RadioShack Sound Meter開箱

chhanthony

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

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

anthony, thanks again for the disc!

chhanthony

+-係咪就係10db, 可refer相片
lemonstar 發表於 2009-3-31 22:43

lemonstar兄

唔好意思, 我係想問呢隻sound meter有無講唔差幾多?

chhanthony

anthony, thanks again for the disc!
avmilk 發表於 2009-4-1 09:54

唔好客氣, 讀唔讀到?

avmilk

唔好客氣, 讀唔讀到?
chhanthony 發表於 2009-4-1 10:03

back home v late on yesterday, will test tonite!

kelvincps2005

31# chhanthony

有書寫４０degree facing each channel.

chhanthony

back home v late on yesterday, will test tonite!
avmilk 發表於 2009-4-1 10:09

又去浦..

alzard

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

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

我一路都係用45 degree angle.... hehehehehe

alzard

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)。