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Subwoofer Volume setting 的問題

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Subwoofer Volume setting 的問題

文章發表人 wmmokk 發表於 2005-08-02, 11:39

是否以Sound Level Meter 度在Amp Sub output 0dB 時 , Adjust Sub 上面個Volume switch 直至 Sound Level = 75dB :confused2:

然後先再adjust Amp Sub output 個 Level :sorry: :sorry:

另外 , 個Amp有Crossover , 咁個Sub set Crossover to max 定用Subwoofer Direct 好呢 :confused2:
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Re: Subwoofer Volume setting 的問題

文章發表人 Racingboy 發表於 2005-08-02, 12:03

wmmokk 寫:是否以Sound Level Meter 度在Amp Sub output 0dB 時 , Adjust Sub 上面個Volume switch 直至 Sound Level = 75dB :confused2:

然後先再adjust Amp Sub output 個 Level :sorry: :sorry:

另外 , 個Amp有Crossover , 咁個Sub set Crossover to max 定用Subwoofer Direct 好呢 :confused2:


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文章發表人 peterso 發表於 2005-08-02, 15:44

spl meter 對 bass 極唔敏感...用佢 set 咗再要加 5、6 db 至少 :a006: :a006: :a006:
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文章發表人 luckybeanbean 發表於 2005-08-02, 16:14

first, if you have small satellite speakers, you need to know how low it can output. If they can output 80hz, then you can set the subwoofer to 80hz. if they are very small speakers, you might need to set at 100hz or 120hz.
second, if your subwoofer has volume switch, you can either set volume at av amp or subwoofer. you can first set av amp to 0 for subwoofer and adjust the subwoofer volume to a good level. then later use av amp to do the fine tunning again.
usually, subwoofer volume level is hard to measure with sound meter. (you need to use slow, c-weighting in sound meter). It is better to use your ear to detect if it is loud enough or not. 耳仔收貨. play music cd, concert cd to listen will be better than play dvd. hope this helps

都末講phase :confused:
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文章發表人 chowchow 發表於 2005-08-02, 16:17

luckybeanbean 寫:first, if you have small satellite speakers, you need to know how low it can output. If they can output 80hz, then you can set the subwoofer to 80hz. if they are very small speakers, you might need to set at 100hz or 120hz.
second, if your subwoofer has volume switch, you can either set volume at av amp or subwoofer. you can first set av amp to 0 for subwoofer and adjust the subwoofer volume to a good level. then later use av amp to do the fine tunning again.
usually, subwoofer volume level is hard to measure with sound meter. (you need to use slow, c-weighting in sound meter). It is better to use your ear to detect if it is loud enough or not. 耳仔收貨. play music cd, concert cd to listen will be better than play dvd. hope this helps

都末講phase :confused:


:a012: :a012: :a012: :a012:
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文章發表人 yo yo ma 發表於 2005-08-02, 16:17

pls talk more about phrase.... I have a hard time tuning it. :045:
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文章發表人 chowchow 發表於 2005-08-02, 16:22

yo yo ma 寫:pls talk more about phrase.... I have a hard time tuning it. :045:


You have to try either 0 or 180 phase, you can hear the difference :004:
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文章發表人 luckybeanbean 發表於 2005-08-02, 16:45

yo yo ma 寫:pls talk more about phrase.... I have a hard time tuning it. :045:


does your woofer has 0-180 degrees knob incrementally, meaning you can turn to 10, 20, 30, 40......, or just push in for 0, push out for 180?
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文章發表人 SKA 發表於 2005-08-02, 16:47

不如買個咩都無得教果D "cheap" 嘢..........即係.......... :hypno: :hypno: :hypno:
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文章發表人 Panzer 發表於 2005-08-02, 17:01

check 前置喇叭最低輸出頻率時要留意有無衰減,例如最低輸出頻率為50Hz, -3db limit,雖然可以去到50Hz,但係到50Hz時個音壓就會比中頻時低50%,所以set cross-over frequency時唔好就咁set去個喇叭個最低點。
:007: :007: 開開心心玩影音 :004:
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文章發表人 wmmokk 發表於 2005-08-02, 17:10

luckybeanbean 寫:first, if you have small satellite speakers, you need to know how low it can output. If they can output 80hz, then you can set the subwoofer to 80hz. if they are very small speakers, you might need to set at 100hz or 120hz.
second, if your subwoofer has volume switch, you can either set volume at av amp or subwoofer. you can first set av amp to 0 for subwoofer and adjust the subwoofer volume to a good level. then later use av amp to do the fine tunning again.
usually, subwoofer volume level is hard to measure with sound meter. (you need to use slow, c-weighting in sound meter). It is better to use your ear to detect if it is loud enough or not. 耳仔收貨. play music cd, concert cd to listen will be better than play dvd. hope this helps

都末講phase :confused:


:sorry: :sorry:

Panzer 寫:check 前置喇叭最低輸出頻率時要留意有無衰減,例如最低輸出頻率為50Hz, -3db limit,雖然可以去到50Hz,但係到50Hz時個音壓就會比中頻時低50%,所以set cross-over frequency時唔好就咁set去個喇叭個最低點。


:sorry: :sorry: :question2: 我個Amp 得一個Crossover Frequency, 80Hz. 所以冇得攪 , 只是我想知個Sub set番Max Crossover 和 Subwoofer direct 係咪冇分別 :selfpun:
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文章發表人 luckybeanbean 發表於 2005-08-02, 17:39

wmmokk 寫:
luckybeanbean 寫:first, if you have small satellite speakers, you need to know how low it can output. If they can output 80hz, then you can set the subwoofer to 80hz. if they are very small speakers, you might need to set at 100hz or 120hz.
second, if your subwoofer has volume switch, you can either set volume at av amp or subwoofer. you can first set av amp to 0 for subwoofer and adjust the subwoofer volume to a good level. then later use av amp to do the fine tunning again.
usually, subwoofer volume level is hard to measure with sound meter. (you need to use slow, c-weighting in sound meter). It is better to use your ear to detect if it is loud enough or not. 耳仔收貨. play music cd, concert cd to listen will be better than play dvd. hope this helps

都末講phase :confused:


:sorry: :sorry:

Panzer 寫:check 前置喇叭最低輸出頻率時要留意有無衰減,例如最低輸出頻率為50Hz, -3db limit,雖然可以去到50Hz,但係到50Hz時個音壓就會比中頻時低50%,所以set cross-over frequency時唔好就咁set去個喇叭個最低點。


:sorry: :sorry: :question2: 我個Amp 得一個Crossover Frequency, 80Hz. 所以冇得攪 , 只是我想知個Sub set番Max Crossover 和 Subwoofer direct 係咪冇分別 :selfpun:


Subwoofer direct 唔知係乜 :coldsweat2: 應該一樣呱
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文章發表人 JM 發表於 2005-08-02, 22:07

呀wmmokk兄,個威佬登係唔係比較難tune?

:dont_un: :dont_un: :dont_un:
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文章發表人 MartinTong 發表於 2005-08-02, 22:38

:eusa_clap: :eusa_clap: :eusa_clap: :eusa_clap:
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文章發表人 VR4 發表於 2005-08-02, 22:40

咁深奧架.....我郬係做路經好過 :angry:
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