Rolls RA2100B User's Manual
Contents
1. panel and depending on the load demand it may become very hot if drawn upon heavily DRIVING 25 OR 70 VOLT LINES The RA2100b will drive 25 or 70 Volt lines directly with no added transformers when used the following way e Each channel will drive 25 volt lines directly e A single 70 volt line may be driven when the RA2100b is in Bridged mode In order to drive two 70 volt lines two 8 ohms to 70 Volt conversion transformers will be needed SCHEMATIC2. SPECIFICATIONS Power Output Stereo Input Connectors Output Connectors Sensitivity THD S N Ratio Power Bandwidth Damping Factor Slew Rate Phase Shift Input Impedance Power Size Weight 100 Watts RMS ch 4 Q 70 Watts RMS ch 8 Q Bridged 200 Watts RMS or 70 Volt 8 Q 1 4 TRS balanced and RCA 1 4 and 5 way binding posts lt 1 VRMS for full output lt 08 1kHz 1 Watt 106 dBU 50 Hz 25 kHz 1 dB gt 150 100 Volts microSecond lt 10 Deg 20Hz 20kHz 10 KQ Balanced 120 VAC 60Hz 2 5A 230 VAC 50Hz 19 x 3 5 x 7 5 48 x 9x 19 cm 12 Ibs 5 5 kg OLLS i d 70 VOLT BRIDGED RA2100b Power Amplifer 100 WATT STEREO 200 WATT BRIDGED LIMITED WARRANTY This product is warranted to the original consumer purchaser to be free from defects in materials and workmanship under normal installation use and service for a period of one 1 year from the date of purchase as shown on the purchaser s receipt The obligation of Rolls Corporation under this warranty shall be limited to repair or replacement at our option during the warranty period of any part which proves defective in material or workmanship under normal installation use and service provided the product is returned to Rolls Corporation TRANSPORTATION CHARGES PREPAID Products returned to us or to an authorized Service Center must be accompanied by a copy of the purchase receipt In the absence of suc
3. h purchase receipt the warranty period shall be one 1 year from the date of manufacture This warranty shall be invalid if the product is damaged as a result of defacement misuse abuse neglect accident destruction or alteration of the serial number improper electrical voltages or currents repair alteration or maintenance by any person or party other than our own service facility or an authorized Service Center or any use violative of instructions furnished by us D This one year warranty is in lieu of all expressed warranties obligations or liabilities Ani d a A a a A a a a a A a d a a a e ANY IMPLIED WARRANTIES OBLIGATIONS OR LIABILITIES INCLUDING BUT NOT 0 10 1 530 100 0 10 1 5 30 100 PROTE WATTS 4 Ohms 4 LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE SHALL BE LIMITED IN DURATION TO THE ONE YEAR DURATION OF THIS WRITTEN LIMITED WARRANTY Some states do not allow limitations on how long an implied warranty lasts so the above limitation may not apply to you MosFeT POWER IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR BREACH OF THIS OR ANY OTHER WARRANTY ee FOWA RA2100b AMPLIFIER EXPRESSED OR IMPLIED WHATSOEVER Some states do not allow the exclusion or D limitation of special incidental or consequential damages so the above limitation or exclusion may not apply to you This warranty gives you specific legal rights a
4. nd you may also have other rights which vary from state to state I nS ROLLS d ROLLS CORPORATION SALT a m UTAH OWNERS MANUAL INTRODUCTION Thank you for your purchase of the ROLLS RA2100b Power Amplifier The RA2100b is a stereo 100W channel RMS power amplifier in a standard 2 rack space format It is intended for professional audio and distributed musical applica tions The unit features 100 Watts per channel RMS into four ohms 85 Watts per channel into eight ohms and for the contractor 70 Volts eight ohms The unit also features MOSFET drivers in a voltage and current gain circuit a one second input turn on delay and LED power output meters The RA2100b will drive 25 Volt speaker lines directly from each channel or 70 Volt lines bridged INSPECTION 1 Unpack and inspect the RA2100b box and package 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 2 Please complete the Warranty Registration Card and return it to the factory INSTALLATION Connect the power cord to an AC power source connect the input to the signal source and to the RA2100b via the RCA or 1 4 input jacks Speakers may be connected by using the 1 4 output jacks or the dual banana posts Turn the Volume controls fully counterclockwise off and turn on the power switch the power LED
5. should light With the program material running slowly increase the Volume controls until the desired level of sound is present There is a one second turn on delay provided to prevent possible speaker damage in case all equipment is on a signal power strip SERIAL NUMBER a iai OUTPUT 2 OUTPUT 1 JIO SSTT e tee w ROLLS O 3 o Wous OUTPUT 1 CORPORATION p ourpur2 MAINS POWER P O mame KTE a praan git O er es a Seti asa oe RISQUE DE CHOC NE PAS ENLEVER BRIDGING To bridge the RA2100b first ensure the power is off Move the Bridging switch to the Bridge position The Channel 1 Volume control will be the master volume Channel two Volume is inactive Connect the input to Channel 1 input then connect the load speakers to the two positive red banana jacks Make no connections to the black posts The level meters will both light and the output power into 8 ohms is the sum of the LEDs that light FAULT PROTECTION The fault protection in the RA2100b limits the current to the output stage in the faulted channel and turns on all the LEDs in that channel This mode is entered whenever the output stage is called upon for too much power it may also be fooled by impedances lower than four ohms which may cause the output stage to overheat and burn up the MOSFETs Since the RA2100b is convection cooled the unit radiates heat from the rear
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