User manual ROLLS PM52

[. . . ] INTRODUCTION Thank you for your purchase of the PM52 Headphone Tap. The PM52 is for connecting headphones to a speaker line. [. . . ] POWER AMP LOOP: Two paralleled 1/4" stereo TRS jacks, one for receiving the input signal and the other for connecting to a speaker or other input device. VOLUME: Controls the level of the signal to the headphones. HEADPHONES: Two 1/4" stereo TRS jacks for connection to stereo headphones. MONO STEREO In order to use this system safely, avoid prolonged listening at excessive sound pressure levels. Please use the following guidelines established by the Occupational Safety Health Administration (OSHA) on maximum time exposure to sound pressure levels before hearing damage occurs. USING THIS SYSTEM AT EXCESSIVE VOLUMES CAN CAUSE PERMANENT HEARING DAMAGE. USE AS LOW A VOLUME AS POSSIBLE WARNING 90 dB SPL at 8 hours 95 dB SPL at 4 hours 100 dB SPL at 2 hours 105 dB SPL at 1 hour 110 dB SPL at 1/2 hour 115 dB SPL at 15 minutes 120 dB SPL - avoid or damage may occur It is difficult to measure the exact Sound Pressure Levels (SPL) present at the eardrum in live applications. In addition to the volume setting on this Personal Monitor unit, the SPL in the ear is affected by ambient sound from floor wedges or other devices. The isolation provided by the fit of quality earphones is also an important factor in determining the SPL in the ear. Follow these guidelines in the use of this product to protect your ears from damage: 1. Turn up the volume only to the point where hearing is comfortable. Ringing in the ears may indicate that the levels are too high. [. . . ] Stop using the earphones if they are causing great discomfort or infection. POWER AMP LOOP HEADPHONE TAP VOLUME PM52 HEADPHONE OUTPUTS WARRANTY For information on the Rolls One Year Limited Warranty, and to register this product, visit our website at www. rolls. com HEADPHONE TAP MONO STEREO HEADPHONE TAP VOLUME PM52 SPECIFICATIONS Input Impedance: Size: Weight: 150 2. 25" x 2. 5" x 1. 25" (5. 7 x 6. 3 x 3. 2 cm) 1lb (. 45 Kg) POWER AMP LOOP HEADPHONE OUTPUTS PM52 SCHEMATIC PLEASE NOTE: THE PM52 REQUIRES A MINIMUM OF A 10 WATT AMPLIFIER TO FUNCTION PROPERLY. The PM52 is the ideal device for anyone wanting to use headphones rather than a wedge or speaker monitor. Drummers, instrumentalists, and sound professionals alike have all benefited from the PM52. - Converts speaker level signals to headphone level - Elliminates heavy wedge monitors - Passive - no power required Rolls Corporation Salt Lake City, UT 9/95 Headphone Tap PM52 [. . . ]