Bogen-R6-R6T-R8-R8T-Operation-Manual 电路图 维修手册.pdf

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1、Models R6/R6T and R8/R8T LANDSCAPE LOUDSPEAKERS P.O. Box 575, Ramsey, NJ 07446 U.S.A. tel 201-934-8500 fax 201-934-9832 e-mail: SPECIFICATIONS NEARTECHNOLOGIES MODEL NUMBER MID/BASS DRIVER TWEETER FREQUENCY RESPONSE NOMINAL IMPEDANCE MAXIMUM POWER SENSITIVITY (1W 1M) SOUND DISPERSION DIMENSIONS (in

2、/ cm) WEIGHT (lbs / kg) R6/R6T 6 MDT 1-1/8 inverted-dome 75Hz 20kHz R6: 8 R6T: 70V R6: 100W 8 R6T: 32W 70V 88dB Horiz - 100, Vert - 45 (in.) 18 W x 14 D x 10 H (cm) 46 W x 36 D x 25 H R6: 35 lbs; 15.9 kg R6T: 37 lbs; 16.8 kg R8/R8T 8 MDT 1-1/8 inverted-dome 60Hz 20kHz R8: 8 R8T: 70V R8: 175W 8 R8T:

3、64W 70V 90dB Horiz - 100, Vert - 45 (in.) 23 W x 15 D x 16 H (cm) 58 W x 38 D x 41 H R8: 64 lbs; 29.1 kg R8T: 67 lbs; 30.4 kg NEARs exclusive MDT metal-alloy diaphragm is about as light as is physically possible nearly the ideal massless piston. The benefits are immediately recognized in the musical

4、 accuracy, fine detail of sound, and ease of listening. Here is a summary of MDT benefits: High rigidity and low mass of metal versus traditional papers and plastics Extremely stable cone structure over long periods of time Fast transmission of sound through the diaphragm means low energy storage Sp

5、ecial anodizing process creates a ceramic coating for increased stiffness Efficient heat-sinking of voice coils under long-term, high-power situations In addition to MDT, another unique technology is incorporated into NEAR speakers: Magnetic Liquid Suspension (MLS). MLS eliminates the traditional me

6、chanical centering device (the “spider”) for the voice coil and replaces it with a magnetic fluid that remains permanently suspended in the gap of the magnet, allowing the voice coil to stay centered and to operate with extreme linearity. In fact, the louder it plays, the more accurate the centering

7、 forces become. Here is a summary of MLS benefits: Voice coil is constantly centered as it moves up and down, for lower distortion Voice coil is more efficiently heat-sinked by fluid instead of air Dual-layer voice coil with separate inner and outer windings reduces distortion at high output levels

8、Greater linearity is accomplished because the mechanical spider is eliminated Constant lubrication of the gap prevents oxidation from outdoor use Long-term operation is more consistent since fluid doesnt change characteristics Longer excursions with smaller diameter woofers; spiders limit excursions

9、 OWNERS GUIDE R6/R6T R8/R8T 54-2038-01R3 0205 Specifications are subject to change without notice. 2000 Bogen Communications, Inc. RadioFans.CN 收音机爱 好者资料库 LOW FREQUENCY OUTPUT NEAR ROCK loudspeakers are engineered to deliver ample bass output in open areas. However, bass output will increase if the

10、speakers are placed near a reflecting surface (such as a wall). UNDERPOWERING VS. OVERPOWERING Most speaker damage is caused by amplifiers with too little power. An overdriven amp sends clipping distortion to the speakers. Clipping is usually audible; it may vary from a harsh sound to a fuzzy or blu

11、rry sound. If you hear clipping at loud volume levels, turn down the volume until the distortion is no longer present. Damage caused by operating the speakers at distorted volume levels is not covered by the warranty. MAINTENANCE Speaker cabinets can be wiped clean or even hosed off. CAUTION: Althou

12、gh NEAR ROCK speakers are waterproof, avoid spraying high-pressure water directly into the speaker grilles. SPEAKER PLACEMENT NEAR ROCK loudspeakers are designed to be placed on the ground, with the grille facing the listening area. The speaker drivers are angled upward to provide proper vertical so

13、und dispersion for listeners standing 10 feet or more away. Sound coverage in the horizontal plane is 100. Keep this angle in mind when positioning the speakers for stereo reproduction. Too great a distance between any 2 speakers will create a dead spot in the coverage. When in doubt, use additional

14、 speakers to ensure adequate coverage. VERTICAL SOUND DISPERSION (45 DEGREES) HORIZONTAL SOUND DISPERSION (100 DEGREES) 10 FEET REFLECTING SURFACES INCREASE BASS OUTPUT MODEL R6T MODEL R8T WIRE JACKET FROM SPEAKER WIRE JACKET FROM SPEAKER black white red green redblack 8W 16W 32W 16W 32W 64W C C TAP

15、 (+) CONNECTIONS whiteblack redgreen MODELS R6 and R8 C 16W C 16W C 16W C 16W C 16W C 16W AMPLIFIER WITH 70V OUTPUT SIX MODEL R8T SPEAKERS CONNECTED IN PARALLEL USING 16W TAPS C 70V Common wire (black) 16W wire (white) R8TR8TR8TR8TR8TR8T AMPS SPEAKER OUTPUTS C 70V Join like wires with wire nuts C 16

16、W C 16W JOINING SPEAKERS IN PARALLEL red black red black AMPS SPEAKER OUTPUTS NOTE: The total number of speakers multiplied by the tap value cannot exceed the output power (in watts) of the 70V amplifier. The above example shows 6 speakers. Using the 16W taps, you need at least (6) x (16W) = 96W. A

17、good rule of thumb is to select an amplifier with 20% greater power; in this case, an amplifier that delivers about 115W. CAUTION: Nominal system impedance is halved (to 4 ohms) when connecting a second pair of ROCK speakers. Adding a third pair will reduce the impedance load further and could damag

18、e an amplifier not designed to operate at impedances below 4 ohms. EXAMPLE OF 70V SYSTEM CONFIGURATION EXAMPLE OF 8 SYSTEM CONFIGURATION CONNECTIONS (Wire colors may vary. If so, contact Technical Support.) NEARROCK LANDSCAPE LOUDSPEAKERS Observe correct polarity for maximum bass performance. Connec

19、t + to + and to as illustrated. RadioFans.CN 收音机爱 好者资料库 Models R6/R6T and R8/R8T LANDSCAPE LOUDSPEAKERS P.O. Box 575, Ramsey, NJ 07446 U.S.A. tel 201-934-8500 fax 201-934-9832 e-mail: SPECIFICATIONS NEARTECHNOLOGIES MODEL NUMBER MID/BASS DRIVER TWEETER FREQUENCY RESPONSE NOMINAL IMPEDANCE MAXIMUM PO

20、WER SENSITIVITY (1W 1M) SOUND DISPERSION DIMENSIONS (in / cm) WEIGHT (lbs / kg) R6/R6T 6 MDT 1-1/8 inverted-dome 75Hz 20kHz R6: 8 R6T: 70V R6: 100W 8 R6T: 32W 70V 88dB Horiz - 100, Vert - 45 (in.) 18 W x 14 D x 10 H (cm) 46 W x 36 D x 25 H R6: 35 lbs; 15.9 kg R6T: 37 lbs; 16.8 kg R8/R8T 8 MDT 1-1/8

21、inverted-dome 60Hz 20kHz R8: 8 R8T: 70V R8: 175W 8 R8T: 64W 70V 90dB Horiz - 100, Vert - 45 (in.) 23 W x 15 D x 16 H (cm) 58 W x 38 D x 41 H R8: 64 lbs; 29.1 kg R8T: 67 lbs; 30.4 kg NEARs exclusive MDT metal-alloy diaphragm is about as light as is physically possible nearly the ideal massless piston

22、. The benefits are immediately recognized in the musical accuracy, fine detail of sound, and ease of listening. Here is a summary of MDT benefits: High rigidity and low mass of metal versus traditional papers and plastics Extremely stable cone structure over long periods of time Fast transmission of

23、 sound through the diaphragm means low energy storage Special anodizing process creates a ceramic coating for increased stiffness Efficient heat-sinking of voice coils under long-term, high-power situations In addition to MDT, another unique technology is incorporated into NEAR speakers: Magnetic Li

24、quid Suspension (MLS). MLS eliminates the traditional mechanical centering device (the “spider”) for the voice coil and replaces it with a magnetic fluid that remains permanently suspended in the gap of the magnet, allowing the voice coil to stay centered and to operate with extreme linearity. In fa

25、ct, the louder it plays, the more accurate the centering forces become. Here is a summary of MLS benefits: Voice coil is constantly centered as it moves up and down, for lower distortion Voice coil is more efficiently heat-sinked by fluid instead of air Dual-layer voice coil with separate inner and

26、outer windings reduces distortion at high output levels Greater linearity is accomplished because the mechanical spider is eliminated Constant lubrication of the gap prevents oxidation from outdoor use Long-term operation is more consistent since fluid doesnt change characteristics Longer excursions with smaller diameter woofers; spiders limit excursions OWNERS GUIDE R6/R6T R8/R8T 54-2038-01R3 0205 Specifications are subject to change without notice. 2000 Bogen Communications, Inc. RadioFans.CN 收音机爱 好者资料库