Rolls RA170 User's Manual
Contents
1. h C7 RAzssowy FICAPO u l P2 ag V i 1G i R7 RB 1 CHANNEL 2 FiK n 1K j PHONE 1 4 gt 3 uz J33 x 4 v g LM3875 Tr NECEM 2008 Tal 8 c m AN UE E ET co Rit DE 4 10K 0 7uH PF CLIP X 77 Rio as RED 1 XK D3 1 47K 1K LDRR R D V swi n ji R13 o 2 00 4880 CP8010 2 a SW SPST 3 x Leni tour 72K 50 d p 2 i BRI CORR a rH x x bo N ROLLS CORPORATION AC PLUG C13 1 5143 South Main Street 5 ES n 53 77 Salt Lake City UT 84107 io Title RA170 RA235 POWER AMPLIFIERS V T 503 T l Size m Document Number SCH Rev Date 11 May 1999 Sheet 1 of 12. ROLLS ROLLS CORPORATION SALT LAKE CITY UTAH ROLLS RA170 70 VOLT 70 WATT POWER AMPLIFIER 70 Volt Power Amplifier RA170 IMPORTANT NOTICE THIS UNIT IS NOT DESIGNED TO DRIVE SPEAKERS DIRECTLY IT IS FOR OPERATION IN 70 VOLT SYSTEMS TOTAL TAPS SHOULD NOT EXCEED 70 WATTS QUICK START QUIDE INTRODUCTION Thank you for your purchase of the ROLLS RA170 70 Volt 70 Watt Power Am plifier The RA170 is a virtually indestructible single rack space amplifier intended for the contractor and install market It requires no transformer coupling to drive 70 volt speakers directly The mono unit features both RCA and 1 4 inputs The 70 volt speaker outputs are provided via spring loaded terminals DESCRIPTION FRONT PANEL 70 Volt Power Amplifier RA170 VOLUME This control adjusts the output level of the RA170 PWR LED indicating the unit s power status CLIP These LEDs light in the event of RA170 circuit overload REAR PANEL A A A IN A E oe MAWINPUTS 120 VAC 50 60 HZ 15 VA IEC Power Cord Connect to a properly grounded AC source NOTE REPLACE THE FUSE WITH ONLY THE PROPER RATED FUSE INSTALLING A FUSE OTHER THAN THE RECOMMENDED RATING WILL DAMAGE THE UNIT 70V Output Spring loaded terminals to be connected to 70 Volt speaker connec tions No special transformers are required MAIN INPUTS 1 4 and RCA jacks to be connected to line level signal to be am plified Note Do not use both
3. jacks simultaneously as both jacks are tied directly together BURN WARNING THE FRONT PANEL OF THE RA170 IS THE HEAT DISTRIBUTION FOR THE OUTPUT STAGE IF THE UNIT IS OPERATED AT HIGH VOLUMES IT MAY GET HOT INSTALLATION Mount the RA170 in a safe and sturdy rack Connect the output of the signal source to the selected input of the RA170 Connect the 70V Output terminals to the 70 volt speakers Plug the AC cord into a properly grounded AC outlet Send signal to the RA170 and adjust the VOLUME control for a comfortable listening level SPECIFICATIONS Recommended Load Frequency Response Equiv Input Noise 70 Volt line 70 Watts maximum 70Hz to 20 kHz 100 microVolt typical A weighted 600 Ohm input S N Ratio 114 dB 70 Watts Gain 40 dB Input Impedance 47 k Ohms Size W x H x D 19 x 1 75 x 5 A8 x 4 5 x 12 7 Weight 5 5 lbs 2 5 kg SCHEMATIC RCA PC Ss Jia 1U RA235 1UF RA170 P1 PE HOR2 BLK lt T_HoRr2 T A L RI P100K 10K lr CHANNEL PHONE 1 4 i t 5 LM3875 Sach L 220PFl 7 ET ni e IN SERIES WIOUTPUTS RA170 ONLY RS C5 i C470U C470U 10K oro Hl CLIP 0 7uH PF NN RED C T Hore Sls epi sr RS i rg ABS LDRR RATTOONLY gt 47K R4 Tara i BLK 1K R 1K C 470 470U pre l L 47K CASTLE GOA VASI dee ie ei L ce EE a Mu
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