P COVOX

USD $16.99

P-COVOX is a 4-channel, discrete component digital-to-analog converter (DAC) that fits under the PIA chip.

3 in stock (can be backordered)

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SKU: PCOVOX1 Categories: ,

Description

P-COVOX is a 4-channel, discrete component digital-to-analog converter (DAC) that fits under the PIA chip. It isn’t as Hi-Fi as modern sound cards, but its performance may be a lot better than a POKEY – especially playing MODs or NEO files.

Main features :

  • Easy fitting – one wire in most cases
  • high quality PCB
  • transparent for Atari OS / Hardware / Ultimate / etc.
  • Equal audio output level on both channels
  • Optional pull-up resistors on DATA LINES / not fitted by default/
  • ROHS, PB Free

 INSIDE BOX :

  • A fully tested and assembled P-COVOX

INSTALLATION STEP BY STEP:

Disclaimer: If you are not familiar with soldering or you do not have proper tools, please LET a pro technician do it for you or send me your ATARI BOARD for installation. Upgrade installation cost is 10€ only. Contact me to arrange installation. Otherwise, please remember – wrong tools usage or low skills may damage the Atari and ultimate; any damage/harm to your hardware is NOT subject to any kind of warranty.

If Your PIA chip is NOT socketed:

  • desolder PIA CHIP
  • solder precise socket into its place (supplied)
  • insert P-COVOX
  • Insert PIA chip to P-COVOX

If Your PIA chip is socketed:

  • remove PIA CHIP
  • insert P-COVOX
  • Insert PIA CHIP to P-COVOX

Connections to be made with small wire:

  • CTRL – select one pin only  to set P-COVPX’s  address page:
  • if you solder CTRL signal to pin 9 of LS138 on Atari board, P-COVOX will be present at $D600
  • if you solder CTRL signal to pin 10 of LS138 on Atari board, P-COVOX will be present at $D600
  • if you solder CTRL signal to pin 7 of LS138 on Atari board, P-COVOX will be present at $D700

 

U2-74LS138

O2 signal problems:

  • On the majority of  Atari’s middle and RIGHT  pins of the JP1 connector shall be jumpered/connected. No further actions are required.
  • If Your sound is distorted, remove the jumper; then  connect the RIGHT pin of JP1 to CPU pin 39

DISCLAIMER:

Connecting P_COVOX audio with stereo out is not a good idea. P-COVOX loudness may be reduced. Thus, LM358 amplifier replacement – U-MIXER is being made to mix 2 pokeys, 2 P-COVOX audio to stereo out, mono out, and modulator audio

Additional information

Weight 1 oz
Dimensions 2 × 1 × 1 in

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