論壇 › 家庭影院 › 睇戲你開幾大聲...calling jessica

hactl 發表於 2009-10-10 23:23

一般開65-70----150尺廳

aw11onfire 發表於 2009-10-10 23:46

Accroding to Dolby, LFE max recorded level is 115db. If sound output level was measured at 125db , the amp volume should be +10db?? May be it is a peak output level or I'm wrong.
ryanenen 發表於 2009-10-10 23:14 http://www.post76.com/discuss/images/common/back.gif
maybe that sound track wasn't dolby compliant .....
but remember subwoofers have their own amplifiers ....
no meaning for a "max recoded level"

alzard 發表於 2009-10-11 00:37

Accroding to Dolby, LFE max recorded level is 115db. If sound output level was measured at 125db , the amp volume should be +10db?? May be it is a peak output level or I'm wrong.
ryanenen 發表於 2009-10-10 23:14 http://www.post76.com/discuss/images/common/back.gif

Don't forget room gain and other factors when you do the measurement :)

cessna 發表於 2009-10-11 00:39

我就多數-15至-10

rlwk2009 發表於 2009-10-11 00:49

用中置做標準,其他跟中置{:6_193:}
timmywan 發表於 2009-10-11 00:34 http://www.post76.com/discuss/images/common/back.gif
我都係用喱種方法，效果唔錯{:6_193:}

aw11onfire 發表於 2009-10-11 00:52

jessica係聾嫁,你唔好call佢啦{:6_238:}
timmywan 發表於 2009-10-11 00:40 http://www.post76.com/discuss/images/common/back.gif
{:6_243:} {:6_243:} {:6_243:}

IDM 發表於 2009-10-11 06:57

805, 75db ref, -18db normal~

bbsai 發表於 2009-10-11 10:38

http://www.hometheaterhifi.com/volume_7_2/feature-article-misunderstood-lfe-channel-april-2000.html

reference link
{:1_345:}

ricoy288 發表於 2009-10-11 11:55

-18 to -30db.

睇下咩時間用．{:6_238:}

Beginner 發表於 2009-10-11 12:33

I am using Denon 1909

For concert, up to -10db
General use is -25 ~ -30db

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