02-01-2017, 05:44 PM
(02-01-2017, 05:30 PM)Ezel78 a écrit : J'ai été voir sur le site Heed, sur la dernière version de l'Obelisk SI et ce n'est plus "non-DC coupled" comme on pouvait le lire avant mais "RC coupled". Alors les électroniciens ? Ca veut dire quoi RC coupled ?
http://heedaudio.com/obelisk-line/
ps: excusez-moi de ne pas jouer au jeu mais j'aime pas perdre!
Bonjour Ezel,
C'est ça:
http://electronicspost.com/explain-worki...amplifier/
Advantages of RC Coupled Amplifier
- It has a great frequency response. The gain is uniform over the audio frequency range which is important for speech, music etc.
- It employs only resistors and capacitors which are cheap, hence, it has low cost.
- The circuit is very compact due to the small size and light weight of resistors and capacitors.
Disadvantages of RC Coupled Amplifier
- The RC coupled amplifiers have low voltage and power gain. Because, the low resistances presented by the input of each stage to the subsequent stage decreases the effective load resistance and hence decreases the gain.
- These amplifiers become noisy with age, particularly due to moist.
- Impedance matching is poor because the output impedance of RC coupled amplifier is several hundred ohms whereas the input impedance of a speaker is only few ohms.
Préampli passif Hattor Big (Takman REX) w. Alim linéaire J92 Reddo Audio + Hattor tube stage (ECC82 GE Triple Mica) + Benchmark ahb2 - DAc AudioGD M7S - Lecteur Primare CD31 - Streamer Mano Ultra sur pieds Soundcare - Enceintes Dali Euphonia MS4 sur pieds Soundcare - Câblage hp Legato Referenza Superiore, modul Rastacable 4SE by Rastabill, Espace Musical Muse2 - Tidal Hifi et DD de 2To de zik