Hi. About 2 months ago I converted my Cary Audio SLA 70A Signature EL34-based amp to triode mode tying back the UL tap and adding 100 ohm 1/2W metal films and I like what I heard in the conversion very much.
But to play it safe, I decided to replace these resistors with Radio Shack 100 ohm 1W metal oxide resistors. The problem is that the resultant sound changed. There's now a slight tilt in the upper mids and a grain in vocals that wasn't there previously. After about a month of listening, I decided to convert back to UL and the symptoms disappeared.
Could the resistors cause the change in sound that I heard? Also, what resistors would you recommend for this conversion? Thanks.
But to play it safe, I decided to replace these resistors with Radio Shack 100 ohm 1W metal oxide resistors. The problem is that the resultant sound changed. There's now a slight tilt in the upper mids and a grain in vocals that wasn't there previously. After about a month of listening, I decided to convert back to UL and the symptoms disappeared.
Could the resistors cause the change in sound that I heard? Also, what resistors would you recommend for this conversion? Thanks.