Thank you for your purchase of the HDP-2 Hybrid Dipole Surround Loudspeaker. Please take a few minutes to read through this Owner’s Manual prior to installing your new speakers. The information provided will help you to obtain maxi- mum performance from your audio system. If you have questions or need assistance at any time during the installation or operation of your new speakers, please call your NHT dealer or our Toll Free Customer Hotline at:

1-800-NHT-9993

Please retain the HDP-2’s packaging to protect the speakers

in the event that you move or transport them.

HDP-2 Specifications

·System Type: 2-way acoustic suspension, hybrid dipole design

·Driver Complement: 6.5” long-throw woofer, (2) 1” fluid-cooled soft dome tweeters, (2) 4.5” long-throw woofers

·Crossover: 200 Hz, 12 db/octave, 2.8 KHz, 12 db/octave

·Response: 57Hz - 20KHz, +/- 3dB

·Sensitivity: 87db (2.83V at 1M)

·Power Rating: 10 W/ch minimum, 125 W/ch maximum

·Impedance: 6 ohms nominal, 3.2 ohms minimum

·Inputs: 1 pair of 5-way binding posts

·Weight: 18.5 lbs. each

·Dimensions: 9"H x 18"W x 7.5"D

·Finish: High gloss black or white laminate

Specifications are subject to change without notice, in accordance with our policy of continuously upgrading the performance of our products.

„Design

NHT speakers are designed to deliver refined, musical sound from attractive and affordable packages. Our efforts are guided by the study of human hearing and are optimized for real-world use. Every NHT speaker undergoes rigorous testing and quality control at the factory to ensure you years of listening pleasure.

The HDP-2 is designed to provide diffuse, non-localizable sound radiation when used as rear (surround) speakers in a digital 5.1-chan- nel home theater system. The HDP-2 was designed with a natural tonal balance that allows it to be used in conjunction with any of NHT’s direct-radiating speakers. It is an ideal surround speaker in rooms where the listening position is close to the rear wall, as it pro- jects an ambient soundfield around the listener when placed directly to the sides of the listening area.

The HDP-2 is a hybrid dipole design which employs a unique combination of dipolar upper-range drivers that radiate sound in two direc- tions, paired with a monopole woofer that fires toward the wall for low frequency reinforcement.

„Placement

Prior to installing the HDP-2’s, spend some time considering placement options. For best results, mount the HDP-2’s directly to the side of the seating position (Fig. 1). Place the speakers at a minimum height of six feet, to achieve optimal sound and to provide sufficient head clearance. Mount the HDP-2’s at least a few inches from the ceiling. The HDP-2 is designed for indoor use only.

When the HDP-2’s are mounted on the side walls, it is very important that you mount the “right” speaker on the right side of the room and the “left” speaker on the left side of the room. The “right” speaker has a small round sticker with the letter “R” on its back panel. This is because the forward-firing drivers on the “right” HDP-2 are in-phase with the front (main) speakers in the system, while its rear-firing dri- vers are wired out of phase and must face the rear of the room in order to avoid cancellation effects with the front speakers. Similarly, the “left” HDP-2 features forward-firing drivers that are in-phase with the front speakers, and rear-firing drivers wired out of phase.

Alternately, the HDP-2’s may be mounted on the rear wall behind the seating position, if the room necessitates this configuration. Again, it is preferable to mount the speakers at a minimum height of six feet, and at least a few inches from the ceiling. When mounted on the rear wall, it is very important that you switch the speakers around, using the “right” HDP-2 on the left and the “left” HDP-2 on the right. This is done to ensure that the HDP-2’s radiate sound toward center of the room (listening area) in phase with the front speakers. Do not simply reverse the polarity to the HDP-2’s as an alternative to switching them around. Reversing the polarity would put the HDP-2’s woofers out of phase with the front speakers, causing cancellation effects.

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NHT owner manual HDP-2 Specifications, „ Design, „ Placement, NHT-9993
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HDP-2 specifications

The NHT HDP-2 is an exceptional high-performance digital-to-analog converter (DAC) and headphone amplifier, designed to elevate audio experiences for music enthusiasts. With its sleek design and advanced technologies, the HDP-2 represents a perfect blend of form and function, appealing to both casual listeners and audiophiles.

One of the standout features of the NHT HDP-2 is its high-resolution DAC, which supports various sampling rates up to 24-bit/192 kHz. This capability ensures that users can enjoy their music with remarkable clarity and detail, capturing the nuances of the original recordings. The HDP-2 is equipped with multiple input options, including USB, coaxial, optical, and analog inputs. This versatility allows users to connect a wide range of audio sources, from computers and streaming devices to turntables.

Another key characteristic of the HDP-2 is its high-quality headphone amplification. The built-in headphone amp is designed to drive a variety of headphones, from low-impedance models to high-impedance audiophile favorites. With its powerful output, the HDP-2 provides ample headroom, ensuring dynamic and distortion-free sound reproduction even at higher volumes.

The NHT HDP-2 is also engineered with a unique digital volume control, which enhances the listening experience by maintaining optimal signal integrity. This feature allows users to make precise adjustments to volume levels without compromising audio quality. Additionally, the unit features a robust analog output stage, providing balanced and unbalanced outputs to connect to external amplifiers or powered speakers.

For those concerned with connectivity, the HDP-2 supports asynchronous USB audio, which eliminates jitter for optimal sound quality when streaming from a computer. The device is compatible with both Windows and macOS operating systems, making it an ideal choice for users across different platforms.

In terms of build quality, the NHT HDP-2 features a solid chassis that minimizes interference and vibration, ensuring a stable performance. The device's aesthetic appeal is complemented by an easy-to-read front panel display that provides important information about the current audio settings.

Overall, the NHT HDP-2 is a remarkable piece of audio technology that combines advanced digital processing with high-quality amplification. Whether for casual listening or serious audio pursuits, the HDP-2 delivers an unparalleled listening experience that is sure to satisfy even the most discerning music lovers. Its comprehensive features and exceptional sound quality make it a standout choice in the realm of DACs and headphone amplifiers.
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