chhanthony
發表於 2009-4-1 09:52
36592
not a big difference.
Some c hing said surround db should be more than 75db, so at the testing, i used 80db
however i found it more comfortable for the surround speakers set at 78db.
lemonstar 發表於 2009-3-31 22:58 http://www.post76.com/discuss/images/common/back.gif
好明顯當支咪向前牆, 噪音表對前中置會敏感O的. 所以計出surround聲道嘅計壓係比向天花細
不過我見O的雜誌O的相都係斜斜地向前, 唔知有無大佬可以confirm 下呢?
avmilk
發表於 2009-4-1 09:54
anthony, thanks again for the disc!
chhanthony
發表於 2009-4-1 10:01
+-係咪就係10db, 可refer相片{:6_190:}
lemonstar 發表於 2009-3-31 22:43 http://www.post76.com/discuss/images/common/back.gif
lemonstar兄
唔好意思, 我係想問呢隻sound meter有無講唔差幾多?
chhanthony
發表於 2009-4-1 10:03
anthony, thanks again for the disc!
avmilk 發表於 2009-4-1 09:54 http://www.post76.com/discuss/images/common/back.gif
唔好客氣, 讀唔讀到?
avmilk
發表於 2009-4-1 10:09
唔好客氣, 讀唔讀到?
chhanthony 發表於 2009-4-1 10:03 http://www.post76.com/discuss/images/common/back.gif
back home v late on yesterday, will test tonite!
kelvincps2005
發表於 2009-4-1 10:12
31# chhanthony
有書寫４０degree facing each channel.
chhanthony
發表於 2009-4-1 10:13
back home v late on yesterday, will test tonite!
avmilk 發表於 2009-4-1 10:09 http://www.post76.com/discuss/images/common/back.gif
又去浦..{:1_262:}
alzard
發表於 2009-4-1 10:21
Extract from SVS subwoofer manual:
"Place the SPL meter on a tripod and set the controls to C-weighted, Slow, and the 70 dB scale (you may need to alter the dB scale during the meas-urement process). Place the meter at head level at the primary listening position with the meter pointed toward the front stage and pointed toward the ceiling at a 45 degree angle."
You may find it useful as a starting point :)
http://www.svsound.com/manuals/SVS_v2008.3_SB12-Plus.pdf
chhanthony
發表於 2009-4-1 10:22
Extract from SVS subwoofer manual:
"Place the SPL meter on a tripod and set the controls to C-weighted, Slow, and the 70 dB scale (you may need to alter the dB scale during the meas-urement process). ...
alzard 發表於 2009-4-1 10:21 http://www.post76.com/discuss/images/common/back.gif
我一路都係用45 degree angle.... hehehehehe
alzard
發表於 2009-4-1 13:44
重有既係呢個meter低頻sensitivity唔高﹐假如你想set 75db﹐你見個meter去到73db就
OK (又係SVS Customer Service教)。AMP有Dynamic EQ的話LFE level唔駛set得太高﹐因為DEQ會boost好多LFE level (+4-5db等閑事)。
