User manual ROLLS PA202

[. . . ] Bridge or Stereo Operation: The bridge - stereo function of the PA202 is a way of converting the unit from two channels at 20 watts each to one channel at 40 watts. To do this depress the CONFIGURATION SWITCH and follow the silk screening on the chassis for the mono-bridge operation. OUTPUTS OUTPUTS: RIGHT LEFT BRIDGE PA202 RISQUE DE CHOC - NE PAS ENLEVER Mini Two Channel Amp 20 X 20 watts CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. [. . . ] The unit for powering speakers in small environments. NOTE: THIS MANUAL ASSUMES THE USER HAS A WORKING KNOWLEDGE OF AUDIO ELECTRONICS, BALANCED AND UNBALANCED CONNECTIONS, AND PROPER SIGNAL LEVEL SETTING. If obvious physical damage is noticed, contact the carrier immediately to make a damage claim. We suggest saving the shipping carton and packing materials for safely transporting the unit in the future. Please visit our web site at www. rolls. com and click on the Register Your Warranty Here button, or complete the Warranty Registration Card and return it to the factory. The holes in the back and side of the PA202 are for the attachment of a zip tie (not included). For power cord strain relief as needed. LIMITER EXPLANATION: The limiter is a function that will not allow very loud signals to pass through the PA202 by limiting their volume temporarily to a normal level, preventing damage to the speakers or the unit its self. It is important to note that the limiter utilizes a circuit that decreases the amount of very loud signals it does not cut out all potentially loud signals. If you are experiencing distortion turning the Limiter on may help but it is not intended for total dynamics control. Its primary function is to help prevent one time very loud signals like dropping a microphone or loud program material that is temporary. SPECIFICATIONS Line Input Impedance: Power Output: Voltage Gain: Maximum Supply Voltage: THD: EIN: Efficiency: Input Sensitivity: Bandwidth: Size: Weight: 8 DESCRIPTION REAR PANEL SPEAKER OUTPUT: Barrier screw terminals. VDC: For connection to the power supply. BRIDGE: STEREO: + - + -+ SERIAL NUMBER VDC + - OUTPUTS FRONT PANEL CHANNEL VOLUME: Adjusts the level of signal from the Line Input to the Line/Power and Speaker outputs. [. . . ] The stereo and bridge outputs are labeled on the silk screening of the unit. We recommend selecting the LIMITER ON function, but the circuit may be disabled by selecting the OFF position. SCHEMATIC HD1 PORT + C1 1U 1 C2 PORT 2 1U 3 +VB 470PF C3 +V 10K 1% R3 4560 5 R1 10K 1% 6 U2B use 4ec2 pattern L1 22uH C26 . 68uF R6 4. 7K C15 470U SCREW TERMINALS 1 HD2 LEFT PORT + LEFT R2 10K 1% +VB 470PF C9 10K 1% R44 3 R4 10K 1% 2 3 PORT PORT - LINE INS GND 3 J1B RCAX2 4 C4 470PF 3 SW2A HDR4X200 RIGHT PORT + 4 5 C7 1U C8 4 1U 1 6 4560 U2A RIGHT R7 10K 1% 2 PORT - HDR5X200 SW2B 4 R8 5 10K 1% C10470PF R9 10K 1% J1A DPDT BRIDGE PINS 14, 15 SET TO 32dB D2 R13 330 2 RCAX2 D1 1N4148 D3 1N4148 D4 330 R15 C17 . 1uF C18 470U C19 C20 470U . 1uF C21 . 1uF C22 . 1uF 3 +V Q1 2N3904 C24 2 47U SW1 2 1 2 D7 1 1N5242 1 SPST 1N5231b LIMIT ON R16 47K +VB R17 22K C25 47U D5 BLUE Rolls 24VDC adapter J2 1 3 2 F1 FUSE1 VCC 1N5231b D6 JAPDC R18 10K R59 18K 1N400X 5968 S 350 W Murray Utah 84107 Title PA202 20W STEREO AMP Size: Document Number: Rev: FXa PA202. SCH 2199 Date: 28 February 2009 Sheet1 of 1 Rolls Corporation [. . . ]