PC 128 RAM Based Digital Bin $6,000

$1,200 for a fully equipped Personal Computer configured to support the PC 128 card (no monitor)

$ 200 for an LCD Monitor for the PC 128 Card and computer

Introduction

For the first time in history, an off-the-shelf computer can be turned into a Digital Bin for audio cassette duplication. The PC 128 is a single card, 4-channel digital to analog conversion unit operating at 3 predefined speeds from 32:1 to 128:1. Currently, configurations are predefined in 3 formats:

“A” format, with 64-80-100x speeds

“B” format, with 80-100-128x speeds,

“C” format, with 32-64-80x speeds.

Computer Requirements

Quantity	Description
1	Intel 965 RY Motherboard
2	2GB DDR2-667MHz Memory for a Minimum of 4 GB
1	160GB HD - Hard Disc Drive
1	7300 GS 256 MB PCle Video Card
1	Pentium D 930 - 3.0 GHZ Dual Core Processor
1	Case with Power Supply
1	18X DVD-RW Optical Drive
1	Windows XP Pro SP2 Operating System

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Software

Software is intuitive for anyone familiar with Windows operating systems and the tabbed property sheet concept. The primary sheet is the most used area, called MAIN. There are two selection windows with a folder icon beside them. Clicking on the folder opens up a selection dialog box, from which the desired wave file is selected. The same file may be loaded into both sides for that type of cassette. Should blank be required, use a commonly available sound editing program such as Audacity, Sound forge, or Audition to create a file of silence with the proper length to match the program side. If lengths do not match, silence will be added by the program to equalize the lengths.

Once the files are selected, clicking on the Load files button begins the process of loading the selected files into RAM, reversing side 2, and inserting the cue tone. The only indicator of activity is a text message near the bottom “Audio files loading...” When they are done, there will be an acknowledgment window, which will clear by pressing OK.

It is now ready to record, and pressing the Record button starts the process until the stop button is pressed. A loop counter indicates how many times the program has repeated.

Levels

The software can adjust output levels +/- 3db. This is to allow fine-tuning of levels, and rarely should be used. The levels should be set at 0db, and the potentiometers on the card adjusted for the desired level. Included on the software disc is a reference level file, which will set the output.

Slave interface

The logic is positive going relative to ground. The pinouts are as follows:

Do not expect to draw more than about 20ma from each output. For recommendations, please contact the factory.

Analog Outputs

The analog outputs do not follow a logical sequence. (The calibration pots are sequential) They were positioned this way due to board density. They are as follows: