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Sansui RA-500

Reverberation Amplifier (1977-86)

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Sansui RA-500

Specifications

Rated output voltage: 300mV

Maximum input voltage: 3V

Harmonic distortion: less than 0.2%

Frequency response: 20 to 30,000Hz

Signal to noise ratio: 65dB

Reverberation time: 1.9 to 3.2 sec

Semiconductors: 11 x transistors, 3 x diodes

Dimensions: 320 x 162 x 265mm

Weight: 5.2kg

Downloads

service manual  English

brochure  English - danickd

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Reviews

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rating
Submitted by mensajero773

El amplificador de reverberación RA500 tiene una estructura metálica muy buena y de gran resistencia al tiempo embutida en una caja de madera multicapa. Posee entrada y salida de línea y la conexión para dos decks a cassette. Los circuitos de amplificación son de estado sólido y la fuente posee un buen filtrado, lo que garantiza un bajo nivel de ruido. El sistema de reverberación que no llega a ser eco está basado en el antiguo sistema de resortes, uno para cada canal unidos a tranductores. El sonido al viajar por los resortes sufre un ligero retrazo y los circuitos mezclan la señal directa con la de la caja de reverberación. Ha sido muy útil para introducir un efecto de espacialidad y amplitud en los ambientes que estan cubiertos con mucho objetos fonoabsorbentes como alfombras, sillones y cortinados. También se ha usado para agregar un efecto novedoso, especialmente al variar rápidamente el mando, en las grabaciones sobre cinta magnética. Muy vistoso el sistema mecánico que iluminado mueve una imagen delante de otra para indicar cuanta reverberación se está usando. A pesar de tener 37 años muchas de estas unidades siguen funcionales al día de hoy.

 

Comments

keeping it alive

i too was in veitnam and korea in the early 70s this stuff will still blow away the audio of today..the spec on this stuff was way ahead of its time and still is..long live the good stuff..thank you for letting us keep it alive,,,,,chuck b dr.dodge aka silver bullitt

caxambu's picture

Service Manual for Sansui RA-500 Reverb Amplifier

I have tried everything that I can think of to be able to download the service manual. What I am looking for is the proper fuse to use. The unit that I have is missing this. On the back it states 100/117V - 0.5A; would this be the correct fuse to be used?
Thank you for your help.

Fuse rating

Yes, the fuse is rated @ 0.5 amp @ 100-117 vac.
Camman

sansui ra 500

HI FI IS AWESOME

Sansui RA 500 Reverb:

I spent some time in SouthEast Asia in the US Marine Corps and I had a pick of spending time away from war in a nearby country of Sasebo & Yokusko,Japan. Had a bunch of US dollars to spend tax free on whatever my heart desired and I chose to make some of my purchases in Hi-Fi equipment. At the time in 1960's thru 70's Sansui sold very well made Audio products. I bought a whole system -Amp/Rec;Tape decks,Reverbs,Speakers & Belt Drive Turntables just as 10's of 1000's soldiers & sailors did TAX FREE.I still have these old vintage audio components and lost some of the manuals through the years.It's been 40 yrs since and I just about gave up finding mauals that date back this far.I want to thank you for this it made my day! I will always keep your site handy because I now have other older manuals that are in bad shape. Most of my war buddies still have their very 1st stereo systems,it's like a war chest,you keep, store it because of memories.

This website is not affiliated with or sponsored by Sansui. To purchase RA-500 spares or accessories, please contact the company via their website or visit an authorised retailer.