我自已感覺用細火amp推高db坐地好d....大力amp推低db書架梗係有d低音出唔度, 可能先天結構所限.

does it means, tube amp may be more suitable to control speakers in this respect?
"larger woofer is more difficult to control" I think it apply to most morden speakers, those speakers always use huge SS amp to drive or tube amp over 100W (100W for tube amp already high power!)
people use 12" woofer (like JBL) with tube amp (within two power tube), would sound very attractive, but I don't know if this set up can play loud full classical or rock? punch enough? any c-hing have experience? those speakers always got over 96db.. seems much easy for amp!!
in a room just 150ft, any problem to put big speaker like 12" woofer? some people say it's no problem if the amp can control the bass well.. is truth?

I think tube amp with power over 60W already in high power group.

I listen 300B (about 10~15W) to drive high efficiency (db) floor stand speaker quite good. I just mainly tend to listen voice(歌仔), 豉一下一下尼都ok, 好過書架, 但有可能一rock, 交響樂就唔掂..未試過.

a room of 150ft for 12" speakers, I guess not easy to get good sound due to setting up problem.

無錯, 古董horn或屏風喇叭當然適合用膽機推, 這類喇叭本身的設計就是for膽機推, 當年應還未有像樣的粒機在市場上流行, 但不要忘記它們的靈敏度100個db也叫做低, 閒閒地都110db或以上, 而且設計上連bi-wire都無, 即是話根本都無預你玩bi-amp添, 可想而知是幾易推, 用大火數粒機推反而惡聲.
但近期一些的如jbl 4344 有95db 四路15"低音加horn 睇數字唔算好難推, 用一對marantz 9推亦很靚可收貨, 但用2對bi-amp玩又更上一層樓, 而且4344的設計是可扭制令15"低音唔經內部分音玩外置電子分音, 要知道因一對喇叭大食的不是單元本身, 而是內部分音器, 咁即是話到這年代的horn+15"woofer已唔算易推, 好多超級發燒友都要用到4路電子分音再加8部數佰瓦的mono粒後去推這對4344, 何解? 你估他們唔知道只用部膽機推聽下蔡琴都好靚聲, 什至可能靚聲過用8部粒後推(我講中音慢節奏時), 但快節奏呢? 爆棚交響樂呢? 大合唱要數人頭呢? 只聽人聲用部一體式膽收音機都好靚聲呀! 好多人(包括我自己)聽音樂都唔係只聽人聲架麻, 但各人口味有唔同, 我用一對馬9夾一對krell後推我朋友的Focus FS-78S都試過, 一樣靚聲(應該話脫胎換骨), 點玩都得架.
所以現今大路或流行品牌喇叭的設計都比較適合多樣配搭, 死硬派喇叭廠係好靚聲, 但只適合for某種機或某種聲的, 始終唔會成為大路野.
而我個人認為只聽一對書架喇叭係好無引, 只可出到好硬爭的中低音, 根本完全無鬆化下潛的低音可言. 在150呎可試玩10"低音應無問題, 只要在礎鴗峓l音方面下點奶珓K可. 我有次上網友於友愛走峊禷R機, 坅飯廳加埋得個120'左右, 但岒旦鞝LTEC A7, 衣櫃咁大個箱, 問你服唔服. 妘s中/後置都要玩三路10", 根本聽過靚聲既低音係返唔到轉頭, 喇叭只會越玩越大, 18"...20"....

若同是 89db 的 bookshelf(6-7" woofer) & floorstand (10" woofer) 那*易推出平衡高/低音?

＞＞市面上九成九的speaker都是以1KHz既singal去度靈敏度, 但speaker係H-freq.同L-freq.既靈敏度都會衰減e.g -3db, 當然大口徑既speaker會衰減少的, 記住...世上無一隻speaker係平衡高中低音!

有說小喇叭要大 power "谷" 低音出來,
又有說大音箱大單完要大 power 去 drive...
到那*易推 D ? 重髡b那裡?

＞＞無論大細既speaker都會係H/L freq.既交流阻抗上起變化, 8ohm只不過係1KHz量度, 尤其以低頻怎為下降, 電流大的power amp無論什麼場合都絕對優勝.
"小喇叭要大 power "谷" 低音出來"是因其效率低....
還有, 就算細喇叭比你谷到bass出黎, 還要考慮其失真是比大口徑喇叭高. 房間的大小也會影響Bass的下潛力.

some pre-conclusion, please point out if wrong :
1/ no guarantee big or small speaker can play easy, is depend on design (even 4344 need to use bi amp to achieve better result), does it means, for amp/spks matching, feed them more then the spks will give more... until fulfill your need.
2/ hi current/damping factor amp are better for spks. but wait! still many many amp that the current or damping factor not high, what kind reference spks they use in manufacture lisenting room? their amp can drive those spks well?? if yes, still a lot speakers that not difficult to drive... any idea? 還是他門也騙了自己?!
3/ bigger woofer always gives better bass, how about 2x6" vs 1x10" ? is that alternative if space limit for big speakers?

I think the bass depends more on the cavity volume of your speaker than the driver's size. the bigger, the lower frequency your speaker can reach. another factor is the Q factor. the lower the smoother of the response or the impedance.

and sometimes these 2 factors are contradictory. the usually way to lower the Q factor is to put some put fibres like wool to kill the standing wave. however it will reduce the cavity volume.

＞＞＞ 3/ bigger woofer always gives better bass, how about 2x6" vs 1x10" ? is that alternative if space limit for big speakers?

小弟只係淳講自已聽感....

10" 好過 2x6", 大d出低音聽感舒服d, 細d出得好似假d, 細d唔代表下沉力量冇大咁好, 好比細隻超低單, 力大出低音好假(聽得唔舒服)

大喇叭有氣勢小喇叭有幼勢,睇口味啦最好一樣一對.

""大喇叭有氣勢小喇叭有幼勢,睇口味啦最好一樣一對""
睇...都幾大件事!!
有冇中和....若果 唔大唔細, 唔最高唔最低 ... =唔湯唔水??!!
地方淺窄, 只能容下 Mamimum 10"woofer 的窄箱, 有冇邊個品牌比較易相處?
ps. hifi is hifi not real, I can't expect hifi system gives "real" effect, just want to have something balance + some tasty = happy listening

地方淺窄應用小喇叭現今科學先進小喇叭even＜4"also produces balanced sound.

地方淺窄應用小喇叭現今科學先進小喇叭even＜4"also produces balanced sound. X2

just close your eyes and listen

本人喜歡大喇叭，面前目標天朗1寸單元，大喇叭高場夠闊、自然，細細聲聽果種享受真係成日都唔想出街。

RE:
1. 你都可以錦講, 當然你隻speaker要有番上下質數la.

2. 當然低current/damping factor 既amplifier價錢會平D la, 呇aD廠家對個Tested result要求也會低D

3. 2x6" VS 1x10" 要好睇你自己既要求la, 假設1隻6" woofer能下潛到80Hz, 兩隻6"都一樣只能下潛到80Hz, 但個"量"會穩定左同高左. 但1隻10" woofer係下潛到40Hz, 就係40Hz, 無多無少

以小弟自己所見...
有錢有地方, 玩三路大口徑
無錢無地方, 就玩6.5"兩路

hi,
yes I agree so, 11"~ 12" for ＞ 250ft or ＞350 .
for 150ft, 1 x 6"~ 7" is enough . 3 ways floorstander is better than 2 ways of course.

天籟 hing,

＞當設計喇叭時, 他們都會因個低音大了而用一d更靚阻擴更低的分音配件, 令個喇叭靈敏度高d易推d.
+++++++++++++++++++++++++++++++++++++++++++++

更靚阻擴更低的分音配件 = 個喇叭靈敏度高d易推d???

Really???

How about Dynaudio????

Thanks all C-hing.
I may further consider floorstand 6"~10"..
but most speaker's spec show 88-90 db in this range, but I'm sure some of them may be more easy to drive while some difficult, is this?

yes. It's very depend on your amplifier power output.

For example, Reference 3A L'INTEGRAL have 92db Efficiency, most ＞50W amplifier can drive her easy, but ATC SCM20SL is more difficult to drive if your amplifier power below 150W

6-8" woofer got too many choice ar.

Almost all brand got this range product. because it is the most suitable range for HK environment.

you may go to Soundstage.com to have a look at their measurement.

for my exp. , higher impedance (for bass range) 易推D