At 1:21 AM -0500 4/25/05, Rob Danielson wrote:
>At 1:29 PM -0700 4/24/05, Charles Bragg wrote:
>> I do have noise somewhere but can't be sure if it's mic
>>noise, preamp noise, and/or playback amp noise. I use a pair of
>>SoundPro cardioids built with Audio Technica AT853's, and a Sharp
>>MD-DR7. Most of the time there is enough background noise outdoors
>>to hide any system hiss. Recently I made an indoor tape and when the
>>environment was quiet I heard a *lot* of hiss. I play back the files
>>into my computer sound card - which seems to record other sources
>>without adding hiss.
>> The self-noise specs are impossible to find, even on the AT site.
>
>
>sensitivty is 6.3 mV re 1 V at 1 Pa
> self noise is 27dBA
>
>FEATURES:
>* Element-Condensor
>* Polar Pattern-Cardoid
>* Phantom Power Requirements- 9 - 52V, 2 mA typical
>* Frequency Response- 30 - 20,000 Hz
>* Switch- Flat; roll-off
>* Open Circuit Sensitivity- PHANTOM: -44 dB (6.3 mV) re 1V at 1 Pa
>BATTERY: -45 dB (5.6 mV) re 1V at 1 Pa
>* Low Frequency Roll-off- 80 Hz, 12 dB per octave
>* Impedance- PHANTOM: 200 ohms, BATTERY: 270 ohms
>* Weight-.4 oz (410 g)
>* Maximum Input Sound Level- PHANTOM: 135 dB SPL, 1 kHz at 1% T.H.D.
>BATTERY: 121 dB SPL, 1 kHz at 1% T.H.D
>* Output Connector- XLRM-type
> * Signal to Noise Ratio-67 dB, 1 kHz at 1 Pa
>* Battery Type- 1.5V AA/UM3
>* Battery Current/Life- 0.4 mA/2000 hours typical
>* Switch- Off/on-flat/on-roll-off
>* Power Module- In-line
>* Dynamic Range (Typical)- PHANTOM: 108 dB, 1 kHz at Max. SPL
>BATTERY: 94 dB, 1 kHz at Max. SPL
These specs are obviously for the whole packeage including power
supply. The raw PIP-powered mic may be quieter and have a higher
output; that's the case with Shure's MX-183 compared to the WL-183.
-Dan Dugan
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