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The following files and folders have been uploaded to the Files area of the [email protected] group. * /Andrzej Sochon wind shields for EM172 and EM173 capsules made of mesh Christmas

Impedance matching with non-linear transducers such as piezo elements does actually matter.? A piezo changes behavior if it has to source current. -Scott

Probably any of the Alice variants are good for this application. Generally the 2.2k resistors connecting to the FET would be a bit higher value with built-in FETs. -Scott -- ---- Scott Helmke ----

The Simple P48 can run a decent distance. I k one of a 200ft run Best Regards, Jules Ryckebusch

75-120ft (25-35 meters) concert hall and recording studio distances.

How long are the runs in question?

Hi everyone. I need to build a mic with a PUI 5024 capsule that can be phantom powered AND be happy driving long cable runs. I think that rules out the Simple P48 circuit. I am aware of Scott

This article is interesting: The facts are correct, but the analysis is flawed. The lack of technicity of the author leads him to dubious conclusions.

https://spacewalkaudio.co.uk/impedance-transformer-for-contact-mics-testing-the-hosa-mit-129-with-a-jrf-c-series-pro/ Am Mi., 8. Mai 2024 um 07:11 Uhr schrieb pmfalcman via groups.io

As I said - I used the DI box just out of curiosity. I had one laying around.

"impedance matching" has nothing to do with audio signalling where only voltage needs to be preserved, and power can be

Passive DI's are inadequate for piezo transducers; They want to see a very high load impedance, typically > 1Megohm. Passive DI's are about 50 kohms.

I checked registered mail rates to UK. Since this could be sent as a letter (20 mm thickness max) the cost is relatively reasonable - ~ ?5. I'll be ordering more soon, can as well cover your needs

I will go Jules' piezo preamp route. Out of curiosity I tried thomman's Millenium DI-e passive DI box as they're supposed to match impedances. But it doesn't seem to do much except effectively only

I've got good results with Hosa MIT-129. Small passive transformer impendance converter that works good with piezos. I combine them with a thomann inline FETAmp, that blocks the P48 to

Sommer Cable Cicada SO-D14 and connectors from REAN. Am Di., 7. Mai 2024 um 02:18 Uhr schrieb silly via groups.io <silly= [email protected]>:

Any other recommended cable/connector besides Mogami 2697 and Neutrik NYS231BG, will see if a local store has them.

As per usual no shipping to the UK...

Added also a buffered recording of the same oil drum. Sounds much better, fuller. Simple makeshift buffer based on Don Tillman's design, I cobbled together couple years ago.

It only says "transceiver" somewhere. It's a piezo after all. Yes, description suggests that 40 kHz is the resonance frequency. Oil drum banging & tapping raw recordings. A plastic traffic cone (end