Editing RFT B9281

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==Data==
 
'''General'''
 
* Type: 3-way compact speaker
 
* Manufacturer: RFT
 
* Manufactured in: DDR
 
* Net volume: 10 l
 
* Dimensions (W x H x D): 236 x 341 x 225 mm
 
* Mass: 8,8 kg
 
* Price per box: 405,- M
 
  
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== Technische Daten ==
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Nennbelastbarkeit: 35 W
  
'''Technical data'''
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Musikbelastbarkeit: 50 W
  
* Rated power: 35 W
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Impedanz: 4 Ohm
* Maximum power handling: 50 W
 
* Nominal impedance: 4 Ohm
 
* Frequency range: 50 - 18000 Hz
 
* Crossover frequencies: 800 Hz; 5.5 kHz
 
* Sensitivity: 86 dB
 
* Operating power: 10 W
 
* Length of connecting cable: 4 m
 
* Net volume: 10 l
 
  
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Maße: 235 mm × 340 mm × 225 mm
  
==Notes==
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== Geschichtlich/technischer Hintergrund ==
'''Historical/Technical Background'''
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Die B 9251 wurden ab 1978 im Funkwerk Köpenick für Stern Radio Sonneberg produziert. Erstmals in einer Kompaktbox kam ein 40-W-Tieftöner zum Einsatz. Der L 2921 (4 Ohm) basiert auf dem L 2911 der Rema-Toccata-Boxen. Hierbei wurde allerdings ein 12-cm-Magnet sowie eine verstärkte Tauchspule und Membran verbaut. Der etwas unterdimensionierte Hochtöner L 5904 (8 W / 8 Ohm) wurde von den Toccata unverändert übernommen. Durch diese Bestückung und die kleinen Gehäuse klingen die Boxen sehr basslastig und eignen sich am besten für höhenbetonte Verstärker mit hoher Ausgangsleistung wie die Sensit-Steuergeräte. Die B 9251 sind mit einer Nennbelastbarkeit von 35 W angegeben und wiegen je 7,5 kg.
<br>
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The B 9251 were produced at the Funkwerk Köpenick for Stern Radio Sonneberg from 1978 on. For the first time in a compact speaker a 40 W woofer was used. The L 2921 (4 Ohm) was based on the L 2911 of the Rema Toccata boxes. However, a 12 cm magnet and a reinforced plunger coil and diaphragm were used. The somewhat undersized L 5904 tweeter (8 W / 8 Ohm) was taken over unchanged from the Toccata. Due to this configuration and the small cabinet the speakers sound very bass-heavy and are best suited for amplifiers with high output power like the Sensit control units. The B 9251 are rated at 35W and weigh 7.5kg each.
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== Weitere Quellen ==
==Pictures==
 
==Links==
 
 
http://www.rft-hifigeraete.de/9465.html
 
http://www.rft-hifigeraete.de/9465.html
==Reports==
 
 
[[Category:Loudspeaker]]</br>
 

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