Transforming Your Extension Speaker: A Comprehensive Guide to the bhi NEDSP1962-KBD Retrofit Module

The bhi NEDSP1962-KBD module is a pre-wired retrofit PCB module which transforms ordinary extension speakers into powerful amplified DSP noise-cancelling units, using our unique DSP noise cancelling technology. Designed for versatility, it integrates seamlessly with existing audio setups, offering users a significant upgrade without the need for extensive equipment overhaul. The bhi technology reduces background noise and improves clarity. For radio enthusiasts, professionals in noisy environments, or anyone seeking clearer audio, the NEDSP1962-KBD opens up new possibilities in sound quality enhancement.

Learn more about the bhi NEDSP1962-KBD below and order online today. Any questions? Get in touch and we’d be happy to give you more information.

Key features of the bhi NEDSP1962-KBD

The NEDSP1962-KBD is supplied with a complete installation kit with mounting pads, tyraps, rubber sleeves and professional labels to finish the install off. At the heart of the NEDSP1962-KBD lies its advanced DSP noise cancelling capabilities. The module boasts 8 user-selectable filter levels, allowing for fine-tuned noise reduction between 9 and 40dB. This flexibility ensures optimal performance across various audio environments. With its compact size of 71mm x 50mm x 20mm, it fits into most speaker enclosures. The module operates on a wide voltage range (10-18V DC), making it compatible with numerous power sources. A standout feature is its audio bandwidth of 50Hz - 4.5kHz, which covers the essential frequency range for clear voice communication. The NEDSP1962-KBD also includes an audio bypass function.

How DSP noise cancellation technology works

DSP noise cancellation in the NEDSP1962-KBD operates on sophisticated algorithms that differentiate between desired speech signals and background noise. The process begins with the module analysing the incoming audio stream in real-time. It identifies the speech signals, and once identified, the user can selectively attenuate the noise, such as static, hum, or environmental sounds, to suit their current conditions while still preserving the integrity of the speech. This selective approach ensures that important audio details remain intact. The NEDSP1962-KBD's DSP technology is particularly effective at enhancing speech clarity, making it invaluable for radio and voice communication systems where understanding every word is crucial.

Compatibility with extension speakers

The NEDSP1962-KBD's versatility shines in its compatibility with a wide range of extension speakers. It's designed to integrate with speakers commonly used in amateur radio setups and marine communications. The module can be fitted to speakers with impedances typically ranging from 4 to 16 ohms, covering most standard extension speaker specifications. When selecting a compatible speaker, consider factors such as power handling capacity and physical dimensions to ensure optimal performance and fit.

Installation process overview

Installing the NEDSP1962-KBD module requires some technical skill but is achievable for most enthusiasts. The process typically involves opening the extension speaker enclosure and identifying an appropriate mounting location for the module. Careful consideration of wire routing is essential to avoid interference. The module connects to the speaker's existing wiring, usually requiring soldering for secure connections. Power can be supplied either through the audio input cable or via a separate power source, depending on the specific setup. The product comes with detailed installation guides, which users should follow closely to ensure proper functionality. For those less confident in their technical abilities, seeking assistance from experienced installers or audio professionals is recommended.

It's important to note that some customers may prefer not to modify their extension speakers. In such cases, we offer alternative solutions that don't require physical alterations to the speaker. These include in-line modules such as the In-line Module, the Dual In-Line, or the EQ20-DSP. These external modules provide the same noise-cancelling benefits without the need for internal installation, offering a flexible solution for users who want to preserve their speakers' original condition.

Performance improvements in various environments

The NEDSP1962-KBD excels in enhancing audio clarity across diverse environments. In marine settings, it effectively combats engine noise and water sounds, dramatically improving radio communications at sea. For amateur radio operators, the module proves invaluable in cutting through atmospheric interference and static, especially during long-distance communications. In noisy industrial or construction environments, the NEDSP1962-KBD helps in isolating important voice communications from machinery background noise. Even in quieter settings like home offices, users report significant improvements in audio quality during online meetings or while listening to podcasts. The module's adaptability to different noise profiles makes it a versatile solution for various audio challenges.

Customisation options and settings

The NEDSP1962-KBD offers users a range of customisation options to tailor the audio experience to their specific needs. The 8 selectable filter levels allow for fine-tuning of noise reduction intensity, from subtle enhancement to more aggressive noise cancellation. Users can adjust these settings via a small switch on the module, typically accessible through a small opening in the speaker enclosure. Some installations may incorporate external controls for easier access. The module also features adjustable input and output gain settings, enabling users to optimise volume levels and prevent distortion.

Comparing NEDSP1962-KBD to Other bhi Products

Within bhi's product lineup, the NEDSP1962-KBD stands out for its retrofit capabilities. Unlike standalone speaker units like the NES10-2 MK4 speaker or DESKTOP MKII speaker, which come pre-equipped with bhi DSP noise cancelling technology, the NEDSP1962-KBD allows users to upgrade existing passive loud speakers. It offers similar noise reduction capabilities to our in-line modules but with the advantage of internal installation, reducing clutter. Each product in our range caters to specific use cases, with the NEDSP1962-KBD filling the niche for users looking to enhance their current speaker setups without full replacement.

User Experiences and Testimonials

Users of the NEDSP1962-KBD consistently report significant improvements in their audio experiences. We recently had an excellent review of our NEDSP1962-KBD loudspeaker install module in October 2024 issue of RadCom magazine.

The reviewer concluded “I have had an opportunity of using the NEDSP1962-KBD on a number of rigs on all of the HF bands (except 30m) and in my opinion it does reduce noise very significantly and can make signals which are already noisy clearly readable. Furthermore, it can reveal signals hidden in the noise. By this I mean that, if the board is switched off and there is the usual background noise, switching on the unit will reveal a station obscured within the noise and make it workable. I am impressed by the system and have already approached Graham about buying one for myself”.

Shop the NEDSP1962-KBD online

Ready to transform your audio experience with the NEDSP1962-KBD? Don't miss out on this powerful DSP noise cancelling module. Visit our online store to purchase your NEDSP1962-KBD today. Upgrade your extension speaker now and experience the difference that advanced DSP technology can make.