正所謂有圖有真相之bass trap

10bucks360

用左bass trap後
除左聽感有分別
原來數據上都係有分別

張圖係今朝新cal, 但舊果張唔見左
不過大約都記得係邊
舊既大約係黑點及紅點位

<未有bass trap前>
50Hz差唔多係消失左
我個聆聽空間同sub仔實在太差了
cal完 50Hz也欠起碼7-8個db

<上左兩個bass trap後>
未cal前都欠20個db
cal完只係小左3-4db

而家d bass實淨左, 小左wowo聲
happy

10bucks360

raywan

From technical data, the Auralex Lenrd Bass Traps is not very effective in handling below 50Hz



What is the software that you are using to measure the frequencies response ?

10bucks360

From technical data, the Auralex Lenrd Bass Traps is not very effect ...
raywan 發表於 2011-5-1 16:10

because this is not "Auralex Lenrd Bass Traps"
the chart above is generated from SVS AS-EQ1

raywan

because this is not "Auralex Lenrd Bass Traps"
the chart above is generated from SVS AS-EQ1
10bucks360 發表於 2011-5-1 16:14

I see

According to my experience with the software of SVS AS-EQ1, the information is quite rough.

I believe you should use another software such as Room EQ Wizard with a Sound Pressure Meter.



Room EQ Wizard

10bucks360

I see

According to my experience with the software of SVS AS-EQ1, the information is quite rough. ...
raywan 發表於 2011-5-1 16:25

thanks, I'll try it later

raywan

thanks, I'll try it later
10bucks360 發表於 2011-5-1 16:34

Another good piece of investment is the XTZ Room Analyzer.

Very user friendly and easy to setup.

Highly recommended.






The measurements at my home by XTZ Room Analyzer

輸入聲量是 60dB，音頻反應曲線，低頻駐波 Room Mode 在 26Hz 左右特別明顯


Full Range 全頻 (20Hz~20,000Hz) 反應


Reverberation Time - RT60 殘響


努力改善的目標 Target (音頻反應 Reference ±5dB)

raywan

其實量度自己的家庭影院也有不同組合

(1) 免費 REW + Microphone / Sound Pressure Meter + 電腦 Sound Card

(2) XTZ Room Analyzer (All in One) --> US$250

(3) Phonic PAA3 (Personal Audio Assistant) --> US$500

(4) MLSSA --> US$2,750 (Ken Kreisel 建議我去買)

自己按實際需要去選擇吧！

10bucks360

其實量度自己的家庭影院也有不同組合

(1) 免費 REW + Microphone / Soun ...
raywan 發表於 2011-5-1 17:16

巧貴

raywan

巧貴
10bucks360 發表於 2011-5-1 18:30

(1) 免費 REW + Microphone / Sound Pressure Meter + 電腦 Sound Card --> ~HK$1,000

(2) XTZ Room Analyzer (All in One) --> ~HK$2,000

Not too expensive for a useful tool in tuning the audio system.

In fact, I consider it is worthwhile to be spent so as to helping you to achieve proper setting of your system.

JKC710

請問師兄你用果隻BASS TRAP要幾錢???

10bucks360

請問師兄你用果隻BASS TRAP要幾錢???
JKC710 發表於 2011-5-1 22:57

唔水錢, 人地俾

chongun

(1) 免費 REW + Microphone / Sound Pressure Meter + 電腦 Sound Card --> ~HK$1 ...
raywan 發表於 2011-5-1 20:55

XTZ Room Analyzer (All in One) 邊度有得買?

raywan

XTZ Room Analyzer (All in One) 邊度有得買?
chongun 發表於 2011-5-2 02:10

Get XTZ Room Analyzer from Hong Kong Agent:

Carn Brea Company Ltd.

9/F World Interest Building,
8 Tsun Yip Lane, Kwun Tong,
Kowloon
Tel: 852 - 2331 9889

chhanthony

我用DVE隻碟check過，我屋企40hz-60hz一段唔見咗，
將果一段嘅EQ 40hz 50hz 63hz加15dB都救唔到，
但又唔加得bass trap正係唔知點攪

chongun

回復 14# raywan


Thanks ching

10bucks360

我用DVE隻碟check過，我屋企40hz-60hz一段唔見咗，
將果一段嘅EQ 40hz 50hz 63hz加15dB都救唔到，
但又唔加 ...
chhanthony 發表於 2011-5-2 12:05

其他色既bass trap加唔加得

raywan

我用DVE隻碟check過，我屋企40hz-60hz一段唔見咗，
將果一段嘅EQ 40hz 50hz 63hz加15dB都救唔到，
但又唔加 ...
chhanthony 發表於 2011-5-2 12:05

Try to move your subwoofer to other locations may help as the current position of the subwoofer is not optimized.

raywan

其他色既bass trap加唔加得
10bucks360 發表於 2011-5-2 13:21

Dip in bass cannot easily be solved by adding bass trap.

The bass traps is only able to handle and reduce some of the peaks on bass region.

The most effective way to improve is trying to place the subwoofer at a more appropriate location.

PEQ may also be helped but it is only considered as the last method.

Therefore, a study on your room size, acoustic conditions as well as frequency response is important.

Hence, a user friendly Room Analyzer will make your life easy.

10bucks360

Dip in bass cannot easily be solved by adding bass trap.

The bass traps is only able to handle an ...
raywan 發表於 2011-5-2 13:54

我個玩機空間好細
已經做了能做的了
Subwoofer eq and bass trap