If they have eqivalent ratings, none.
I would suggest that size, mounting hardware and cost can affect sound by imposing constraits on other aspects of physical construction. Size and mounting hardware may dictate where it can be located in an enclosure which in turn could impose constraints on locating other components and wires. If you have a fixed budget, cost may impose/offer tradoffs with other components.
I would suggest that size, mounting hardware and cost can affect sound by imposing constraits on other aspects of physical construction. Size and mounting hardware may dictate where it can be located in an enclosure which in turn could impose constraints on locating other components and wires. If you have a fixed budget, cost may impose/offer tradoffs with other components.
Traffo's
My brother has conducted a number of tests......for stereo amplifiers within one box.
Dual Mono ie two separate transformers & recitiers gave.......better apprant separation/detail...Hi Fi
However using one transformer with dual secondaries & twin rectifiers gave less obvoius separation but a better feel of integration...........apprantly the effect is not subtle..
This was a subjective test at a reputed HI Fi Company in UK...
My brother stated mesurements alone proved two separate transformers were far superior........but blind subjective tests indicated the single transformer was preferred......
I can't explain this ......... I like dual mono ........ myself...
Just thought I would throw this little ..... nibble of info in...
My brother has conducted a number of tests......for stereo amplifiers within one box.
Dual Mono ie two separate transformers & recitiers gave.......better apprant separation/detail...Hi Fi
However using one transformer with dual secondaries & twin rectifiers gave less obvoius separation but a better feel of integration...........apprantly the effect is not subtle..
This was a subjective test at a reputed HI Fi Company in UK...
My brother stated mesurements alone proved two separate transformers were far superior........but blind subjective tests indicated the single transformer was preferred......
I can't explain this ......... I like dual mono ........ myself...
Just thought I would throw this little ..... nibble of info in...
D3,
You make a vaild point. It seems some small level of crosstalk can subjectively improve sonics. With torids, I have found similar results unless you increase the size of the transformers in the dual mono configuration. i.e. 1KvA in a stereo amp does not translate to 2 X 500vA in the dual mono. It probably translates to more like 2 X 800vA or higher. Probably due to the lower impedence of the larger transformers.
Regards,
Jam
You make a vaild point. It seems some small level of crosstalk can subjectively improve sonics. With torids, I have found similar results unless you increase the size of the transformers in the dual mono configuration. i.e. 1KvA in a stereo amp does not translate to 2 X 500vA in the dual mono. It probably translates to more like 2 X 800vA or higher. Probably due to the lower impedence of the larger transformers.
Regards,
Jam
I compared 200VA, 300VA and 400VA exactly same type Plitron toroids in GC and each sounded different. Using different brand toroid of the same power rating also brough different sonics.
The difference wasn't that big, but there was always preferrence with regards to amount of harshness (or glare), smoothness and overall body. I could live with all those transformers, if I didn't compare them directly side by side.
It seems like bigger was better, but I'm not completely sure about it yet. The bigger transformer was more dynamic, but also possesed more glare and less smoothness.
The difference wasn't that big, but there was always preferrence with regards to amount of harshness (or glare), smoothness and overall body. I could live with all those transformers, if I didn't compare them directly side by side.
It seems like bigger was better, but I'm not completely sure about it yet. The bigger transformer was more dynamic, but also possesed more glare and less smoothness.
I also compared diffrent brands of transformers a couple of times and the sonic diffrances were quite obvious,especially in preamplifiers.
It seems to me that better quality and more quiet transformers always sounded better.More buzzing ones being more harsh.
I now found a local company producing very high quality transformers for medical porpuses.They have electromagnetic and electrostatic shield and are fitted in plastic cans all filled with epoxy.They are three times more expensive than regular cheapest I can get but they are dead quiet ,even under big load,and sound very good.
Bartek
It seems to me that better quality and more quiet transformers always sounded better.More buzzing ones being more harsh.
I now found a local company producing very high quality transformers for medical porpuses.They have electromagnetic and electrostatic shield and are fitted in plastic cans all filled with epoxy.They are three times more expensive than regular cheapest I can get but they are dead quiet ,even under big load,and sound very good.
Bartek
I only tried EI 250VA transformers, and to me they sounded not as good as Plitron toroid. For some reason the air was missing (and I thought they woul dbe better). I didn't try C-core yet, but we might be getting some samples in a future.
Another interesting approach might be using 220V AC toroid with 110 V AC supply. This could produce some benefits. I alsi had some toroids from Definitive Technology with primary on the outside and they also sonded pretty good (and produced much less inrush current at turn on).
Another interesting approach might be using 220V AC toroid with 110 V AC supply. This could produce some benefits. I alsi had some toroids from Definitive Technology with primary on the outside and they also sonded pretty good (and produced much less inrush current at turn on).
Peter,
Please let us know about your results about the C-core. Who is the manufacturer and is it made in the States or Canada. Plitron has a low noise transformer for audio applications but they want big bucks.
Bartek,
You are right about the medical transformers. Which brand have you tried?
Regards,
Jam
Please let us know about your results about the C-core. Who is the manufacturer and is it made in the States or Canada. Plitron has a low noise transformer for audio applications but they want big bucks.
Bartek,
You are right about the medical transformers. Which brand have you tried?
Regards,
Jam
O-Core
Hello,
I read a lot on this subject and noticed in this regard the folowing site: http://www.hifituning.de/Transformatoren/O-Core/o-core.html
I managed to get some cores at : http://www.alphacore.com/ocore.htm
Unfortunatly I was unable to get info on how to wind these cores to find out what is promissed on these sites. It lookes interesting to me.
Has any one tried these ???
Best regards,
Jan
Hello,
I read a lot on this subject and noticed in this regard the folowing site: http://www.hifituning.de/Transformatoren/O-Core/o-core.html
I managed to get some cores at : http://www.alphacore.com/ocore.htm
Unfortunatly I was unable to get info on how to wind these cores to find out what is promissed on these sites. It lookes interesting to me.
Has any one tried these ???
Best regards,
Jan
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