丹麦喇叭

huangkang

点解好多欧洲的喇叭，特别是丹麦，都是4 ohm. 4ohm是不是难推过8ohm？
好似Dali, Gamut and Dyna...

xerxeshowie

IMO,
A 4 ohm Speaker require the amp to double its power output x 2 in 4 ohm than in 8 ohm models,

so some amp may not able to handle the demand and shutdown or burnout !

I try both Marantz & Cambridge Audio do OK la

So choice a high current amp to drive a 4 ohm speaker la

ccli1996

如果單睇數字，假如對喇叭效率(音壓/輸入功率)是一樣，咁當然4ohm嘅喇叭所須要從Amp輸入的推動電流比8ohm喇叭要大一倍，才可以提供相同嘅音壓(即人耳感覺所謂夠唔夠聲，但好唔好聲又是另一回事)，但喇叭輸入阻抗其實是幾複雜，不是一個簡單數字，而是根據不同頻率有不同阻抗，是一個隨著播放緊嘅音樂內容不斷在變化，一般喇叭只寫出來的spec是nominal阻抗，有些喇叭就會注明最低阻抗，如果喇叭一開始已spec nominal阻抗爲4ohm，咁就適宜找些Amp有清楚spec寫明可推4ohm或更低如2ohm嘅輸出功率，還要輸出功率數字最好係double上，咁就對部Amp係應付複雜樂章及低阻抗嘅情況下能維持線性嘅輸出功率有多點保障

天下第一刀

丹麦ScanSpeak 8 Ohm X50% +4 Ohm X 50%
8 Ohm Made in Denmark.

......

huangkang

多谢各位师兄解答，我的后级是：http://www.caryaudio.com/products/sa-200-2/ 够力推吗？
Damping Factor是大于400又点解？

xerxeshowie

huangkang 發表於 2015-4-21 20:20
多谢各位师兄解答，我的后级是：http://www.caryaudio.com/products/sa-200-2/ 够力推吗？
Damping Factor ...

2 x 350 watts @ 4 Ohms ok war
from 20Hz to 20KHz

怎麽理解 Damping Factor
http://www.hiendy.com/hififorum/ ... hread&tid=47050

huangkang

我这部后级推Dali Rubicon 6 or Gamut Phi 5够吗？

ccli1996

Damping factor 係音響上嘅理解一般為喇叭輸入阻抗與擴音機輸出阻抗之比例，理想嘅擴音機輸出阻抗應為越細越好，而喇叭輸入阻抗可由1-8ohm，所以damping factor會是越大越好，不過，此只是一個定義出來給量度及比較嘅數字，它有多大代表多好聲(特別對發燒友來講，對低音最終嘅控制力與表現)，及怎樣從這數字反映最終推出來嘅效果(booming定係會收得太緊)，係未有一致定論

至於Cary SA-200夠推那兩對喇叭嗎？
以佢係4ohm嘅輸出功率數字有幾百W，應該冇懷疑，唯一考慮只是它沒有2ohm時嘅輸出功率，那兩對喇叭都是nominal 4ohm，有理由相信它們嘅輸入阻抗在某些音樂頻段時是會低於4ohm，係個啲情況下，咁對部Amp能維持足夠及線性嘅推動力就有啲擔心，這些都只是從規格數字上作出嘅推斷，希望俾到樓主作一些參考，因為實際都係要接上聽過才知最終效果得唔得

xerxeshowie

huangkang 發表於 2015-4-21 20:42
我这部后级推Dali Rubicon 6 or Gamut Phi 5够吗？

Yes both can,but this price your can have Dynaudio Excite X38
http://www.dynaudio.com/int/home ... cite/excite_x38.php
https://www.facebook.com/DynaudioGroup/posts/799738800069841
http://www.6moons.com/audioreviews/dynaudio7/1.html

huangkang

xerxeshowie 發表於 2015-4-21 09:36
Yes both can,but this price your can have Dynaudio Excite X38
http://www.dynaudio.com/in ...

Are they made in China?

xerxeshowie

huangkang 發表於 2015-4-22 01:42
Are they made in China?

作工质感很棒,Made in Denmark,丹麦生产制作.
http://www.hdav.com.cn/cp/yx/20150112_1660.html

天下第一刀

huangkang 發表於 2015-4-21 20:20
多谢各位师兄解答，我的后级是：http://www.caryaudio.com/products/sa-200-2/ 够力推吗？
Damping Factor ...

Damping Factor吾系越大越好﹐每種喇叭對阻尼的要求都吾同﹔後級的阻尼過大聽感系沒有彈力冇尾音﹐可以用細喇叭線調整﹐或者在保障後級閉環增益不變的前提下調低開環增益﹔後級的阻尼過細聽感系低音模糊收得慢﹐或者在保障後級閉環增益不變的前提下調高開環增益。我用最大的喇叭線﹐調後級的開環增益來使聽感個人滿意﹐聽到高中低聽感平衡為止。

huangkang

xerxeshowie 發表於 2015-4-21 20:11
作工质感很棒,Made in Denmark,丹麦生产制作.
http://www.hdav.com.cn/cp/yx/20150112_1660.ht ...

Thank you, do you know how much thay cost? I am looking for USD$5k~$6k speakers, I am using Paradigm Studio 100 v5 which cost USD$3500.

xerxeshowie

huangkang 發表於 2015-4-22 19:52
Thank you, do you know how much thay cost? I am looking for USD$5k~$6k speakers, I am using Paradi ...

Dynaudio Excite X38 (Mains)
MSRP: $4,500/pair USD
http://www.hometheaterhifi.com/f ... 38-x14-and-x24.html

You can go up to Dynaudio FOCUS Series
Dynaudio Focus 340 Loudspeaker Made in Denmark
Price:        $6,500.00
http://www.dynaudio.com/int/home ... focus/focus_340.php
http://www.dedicatedaudio.com/inc/sdetail/4705/31446
http://www.6moons.com/audioreviews/dynaudio5/1.html
https://www.youtube.com/watch?v=ymqGC3QRIhE
www.dynaudio.com/int/pdf/DYN_Focus_INT.pdf
www.dynaudio.com/manuals/DYN_Focus_manual.pdf
www.dynaudio.com/int/pdf/Focus_Stereoplay_Engl.pdf

Check out some Dynas Video too
https://www.youtube.com/watch?v=qIbf96IpVe8
https://www.youtube.com/watch?v=U8I9K3yPJf4
https://www.youtube.com/watch?v=LiLCKFNW9oU
http://www.meetgadget.com/gadget ... s/video/e5Ct35LzqSc

huangkang

xerxeshowie 發表於 2015-4-22 09:06
Dynaudio Excite X38 (Mains)
MSRP: $4,500/pair USD
http://www.hometheaterhifi.com/floor-standing-s ...

This pair of speaker fit my target, but is it hard to push?

xerxeshowie

huangkang 發表於 2015-4-23 01:18
This pair of speaker fit my target, but is it hard to push?

Dyna are easy to push, they like to play very loud !

The question is How Can you get the Best/Most Out of It,

My Dyna took Over 6 Months to Run-In !

It need a powerful/Big Amp to realize it's True Potential !

Once run-in, you will keep playing the music non-stop la !

You will hear details you never heard before, all CDs are new again !

Lots of Brands use Dyna spk to demo their products on taiwan audio show !
http://www.my-hiend.com/vbb/showthread.php?8891-2015年高雄國際HI-END音響大展實況報導

rogerchou

huangkang 發表於 2015-4-22 19:52
Thank you, do you know how much thay cost? I am looking for USD$5k~$6k speakers, I am using Paradi ...

這個raidho副牌可能很適合,scansonic hd mb-3.5 約5,000USD,鋁帶高音+2*4.5"碳纖維中音+2*側邊鋁盆低音。
http://www.scansonic.dk/hdproduc ... m-floorstander.4055
聽聽看:巴哈的無伴奏,重播的很好。
https://www.youtube.com/watch?v=4P5jDXktWN8

xerxeshowie

rogerchou 發表於 2015-4-23 13:05
這個raidho副牌可能很適合,scansonic hd mb-3.5 約5,000USD,鋁帶高音+2*4.5"碳纖維中音+2*側邊鋁盆低音。 ...

OMG Dyna finally meet its nemesis

scansonic hd mb-3.5 looks like a killer,

But the Side Firing Woofers may make placement a challenge ? is it ?