Files: Lost Crypt BBS

Uploaded Sun Dec 28 2025 11:51 am

Plans for a analog I/O extension board
for the PC using the 8bit AD7569 IC.

ASM1LFO.GIF (16K)

Uploaded Tue Dec 30 2025 06:45 pm

Low frequncy osc. schematic.

ASM1NS.GIF (25K)

Uploaded Tue Dec 30 2025 06:45 pm

Asm-1 noise source schematic.

AUDMIX01.ZIP (2K)

Uploaded Sun Dec 28 2025 11:51 am

Plans for a single channel audio mixer
using transistors

booc2pe.gif (23K)

Uploaded Tue Dec 30 2025 06:45 pm

Boss Octave OC-2 schematic.

bosssg1.gif (14K)

Uploaded Tue Dec 30 2025 06:45 pm

Boss slow gear SG-1 attack delay schematic.

HEADAMP1.ZIP (35K)

Uploaded Sun Dec 28 2025 11:51 am

Plans for a Hi Fi headphone Amp.

MIDIBOX1.ZIP (69K)

Uploaded Sun Dec 28 2025 11:51 am

Plans on a few MIDI connector boxes
for the Sound Blaster card.
 How to build a MIDI interface box and
a threw-put box.

NOGENwp.GIF (59K)

Uploaded Tue Dec 30 2025 06:45 pm

White and Pink noise generator schematic.

NOISE2.GIF (10K)

Uploaded Tue Dec 30 2025 06:45 pm

VCO clocked pseudo random noise generator schematic.

NOISEwhi.GIF (19K)

Uploaded Tue Dec 30 2025 06:45 pm

Scalable white noise generator schematic.

PERCUS1.GIF (13K)

Uploaded Tue Dec 30 2025 06:45 pm

Percussion circuit.

PRFECT45.ZIP (194K)

Uploaded Sun Dec 28 2025 11:51 am

Loude speaker Simulation program.
Tests loudspeaker desigh.

shotmike.pdf (527K)

Uploaded Tue Dec 30 2025 06:45 pm

Build the shotgun sound snooper.

shotmike.rar (446K)

Uploaded Tue Dec 30 2025 06:45 pm

Build a shotgum mic. project.

SOUNDLEV.ZIP (177K)

Uploaded Sun Dec 28 2025 11:51 am

Sound level meter (project) in AcroReader format