Projet ssl9K avec pcb AFien

Hors sujet : Pour moi un vu-mêtre ne sert à rien, car derriere le préampli, il y a une table de mixage, une carte son, ... qui à un vu-mêtre en entrée, donc le réglage du volume du préamp, se fait par rapport au vu-mêtre d'entrée, et non pas celui de sortie du préamp ...

Citation :
The only important spec for the TL052 is the offset voltage and current, both of which had to be as low as possible. No audio passes through these at all - they are only to generate a DC 'servo' voltage to avoid the need for output coupling capacitors (Dave hated coupling capacitors!). There probably are much better devices around now.
At first glance I don't think any of the capacitors are very critical for type in terms of audio performance (except the 2u2 input caps), most of them are there to achieve a dead flat high frequency response - we're talking 200kHz not 20kHz so any effects a dodgy dielectric produces should only be of interest to highly trained bats. As suggested the smaller ones should be ceramic. The 470n can be anything you like - they're to produce the DC 'servo' voltages so they don't pass audio. The 330pf and 470pf I probably would use some sort (any sort) of plastic film type, but to be honest I would be very surprised if anyone noticed if they were ceramic. But I'll have a bit more of a think when I'm awake.
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The 3p3s, 10ps and 100ps don't need to be NPO/COG, any old ceramic will do, for highest performance the others up to 470p could be. (Because NPO/COG capacitors are very stable with temperature this stops any high frequency phase differences between the two halves of the balanced channel. But it is probably me being a bit perfectionist!)
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In answer to the question way above, the reason for using ceramics is (to put it simply) they keep their capacitance up to very high frequencies - well into the MHz - and the challenge with 5534s is to stop them turning into radio transmitters which is what the really small value capacitors are for. Otherwise ceramics are dreadful for audio due to their distortion, but this is only a problem if the capacitance is starting to have an effect seriously down into the audio band, which none of these are.

Citation : Concernant les capas : celle les capas C84 et C68 doivent être de qualité. Toutes les autres ne sont pas dans le chemin du signal !

Citation : Si qq'un arrive à trouver des composants genre capas ou IC, je fais du troc contre pcb ou composants.

Hors sujet : Sinon, est-ce que tu saurais me fournir une alim symétrique +17,5 -17,5V pour alimenter 4 tranches de console Amek scorpion? Je recherche aussi des SSM2015.... c'est des composants 14 broches. Il m'en faudrait 2 si tu as.
Le lien vers mon thread: Racker des tranches de console, schéma de l'alim par Chimimic

Hors sujet : Hu, attention, pas du 18V, mais bien du 17,5V.... c'est écrit sur le shéma. Bah les composants, je ferais une commande à Seletronics, et j'ai des plans pour faire faire mon PCB. En tout cas thank de consacrer ton précieux temps!

Hors sujet : Ouais, j'vais voir pour confirmation avec Chimimic, si son alim est bien au point.
Voilà son lien: Alim symétrique Chimimic
Dit moi si tu veux que je t'achètes les composants nécéssaires, de toute façon, faudra que je commande des trucs chez Seletronics au cas où!