. 2 stereo outputs. Note: These connectors are in parallel with the binding post connectors. Care should be taken when attempting to use both types of connector simultaneously. 9. Binding Post Speaker Outputs Connectors are 5-way binding posts for maximum versatility. Use a standard banana plug or bare wire. 10. XLR and ¼" Inputs Low impedance, balanced inputs accept a male XLR connector or a ¼" TRS phone jack. Unbalanced inputs accept a mono ¼" phone plug. Note: The ¼" input accepts either tip/ring/sleeve or tip/sleeve phone connectors. 11. Bridge Mode Switch Bridges the outputs as indicated. Run this in either bridged mono or in stereo depending on the position of the switch. 12. Clip Limiter When an audio signal drives an amp's output circuit beyond its power capability, its clips, flattening the peaks of the waveform. A clip limiter detects this and quickly reduces the gain to minimize the amount of overdrive. The PS3402 has a clip limiter built in and you can switch it on or off as shown at the rear panel. 13. Input Filter (Low Cut Filter) The switchable low-frequency (LF) filter rolls off signals below either 30Hz or 50Hz. This improves performance by eliminating subsonic cone motions making more power available for the speaker rated frequency range. The filters frequency setting for both channels is controlled by the 30Hz/50Hz slide switch. 14. AC Power Cord. This heavy duty power cord uses a 20 amp connector where one blade is perpendicular instead of parallel to the other blade. This is a safety feature to prevent you from plugging into a circuit less than 20 amps. The outlet receptacle will have one T shaped blade insert that will accept both types of connectors. If you do not have this type of receptacle, please contact your local electrician for an upgrade. 15. Cooling Air Port. Do not obstruct air flow to this opening. 6 V Connecting Your System A. MOUNTING The PS3402 Power SourceTM is designed for standard 19" rack mounting. In addition, the amplifier is provided with sturdy no-skid rubber feet for secure table top or stacked operation. When rack mounting one or more amplifiers or when mounting in combination with other equipment, be sure to allow adequate front and rear ventilation to avoid possible heat related damage to your PS3402 Power SourceTM or other rack mounted items. B. OPERATING PRECAUTIONS Your SoundTech PS3402 Power SourceTM power amplifier is well protected from any external faults. However, we recommend following these common sense precautions: 1. Safety Instructions Read and follow all of the safety warnings in this manual.. Do not expose the PS3402Power SourceTM to water or other liquids. Always unplug the unit if water is present. Failure to do so can result in injury or death from electric shock. 2. Grounding Your power amplifier is supplied with a three conductor, grounded power cord and plug. Connect the unit only to a properly grounded mains outlet. Do not use a ground lift adapter or otherwise attempt to defeat the ground on the plug. Failure to properly ground the unit can result in damage to the amplifier or other equipment connected to it and represents a dangerous safety hazard. 3. Line Voltage Operate from AC mains not more than 5% above or below the specified line voltage. Failure to comply may invalidate your warranty. 4. Pre-Connection Caution Always switch off the power and set all the level controls to minimum before making any connections. This will eliminate any chance of unexpected, loud audio transients that could damage your speaker systems. C. STEREO OPERATION Each channel provides a separate and discrete signal at the speaker outputs according to the signal received at the inputs. The PS3402 Power SourceTM has two channels for stereo operation. Follow these steps to use the amplifier in this manner: 1. Set Mono/Bridge switch Set the mono/bridge switch on the rear panel to the stereo position. When the power is on, the mono/bridge LED on the front panel will not light. If the LED illuminates, you have the switch in the wrong position. Change the position of the switch before continuing. 2. Input Connections With ...