Noise Reduction Unit KDB3
Kelly Acoustics Ltd.; Enfield
- País
- Gran Bretaña (GB)
- Fabricante / Marca
- Kelly Acoustics Ltd.; Enfield
- Año
- 1973 ?
- Categoría
- Amplificador de audio o mezclador
- Radiomuseum.org ID
- 354039
- Numero de transistores
- Hay semiconductores.
- Semiconductores
- Gama de ondas
- - no hay
- Tensión de funcionamiento
- Red: Corriente alterna (CA, Inglés = AC)
- Altavoz
- - Este modelo usa amplificador externo de B.F.
- Material
- Metálico
- de Radiomuseum.org
- Modelo: Noise Reduction Unit KDB3 - Kelly Acoustics Ltd.; Enfield
- Forma
- Sobremesa de botonera.
- Ancho, altura, profundidad
- 15.5 x 8 x 3.25 inch / 394 x 203 x 83 mm
- Anotaciones
-
Kellar Electronics' KDB3 Noise Reduction Unit simplifies the Dolby B experience for home recordists while offering a valuable addition: an FM notch filter. This filter eliminates unwanted interference from FM radio signals that can sometimes be picked up by tape recorders.
KDB3 Specifications:
- Simplified Controls: Featuring two-line inputs controlled by a single master record control lever, the KDB3 prioritizes ease of use. It also has two-line outputs with a 10dB switchable attenuator for adjusting signal level.
- Comprehensive Metering: Complete metering facilities for both recording and playback allow users to monitor signal levels during the recording process.
- Built-in Oscillator: A 400Hz oscillator is integrated for calibration and performance checks.
Technical Specifications:
- Record section input sensitivity: 25 mV for Dolby level at 20 kΩ
- FM notch filtering: 19 kHz and 38 kHz to prevent interference
- Frequency response: 20 Hz to 15 kHz ±1dB, 19 kHz -36 dB
- Output to tape recorder inputs: 580mV for 25mV input (adjustable by record/calibrate controls) with a minimum load of 5 kΩ
KDB1 & KDB2: Additional Options for Noise Reduction
Kellar Electronics offers two other Dolby B Noise Reduction Units catering to different needs:
- KDB1: Ideal for home recorders with a combined record/replay head, the KDB1 features a record/replay switch for user convenience.
- KDB2: Designed for professional-grade tape recorders with separate record and playback heads (commonly found in three-head machines), the KDB2 boasts two completely separate record and playback channels. This critical feature allows for real-time monitoring of the recording through the playback head while the recording is still in progress on the separate record head. This is a significant advantage for professional users who can adjust recording parameters based on the monitored output. Additionally, the KDB2 offers full two-channel operation for stereo recordings.
Choosing the Right KDB Unit:
- KDB1: Best for home recorders with a combined record/replay head.
- KDB2: Ideal for professional users with three-head machines and a desire for real-time recording monitoring.
- KDB3: Perfect for users seeking a streamlined Dolby B experience with FM notch filtering, suitable for both home recordists and professionals who value user-friendliness while maintaining high-fidelity performance.
- Precio durante el primer año
- 39.00 GB £
- Mencionado en
- -- Original prospect or advert (Practical Wireless Jan 1973, Page 796)
- Autor
- Modelo creado por Gary Cowans. Ver en "Modificar Ficha" los participantes posteriores.
- Otros modelos
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Donde encontrará 7 modelos, 7 con imágenes y 1 con esquemas.
Ir al listado general de Kelly Acoustics Ltd.; Enfield