Crossover 問題

breadvan

回復 9# ericcch

If you do that it means all frequency under 100hz will be sent to the woofer.

If you have one of those frequency sweep CDs, may be you can play it to see if this is the best way to go.

savage121212

如果喺十仔度set就扭去bypass，如果無就扭到最大，如果喺部AmP度校，就統一校90或者100，俾隻十仔做多啲嘢！

nicknick

回復  chung190030


    唔好意思,啱啱再CHECK返個SPEC, 中置最低系80hz先啱。
   
      若果set 120... ...
ericcch 發表於 2012-3-1 15:54

會！正是我擔心的地方。
其實人耳在100Hz打上開始察覺到方向，但你的前置最低90Hz, set 太盡也不好，唯有crossover set做100Hz

pooh5210058

ching 如果 Crossover frequency : 600Hz & 3.0KHz  
frequency Response +/- 3dB :    50Hz - 35 KHz咁點Set?

nicknick

ching 如果 Crossover frequency : 600Hz & 3.0KHz  
frequency Response +/- 3dB :    50Hz - 35 KHz咁點S ...
pooh5210058 發表於 2012-3-1 19:59

即係你隻喇叭最低可以落到50Hz, 咁視乎你隻喇叭出來的低頻的質素及你自己的口味，建議可選60Hz或以上，一般大路會選80Hz

pooh5210058

回復 15# nicknick


    thx ar ching

ericcch

會！正是我擔心的地方。
其實人耳在100Hz打上開始察覺到方向，但你的前置最低90Hz, set 太盡也不好，唯有 ...
nicknick 發表於 2012-3-1 19:52

試咗SET去100, 真系比80現形咗...... 不過兩害取其輕, 唯有繼續用100先

目木

唔好意思, 需要麻煩大家,
其實我唔係好識睇speaker的spec.

以下的spec. 其實代表個speaker個frequency係幾多呀?
front: QUAD L-ite: Frequency Response (-6dB) 70Hz - 24kHz  <-- 不明白-6dB的意思?
Center: QUAD L-ite : Frequency Response (-6dB) 80Hz - 24kHz
Surround: Mirage OS3: Frequency Response 70 Hz - 20 kHz

如果crossover set 80, 效果可以嗎?

front: QUAD L-ite
Transducer Complement 2 Way
Cone Bass Driver 100mm / 4
Cone Bass / Mid Driver  n/a
Soft Dome Tweeter  25mm / 1
Nominal Impedance  6 Ohms (compatible with 8 Ohm amplifier outputs)
Frequency Response (-6dB) 70Hz - 24kHz
Upper Limit (-10dB)  32kHz
Power Handling – Continuous  75W
Power Handling – Rec. Amp. 30-120W
Enclosure type  Ported
System Fb  70Hz
Crossover Frequency(s)  2.2kHz
Construction  15mm MDF
Dimensions (H x W x D) 225 x 135 x 160mm

Center: QUAD L-ite
Transducer Complement 2 Way
Cone Bass Driver 2 x 100mm / 4
Cone Bass / Mid Driver  n/a
Soft Dome Tweeter  25mm / 1
Nominal Impedance  6 Ohms (compatible with 8 Ohm amplifier outputs)
Frequency Response (-6dB) 80Hz - 24kHz
Upper Limit (-10dB)  32kHz
Power Handling – Continuous  85W
Power Handling – Rec. Amp. 30-150W
Enclosure type  Sealed
System Fb  75Hz
Crossover Frequency(s)  2.5kHz
Construction  15mm MDF
Dimensions (H x W x D) 135 x 340 x 160mm

Surround; Mirage OS3
Frequency Response 70 Hz - 20 kHz
Nominal Impedence 8 Ohms
Power Handling 150 Watts
Recommended Amplifier Power 10 to 150 Watts
Impedance 4 Ohms minimum
Tweeter 1-inch pure titanium hybrid
Midrange 4.5” polypropylene titanium deposit hybrid woofer with phase plug and patented Ribbed Elliptical Surround technology
Room Efficiency 89 dB
Crossover Point 2,7kHz
Inputs High quality 5-way binding post

chhanthony

唔好意思, 需要麻煩大家,
其實我唔係好識睇speaker的spec.

以下的spec. 其實代表個speaker個frequency係 ...
目木 發表於 2012-3-2 13:04

-6dB係指雖然對speaker係去到70hz但真係去重現70hz嘅會比正常音量-6dB，所以只係數字遊戲
佢寫去到30hz (-20dB)都得

breadvan

-6dB係指雖然對speaker係去到70hz但真係去重現70hz嘅會比正常音量-6dB，所以只係數字遊戲
佢寫去到30hz ...
chhanthony 發表於 2012-3-2 13:25

Yes agree this is kind of strange, usually spec would quote something like -3db, going to -6db really means very little.