tuxedocivic Posted June 4, 2015 Report Share Posted June 4, 2015 A spam mail from AudioXpress alerted me to a new microphone from PCB that is apparently good down to 1/4hz. Imagine a frequency that takes 4 seconds to reproduce! Here's the website: http://www.pcb.com/Products.aspx?m=378A07 I added it to my cart to see the price but it says not available online. It's apparently a new product. If this were under $300 I'd be tempted to convince myself I need one. But I'm guessing it's over a grand easy. Certainly targeted for the commercial industry. AudioXpress actually has more info than PCB's website: http://audioxpress.com/article/New-1-2-Low-Frequency-Microphone-for-Infrasound-Measurements-from-PCB-Piezotronics.html "Low frequency measurements are commonly required for wind turbines, sonic booms, diesel engines and specialized loudspeaker systems to name a few." Is there anything out there that can rival this thing? Perhaps some of you hardcore ULF guys would want one of these. Personally it's not my passion like some of you. I'd rather spend my money on a mic that measures my speaker designs more than this. Very interesting none-the-less. Link to comment Share on other sites More sharing options...
BeastAudio Posted June 4, 2015 Report Share Posted June 4, 2015 I bet Rush2049 over at AVS has some experience with a mic like that or similar. He works @ hydro plants that typically have resonances in the low single hz area. Link to comment Share on other sites More sharing options...
tuxedocivic Posted June 4, 2015 Author Report Share Posted June 4, 2015 Huh, don't know that guy. I'd like to know how much it costs. Link to comment Share on other sites More sharing options...
3ll3d00d Posted June 4, 2015 Report Share Posted June 4, 2015 Huh, don't know that guy. I'd like to know how much it costs. it says $1400 (US Domestic only) when I visit the page Link to comment Share on other sites More sharing options...
tuxedocivic Posted June 4, 2015 Author Report Share Posted June 4, 2015 Really, says add to cart for a quote. Then it says not available online when I try to view my cart. Oh well. $1400 is about what I would have figured. Gotta be serious about this stuff to shell out that kind of dough. Probably the best tool on the market for ULF, at least that I'm aware of. Link to comment Share on other sites More sharing options...
mojave Posted June 24, 2015 Report Share Posted June 24, 2015 Constant current microphones like the PCB 378A07 are DC coupled and therefore flat down to very low frequencies. I use a similar microphone - the iSEMcon 7107-CHTB. It was custom calibrated by iSEMcon for me to 5 Hz and is down .25 dB at 5 Hz. The manufacture told me I shouldn't have any rolloff. It cost me $289 vs $1400. Link to comment Share on other sites More sharing options...
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