有關Bass Trap

wadee

pwong888 發表於 2014-6-6 12:05
呢隻海棉bass traps 無用架, 我以前玩過, 密度吾夠, 只吸到 D D 高音, 對低音完全無用。要買就買GIk
htt ...

見到都驚!!

pwong888

wadee 發表於 2014-6-6 12:11
見到都驚!!

但係加左的效果, 好過你升兩级器材呀, 不過我有獨立家庭影院, 加乜都無人理。

Stanley5387

pwong888 發表於 2014-6-6 12:17
但係加左的效果, 好過你升兩级器材呀, 不過我有獨立家庭影院, 加乜都無人理。 ...

有寬闊獨立空間玩影音， 任你點調、點set同點加補品都得 ~ 超正！

chhanthony

Stanley5387 發表於 2014-6-6 13:14
有寬闊獨立空間玩影音， 任你點調、點set同點加補品都得 ~ 超正！   ...

建議樓主先了解現時家居喺邊一個頻段需要修正，
如果以玩AV嚟講，一般要處理嘅唔係低頻，係超低頻，
喺香港一般家居出現峰值好多時會係3Xhz至1XXhz左右，
如果要依靠Bass Trap的話咁要用到好大先有效。


http://www.bluefrogaudio.co.uk/bf%20400.html#

Dimensions :      

Imperial : 2ft wide x 4ft tall x  15.7” deep

Metric :     63.6cm x 123.6cm x 40cm deep

Effective frequency range : high frequencies down to 30hz

Applications  - Can be used :

- Corner mounted at 45 degrees across corners for bass trapping and control of mid / high freq reflections and flutter echoes

- Wall mounted flat to walls in bass hot spots for control of room modes down to 30hz and mid / high freq reflections

- Wall mounted directly behind or to the sides of speakers / studio monitors for control of SBIR (Speaker Boundary Interface Response)

- For control of mid / high freq reflections at ‘mirror’ points when mounted with the middle of the trap at ear height on side and / or rear walls

- Stand mounted if wall hanging isn’t possible. Please see real wood stands.

Summary :

The BF-400 Bass Trap is the best low frequency performer of all Blue Frog Acoustics products. It’s effective for treatment of room modes (peaks and dips in frequency response) down to 30hz, and is therefore a very serious trap that should be used when ultimate control of bass frequencies is required.

Made with real solid wood and can be varnished to any colour.

Shipping is pallet only for these traps due to dimensions. Please see here for details.

just my 2 cents.

the_1

pwong888 發表於 2014-6-6 12:05
呢隻海棉bass traps 無用架, 我以前玩過, 密度吾夠, 只吸到 D D 高音, 對低音完全無用。要買就買GIk
htt ...

C兄, GIK 香港有冇得賣架, 如果係美國訂運費都幾勁.

the_1

chhanthony 發表於 2014-6-6 13:54
建議樓主先了解現時家居喺邊一個頻段需要修正，
如果以玩AV嚟講，一般要處理嘅唔係低頻，係超低頻，
喺香 ...

C兄, 我就係想吸超低頻, 但呢款太大, 放唔到.

chhanthony

the_1 發表於 2014-6-6 14:14
C兄, 我就係想吸超低頻, 但呢款太大, 放唔到.

呢個係物理問題，越低嘅頻段就需要越大體積嘅Bass Trap去處理。

just my 2 cents.

keytai214

Bass Trap 厚度: 簡單推算 = 1/4 波長

如果 frequency = 60Hz , 波長:
343 = f x 波長
波長 = 343 / 60 = 5.7 m

1/4 波長 = 1.42m ...

當然, 不同 物料, 設計, bass trap 的厚度都有機會減少點, 但只是點點 ... ... 想吸 60Hz 要 1米多, 想再吸低一些的, 如 40 Hz 便要2米多 ... 30Hz , 2.8m

343 是音速 m/s , 但音速會受 溫濕度影響 ... ... 超複習 ...

所以 低頻的處理通常是
1. 避 ... 即改 speaker 擺位, 改 皇帝位
2. 擴散 ... 盡量把音頻 "打散"

Stanley5387

wadee 發表於 2014-6-6 12:11
見到都驚!!

呢啲嘢冇話靚定核突嘅， 最緊要都係自己同屋企人接唔接受到， 假如老虎要介意嘅， 一舊一舊嘅器材夠礙眼同霸佔空間啦！

wadee

Stanley5387 發表於 2014-6-6 16:49
呢啲嘢冇話靚定核突嘅， 最緊要都係自己同屋企人接唔接受到， 假如老虎要介意嘅， 一舊一舊嘅器材夠礙眼 ...

師兄如你要將器材等於bass trap，甘冇野好講!!