oui c'est clair que ca me convient tres bien , mais si j ai bien compris ,le 6eme condos peux améliorer la réponse dans le basses et le gain des preamp et justement depassé 8/10 ..
je sais pas tu as un idée d une modif pour rajouter le 6eme condo et passer a un filtrage avec les 100uF et rajuster la tension ,la j ai pas bien capté?
bon sur ce je vais changer les lampes de preamp selon vos conseil..par contre jai les boules car les tubes de puissance ont ete changés recement et n ont que 2h de jeu..t es sur que ca vaut le coup de rechanger?
concernant la TS ou ZW-44 est ce qu'avec mon OCD (V4) est ce redondant ??...
sinon merci encore pour vos precieux conseils et eclaicissement..c'est le genre de question que j aurai du poser avant l achat
sinon j ai trouver ca , a priori le 5 capa However, during circa 1985, the design of the 100 watt JCM 800 series changed in order to cut costs. The age of the “vertical input” style of inputs as used on 2203s and 2204s for years had ended. A new “horizontal input” configuration began and this in itself only meant that the potentiometers and input jacks were now mounted directly to the printed circuit boards rather than being wired up with flying lead wires. This obviously simplified construction and in itself was NOT such a big deal, but what WAS a big deal was the change in the filtering and power supply structure of the 2203 (but NOT the 2204 - which remained unchanged) that took place later in l986 – this was also designed to reduce costs. Unfortunately, this latter change altered the tone of the amp. When looking at a “vertical input” JCM 800 2203 (or earlier JMP 100 watt for that matter) at the chassis, a total of six filter capacitors (those large “cans” that look like tubes) were previously present.
The first of the horizontal input models were basically unaffected and examples such as the one pictured below show a design with five filter caps rather than the previous six.
The primary four caps grouped together that ran as two pairs in series, was still part of the design and corresponded to Marshall's early power supply design. The circa late-1986 2203's, to reduce costs further, incorporated reduced power supply requirements and specifications and was able to eliminate one "pair" of the series-run caps, reducing the number to three filter caps total. Unfortunately these new 2203's just didn’t have the same “punch” or power levels. Sure, they were still loud, but were much more grainy and thin-sounding as they were turned up....
je sais pas tu as un idée d une modif pour rajouter le 6eme condo et passer a un filtrage avec les 100uF et rajuster la tension ,la j ai pas bien capté?
bon sur ce je vais changer les lampes de preamp selon vos conseil..par contre jai les boules car les tubes de puissance ont ete changés recement et n ont que 2h de jeu..t es sur que ca vaut le coup de rechanger?
concernant la TS ou ZW-44 est ce qu'avec mon OCD (V4) est ce redondant ??...
sinon merci encore pour vos precieux conseils et eclaicissement..c'est le genre de question que j aurai du poser avant l achat
sinon j ai trouver ca , a priori le 5 capa However, during circa 1985, the design of the 100 watt JCM 800 series changed in order to cut costs. The age of the “vertical input” style of inputs as used on 2203s and 2204s for years had ended. A new “horizontal input” configuration began and this in itself only meant that the potentiometers and input jacks were now mounted directly to the printed circuit boards rather than being wired up with flying lead wires. This obviously simplified construction and in itself was NOT such a big deal, but what WAS a big deal was the change in the filtering and power supply structure of the 2203 (but NOT the 2204 - which remained unchanged) that took place later in l986 – this was also designed to reduce costs. Unfortunately, this latter change altered the tone of the amp. When looking at a “vertical input” JCM 800 2203 (or earlier JMP 100 watt for that matter) at the chassis, a total of six filter capacitors (those large “cans” that look like tubes) were previously present.
The first of the horizontal input models were basically unaffected and examples such as the one pictured below show a design with five filter caps rather than the previous six.
The primary four caps grouped together that ran as two pairs in series, was still part of the design and corresponded to Marshall's early power supply design. The circa late-1986 2203's, to reduce costs further, incorporated reduced power supply requirements and specifications and was able to eliminate one "pair" of the series-run caps, reducing the number to three filter caps total. Unfortunately these new 2203's just didn’t have the same “punch” or power levels. Sure, they were still loud, but were much more grainy and thin-sounding as they were turned up....
