Test Equipment Anonymous

This was a response to a discussion in the Discord; I realized after I posted it that it is in fact a valuable collection of resources for anyone wanting to tune up a cassette deck after doing repairs and realizing they needed to adjust/verify transport speed, wow/flutter, azimuth, etc so I'm reposting here for posterity:

I recently did a bit of a deep dive into this aspect of cassette deck service; the TapeHeads community have been at this for quite a while. Alan Freed has developed a bit of software that allows anyone to do this easily in their home lab; the video above is a good primer on what and how.

For playback speed and W/F you will need a Sony WS-48B 3KHz tone or equivalent test tape from a reputable supplier; these range in price from ~$20 to over $100 depending on hype and equipment used. Typical tapes found on eBay, etc will be made from a digital source and recorded on a normal bias tape using a supposedly calibrated Nak Dragon or similar deck; this is more than sufficient for most consumer playback adjustment.

Alex Nitikin is widely well-regarded in the community as very knowledgeable; he makes studio-standard calibration tapes using a full-track Revox cassette deck as most of these tapes are supposed to be made. Here is his site; it contains the WFGUI software DL and several other useful links:

http://www.ant-audio.co.uk/index.php?ca ... ry=library

http://www.ant-audio.co.uk/index.php?ca ... ment_tapes

His tapes are a bit more expensive, as you might guess; according to this thread at Tapeheads.net, as of October 2024 his azimuth tape is ~50 quid, while his combination tape is ~80 quid:

https://www.tapeheads.net/threads/a-n-t ... ss.109204/

This article covers the once commonly-available "standard" test/cal tapes and what they were/did:

https://www.petervis.com/Vintage%20Misc ... sette.html

Cheers!

These are excellent sources and resources.

Still, tape is only interesting as a historical medium, and all possible effort should be directed towards transferring their content to ones and zeros and storing those on hard drives.

mansaxel wrote: ↑Sun Mar 09, 2025 6:40 pm These are excellent sources and resources.

Still, tape is only interesting as a historical medium, and all possible effort should be directed towards transferring their content to ones and zeros and storing those on hard drives.

I refer you to the honorable gentleman:

Classic.

mansaxel wrote: ↑Sun Mar 09, 2025 6:40 pm These are excellent sources and resources.

Still, tape is only interesting as a historical medium, and all possible effort should be directed towards transferring their content to ones and zeros and storing those on hard drives.

I find the "very mechanical" nature of these devices... and all the heart and soul poured into the engineering on some examples... makes them very rewarding to tinker on. That in and of itself is of considerable value. Some of them qualify as "historically important" machines, no less deserving of restoration than vintage automobiles.

The fact that some of them can also create the very media they play in "best example" quality gives them a pass on the "it's obsolete media, who GAF" rubrik, IMO; like all machines, they need to be used or they die from neglect.

mnem
*shameless ol' dinosaur*