review33.com: 影音天地: 去家訪大家有無留意一樣野

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[#21] 去家訪大家有無留意一樣野我有兩對音箱，貼牆for av用，前者for stereo用，貼牆低頻離吾倒箱，還有些少“轟”，極不自然，大聲就出現boom情況，你話……拉出好或貼牆好！		ricky838 正式會員 14.xxx.xxx.140	2015-08-09 19:57

[#22] 去家訪大家有無留意一樣野
忘記放相

ricky838

正式會員
14.xxx.xxx.140

2015-08-09 19:59

[#23] 去家訪大家有無留意一樣野

呢檀嘢值幾多錢……？？？：

https://youtu.be/ykDMJ7lxUIw

ricky838

正式會員
14.xxx.xxx.140

2015-08-09 20:07

[#24] 去家訪大家有無留意一樣野

呢檀嘢又值幾多錢……？？？
Tin Pan Alley：

https://youtu.be/IcI9-xUbawU

ricky838

正式會員
14.xxx.xxx.140

2015-08-09 20:45

[#25] 去家訪大家有無留意一樣野
仲以為audio note真係可以貼牆，
原來叫你一路拉出係拉到咁出@_@

tmcc2006

正式會員
66.xxx.xxx.169

2015-08-09 20:50

[#26] 去家訪大家有無留意一樣野
Youtube不能作準何況背景及收音咪亦不同

Twitter

正式會員
182.xxx.xxx.10

2015-08-09 21:50

[#27] 去家訪大家有無留意一樣野
ricky383兄，後面對喇叭貼實後牆側牆，放正角落頭，仲有對高大d既擋住，真係好難出到靚聲。
不如影音共用一對，效果應該更好，賣左多出一對仲有錢落袋添。

koalaau

正式會員
202.xxx.xxx.124

2015-08-09 22:52

[#28] 去家訪大家有無留意一樣野
#26
個支有線咪係冇作用嘅！我以為部手機可以用外置咪，所以嘗試啫，錄完才知道……錄出來都係用手機內置咪錄，所以兩條片都係同一部手機錄。

#27
我已沒玩av了！

ricky838

正式會員
14.xxx.xxx.140

2015-08-09 23:07

[#29] 去家訪大家有無留意一樣野
#26
感覺結他及人聲有些少拆可能電平太大或是手機收音咪承受不了

#24
電平較正常而耐聽些少不過環境聲較多空曠反射聲及什音較多

P.S.不過youtube同手機始終難以作公平評估

Twitter

正式會員
182.xxx.xxx.10

2015-08-10 01:13

[#30] 去家訪大家有無留意一樣野
謝謝孟波兄詳細講解，因小弟有兩套組合在不同地點，第一套地方大，可作離牆擺放，在多年調整下，音場音色上也很滿意，
但第二套環境沒有很理想，地方小9X15呎左右喇叭要貼牆擺，在我個人多年經驗中，沒有遇到過，真的需要有經驗的師兄指點一下。
也真的需要親身體驗一下，所以我近來也時常問HiFi朋友，有無一些組合是在一般家居，一架40幾吋電視兩邊，一對喇叭，貼近牆壁，也能做出理想效果呢，有的話也可不可以讓我見識體驗一下呢，謝謝。

最後修改時間: 2015-08-10 01:47:11

正式會員
61.xxx.xxx.127

2015-08-10 01:39

[#31] 去家訪大家有無留意一樣野
Interesting thread. I have been puzzled by this but haven't had enough experiences, either mine or enough home visits to 'close to wall' placement. Just share some limited thoughts and experiences.

Lyngdorf is another guy (apart from Audio Note) to advocate that the speakers (even they are designed as free standing) could all put in the corners or at least the front wall. His argument is that bass is reinforced (so no lack of bass issue) and the the distance between the listener and the reflected sound from the front wall will be very similar to the direct sounds so smears are minimalized.

So how to deal with the extra bass? A good EQ, or at best, using Lyngdorf products. I talked to some UK dealers and one KEEPS SAYING for the best results for using Lyngdorf you have to put the speakers to the front wall. This is even indicated in the new amp manual. The reason is I guess attenuation of bass is so much easier if your speakers are placed at the front wall. If you want to deal with valleys produced by freestanding speakers placed in the middle of the room, even Lyngdorf or any other room correction device or EQ can't boost too much.

So he once said about woofer system but the principle is the same:
http://www.acousticsciences.com/media/articles/room-acoustics-audios-final-frontier
"Peter Lyngdorf: I agree they are opposing, but try to look at it this way: corner placement of the woofer will give you more total energy. Why will it give more total energy with the same amount of excursion from the cone? Simply because less of the energy generated by the speaker will be canceled by out-of-phase components interfering with in-phase components. So once you do precision equalization, you will get better timing of the signal. Really, you can say that the more SPL [sound-pressure level] you get at the listening position from a certain placement of the woofer system the less the signal you are receiving is out of phase and canceling. Of course, in most cases you end up getting too much energy, but that is so easy to take away with good DSP room correction. So that’s my very simple argument for corner placement."

But not sure how other high hands such as 孟波 deal with this problem.

I frequently saw gigantic speakers placed at the front wall, in HK's rooms and most frequently in Japan's domestic room - mostly JBL and Altec.

But those speakers have bass attenuation, especially vintage, I guess. Is that the magic? I don't know. I once have a pair of JBL 4301, and I did turn the bass -3db (or more) less through my preamp. I remember that it's better. Since I placed in just in front of the wall, it boomed to death and couldn't be listened without using the bass control in my Luxman C02 preamp.

Nowadays most amps and speakers still do not offer good bass attenuator or tone control. Very foolish and disastrous acts for consumers in less than ideal room. Simply moron.

Getting the bass and tonal balance could be a difficult job (of course it depends on how you value tonal balance and what your perception of tonal balance is).

zbigniew821

正式會員
119.xxx.xxx.120

2015-08-10 02:47

[#32] 去家訪大家有無留意一樣野
Regarding sound stage for close-to-wall speakers.

I just have very formative views on this subject.

There are two kinds of soundstages, both artificial.

1. One - the one stored in your sources. It's the soundstage contained in the remastered product - from some reverb added to the music, or very careful mixing of sounds from multi-mick with different depths information recorded by microphones and gets corrected / modified in the final product. Simply put, the sources can range from a anaerobic recording (I had a LP which has both anaeribic and studio version) to one with a carefully / badly crafted / reconstructed soundstage.

I call it SSS - soundstage information supplied in the source.

2. Your room. That's it. You could invite people to play music in your room and set up a soundstage at the front wall, or you can ask them to play the music in the middle of the room. Our psychoacoustic instinct may hope for the latter case. My point is, your room also has its own soundstage characteristics.

This is SSR soundstage information of the room.

Normally, when the speakers are placed in the middle of the room, you will have an extra layer of SSR on top of SSS, the sound stage info already encoded in the source. This matter is scientifically researched.

To put the speakers in the front wall, means reducing the room soundstaging effect to a less prominent position. We're listening less to the room, and more about the source.

The good thing is, if the source is good, you will listen the depth, width information more accurately as recorded in the source. With the room on, the stage experienced must be larger than the original one.

For purists, the near field positioning is the best.

For those who want to 'imagine some musicians a bit forward to your room', freestanding speakers create the illusion.

We can't have both worlds ... or unless you are using a highly damped room.

my two cents.

PS: to anwer :現在我想問問各位朋友自己系統上，當播FM新聞報導時，貼後牆擺喇叭的人聲離開喇叭平面有幾多，喇叭擺離後牆五呎時，人聲的深度在喇叭平面距離有幾多呎？

I guess for me, the TV new anchor sounds a bit away from the televison, or even if it's away, it's still close to the TV. (I am talking about TVB or now news, not FM). I am using my speakers to watch TV.

最後修改時間: 2015-08-10 03:18:20

zbigniew821

正式會員
119.xxx.xxx.120

2015-08-10 03:03

[#33] 去家訪大家有無留意一樣野
Only for reverb time, but the principle applies to other issues.

So one can' recreate the mixer's intended soundstage. Your room takes over or at least confused you a lot.