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Summary of Contents for Precision Power POWER CLASS PAR-245
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Page 1: Table Of Contents
CONTENTS (click on a topic to view) Congratulations System Tuning Features and Specifications System Tuning Mounting Frequency Distribution Mounting Frequency / Q Selection Code Wiring Frequency / Q Selection Code Wiring System One Functions System Two Functions System Three System Tuning Troubleshooting System Tuning Block Diagram... - Page 2 Congratulations and thank you..for choosing PrecisionPower audio epuipment. At PrecisionPower we proudly design, engineer and manufacture audio products at our facility in Phoenix, Arizona. Our award winning engineering team utilizes innovative technology to consistently deliver Absolutely State of the Art performance, sound quality, reliability, and value.
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Page 3: Features And Specifications
FEATURES / SPECIFICATIONS 5 Band Parametric Equalizer Preamp Line Driver Choice of 16 Selectable Frequency/Q Settings for Each Band Front and Rear Outputs with Fader Control Dual Selectable Illumination Center-Detented Boost/Cut Controls 15 dB Boost/Cut for Each Band Defeat Switch Gold-plated RCA Input and Output Connectors PWM (Pulse Width Modulated) Power Supply Independent L &... -
Page 4: Mounting
Once a location has been chosen, securely mount the PAR-245 using the two supplied brackets. There are two different sets of brackets included with your PAR-245 . One set is used to flush mount the PAR- 245 , as shown above. The other set is used to surface mount, as shown on the next page. - Page 5 MOUNTING I n - C l i p Dimensions 6.75"W 4.60" L 0.95"H I n - C li p I n - C li p BACK TO CONTENTS...
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Page 6: Wiring
LEFT RIGHT FOWARD REVERSE Volume Power In-Clip Defeat PAR-245 Fader Low-Mid High-Mid Treble NOTE Before beginning, disconnect the negative (-) terminal of the battery prior to working on the positive (+) terminal to prevent a short to ground. This is important, unless you want to spend the rest of your life with a nickname like "Sparky,"... - Page 7 Once you have routed the power, ground, and remote wires through the vehicle, it is time to connect the wires to the PAR-245 . Be sure that you have not reconnected the ground cable to the negative post of the battery.
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Page 8: Functions
FUNCTIONS 1. Input Gold plated RCA inputs. Plug in the RCA cables from the source unit here. 2. Rear Output Gold plated RCA outputs. Plug in the RCA cables to your rear channel amplifier here. 3. Front Output Gold plated RCA outputs. Plug in the RCA cables to your front channel amplifier here. - Page 9 1. Power LED Red light indicates power on. 2. Input Clip Input-Clip indicator lights when the PAR-245 is overdriven. With the source unit at 3/4 full volume, adjust the input sensitivity so that the light blinks only on very loud material.
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Page 10: System Tuning
Adjusting amplifier input gains: Adjust gains to minimum sensitivity (fully counterclockwise on the gain control of a PPI amplifier.) Turn the volume knob on the PAR-245 to the 3 o'clock position. Increase the gain on the amplifier until the onset of audible distortion. - Page 11 It is important to understand what your equalizer actually controls to be able to use it effectively. On the face of the PAR-245 are five Boost/ Cut controls each corresponding to a range of frequencies. On the...
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Page 12: System Tuning
SYSTEM TUNING NOTE: If you are using the PAR-245 as well as another equalizer (like the DEQ-230 or PMQ-210 ) Go to step 11. 1) The first step is to locate a suitable source of “pink noise." A good choice would be the current IASCA competition reference disc. -
Page 13: System Tuning
6 kHz - 16 kHz 6) Looking at the Frequency/Q selection chart for the selected band, set the switches on top of the PAR-245 to the frequency that is closest to the peak (or dip) and has the highest Q. Turn the Boost/Cut control counterclockwise until the peak (clockwise to correct a dip) comes in line with your desired curve. -
Page 14: System Tuning
This will give you clues as to what frequencies need to be adjusted on the PAR-245 . (If you have already tuned using an RTA, this step is icing on the cake.) Make one adjustment at a time, giving yourself time to notice the changes. -
Page 15: Frequency Distribution
FREQUENCY DISTRIBUTION FUNDAMENTAL NOTE HARMONIC OR OVERTONE 100 200 400 800 1.6 3.2 6.4 12.8 20K electric guitar acoustic guitar violin cello double bass trumpet french horn trombone tuba soprano sax tenor sax clarinet oboe flute piano synthesizer female vocal range male vocal range tympani kick drum... -
Page 16: Frequency / Q Selection Code
FREQUENCY/Q SELECTION CODES BACK TO CONTENTS... - Page 17 FREQUENCY/Q SELECTION CODES PAR-245 Frequency Controls Use a small flat-bladed screwdriver to change the Frequency/Q selection switches to the settings following the System Tuning guidelines. BACK TO CONTENTS...
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Page 18: System One
Fa de De fe Su b Lo w Lo w- M id Hi gh -M id Tr eb PAR-245 Preamp/Equalizer PMQ-210 Ten Band Parametric EQ FRX-456 Crossover PSC-221 Phase Shift Control High Pass Frequencies Tweeter Tweeter POWER CLASS Amplifier ™... -
Page 19: System Two
Po we In -C Fa de De fe Su b Lo w Lo w- M id Hi gh -M id Tr eb PAR-245 Preamp/Equalizer Front Output Rear Output PSC-221 Phase Shift Control Passive Passive Tweeter Tweeter Crossover Crossover MidRange MidRange... -
Page 20: System Three
In -C Fa de De fe Su b Lo w Lo w- M id Hi gh -M id Tr eb PAR-245 Preamp/Equalizer Front Output Rear Output Subwoofer Subwoofer POWER CLASS ™ Two ChannelAmplifier Low Pass PSC-221 Phase Shift Control Low Pass... -
Page 21: Troubleshooting
TROUBLE SHOOTING NO SOUND Is the LED lit? Check Power and Remote turn-on wire Check Input cables for signal by for voltage. Make sure Ground wire is connecting them to the next secure. component in line. ANY SOUND NOW? Problem is in the Equalizer. See your Problem is elsewhere in the system. -
Page 22: Block Diagram
BLOCK DIAGRAM BACK TO CONTENTS... - Page 23 WA R R A N T Y Three-Year Limited U.S.A. Warranty This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. PrecisionPower warrants its products to be free from defects in materials and workmanship under normal use and service for a period of three (3) years from the date of original purchase when the unit is installed by an Authorized Dealer.
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