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The 126dB is C-weighted SPL, a difference of about 25dB at 63Hz and 16dB at 125Hz from A-weighting, thus the 13dB to 18dB lower A-weighted levels. That may be an accurate application in some cases but some may not like that their performance being considered noise. Of course the irony in even trying to relate OSHA and NIOSH to concerts is that they address noise, which is unwanted or undesired sound.

And the related information is often misunderstood and misapplied in trying to do so. The point is that while perhaps better than nothing, it is really difficult to directly apply OSHA or NIOSH to concerts or other events except in relation to the exposure of employees over an 8 hour time period. If I recall correctly that relates to a 85dBA 8 hour dose.

For employees it is quite common to have source levels well over those allowed and to employ active and/or administrative measures to reduce their exposure, that is a bit more challenging to apply to an audience of non-employees that can come and go as they want and can use noise reduction measures or not as they please.Īlso often overlooked is that OSHA actually has a lower SPL level criteria that does not require active measures but that does entail having to establish a hearing monitoring program. That could mean reducing the source levels but it can also involve active measures such as hearing protection or administrative measures such as limiting the time one is exposed. OSHA and NIOSH also do not actually limit the source noise levels, only the resulting exposure. Thus that chart is not saying that a 105dBA TWA for 1 hour is acceptable but rather that it is allowable only if you also meet a 102dBA TWA for 1-1/2 hours, a 100dBA for 2 hours, 97dBA for a 3 hour period, 95dBA for 4 hours, 92dBA for 6 hours and a 90dBA TWA for an 8 hour period, all of which relate to the 90dBA, 8 hour noise exposure 'dose' that is allowed. In other words to be compliant you have to meet not only the criteria for any directly relevant shorter time period but also all of the guidelines for any longer periods as well.

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NIOSH and OSHA don't address anything other the exposure over an 8 hour period and the charts presented are actually expressing how to relate shorter exposures during that 8 hour period to the allowable 8 hour 'dose'. repeated exposure by employees over multiple 8 hour periods. We are not Responsible for any taxes, Duties, or Customs / Brokerage fees applied by the destination country We are always working hard to ensure your package arrives as soon as possible.Click to expand.There are many misunderstandings regarding the noise component of OSHA and NIOSH and much of that seems to stem from the fact that OSHA and NIOSH both address long term noise exposure in the work place, i.e. This Does not include AK ,HI, PR, and Virgin Islands & But we have Great Shipping Rates to Those States/ Territory's Great International Shipping Rates Also Available. SPL/1m (calc) 141 dB Passive Power Handling 4800 W peak Peak SPL 10m 132 dB Recommended High-Pass Frequency 33 Hz Sensitivity 1 W/1 m 104 dB Shipping Info Shipping & Handling is $FREE.00 in the 48 Lower States. Please take a look at photos before purchasing Available Color Black Chassis Size 457.2 mm Coverage (Nominal -6 dB) H 360 ° Coverage (Nominal -6 dB) V 8 ° Depth 740.4 mm Enclosure Material Birch plywood, textured epoxy paint Environmental Specs IEC 529 IP24, MIL STD 810 Frequency Response (-10 dB) 35 - 500 Hz Frequency Response (-3 dB) 40 - 400 Hz Grill Powder-coated steel Height 494.3 mm Input Connections 2 Neutrik® NL8 LF Nominal Impedance 4 Ω LF Power Handling 1200 W continuous, 4800 W peak Watts LF Transducer 2 x 18-in EVX-180B Max.

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For Sale is - One - EV Electro Voice X-Line XSUB Dual 18' High Output Line Array Subwoofer HIGH-OUTPUT LINE-ARRAY SUBWOOFER SYSTEM RECTANGULAR CABINET WITH FOOTPRINT IDENTICAL TO OTHER X-LINE SYSTEMS PROPRIETARY RIGGING ALLOWS FOR RAPID VENUE LOAD-IN AND LOAD-OUT Condition description - Great Sounding Subwoofer - In Great conditon and good working order - Each sale is for ONE cabinet shown in the Photo but we have a total of for sale - If ONE cabinet is purchased you will receive just the cabinet - If two or more are purchased you will receive the rigging Hardware for those cabinets - If Four Cabinets are purchased you will receive rigging hardware and a Free Dollie -This unit has scratches and minor dents. Item: 172789276262 EV Electro Voice X-Line XSUB Dual 18' High Output Line Array Subwoofer * ONE *.

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