User manual RANE HC 4

[. . . ] OPERATORS MANUAL HC 4 HEADPHONE AMPLIFIER QUICK START Conect the output from any stereo source such as a mixer or tape deck, and plug the left and right inputs into the respective INPUT jacks. The Inputs accept balanced or unbalanced sources. [. . . ] Occasional flickering is acceptable. The overload point automatically varies with the headphones used. Remote POWER supply input The unit is supplied from the factory with a Model RS 1 remote power supply suitable for connection to this input jack. The power requirements of the unit call for an 18 volt AC center-tapped transformer only. Never use a power supply with your unit other than the one supplied or a replacement approved by Rane Corporation. Using any other type of supply may damage the unit and void the warranty. Chassis ground point A screw is supplied for chassis grounding purposes. This unit comes with an outboard power supply which does not ground the chassis through the line cord. The HC 4 can be grounded either to another chassis which is earth grounded, or directly to the grounding screw on an AC outlet cover by means of a wire connected to this chassis grounding screw. Manual-2 PHONE Output jacks These stereo ¼" TRS jacks accept standard ¼" TRS stereo headphone plugs. Individual LEVEL controls These control the volume for each set of headphones as they are driven from the INPUTS. It's always a good idea to keep this control turned down before plugging in a pair of phones, then turn it up slowly. POWER switch and LED Your basic, straightforward power switch. When the yellow LED is lit, the HC 4 is ready to go. INPUT jacks These are automatic balanced/ unbalanced Inputs, which accept either a ¼" TRS (Tip-Ring-Sleeve) plug for balanced operation, or a ¼" TS (TipSleeve) plug for unbalanced operation. A balanced line is best when connecting a cable over 10 feet in length. You do nothing different when hooking up balanced or unbalanced lines. The HC 4 is one smart animal. HC 4 CONNECTION With the power switch in the off (out) position, plug the power cord into the appropriate AC power source indicated on the rear panel. Locate the power supply case away from the HC 4 and other hum sensitive equipment. [. . . ] See RaneNote 100, "Understanding Headphone Power Requirements, " elsewhere in this booklet, or downloadable from Rane's website. HC 4 POWER MH 4 Power 0. 250 0. 207 POWER IN WATTS 0. 200 0. 146 0. 150 0. 100 0. 050 0. 000 600 300 150 75 50 32 16 8 0. 089 0. 089 0. 146 0. 239 0. 233 0. 207 LOAD IN OHMS HC 4 power with all Channels driven simultaneously or with any combination ©Rane Corporation 10802 47th Ave. W. , Mukilteo WA 98275-5098 TEL (425)355-6000 FAX (425)347-7757 WEB http://www. rane. com Manual-4 All features & specifications subject to change without notice. [. . . ]