DSP cancelamento de ruído Speakers

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The bhi DESKTOP 10 watt DSP noise cancelling base station speaker will work with most radios, transceivers, receivers, and SDR radios, giving a new listening experience. The new rotary controls make it very easy to use and set up to your own operating conditions.

The DESKTOP speaker comprises a 4″ bass driver and a 1″ tweeter unit with an amplified bhi DSP noise cancelling unit capable of producing up to 10 Watts audio (peak). There are rotary controls on the side of the speaker for volume and filter level control.

The DESKTOP speaker can be connected to a stereo line level audio input signal, or to a standard speaker level audio signal from an extension speaker socket. There is a 3.5mm headphone socket below the controls that can accept either a 3.5mm mono or stereo jack plug.

The speaker is supplied with a quality 1.2 metre audio cable with a moulded 3.5mm jack plug on one end and 4mm banana plugs on the other, as well as a 2.1mm fused DC power lead and user manual.

NEW! Click here for the excellent new review of the DESKTOP DSP speaker in the Mar ’15 QST magazine

Features

- Quality 10 watt DSP base station speaker
- 4″ bass driver and 1″ tweeter for excellent audio
- Works with most radios and receivers including SDR radios
- Simple to operate with easy to two use rotary controls
- Speaker level and line level audio connections
- Audio input level overload feature
- Noise reduction 9 to 35dB (8 levels)
- All functions microprocessor controlled
- 3.5mm headphone socket (mono or stereo phones)


Specification:

DC Power
Connector type 2.1mm DC power jack (centre positive)
Input voltage 12 to 18 Volts DC
Input current 10mA standby
125mA active (no signal)
2.5A peak
Line Level Audio Input
Connector type 3.5mm Mono or Stereo line level
Input voltage range 160mV to 1.6V pk-pk
Input impedance 10kΩ (±2kΩ) nominal

Speaker Level Audio Input
Connector type 2 x 4mm banana socket/screw binding posts (mono)
Input voltage range 350mV to 3.5V pk-pk
Input impedance 8Ω (±2Ω) nominal
Input power rating 1.5W max

Audio Output
Speaker output power 10W peak (supply voltage of 18V)
Bandwidth 50Hz to 4.3kHz
Volume levels 16 levels (3dB steps)
Headphone output 3.5mm mono or stereo (8 to 64 Ohms)

DSP Noise Cancellation
Filter levels 8 levels + off
Noise reduction 9dB to 35dB
Tone reduction 4dB to 65dB

Indications
Status LED Multicolour LED (red, amber, green)
Audio tones Power-up, power-down, DSP filter level, volume and memory store
Input overload indication.
Controls
Power/Volume Digital rotary encoder with push function
DSP level Digital rotary encoder with push function

Physical
Weight 1.90kg (shipping weight)
Dimensions 200(H) x 150(D) x 160(W)mm

Note: Elecraft K3 users: To connect to the K3 using the speaker lead supplied you need to either make up an audio lead with a 3.5mm stereo plug (tip only connected) to a 3.5mm mono socket, or purchase one of our ALD-009 leads, or alternatively use a 3.5mm stereo plug to plug lead and connect from your K3 to the line in socket on the DESKTOP speaker (ALD-007).

Testimonial

“I have sometimes been a little sceptical about DSP noise cancellation, but this really does reduce noise very effectively without any annoying and distracting DSP artefacts…”

RadCom Jan ‘14 review

Geoff Blore:
“Transformed the output sound of my TS-930S providing as clear audio to match current rigs.”

Mr. B Hiley:
“The DESKTOP speaker is great, audio is crisp and clear, brilliant!”

“I just wanted to thank you for your amazing Desktop (10W) DSP Speaker. I bought it from you @ the Kempton Park Rally – I tried it for the 1st time this Sunday on a noisy 40m band and was gobsmacked! Your unit made a fine job eliminating the crud picked up by the radio. I now consider your noise eliminating speaker an essential bit of kit in my ham shack! Thank you very very much.” John G1WVN

Boas...
Todos os meus rádios tem coluna externa de 15cm diâmetro e posso dizer que o som e muito mas muito melhor...
Quanto ao ruído pelo que vi o DSP não faz muita falta pois com uns condensadores faz o mesmo efeito e corta os ruídos.

Olá,

Isto ou um equalizador vai dar ao mesmo com melhores ou piores resultados. O que uso normalmente é o filtro notch para cancelar o apito que alguns cromo insistem em colocar no ar para meter nojo.

Para mim, redução de ruído a sério, não é no áudio; É nas frequências intermédias! Aí sim! Corta-se com precisão cirúrgica e o único inconveniente está na carteira... Pois rádios com filtragem na FI ou na saída têm preços muuuito diferentes.

73 de CT7AFR, Emmanuel.

um bom equipamento, usamos hoje em nossas estações, o qrm eliminator q122, ele usa antena auxiliar e gera uma contra fase, mais este me parece ser melhor, uma pena o preço ser tão absurdo, eu vi o desenho da pci, não pode custar tanto para produzir, ou melhor a margem de lucro e muito alta uma pena. por isso nao vende.. seria bom alguem disponibilizar um esquema eletrico assim poderiamos fabricar..