R8 - Loudspeaker Bogen - Free user manual and instructions

Product Type	Passive Loudspeaker
Brand	Bogen
Model	R8
Dimensions (H x W x D)	12.5 x 8.5 x 7.5 inches
Weight	12.5 lbs
Impedance	8 ohms
Power Handling (RMS)	60 watts
Frequency Response	60 Hz - 20 kHz
Sensitivity	90 dB
Driver Configuration	1 x 8" woofer, 1 x 1" tweeter
Enclosure Type	Bass-reflex (ported)
Connector Type	Screw terminals (5-way binding posts)
Mounting Options	Wall-mountable (bracket not included)
Recommended Amplifier Power	20 - 120 watts per channel
Material	MDF cabinet with vinyl finish
Grille	Detachable cloth grille
Usage	Indoor commercial or home audio
Warranty	2 years limited

Frequently Asked Questions - R8 Bogen

What is the impedance of the Bogen R8 speaker?

The Bogen R8 has an impedance of 8 ohms, making it compatible with most home and commercial amplifiers.

Can I mount the R8 speakers on the wall?

Yes, the R8 speaker has keyhole slots on the back for wall mounting. A mounting bracket is not included, but standard speaker brackets can be used.

What is the power handling of the R8?

The R8 handles 60 watts RMS and can handle peaks up to 120 watts. It is recommended to use an amplifier providing 20-120 watts per channel.

What type of cable should I use with the R8?

Use 16-gauge or thicker speaker wire for distances up to 50 feet. Strip about 1/2 inch of insulation and connect to the binding posts.

How do I clean the R8 speaker?

Wipe the cabinet with a dry or slightly damp cloth. Do not use abrasive cleaners. The grille can be removed and vacuumed gently.

Does the R8 come with a grille?

Yes, the R8 includes a detachable cloth grille that can be removed for a more modern look.

What is the frequency response of the R8?

The frequency response is 60 Hz to 20 kHz, offering good bass response and clear highs for a speaker of this size.

Can I use the R8 outdoors?

The R8 is designed for indoor use only. It is not weatherproof and should not be exposed to moisture or extreme temperatures.

What is the warranty on the Bogen R8?

Bogen offers a 2-year limited warranty against defects in materials and workmanship.

Are the speakers magnetically shielded?

The R8 speakers are not magnetically shielded. Keep them at least 12 inches away from CRT monitors or magnetic media.

USER MANUAL R8 Bogen

Two fossilized rock fragments labeled R6/R6T and R8/R8T, showing hexagonal patterns in their surface (no text or symbols on the rocks themselves)

NEARROCK LANDSCAPE LOUDSPEAKERS

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 sound 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 speakers to ensure adequate coverage.

LOW FREQUENCY OUTPUT

NEAR ROCK loudspeakers are engineered to deliver ample bass output in open areas. However, bass output will increase if the 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 blurry 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: Although NEAR ROCK speakers are waterproof, avoid spraying high-pressure water directly into the speaker grilles.

CONNECTIONS (Wire colors may vary. If so, contact Technical Support.)

graph TD
    A["Joining Speakers in Parallel"] --> B["16W"]
    A --> C["16W"]
    A --> D["C"]
    A --> E["C"]
    A --> F["Join like wires with wire nuts"]
    G["AMPLIFIER WITH 70V OUTPUT"] --> H["AMP'S SPEAKER OUTPUTS"]
    H --> I["Common wire (black)"]
    H --> J["16W wire (white)"]
    K["R8T R8T R8T R8T R8T"] --> L["16W"]
    K --> M["16W"]
    K --> N["16W"]
    K --> O["16W"]
    K --> P["16W"]
    K --> Q["16W"]
    K --> R["16W"]
    K --> S["16W"]
    K --> T["16W"]
    K --> U["16W"]
    K --> V["16W"]
    K --> W["16W"]
    K --> X["16W"]

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 good rule of thumb is to select an amplifier with 20% greater power; in this case, an amplifier that delivers about 115W.

EXAMPLE OF 8Ω SYSTEM CONFIGURATION

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 damage an amplifier not designed to operate at impedances below 4 ohms.

SPECIFICATIONS

MODEL NUMBER	R6/R6T	R8/R8T
MID/BASS DRIVER	6" MDTTM	8" MDTTM
TWEETER	1-1/8" inverted-dome	1-1/8" inverted-dome
FREQUENCY RESPONSE	75Hz – 20kHz	60Hz – 20kHz
NOMINAL IMPEDANCE	R6: 8ΩR6T: 70V	R8: 8ΩR8T: 70V
MAXIMUM POWER	R6: 100W @ 8ΩR6T: 32W @ 70V	R8: 175W @ 8ΩR8T: 64W @ 70V
SENSITIVITY (1W @ 1M)	88dB	90dB
SOUND DISPERSION	Horiz - 100°, Vert - 45°	Horiz - 100°, Vert - 45°
DIMENSIONS (in / cm)	(in.) 18 W x 14 D x 10 H(cm) 46 W x 36 D x 25 H	(in.) 23 W x 15 D x 16 H(cm) 58 W x 38 D x 41 H
WEIGHT (lbs / kg)	R6: 35 lbs; 15.9 kgR6T: 37 lbs; 16.8 kg	R8: 64 lbs; 29.1 kgR8T: 67 lbs; 30.4 kg

NEAR® TECHNOLOGIES

NEAR's 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 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
• 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 Liquid 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 fact, 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 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 doesn't change characteristics
• Longer excursions with smaller diameter woofers; spiders limit excursions

BOGEN®

COMMUNICATIONS, INC.

P.O. Box 575, Ramsey, NJ 07446 U.S.A.

tel [phone] • fax [phone]

e-mail: [e-mail] • www.nearspeakers.com