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Details on selecting speaker wire and ensuring correct polarity for optimal audio.
How to identify positive and negative speaker wires for correct connection.
Crucial advice on connecting terminals correctly to avoid shorts and ensure proper function.
Explanation of push-pin (LU43) and screw-type (LU53) connection methods.
Step-by-step guide for connecting speaker wires using binding posts and banana plugs.
Guidance on resolving audio distortion issues, checking connections, and identifying speaker problems.
The Dual LU43PB/W - LU53PB/W are indoor/outdoor 3-way dynamic loudspeakers designed to deliver accurate high-fidelity sound in various environments. These speakers are built with weather-resistant materials, ensuring optimum durability for both permanent and temporary outdoor use. They are available in black or white finishes, offering aesthetic flexibility to match different settings.
These loudspeakers are versatile and can be used in multiple configurations. They function as stereo pairs when connected to an AV receiver or amplifier, providing a balanced sound experience. For home theater systems, they can serve as surround speakers, enhancing the immersive audio experience. Additionally, they are suitable for computer rooms to augment multimedia sound or as remote speakers to extend audio coverage to other areas of a home or patio. The 3-way design indicates that the speakers incorporate separate drivers for different frequency ranges (woofer for low frequencies, midrange for mid-range frequencies, and tweeter for high frequencies), which contributes to their dynamic sound reproduction.
The Dual LU43PB/W - LU53PB/W speakers offer flexible placement options. They can be mounted on walls or ceilings using the included mounting brackets, or simply placed on a flat surface. When mounting, it is recommended to place both speakers on a common solid surface facing the listening area for optimal audio results. Users should ensure that mounting surfaces are sturdy enough to support the speakers' weight and free from concealed hazards like electrical wires or plumbing.
For wall and ceiling applications, the LU43 model features a rear inset keyhole for surface hanging, while the larger LU53 model includes two 1/4-20 brass inserts for aftermarket mounting systems. The included mounting brackets are easily removable, allowing the speaker to be pivoted to an ideal location once mounted. Thumb screw knobs secure the speaker's position, and users are advised to avoid overtightening them. The hardened steel brackets are suitable for solid wood, brickwork, concrete, hollow building blocks, or wood studs, but not for non-reinforced plaster sheetrock (gypsum board).
The speakers are designed for year-round outdoor enjoyment, though they are weather-resistant, not waterproof. To maximize their lifespan, it is advisable to position them in areas protected from direct elements, such as under eaves or overhangs. Popular outdoor locations include decks, gazebos, porches, atriums, garages, and covered spa areas. For temporary placement without mounting, the speakers can be removed from their brackets, and the thumb screws can be reattached to maintain stability when placed on end.
A unique feature of both the LU43 and LU53 models is the rotatable Dual logo on the grille. This spring-loaded logo can be gently adjusted to a new orientation, which is particularly useful for vertical installations, ensuring the logo always appears upright.
Connecting the speakers to a receiver or amplifier requires speaker wire. Dual recommends using two-conductor 18-gauge speaker wire, ensuring similar lengths for both speakers in a stereo configuration to maintain superior sound quality. Polarity is crucial for proper sound reproduction; users must connect the positive (+) terminal on the receiver to the positive (+) terminal on the speaker, and the negative (-) terminal on the receiver to the negative (-) terminal. Speaker wires are marked for polarity consistency, typically by a color stripe, ridges, or wire color.
The LU43 model utilizes a push-pin terminal design, where users gently depress a colored lever to insert the stripped wire end. The LU53 model features screw-type input posts; users loosen the gold terminal counter-clockwise, insert the wire end, and then re-tighten. Banana-style connectors can also be used with the LU53 by inserting them into the top portion of the binding posts.
The grilles of these speakers are not designed to be removed, as there are no user-serviceable parts behind them, and removal could damage the speaker. This design choice emphasizes the sealed, weather-resistant nature of the product.
In case of sound distortion or knocking, users are advised to immediately lower the volume level of their receiver. Such sounds often indicate that the receiver or speaker is being overdriven, which can lead to damage, especially with prolonged high-volume playback or excessive use of bass/treble controls or "Loudness" buttons at higher listening levels.
Troubleshooting steps include checking speaker wire and audio connections for proper seating and polarity. If distortion persists in only one speaker, swapping the speakers' positions can help determine if the problem lies with the speaker itself or the audio system's original location. If the distortion moves with the suspect speaker, the speaker may be faulty. If it remains in the original location, the issue is likely elsewhere in the audio/video system.
Proof of purchase, such as the original sales receipt, is essential for warranty service. Users are encouraged to keep their receipt with the installation/owner's manual. The warranty covers defects in material and workmanship for one year from the purchase date, with Dual Electronics Corp. offering repair or replacement at their discretion. However, the warranty does not cover installation/removal costs, damage from accident, misuse, improper installation, unauthorized repair, or damage during return shipment.
General| Frequency Response | 60Hz - 20kHz |
|---|---|
| Tweeter size | 1 inch |
| Woofer size | 4 inch |
| Impedance | 8 Ohms |
| Sensitivity | 85 dB |
| Weight | 5.5 lbs |
| Type | Bookshelf |
| Driver Size | 4 inch |
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