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Gear / Technical Help => Microphones & Setup => Topic started by: Massive Dynamic on September 24, 2011, 01:18:10 PM
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Information in this FS thread (http://taperssection.com/index.php?topic=148686.0;all) got me wondering about the best way to power my B3s. I can either run them directly into my M10 which has 3V PIP, or I can plug them into my Naiant lb which has 9V power, first, and then into the M10. My B3s are wired to a single 1/8" plug without any of the resistors mentioned in the thread. Will the higher voltage result in higher SPL-handling? Is distortion caused by overloading easy to identify, or is it just a general "blech" sound?
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i am no expert in this field, illconditioned or gutbucket im sure can give you all sorts of technical data concerning this question....however i also have a set of b3's terminated to 1/8" and no resistors....ive ran these straight into the m10 for some rather loud pa material and thought the results were just fine....ive also ran b3>ca9100>m10 and again thought the results were just fine...i was not able to detect any distortion running them either way....i think unless you are really close to a very loud source, running straight into the m10 would be fine but dont hold me to it....i think the general consensus is that for very loud material a 9v supply is ideal, but again i have not had any probs YET running b3>m10....ymmv.
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even with just 3v pip the pcm-m10 can handle hungry mics very good. so you went lucky.
but recording very loud gigs, maybe from stack a preamp would be more secure.
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Thanks for the feedback. I have an important show coming up, but I won't have a chance to do any comparison recordings at a real show beforehand. Maybe I'll take a chance and leave the lb at home; would certainly be easier to manage.
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I did tape with just the B3s and the M10. Sounds ok, but...the waveform looks funny in Audacity. Anyone know what might be going on? Thx.
EDIT: Server won't let me attach an 88k image; here is a linked image.
(http://farm7.static.flickr.com/6155/6212002682_6e9c773b7d_b.jpg) (http://www.flickr.com/photos/42993036@N05/6212002682/)
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Yes, plug in power, Littlebox, and even the Naiant PFA are all excellent ways to power the B3s.
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Richard noticed the same thing in the thread you mentioned in the original post. He wrote "I noticed the waveforms were not symmetric when viewed in Wavelab". This happens when there isn't any resistor connected to the source of the FET in the capsule. Looks like you noticed it too. Your original post also mentions the lack of these source resistors in your mini plug.
-MIQ
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(http://farm7.static.flickr.com/6155/6212002682_6e9c773b7d_b.jpg) (http://www.flickr.com/photos/42993036@N05/6212002682/)
OT post.. I don't use wavelab and have a question about the image above. What is the light blue shaded region in the waveform, the RMS response?
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It looks like an underpowered wav form. I've seen posts like this before with an asymetrical form.
Usually th to of the wav having less reaching peaks just like yours.
Just a guess but, that's what it looks like to me.
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You need a source resistor - between black wire and ground, one for each channel.
I use a 2.2k sometimes, for moderately loud stuff. This works with both plug-in-power and a battery box. For absolute certainly, use a 4.7k resistor, but in that case, you'll probably want a 9v battery box (or preamp) instead of plug-in-power.
Richard
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You need a source resistor - between black wire and ground, one for each channel.
I use a 2.2k sometimes, for moderately loud stuff. This works with both plug-in-power and a battery box. For absolute certainly, use a 4.7k resistor, but in that case, you'll probably want a 9v battery box (or preamp) instead of plug-in-power.
Richard
Thanks for the extra info, Richard, though now I am in a quandary. I bought the B3s specifically to run straight into the M10 for ease of use. If I need the 4.7k resistor to record loud shows, though, I can't really do that :(.
Maybe I'll just run the lb with the B3s at all times after I get the B3s modded. I'm definitely planning to record some really loud shows in the future. There isn't really any benefit to powering the B3s with 9v without the resistors, is there?
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You need a source resistor - between black wire and ground, one for each channel.
I use a 2.2k sometimes, for moderately loud stuff. This works with both plug-in-power and a battery box. For absolute certainly, use a 4.7k resistor, but in that case, you'll probably want a 9v battery box (or preamp) instead of plug-in-power.
Richard
Thanks for the extra info, Richard, though now I am in a quandary. I bought the B3s specifically to run straight into the M10 for ease of use. If I need the 4.7k resistor to record loud shows, though, I can't really do that :( .
Maybe I'll just run the lb with the B3s at all times after I get the B3s modded. I'm definitely planning to record some really loud shows in the future. There isn't really any benefit to powering the B3s with 9v without the resistors, is there?
OK, you should have 4.7k in there at all times. For quiet shows (or ambient stuff) use Plug-in-power. For loud shows use a regular (2-wire) battery box.
Richard