chrisand4
Not cheap, just thrifty..
Hello all,
This SM-320 was posted on bartertown recently for a great price considering the condition. I’ve been looking for another tube/amp receiver lately and thought this one would be a challenge to restore.
The seller had already tested it out with a variac and had a video of it playing, so I knew it would work in some capacity. I unboxed it today, checked it with a dbt, and brought it up on the variac.
I didn’t know what to expect, but I was pleasantly surprised with how great this thing sounds even in its current condition...I mean it sounds as good if not better than some of the other gear I have around. I played it for around 10 minutes and everything seems to be working. The big resistor directly in the middle of most of the rust did get pretty warm, not surprisingly as I’m sure it has drawn in some water/moisture and cooked at some point. I’m done playing with it for now until after the rebuild, I still have an AU-717 waiting on a recap, but this one is next, and I can’t wait to start on it.
Anyway, the point of the thread. There doesn’t seem to be much, if any information out there on this model. Does anyone have knowledge to share or maybe a schematic? Any help is appreciated.
This SM-320 was posted on bartertown recently for a great price considering the condition. I’ve been looking for another tube/amp receiver lately and thought this one would be a challenge to restore.
The seller had already tested it out with a variac and had a video of it playing, so I knew it would work in some capacity. I unboxed it today, checked it with a dbt, and brought it up on the variac.
I didn’t know what to expect, but I was pleasantly surprised with how great this thing sounds even in its current condition...I mean it sounds as good if not better than some of the other gear I have around. I played it for around 10 minutes and everything seems to be working. The big resistor directly in the middle of most of the rust did get pretty warm, not surprisingly as I’m sure it has drawn in some water/moisture and cooked at some point. I’m done playing with it for now until after the rebuild, I still have an AU-717 waiting on a recap, but this one is next, and I can’t wait to start on it.
Anyway, the point of the thread. There doesn’t seem to be much, if any information out there on this model. Does anyone have knowledge to share or maybe a schematic? Any help is appreciated.
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