HarryO Posted January 25, 2010 Posted January 25, 2010 I picked up a "cute" tube preamp with an issue and can't find any info on it. I need a schematic to run down an issue in the output circuit. Any help identifying the company or resource for a schematic would be appreciated. Brand: "Soundstage" model: Vacuum Two. Pics to follow Harry Quote
HarryO Posted January 25, 2010 Author Posted January 25, 2010 OK, I got the Soundstage preamp fixed. It was only the 2.2 ohm 2w resistor. When I desoldered the burnt resistor one of the legs wasn't even soldered (SEE PIC) and I'm thinking that could have been the problem to begin with. I replaced the resistor and have been playing it out about 3 hours now with no issue. Playing quiet and strong with both channels balancing out even. Ok, I read the reviews on this unit and I'll have to agree with the "Bright" statement. It is edgy with the Russian military tubes in it. It's so harsh on top I didn't care for the sound of the preamp at all. I didn't give up and put a pair of 6922 Tele's in it and it's a heck of a sounding line stage now. The "Nasty" came from the tubes. It's a good soundin preamp now and I did notice on this unit that IC's and power cords DO make a huge difference. So much a difference it's almost as noticable as rolling out the tubes. These are very basic and simple preamps with good heavy iron in them. Cosmetics are a forethought on these to help sell them. They're a solid chassis with decent components in them. I"m sure that the French Capacitors could be better but overall for the buck not a bad unit. Quote
runninshine Posted January 27, 2010 Posted January 27, 2010 Nice job on the diag. Hope you like it. Quote
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