AVA "Ultimate Stereo 70"

Thumbnail for Audio by Van Alstine "Ultimate Stereo 70" Rebuild Kit - Capacitors - Laid out in order - Here are all the new capacitors supplied with the Audio by Van Alstine "Ultimate Stereo 70" rebuild kit, laid out in "Parts List Order." The top row of capacitors are film and mica capacitors. The blue "box-style" capacitors are the new coupling capacitors, the black cylinders are the electrolytic capacitors and the yellow disc capacitor will be used when we rebuild the Stereo 70 chassis.
Thumbnail for Audio by Van Alstine "Ultimate Stereo 70" Rebuild - Completed Driver Board - Here is the Audio by Van Alstine "Ultimate Stereo 70" Driver Boad with all components installed. Just a few details remain before we can call *this* part of the rebuild done!
Thumbnail for Audio by Van Alstine "Ultimate Stereo 70" Rebuild - Unclipped component leads. - All the parts are mounted and soldered. Now, all we have to do is clip the component leads and then check for solder bridges. Then, we'll clean the remaining "flux" off the Printed Circuit board.
Thumbnail for Audio by Van Alstine "Ultimate Stereo 70" Upgraded Output Connectors - Top View - Here is a picture of the assembled Upgraded Output Connectors for the "Ultimate Stereo 70" rebuild. Note that the holes in the posts are aligned vertically to minimize the chance of a short between wires and to allow the use of "pin plugs."
Thumbnail for Audio by Van Alstine "Ultimate Stereo 70" Upgraded Output Connectors - Front View - Here is a picture of the completed Upgrade Connector for one channel of the "Ultimate Stereo 70." The other one is identical.
Thumbnail for Audio by Van Alstine "Ultimate Stereo 70" Upgraded Output Connectors - Rear View - Here is a picture of the Upgraded Connectors for the "Ultimate Stereo 70." This is a picture of the back of the installed 5-way binding posts.
Thumbnail for Audio by Van Alstine "Ultimate Stereo 70" Upgraded Output Connector Substrate - Cleaned - Here is a picture after cleaning the substrate. Now things are nice and shiny!
Thumbnail for Audio by Van Alstine "Ultimate Stereo 70" Upgraded Output Connector Substrate - As furnished - Here is a picture of the substrate for the Upgrade Output Connectors for the "Ultimate Stereo 70." Since the material is made from copper-clad Printed Circuit board material, the copper has oxidized. This is normal, but we're going to clean it until it shines!
Thumbnail for Audio by Van Alstine "Ultimate Stereo 70" Upgraded Input Connectors - Rear View - Here is a picture of the Upgraded Input connectors for the "Ultimate Stereo 70." Black is for the Left channel, Red is for the Right Channel.
Thumbnail for Audio by Van Alstine "Ultimate Stereo 70" Upgraded Input Connectors - Front View - Here is a picture of the completed Upgrade Input Connectors for the "Ultimate Stereo 70." Note that this board will cover the hole where we will eliminate the obsolete Stereo/Mono Switch.
Thumbnail for AVA "Ultimate Stereo 70" Donor Chassis Filter Capacitor - Notice the Voltage rating? This is simply asking for an EXPLOSIVE failure. We need more VOLTS!
Thumbnail for AVA "Ultimate Stereo 70" Donor Chassis Driver Board - Top View - Here is the Driver Board from the Donor Chassis we are going to use for our "Ultimate Stereo 70" build. As you can see, this one has already been treated to an "upgrade" of dubious quality. It's HIGHLY doubtful that it could survive a second upgrade attempt.
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