subwoofer experts please... (1 Viewer)

[Jon Slater]

Link Removed
Any thoughts on this chart ? Measurements taken with my paradigm pdr-10 subwoofer only..no other speakers connected..
info on testing etc found at Link Removed
also..am i right in thinking that when using the radio shack spl meter the subwoofer level is not correctly reported ? For example if i set all speakers to 75bd my subwoofer seems too loud..I have heard that the spl meter under reports the levels..so a reading of 75db maybe as much as 80 db..?
other posts on this subject at [url=http://www.avforums.com/frame.html?

 

[Jimmy P]

Yes the Radio shack sound meter is supposedly deficient in the lower Hz range,starting at 125Hz you add a correction factor to your readings to get actual values.

125Hz +0.5

100Hz +2.0

80Hz +1.5

63Hz +1.5

40Hz +2.5

31.5Hz +3.0

25Hz +5.0

20Hz +7.5

16Hz +11.5

12.5Hz +16.5

10Hz +20.5

Is your chart plotted with corrected values?,No matter how its plotted,you have a huge peak at 40Hz and a hole at 63Hz,you should try moving the sub to different locations to get a better response curve if your situation allows,if not you are a candidate for a BFD.Some say when useing reference noise(like receiver pink noise)if you set your speakers at 75dB, setting the sub level at 72dB is supposed to compensate for the Radio Shack meter

 

[Jeffrey Noel]

Time for a Behringer Feedback Destroyer. That would help TREMENDOUSLY!!!

 

[Jon Slater]

Thanks for the replys guys..i will see if i can get a bfd in the UK..

Yes the chart is plotted using corrected values, i shall try moving the sub today and will let you know how i get on..

cheers