posted
Hi, Is there a certain type of mic needed to measure low frequencys? I have access to many oscopes but I need a mic to set up my truck. If there is one needed, could someone recommend a type and a price. I'm going to need to buy one soon.
Thanks
-------------------- Thanks
Matt
mattzamora-gmail.com Posts: 202 | From: san diego, ca. | Registered: Aug 2002
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posted
I'm no expert, but I didn't know you used a mic with an oscilloscope. I use an old 40MHz leader oscope, and I don't use any mic. Just use the probe, and touch it to whatever you need to measure. After all, you're measuring voltage, not SPL, right? And i think it would be best to use a scope that isn't a high frequency one. Like i said, i'm using a 40MHz model, and i have to set it close to the lowest setting to see anything useful.
Someone correct me if i'm wrong...
-------------------- 1995 Grand Am GT Nakamichi CD-45z Pair of Audiocontrol EQT's Audiocontrol 4XS Crossfire TEK100.2 Illusion Audio ND-6 Crossfire VR142 Image Dynamics CD1E V.2
Looking for the following: Image Dynamics IDMAX 12" Crossfire BMF1000d or VR1000d Posts: 48 | From: Buffalo | Registered: Oct 2002
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posted
You can use a mic with a scope, it could be useful in certain cases. However for setting gains you want to use a probe, and for tuning or metering a sub system you want to have an rta or db meter with a calibrated mic. Depends on what you are trying to do. Anyway most analog scopes don't do well with low frequencies not due to the probe, but just how they work. Since they scan across the CRT, when you take 1/10th of a second to scan the screen it won't show the entire screen becuase the phosphor on the screen goes dark before the entire screen is drawn. A good digital storage oscilloscope will allow you to do low frequencies with ease, but cost much more.
Posts: 2575 | From: GA | Registered: May 1999
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