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[#1] Power amp 唔應該用 Power Conditioner?    
如題.
cwcskk
個人訊息 會員
218.xxx.xxx.159
2012-07-08 20:57
[#2] Power amp 唔應該用 Power Conditioner?    
use a conditioner that is not current limiting and u will be ok
cpu8088
個人訊息 會員
115.xxx.xxx.214
2012-07-08 21:54
[#3] Power amp 唔應該用 Power Conditioner?    
is power conditioner only functioning as current limiter ?
how does it react to peak music passages when the demand for current suddenly increases many time average value ?
what might happen when sudden increase demand for secondary current feeds back to primary, which in turn causes a decrease in primary voltage ?
simply stated, can power conditioner handle transient response?



kitahara0011
個人訊息 會員
97.xxx.xxx.8
2012-07-08 23:41
[#4] Power amp 唔應該用 Power Conditioner?    

how about using isolation transformer?

thx...
yourcousin
個人訊息 會員
210.xxx.xxx.210
2012-07-09 08:27
[#5] Power amp 唔應該用 Power Conditioner?    
No power conditioner, No isolation trans. No 排蘇. No mains treatment. Just plug it into the wall socket.

Not convinced? Perform an A/B comparison!
Derek2A3
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218.xxx.xxx.175
2012-07-09 10:01
[#6] Power amp 唔應該用 Power Conditioner?    
wall socket
bravo1972
個人訊息 會員
218.xxx.xxx.43
2012-07-09 10:43
[#7] Power amp 唔應該用 Power Conditioner?    
Different power amplifier may have different design; class-A, AB, D, T-amp.....etc. It's totally different on the power supply requirement.
It is difficult to say "應唔應該用 Power Conditioner", normal practice is to check the power quality of mains on the wall socket first.

最後修改時間: 2012-07-09 11:07:05
mcc_2001
個人訊息 會員
165.xxx.xxx.150
2012-07-09 10:53
[#8] Power amp 唔應該用 Power Conditioner?    
唔用。
BenYC
個人訊息 正式會員
202.xxx.xxx.95
2012-07-09 11:39
[#9] Power amp 唔應該用 Power Conditioner?    
The electricity supply in HK is stable and good quality. The cost effective approach is to direct plug into the wall socket with a nice power cord for power amplifiers, and preferrably with a dedicated 20A cable (or better) running back to the ELCB.

For China it may be different story as the electric supply is less stable. In such case, a premium quality power conditioner will add value, and such device will be very heavy duty (5KVA rating) and they could be expensive.
faimiu
個人訊息 會員
192.xxx.xxx.193
2012-07-09 18:14
[#10] Power amp 唔應該用 Power Conditioner?    
當然唔係,只不過大部分產品未能滿足後級電流要求,發燒友大多數插牆so,但當你用過好既filter係番唔到轉頭^_^
ming0119
個人訊息 會員
203.xxx.xxx.212
2012-07-09 18:42
[#11] Power amp 唔應該用 Power Conditioner?    
power amp..is solid state..or tube? they are quite different....
hahayanyan
個人訊息 會員
202.xxx.xxx.106
2012-07-09 18:43
[#12] Power amp 唔應該用 Power Conditioner?    
>>>The electricity supply in HK is stable and good quality.
Yes, HK utility is doing well for PQ issues, but not for users who generate a lot of harmonics; such as switching PS, energy saving bulb, and LAN on power (homeplug).....a lot more.
mcc_2001
個人訊息 會員
42.xxx.xxx.214
2012-07-09 20:09
[#13] Power amp 唔應該用 Power Conditioner?    
唔用x2

edn
個人訊息 會員
112.xxx.xxx.39
2012-07-09 20:33
[#14] Power amp 唔應該用 Power Conditioner?    
Mains whether stable or not can't be corrected by filters or isolations trans cos they are passive, unless you are talking about gears like the obsolete PS power plant which regenerates A/C or in simple terms an A/C powered regulated generator. But I do really doubt how many PS power plants are still in shape. Having said that, I do love to have one for my A/C turntable motor that's sensitive to A/C circles instead of voltage.

Power amps need power or current! V=IR, so the more current your amp draws the more voltage dropout you have if the R deviates from zero. Mains is only source thats close to zero impedance, why worsen it by adding stuff in the path? Things that shouldn't be there in the first place should be dropped.
Derek2A3
個人訊息 會員
119.xxx.xxx.140
2012-07-09 22:59
[#15] Power amp 唔應該用 Power Conditioner?    
Power conditioneer can do nothing for power amplifier. Only data-centre grade UPS with at least 10kVA regenerate 50hz output can do the job.
mcc_2001
個人訊息 會員
42.xxx.xxx.214
2012-07-09 23:29
[#16] Power amp 唔應該用 Power Conditioner?    
當你用過好既filter係番唔到轉頭^_^ X2
Too much EMI/ RFI in HK nowadays.

最後修改時間: 2012-07-10 00:38:24
com-buddy
個人訊息 會員
116.xxx.xxx.50
2012-07-10 00:37
[#17] Power amp 唔應該用 Power Conditioner?    
HiFi is fun because there is no single solution - Whatever suits best is the best solution...

My understandings power amplifier is power hungry and it is important to meet transient power demand. So one good solution is to directly plug to wall socket with a dedicated copper wire running back to the ELCB. A real nice 6-feet power cable (such as NBS, Kharma etc...) will add value as itself is a well-built passive filter. Good power conditioners or re-generators suited for power amplifiers could be expensive and bulky that i prefer to spend the money somewhere else.

Power conditioners could be synergetic for front end/source equipment that are sensitive to interferences. They are not necessarily cheap but still affordable.

It is good practice to isolate from devices causing interferences (such as PC, switching supplies etc..). It should stay at a different electric ring circuit connected to the ELCB, and it will do no harm to add simple noise filters proximity to these sources.
faimiu
個人訊息 會員
192.xxx.xxx.193
2012-07-10 08:14
[#18] Power amp 唔應該用 Power Conditioner?    
Shunyata Research Cyclops especially design for power amps. Robert Harley from The Absolute Sound use it. Wilson Audio, Audio Research and many reputated audio manufacturer/recording studo also use Shunyata Research power conditioning products.

http://www.shunyata.com/Content/endorsements-Man.html


Tubes
個人訊息 會員
116.xxx.xxx.43
2012-07-10 08:50
[#19] Power amp 唔應該用 Power Conditioner?    
Shunyata Research Triton Power conditioner.

Tubes
個人訊息 會員
116.xxx.xxx.43
2012-07-10 08:53
[#20] Power amp 唔應該用 Power Conditioner?    

can anyone educate me why isolation transformers are not good for power amps, assuming the transformers have 10 times more power than the power amps?

As the secondary coil "get" the power by induction, it should be very very very fast to handle sudden peak demand of power amp?

please help.
yourcousin
個人訊息 會員
210.xxx.xxx.210
2012-08-23 01:26
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