bhi Loudspeaker

bhi Ltd is a small but select manufacturer of audio products from Great Britain. bhi develops and manufactures products for noise elimination in communication systems, including loudspeakers and modules for integration in other systems. For this goal the latest DSP technology is used, as it provides the best results at small space and low power requirements. Typical application areas are public and security services, military, amateur radio, aviation radio and other communication systems.


Download: bhi Selection Guide (PDF, EN, 2.3MB)

Desktop Loudspeaker

The Desktop loudspeaker greatly improves the intelligibility of any voice communications, by it amateur radio on shortwave or mobile radio (PMR, police etc.) on VHF/UHF. The large speaker is intended for stationary use with practically all radios, what's required is just a loudspeaker or line jack (separate inputs) on the radio and a power supply. Equipped with a 4" base driver and a 1" tweeter, in conjunction with the ingenous noise reduction technology, the Speaker offers stress free listening over long periods of time.

The filter curve can be easily adjusted similar to the Volume via a knob on the side. The built in 10 W RMS amplifier provides a good signal evident even in noisy environments. In addition, the speaker still has a headphone jack.

Included in the shipment is a 1.2m long connecting cable to the speaker jack of the readio, equipped with a 3.5 mm phone plug, plus a power supply cable with fuses. The power requirements of the Desktop speaker is 12 to 18 VDC at max. 2,5A. With the equally included mounting bracket the loudspeaker can be mounted to the wall, when used on the desk the bracket can be removed.

Technical Data
Output power 10 W (RMS)
Power supply 12 - 18V DC
Power consumption max. 2,5A
Impedance 8 Ω
Input power min. 80-500mW
Line-In
Power connector 2,1 mm DC coaxial socket
Audio connector 1.2m cable with 3.5 mm phone plug
Order No.
NE-DESKTOP Desktop Loudspeaker 189.00 € Buy now
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Download: NE-Desktop Review QST (PDF, EN, 1.1MB)

DSPKR Loudspeaker

Low profile DSP loudspeaker with large diameter (c. 10cm) for rich audio. The proven DSP technology by 'bhi' does the trick: with the push of a button you select one of 7 levels of noise reduction. This gives you the perfect adaption for every situation. Very easy to operate and ideally suited for amateur radio, in a taxi, for police or fire brigades, anywhere where wireless is used. And of course especially useful in a vehicle...
Built in is a powerful 10 W RMS amplifier, which greatly helps in a car or another noisy environment. The large volume control sits conveniently on top of the case, just besides the other controls (push button, LEDs). At the side a 3.5 mm phone socket offer connection for an additional loudspeaker or for headphones.
A sleepmode helps to conserve power, an evermore important feature wether in the car or at home. With a single touch of the push button the DSPKR comes back to work... Protection circuits against overcurrent and wrong polarity assure an easy installation.
Please note that this loadspeaker was designed for optimal voice audio reproduction, and is nit very well suitable for music.

Technical Data
Output power max. 10 W RMS
Power supply 10 - 16V DC
Power consuption max. 2A
Impedance 8 Ω
Input level min. 80-500mV, max. 6W
External loudspeaker connector 4 Ω, 3.5 mm Mono Klinkenbuchse
Power connector 2.1 mm DC connector coaxial
Audio connector 2m cable with 3.5 mm phone plug
Order No.
NE-DSPKR DPSKR Loudspeaker 139.00 € Buy now
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DSP loudspeaker and modules

Loudspeaker NES-10-2 Mk3 with built-in DSP filter. These loudspeakers are suited for HF and VHF use to reduce static, background noise etc. The comprehensibility is greatly enhanced, fatigue when listening for extended periods is avoided.

The model NES-10-2 allows for a variation of the DSP filter level in 8 steps (DIP switches on the rear of cabinet). Additionally the model NES-10-2 offers a volume control, On/Off switch for the DSP function and a 3.5 mm mini jack for connection of a headphone or an additional external speaker.

Both models come with a 2m AF cable with 3.5 mm mini plug (mono) and must be supplied with 12 to 28V DC, a DC cable is supplied. The supplied mounting bracket is helpful for installation in a car or at home.

NES-10-2 with On/Off(Bypass) switch on bottom side
Order No.
NES-10-2 DSP Loudspeaker NES-10-2 Mk3 115.00 € Buy now
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NE-D-INLINE noise eliminating module

7 watt stereo/dual channel DSP noise eliminating In-line module

The new bhi Dual In-Line DSP noise eliminating module provides two channel/stereo noise cancellation, and is suitable for use on all radios and receivers including SDR, especially those with stereo or two channel output options. It can also be used with standard mono speaker input and output signals. The new Dual In-Line module incorporates bhi's new dual DSP noise cancelling module, which has an improved noise cancelling algorithm that brings even better quality audio to the listener when operating in very noisy conditions. The processed speech is clearer and more intelligible as a result.

Order No.
NE-D-INLINE 229.00 € Buy now
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NEIM-COMPACT Noise Reduction Module

NEIM COMPACT

The NEIM-Compact is a smaller module for noise reduction by bhi, which uses two internal "AA" size batteries or external DC power. With the battery operation this module is particularly suitable for mobile or portable operations during a vacation. The NEIM-COMPACT takes a stereo or two independent mono signals, the actual noise reduction is done with thewell known DSP system by bhi. The greatly enhances the intelligibility of voice modulation, and reduces fatigue induced due to long listening durations e.g. on shortwave.

The NEIM-Compact module accepts either loudspeaker or line-out level input signals, on the output side a headphone or small loudspeaker can be connected. The operation is done very easy with two dial knobs for adjusting the volume and the filter levels. Due to the flexible design of input signals the module can be used with any type of radio or receiver, either classical or SDR type. The power supply is done either by two internal AA size alkaline or NiMH rechargeable batteries, or by supplying external 8 to 16V DC. Operating time with batteries is approx 40 hours, the device turns off automatically after one hour when not used.

Order No.
NEIM-COMPACT bhi Noise Eliminating Module NEIM-Compact 189.00 € Buy now
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NEIM-1031 Noise reduction module

NEIM-1031 with horizontal labelling
NEIM-1031 Stand Stand for NEIM-1031

Take advantage of latest DSP technology also without the loudspeakers, with the NEIM-1031 DSP noise elimination module. Utilizing the same DSP technology as the above shown loudspeakers but has several connections for audio in- and output. With these connections the NEIM-1031 can be easily integrated into any existiing audio system.

  • Inputs: Line-In and loudspeaker input
  • Outputs: Line-Out, loudspeaker and headphone
  • DSP with 8 different levels of noise reduction
  • Volume control
  • Power requirements 12 to 24V DC, 500mA

To use the NEIM-1031 in a horizontal position, we offer a sticker with horizontal labelling (instead of vertical).

Order No.
NEIM-1031 Noise Reduction Module 157.00 € Buy now
NEIM-1031.H Sticker for NEIM-1031, horizontal 7.50 € Buy now
NEIM-1031.ST Stand for NEIM-1031 13.00 € Buy now
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NEDSP-1061 AF DSP Noise elimination module

Bild NEDSP-1061

Stamp size PCB (30x38mm) for internal use in most radios. Uses the same DSP technology as the well known loudspeakers. The module is simply installed in the AF line. Potentiometers for input and output lines are provided for required adjustments to different rigs. A LED serves as a tuning aid. 4 different filter shapes (or none) are selectable with one button.
This module is especially suitable for installation in the FT-817 transceiver. Due to it's small size it fits into the unit without sacrificing any space, say for the battery or similar. The control button and LED are mounted in the upper cover of the FT-817.

Order No.
NEDSP-1061 116.00 € Buy now
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Installation in FT-817 ready for use available, please call.

NEDSP-1062 AF DSP Noise elimination module with amplifier

Bild DSP Modul
NEDSP-1062 integrated into Yaesu SP-8 loudspeaker (not included)
Bild DSP Modul

NEDSP1062 Amplified DSP Noise Eliminating PCB Module - This module incorporates an on board power amplifier and has an integral microcontroller connected to a small keyboard assembly. The microcontroller and keyboard provide single button operation of all the module's functions. The module can be retrofitted into the speaker path of extension speakers like the Kenwood SP31, Yaesu SP8 and Icom SP20/21/23, or used to 'revive' your old receiver/transceiver by fitting the module into the speaker path of your equipment (space permitting). The module is supplied with Generic Instructions, a fused DC power lead, fitting kit and specific fitting guides for the Kenwood SP31 and Yaesu SP8. Requires 12-18V, includes cable and fuse.

Order No.
NEDSP-1062 AF DSP Noise reduction module 128.00 € Buy now
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NE-ANEM Noise Away module for direct integration before a loudspeaker

DSP Modul ANEM
DSP Modul ANEM

New DSP module with amplifier, for integration into the loudspeaker cable. No mechanical work required, just plug it into the cable to the external speaker and supply with 12VDC. Reduces noise in all modes, eight filters selectable, integrated amplifier, DSP bypass function (Off), can be installed anywhere with Velcro™. 1 cable with 3,5 mm connectors is included.

The ANEM unit was developed as a result of feedback from potential customers of the NEDSP1062-KBD pcb module. These customers felt that they did do not have the skills, or didn't want to drill holes into their beloved extension speaker or radio to fit the NEDSP1062-KBD. As a result of some market research, we decided to fit the NEDSP1062-KBD pcb module into a small black compact ABS box, allowing these customers to put the unit close to, under, or even fix the ANEM to their speaker by means of velcro (supplied with the unit). It also complemented the fully featured bhi NEIM1031 in-line module because the ANEM has just two push button controls for all the DSP functions, and is more of a "plug and go" unit, whereas the NEIM1031 is more of a "plug and play" unit, with separate controls for all the functions.

Order No.
NE-ANEM plug and play DSP filter 154.00 € Buy now
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NE-1042 Loudspeaker/AF switchbox

Small switchbox with 6 inputs (three of them terminated to 8 Ω) and one output (or vice versa). For connection of several radios to one DSP loudspeaker. Connections 3.5 mm phono plug, includes 2 cables 120cm.

Order No.
NE-1042 AF switchbox 45.00 € Buy now
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NE-MINISW Mini switchbox

Small compact two-way switch box enabling the connection of two separate radios to your bhi DSP noise cancelling product:
Inputs: 2 x Mono 3.5 mm Jack sockets. Output: 1 x 3.5 mm mono jack socket & 1 x 3.5 mm mono jack plug lead. Power handling: 3 Watts Maximum. Unused input is always terminated with a load to protect your audio outputs. Velcro pads are supplied to enable securing of the Mini Switch to your radio equipment.

Order No.
NE-MINISW Mini switchbox 28.00 € Buy now
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Demo Sound Files

Here you find audio files that demonstrate the effect of the bhi DSP loudspeaker and DSP filter. These examples apply on all bhi products since all devices use nearly identical DSP-chips.

Demo Soundfile #1, German Level 7
Demo Soundfile #2, German Level 6
Demo Soundfile #3, English Level 6
Demo Soundfile #4, English Level 5
Demo Soundfile #5, CW Level 6
Demo Soundfile #6, CW Level 3
Demo Soundfile #7, CQDX Level 6


Sound files to compare on your own, with and without DSP loudspeaker.

Demo Soundfile #8, 20m-Band
Demo Soundfile #9, CW, 40m-Band
Demo Soundfile #10, CW, 40m-Band
Demo Soundfile #11, CW, 40m-Band
Demo Soundfile #12, CW, 40m-Band
Demo Soundfile #13, CW, 20m-Band
Demo Soundfile #14, CW, 80m-Band