ck 61
Polar pattern cardioid
Frequency range 20 to 20.000 Hz
Sensitivity 40/20/6,3 mV/Pa (-28/-34/-44 dBV)
Max. SPL 134/140/144 dB (for 0,5% THD)
Equivalent noise level (CCIR 468-3) 23/21/28 dB
Equivalent noise level 13/11/17 dB-A
Signal/noise ratio (A-weighted) 81/83/77 dB
Preattenuation pad +6/0/-10 dB, selectable
Supply voltage through C 480B
Current consumption through C 480B
Finish matte black
Dimensions 21 Ø x
23/77 mm / 0.8 dia x 0.9/1.1 in.
Net weight 25 g / 0.9 oz.
Shipping weight 150 g / 5.3 oz.
ck 63
Polar pattern hypercardioid
Frequency range 20 to 20,000 Hz
Sensitivity 40/20/6.3 mV/Pa (-28/-34/-44 dBV)
Max. SPL 134/140/144 dB (for 0,5% THD)
Equivalent noise level (CCIR 468-3) 13/11/17 dB-A
Equivalent noise level 13/11/17 dB-A
Signal/noise ratio (A-weighted) 81/83/77 dB
Preattenuation pad +6/0/-10 dB, selectable
Supply voltage through C 480 B
Current consumption through C 480 B
Finish matte black
Dimensions 21 dia. x
23/27 mm / 0.8 dia. x 0.9/1.1 in.
Net weight 25 g / 0.9 oz.
Shipping weight 150 g / 5.3 oz.
the above must be a typo, since they're the same when you look at the third page of this document:
http://www.akg.com/mediadatabase/psfile/datei/50/ULS_Series4055c282bda80.pdfeven the above specs and the .pdf don't agree. the two length's must be with and without threads being measured.