Onkyo D 309H Instruction Manual

Pages 32

Year 2015

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Onkyo D 309H Specification

The Onkyo D-309H is a high-fidelity speaker system designed to deliver exceptional audio performance with precision and clarity. Featuring a two-way bass-reflex design, the D-309H offers a well-balanced sound profile suitable for a variety of listening environments. The speaker is equipped with a 2.5 cm soft-dome tweeter that ensures crisp and clear high frequencies, while the 13 cm A-OMF (Advanced Onkyo Micro Fiber) diaphragm woofer provides robust and dynamic bass response. The cabinet construction is meticulously crafted to minimize unwanted vibrations and resonances, ensuring pure sound reproduction.

The D-309H boasts a frequency response range of 45 Hz to 100 kHz, allowing it to handle both low and high frequencies with ease. Its nominal impedance is rated at 6 ohms, making it compatible with a wide range of amplifiers. The speaker is capable of handling a maximum input power of 120 watts, providing ample headroom for dynamic audio playback without distortion. With a sensitivity of 85 dB, the D-309H is efficient enough to produce substantial sound levels even with moderate amplifier power.

The unit's dimensions and design are tailored to integrate seamlessly into home audio setups, offering both aesthetic appeal and functional versatility. The speaker's finish is available in a sophisticated wood veneer, complementing various interior styles. The Onkyo D-309H stands as a testament to Onkyo’s commitment to high-quality audio engineering, providing audiophiles with a reliable and impressive sound solution.

Onkyo D 309H F.A.Q.

How do I properly connect the Onkyo D 309H speakers to an amplifier?

Ensure that the amplifier is turned off before making any connections. Use high-quality speaker cables to connect the positive terminal of the speakers to the positive terminal of the amplifier, and the negative to the negative. Make sure the connections are secure to prevent any sound distortion.

What is the recommended break-in period for the Onkyo D 309H speakers?

The recommended break-in period for Onkyo D 309H speakers is approximately 50 to 100 hours of playtime. Play a variety of music at moderate volume levels to allow the components to settle in and perform optimally.

How can I troubleshoot if there is no sound coming from the Onkyo D 309H speakers?

First, check all cable connections to ensure they are secure. Verify that the amplifier or receiver is powered on and set to the correct input. Check the speaker settings and ensure that the mute function is not activated. If the issue persists, try connecting the speakers to a different output to rule out an amplifier issue.

What maintenance is required to keep the Onkyo D 309H speakers in good condition?

Regularly dust the speakers with a soft cloth to prevent build-up. Avoid exposing the speakers to direct sunlight or moisture, and ensure they are placed on a stable surface. Check the speaker connections periodically to ensure they remain secure.

Can the Onkyo D 309H speakers be used in a home theater setup?

Yes, the Onkyo D 309H speakers can be integrated into a home theater setup. They can be used as front, rear, or surround speakers, depending on your configuration needs. Ensure that they are matched with a compatible amplifier and other speaker components for the best audio performance.

What is the optimal placement for Onkyo D 309H speakers to achieve the best sound quality?

Place the speakers at ear level when seated and at an equal distance from the main listening position. Ensure that they are at least a few inches away from walls to prevent bass distortion. Toe-in the speakers slightly towards the listening area for a more focused sound stage.

How do I clean the speaker grills on the Onkyo D 309H?

Gently remove the speaker grills and use a vacuum cleaner with a brush attachment to remove dust and debris. Alternatively, you can use a lint roller or a slightly damp cloth. Ensure the grills are completely dry before reattaching them to the speakers.

What should I do if I hear distortion from the Onkyo D 309H speakers at high volume?

First, reduce the volume to a safer level. Check the speaker cables for any damage or loose connections. Ensure that the amplifier is not overdriving the speakers and that the input source is not distorted. Consider using a speaker protection device if the problem persists.

Is it possible to bi-wire the Onkyo D 309H speakers, and what are the benefits?

Yes, the Onkyo D 309H speakers can be bi-wired. Bi-wiring involves using two separate cables to connect the high and low-frequency drivers separately. This can potentially reduce interference between the frequencies and improve overall sound clarity.

What should I check if the Onkyo D 309H speakers produce a humming noise?

Check for ground loops in your audio system, which are a common cause of humming noises. Ensure all cables are properly shielded and not running parallel to power cords. Use a ground loop isolator if necessary, and check that all components are properly grounded.