Hello all!
I'm currently in the beginnings of a QUAD 44 (and 405) Pooge. It's a fairly early one, SN #63XX, I will post the board versions in another post.
I'm starting with the low-hanging fruit, PSU electrolytics, opamps, etc...
So far I have the 32yr old opamps replaced with BB OPA604's on a few of the inputs, and every PSU cap has been replaced. (there's a whopping 5 of them...)
I had to clean up my workspace (kitchen table) before I could take photos, but these seemingly meager improvements have made a noticeable improvement in the preamp. Much akin to cleaning a dirty window, it's clearer, and also less noisy.
Next will be the remaining opamps (which live on the tone control board) and the switching IC's.
I would love to hear from people who have done this and their suggestions for making the most out of this neat old preamp.
Thanks!
I'm currently in the beginnings of a QUAD 44 (and 405) Pooge. It's a fairly early one, SN #63XX, I will post the board versions in another post.
I'm starting with the low-hanging fruit, PSU electrolytics, opamps, etc...
So far I have the 32yr old opamps replaced with BB OPA604's on a few of the inputs, and every PSU cap has been replaced. (there's a whopping 5 of them...)
I had to clean up my workspace (kitchen table) before I could take photos, but these seemingly meager improvements have made a noticeable improvement in the preamp. Much akin to cleaning a dirty window, it's clearer, and also less noisy.
Next will be the remaining opamps (which live on the tone control board) and the switching IC's.
I would love to hear from people who have done this and their suggestions for making the most out of this neat old preamp.
Thanks!