User manual ROLLS RA170

[. . . ] 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. [. . . ] 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 VOLUME 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: CLIP CLIP PWR 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 SERIAL NUMBER 120 VAC 50/60 Hz 15 VA MODEL RA170 170SPARE S/N Ratio: Gain: Input Impedance: Size (W x H x D): Weight: SCHEMATIC 70 Volt line (70 Watts maximum) 70Hz to 20 kHz 100 µV typical, A weighted 600 input 114 dB @ 70 Watts 40 dB 47 k 19" x 1. 75" x 5" (48 x 4. 5 x 12. 7) 5. 5 lbs (2. 5 kg) 70V OUTPUT CAUTION MADE IN U. S. A. [. . . ] Note: Do not use both jacks simultaneously as both jacks are tied directly together. 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. AC AC PLUG P H O N E 1 /4 J3 P100K 220PF V- RED BLK 1A HDR2 1 HDR2 A R12 1K SW 1 SW SPST V+ T1 2 -0 0 -4 8 8 0 CP8010 R13 C2 4700UF 22K D1 LDRR 3 4 C11 503 2 2 BR1 C13 503 1 C1 4700UF 3 R O L L S C O R P O R A T IO N 5 1 4 3 S o u th M a in S tr e e t S a lt L a k e C ity , U T 8 4 1 0 7 S iz e : T itle : R A 1 7 0 / R A 2 3 5 P O W E R A M P L IF IE R S Document Number: R evB R A 2 3 5 . S C H Ba Date: 11-May-1999 Sheet 1 of 1 1 V- C12 503 [. . . ]