I've seen innumerable references to this capsule for use in measurement mics and general DIY audio use over the years (see my post earlier today in "Sound Quality Vs Measurements" of a recording made with it), and I recall it being a replacement for an earlier Panasonic model that was discontinued and was also popular, and the one that got the original "Linkwitz Mod." Here's the Linkwitz page, the older one was WM-60AY:
System Test
I just got this from Digikey, and looking on their site ALL the Panasonic mic elements are being marked as "Limited quantity available, not recommended for new design" as is the WM61A, or "Obsolete Item."
Obsolete Parts Notification
You have purchased the following part number(s) from Digi-Key within the last two years. [I forget the exact date, I only got two, and STILL Haven't done anything with them] The manufacturer has announced this part(s) will become obsolete. Please click on the link below for more information on possible substitutes.
Manufacturer Details
PANASONIC ELECTRONIC COMPONENTS Description: MIC COND ANALOG OMNI -35DB
Manufacturer Part Number: WM-61A
Digi-Key Part Number: P9925-ND
For substitutes, please click here
Obsolete Part
The replacement part is by PUI Audio and in the same price range:
POM-3535L-3-R PUI Audio, Inc. | 668-1391-ND | DigiKey
I've ordered two of the replacement type to try them out.
Oh, and I've ordered 100 WM-61A's. That's more than enough for me to play with, and maybe they'll end up going for big bucks on ebay and can go toward my retirement. Digi-Key Stock shows 12,514. It could be interesting to see how fast that goes down.
System Test
I just got this from Digikey, and looking on their site ALL the Panasonic mic elements are being marked as "Limited quantity available, not recommended for new design" as is the WM61A, or "Obsolete Item."
Obsolete Parts Notification
You have purchased the following part number(s) from Digi-Key within the last two years. [I forget the exact date, I only got two, and STILL Haven't done anything with them] The manufacturer has announced this part(s) will become obsolete. Please click on the link below for more information on possible substitutes.
Manufacturer Details
PANASONIC ELECTRONIC COMPONENTS Description: MIC COND ANALOG OMNI -35DB
Manufacturer Part Number: WM-61A
Digi-Key Part Number: P9925-ND
For substitutes, please click here
Obsolete Part
The replacement part is by PUI Audio and in the same price range:
POM-3535L-3-R PUI Audio, Inc. | 668-1391-ND | DigiKey
I've ordered two of the replacement type to try them out.
Oh, and I've ordered 100 WM-61A's. That's more than enough for me to play with, and maybe they'll end up going for big bucks on ebay and can go toward my retirement. Digi-Key Stock shows 12,514. It could be interesting to see how fast that goes down.