Before Turning on Your Receiver, Speaker Placement

D-325

1. Peel the insulation off the ends of the speaker cable and twist the core wires.

2. While pressing the lever, insert the wire into the hole, and then release the lever.

3. Make sure that the terminals are gripping the bare wires, not the insulation.

Right speaker

Left speaker

Positive (+) side is

indicated by a

red line

Speaker cable

The type of speaker terminals used on the receiver and their position depends on the model. Refer to the receiver’s instruction manual for details on connecting speakers to the receiver.

Before Turning on Your Receiver:

•Make sure the speaker’s positive (+) terminals are connected to the ampliﬁer’s positive (+) terminals, and the speaker’s negative (–) terminals are connected to the ampliﬁer’s negative (–) terminals. If you get the polarity reversed, the sound will be unnatural, with a limited bass range and poor stereo image.

•Make sure that the positive (+) and negative (–) wires are not touching each other. If they are, a short circuit may occur, damaging your ampliﬁer.

Speaker Placement

The sound quality of the speakers is directly affected by the size and shape of the room they’re used in and its furnishings. When considering where to place your speakers, read the following:

•Where possible, mount the speakers on speaker stands, concrete blocks, bricks, or a sturdy bookshelf. Putting them directly on the ﬂoor will emphasize bass sounds, creating a boomy sound.

•If a speaker is placed on an uneven surface where it can wobble or vibrate, bass performance will be adversely affected. You can eliminate speaker wobble by putting a shim made out of cork or metal, such as a coin, underneath the speaker or stand, as shown.

Shim

•If you mount the speakers on a ﬂat surface, such as a bookshelf, you can improve the sound quality by inserting cork spacers or coins in between the speaker and the shelf. Raising them off the surface like this will reduce the contact area and improve the sound.

•If you like lots of bass, mount the speakers on low speaker stands and place them in front of a solid wall.

•Walls and furnishings affect sound quality. To achieve a good stereo sound, put the left and right speakers in similar locations at the same distance away from your listening position and at the same height. If you put them in totally different locations, for example, one on the ﬂoor and the other on a bookshelf, the stereo imaging will be adversely affected.

•To determine the best positions for your speakers, imagine an equilateral triangle and put the left and right speakers at the ends of the base. The ideal listen- ing position is at or slightly behind the triangle’s apex. Angle the speakers toward your listening position.

•Glass doors and smooth walls behind the listening position can reﬂect the sound from the speakers and can make sounds at certain frequencies louder. You can prevent this by hanging sound-absorbing mate- rial, such as thick curtain, on the door or wall.

Care

To maintain the appearance of the speakers, you should periodically wipe them with a soft, dry cloth. Stubborn stains can be removed by using a soft cloth dampened with water and a mild detergent. Dry the speakers immediately afterward with a clean, dry cloth. Do not use abrasive cloths, thinners, alcohol, or other chemical solvents that may damage the ﬁnish.

D-325, D-425, D-525 specifications

Onkyo, a renowned name in the world of audio equipment, has introduced a line of compact bookshelf speakers that offer exceptional sound quality and design. The Onkyo D-425, D-525, and D-325 models stand out for their advanced technologies, practical features, and impressive performance that cater to both casual listeners and audiophiles alike.

The Onkyo D-425 is designed with a 2-way bass reflex configuration to deliver balanced sound across a wide frequency range. It features a 12 cm woofers made of high-quality materials, ensuring deep bass and clear mid-range tones. The tweeter utilizes a 2.5 cm soft dome, which provides smooth high-frequency response, making it ideal for various music genres. The design incorporates a rear bass port, enhancing low-frequency performance while optimizing sound output for smaller spaces.

In comparison, the Onkyo D-525 elevates the audio experience further with its enhanced driver technologies. It includes a larger 13 cm woofer paired with a 2.5 cm silk dome tweeter, delivering a more pronounced low-end response and crystal-clear highs. The D-525 features reinforced cabinets that reduce unwanted vibrations, maximizing sound clarity and depth. Its elegant design not only looks great in any setting but also complements home theater systems effectively.

The Onkyo D-325, while more compact, does not compromise on sound quality. This model boasts a 12 cm woofer and a 2.5 cm tweeter, similarly structured to its siblings. Its compact size makes it an excellent choice for smaller rooms or as surround speakers in larger setups. The D-325 maintains clarity and detail across all frequencies, providing an immersive listening experience without taking up significant space.

All three models utilize Onkyo's proprietary technologies, including advanced crossover networks for seamless integration between the drivers. They also provide flexibility in placement with their compact dimensions, making them suitable for various home audio setups. Whether it's for casual listening, movie watching, or serious music enjoyment, the Onkyo D-425, D-525, and D-325 speakers provide listeners with various features, exceptional build quality, and above all, rich, captivating sound. Investing in any of these models promises a significant upgrade to your audio experience, showcasing Onkyo's commitment to audio excellence.

Onkyo D-325, D-525, D-425 Before Turning on Your Receiver, Speaker Placement, Care

Models: D-325 D-425 D-525