clintrubber
Well-known member
Hi,
The short question:
How likely would it be that one needs to handle more than 145 dB SPL ?
I don't need to record gunshots & rocket-launches, but does for instance a snare on a bad day go beyond this figure ?
Are people often using mic-pads up to 20dB ? (will depend on situation & mic-specs, but...)
Was wondering what most of the pads on LDCs & SDCs are actually addressing,
the overload of their own internal buffer or the subsequent mic-preamp.
It'll of course depend on the specific mic & situation, but who knows there are some common
things among the various mics.
Of the condenser-mic schematics I saw so far, the most common thing is to add a capacitor
'to the capsule' to form a cap-divider & prevent overload of the own buffer.
This is for '-10dB pads'. Mics that go further for a -20dB setting leave it at that & attenuate
further down the internal electronics, so that's more targeted at preventing overload of
the mic-preamp at the other end of the cable. The AKG C451B is an example of this.
But this could easily be added as a pad between mic & preamp as well (XLR-barrel).
So how likely would it be that one needs to handle more than 145 dB SPL ?
I don't need to record gunshots & rocket-launches, but does for instance a snare on a bad day go beyond this figure ?
People using pads up to 20dB (again, it'll depend on situation & mic-specs, but...)
The background to my question is actually this: I have a SDC that can handle
up to 145dB-SPL with the 10dB-pad engaged. Might buy another of the type, but there's also
a model that goes to 155 dB (20dB pad).
Thanks,
Peter
The short question:
How likely would it be that one needs to handle more than 145 dB SPL ?
I don't need to record gunshots & rocket-launches, but does for instance a snare on a bad day go beyond this figure ?
Are people often using mic-pads up to 20dB ? (will depend on situation & mic-specs, but...)
Was wondering what most of the pads on LDCs & SDCs are actually addressing,
the overload of their own internal buffer or the subsequent mic-preamp.
It'll of course depend on the specific mic & situation, but who knows there are some common
things among the various mics.
Of the condenser-mic schematics I saw so far, the most common thing is to add a capacitor
'to the capsule' to form a cap-divider & prevent overload of the own buffer.
This is for '-10dB pads'. Mics that go further for a -20dB setting leave it at that & attenuate
further down the internal electronics, so that's more targeted at preventing overload of
the mic-preamp at the other end of the cable. The AKG C451B is an example of this.
But this could easily be added as a pad between mic & preamp as well (XLR-barrel).
So how likely would it be that one needs to handle more than 145 dB SPL ?
I don't need to record gunshots & rocket-launches, but does for instance a snare on a bad day go beyond this figure ?
People using pads up to 20dB (again, it'll depend on situation & mic-specs, but...)
The background to my question is actually this: I have a SDC that can handle
up to 145dB-SPL with the 10dB-pad engaged. Might buy another of the type, but there's also
a model that goes to 155 dB (20dB pad).
Thanks,
Peter