土瓜灣/紅磡Hi Fi同好會 |
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回覆 (398): 土瓜灣/紅磡Hi Fi同好會
 
But the voltage is still steady in according to the incomeing signal, right?  
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output voltage is variable according to load impedance.  
 
 
 
So how does it sound like when mate with Lowther? Does it take advantage of the constant current?  
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i am happy with the result.  
 
all these were inspired by Nelson Pass many moons ago .......  
mdlover
11-11-30
17:36:38
回覆 (397): 土瓜灣/紅磡Hi Fi同好會
constant current output regardless of load impedance  
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But the voltage is still steady in according to the incomeing signal, right? Otherwise we would have variable loudness! And constant current meaning the amp has a huge reserve and does not suffer when the impedance fall. Is that correct?  
 
So how does it sound like when mate with Lowther? Does it take advantage of the constant current?
bobui
11-11-30
17:01:38
回覆 (396): 土瓜灣/紅磡Hi Fi同好會
Most good preamps were designed to have high load impedance input and lower impedance output. There isnt a strong reason to have a huge curent drive in a phono to mate with prremap. Phono is all about voltage swing and db gain, right?  
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gee.....aren't we talking about power amp ....?  
 
i'm not using a normal or usual transistor amp to feed the lowther, it's a constant current amp (transconductance amp).  
 
over 99% of our amplifier is traditional voltage amp ( a voltage source) which has a fixed voltage gain and output current is load dependent.  
 
a transconductance amp (a current source) is an amp that has a constant current output regardless of load impedance.  
 
mdlover
11-11-30
16:03:48
回覆 (395): 土瓜灣/紅磡Hi Fi同好會
 
 
Whaz the deal for this so called field coil Lowther?  
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好嘢嚟架。試吓啦。咇少少唔怕嘅。  
 
 
 
cpsjj
11-11-29
22:59:13
回覆 (394): 土瓜灣/紅磡Hi Fi同好會
Well, if you google field coil, that's what you get, Lowther lor. Hard to believe I know. But a few of your hi fi good friends are actually on Lowther, AER and the like! He He!
bobui
11-11-29
22:02:56
回覆 (393): 土瓜灣/紅磡Hi Fi同好會
Whaz the deal for this so called field coil Lowther? How come they can claim themselves to be Lowther?  
 
http://cgi.audiogon.com/cgi-bin/auc.pl?spkrfull&1323053509
icefox
11-11-29
20:36:57
回覆 (392): 土瓜灣/紅磡Hi Fi同好會
just deliver the goods !!!  
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Waiting for you to be back la. Are you?
bobui
11-11-29
17:04:07
回覆 (391): 土瓜灣/紅磡Hi Fi同好會
all this talk is just crap ...... just deliver the goods !!!
daiwok
11-11-29
16:59:11
回覆 (390): 土瓜灣/紅磡Hi Fi同好會
 
>If blow water can score, I should be in premier division.<  
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In this crowd, probably not! ;-)  
 
thekong
11-11-29
16:37:28
回覆 (390): 土瓜灣/紅磡Hi Fi同好會
Anyway, as a DIYer, I perfer valve phono. Certain and no question!  
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who can argue with you about your own personal preference!
drwkng
11-11-29
16:31:06
回覆 (389): 土瓜灣/紅磡Hi Fi同好會
the other around.  
 
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If blow water can score, I should be in premier division. Anyway, as a DIYer, I perfer valve phono. Certain and no question!
bobui
11-11-29
16:24:14
回覆 (388): 土瓜灣/紅磡Hi Fi同好會
 
You are an engineer/designer. I am a DIYer. Thats our difference!  
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i thought it sounded the other around.
drwkng
11-11-29
15:33:52
回覆 (387): 土瓜灣/紅磡Hi Fi同好會
whatever technology that makes it sound good is what i would use.  
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You are an engineer/designer. I am a DIYer. Thats our difference!  
 
 
bobui
11-11-29
13:35:45
回覆 (386): 土瓜灣/紅磡Hi Fi同好會
what did i do? have i misunderstood you? Please tell me.  
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your premise is that  
 
Phono is all about voltage swing and db gain,  
 
therefore  
 
you choose tube to implement it.  
 
 
my point is  
phono is about good sound  
 
therefore  
 
whatever technology that makes it sound good is what i would use.
drwkng
11-11-29
13:17:00
回覆 (385): 土瓜灣/紅磡Hi Fi同好會
improve your reading skill first^-^  
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what did i do? have i misunderstood you? Please tell me.  
 
 
bobui
11-11-29
12:58:21
回覆 (384): 土瓜灣/紅磡Hi Fi同好會
Ok, fine! You want a blind test? A solid State phono you pick or build and a valve phono I pick or build and we vote. Yes, I know sound is subjective but still, at the end of the day, is for human. Not the scope!  
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before a blind test, you have to improve your reading skill first^-^
drwkng
11-11-29
12:47:04
回覆 (383): 土瓜灣/紅磡Hi Fi同好會
it is better to use ss. phono is about good sound^-^  
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Ok, fine! You want a blind test? A solid State phono you pick or build and a valve phono I pick or build and we vote. Yes, I know sound is subjective but still, at the end of the day, is for human. Not the scope!
bobui
11-11-29
12:18:23
回覆 (382): 土瓜灣/紅磡Hi Fi同好會
Phono is all about voltage swing and db gain, right?  
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if that is the case, it is better to use ss. phono is about good sound^-^
drwkng
11-11-29
12:08:28
回覆 (381): 土瓜灣/紅磡Hi Fi同好會
 
I drive my lowther using solid state stuff ........ :-P  
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I am very interested to hear Lowther with a transistor amp. Personally, I do prefer phono in valve but for power amp, transistor is not incorrect. The fact that transistor itself is a lower impedance device require no output transformer is a big plus. For phono, the amplication factor is large, voltage swing is wide, valve is a more apporporiate device lor. Only let down by its noise and less stable than some of the best transistors, fet J-fet or what that doesnt glow!  
 
Most good preamps were designed to have high load impedance input and lower impedance output. There isnt a strong reason to have a huge curent drive in a phono to mate with prremap. Phono is all about voltage swing and db gain, right?
bobui
11-11-29
12:06:21
回覆 (380): 土瓜灣/紅磡Hi Fi同好會
Is that what drwkng has been doing? Ah, bad taste.  
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guilty as charged.  
 
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mine is even worst, i drive my lowther using solid state stuff ........ :-P
mdlover
11-11-28
15:57:53
回覆 (383): 土瓜灣/紅磡Hi Fi同好會
different soundstage.....  
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Hi Fi is a compromise! Always will be! May god will reward the risk taker!
bobui
11-11-26
20:53:02
回覆 (382): 土瓜灣/紅磡Hi Fi同好會
Looks OK!  
But 2 drivers in one cabinet may be slightly different soundstage......
DY
11-11-26
10:35:59
回覆 (381): 土瓜灣/紅磡Hi Fi同好會
Personal taste come first la!  
 
See! An original Lowther design can have more than one driver in one cabinet!  
 
Look sexy or ugly! Personal taste lor!
bobui
11-11-25
17:29:11
回覆 (380): 土瓜灣/紅磡Hi Fi同好會
Is that what drwkng has been doing? Ah, bad taste.  
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guilty as charged.
drwkng
11-11-25
11:54:34
回覆 (379): 土瓜灣/紅磡Hi Fi同好會
 
 
bad taste to listen Lowther by adding tweeter and bass.....  
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Is that what drwkng has been doing? Ah, bad taste.  
 
 
 
cpsjj
11-11-25
10:39:04
回覆 (378): 土瓜灣/紅磡Hi Fi同好會
Ah, bad taste to listen Lowther by adding tweeter and bass.....
DY
11-11-25
10:23:07
回覆 (377): 土瓜灣/紅磡Hi Fi同好會
Threesome is forbidden. Lowther should be one on one lor.
bobui
11-11-25
05:19:10
回覆 (376): 土瓜灣/紅磡Hi Fi同好會
Lowther 搞成咁都仲算係Lowther?
icefox
11-11-24
19:12:25
回覆 (375): 土瓜灣/紅磡Hi Fi同好會
Another special one.  
 
Lowther is not the answer for most but if you having heard a pair in proper set up. Please try not to jump to the conclusion that old design drivers or speakers are slow and cannot produce the slam and DYNAMICsss. Open your ears please! Why not? Lowther ain't expensive.  
 
The exterme light weight cone/coil construction together with their massive magnets excit the coil in and out in a much faster pace than many modern design drivers. Similar to the "power to weight" ratio we much talk about in cars.  
 
Yes, i do admit i sometimes try a bit harder than i should to excit friends here about Lowther. And thats only because...........many of us still feel exciting on light bulb amps. Try Lowther with a good clean 15Watts+ light bulb amp and you may be surprise to hear what you have been long for.  
 
And Lowther not necessary need to look ancient and completely distort your modern home setting!
bobui
11-11-23
17:26:00
回覆 (374): 土瓜灣/紅磡Hi Fi同好會
Different Lowther drivers.
DY
11-11-23
15:38:54
回覆 (373): 土瓜灣/紅磡Hi Fi同好會
A special one.
DY
11-11-15
12:50:09
回覆 (372): 土瓜灣/紅磡Hi Fi同好會
Wowwww! Single driver front and back loaded wooden horn. Simplicity is a luxury for the knoweldgeable few! Hope it really did sound exceptionable! We are always longing for the unusual. Post more photos please!
bobui
11-11-14
23:52:41
回覆 (371): 土瓜灣/紅磡Hi Fi同好會
daiwok
11-11-14
20:13:38
回覆 (370): 土瓜灣/紅磡Hi Fi同好會
daiwok
11-11-14
20:13:17
回覆 (369): 土瓜灣/紅磡Hi Fi同好會
Lowther corner horn.
DY
11-11-11
14:22:31
回覆 (368): 土瓜灣/紅磡Hi Fi同好會
This is a very special Lowther cabinet.
DY
11-11-05
14:58:37
回覆 (367): 土瓜灣/紅磡Hi Fi同好會
A special Harman Kardon Citation X CL-1 driver modified from Lowther PM6, middle with 3 aluminium foil.
DY
11-11-04
17:42:44
回覆 (366): 土瓜灣/紅磡Hi Fi同好會
first love!  
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Ah. my first love is actually ........a Lowther Acousta which i am still using after more than 18 years. The current pair is my second. Different from my first pair as it is the older version with a removable front baffle and the overall size is about two inches deeper.
bobui
11-11-03
16:19:45
回覆 (365): 土瓜灣/紅磡Hi Fi同好會
first love !  
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NO! Should be defeated and retreat or "undo" in computer jargon.... :-(
BenYC
11-11-03
16:09:18
回覆 (364): 土瓜灣/紅磡Hi Fi同好會
This is what got me started when I was in school....  
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first love !
daiwok
11-11-03
15:56:47
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