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In Reply to: How come my 103R sounds brighter when (transformer) loaded to 3 Ohms? /nt/ posted by Jeff Maxson on August 6, 2005 at 11:00:47:
What transformer is it?As the load impedance goes above source impedance the power is decreased. with the load impedance lower than the source current flow will be greatly impeded.
That and the fact the load impedance is a combination of resistance and reluctance (capacitance and/or inductance) which basically define a filter, like in a speaker crossover, and may now with the low resistance create an impedance at a certain low frequency casuing it to sound bright because those frequencies are missing.
My theory but in any case "don't do that!"
Follow Ups:
Yeah, I'm using a Denon AU-320, which has settings for 3 and 40 Ohms. The 3 Ohm setting sounds so much more dynamic and punchier, with a more forward high-end. I wouldn't say that bass was lacking at that setting, either tho.I've tried loading the 103R at 15 and 7 Ohms with resitors on the primary, but it still sounds better at 3.
How did you know you were loading it at 15 and 7 ohms? Did you open it up and see what values of resistors are being paralleled with the secondary when the 3/40 ohms switch is activated?You put those resistors on the primary, i.e. input side of the transformeer? I suppose an additional resistor could be put in parallel with the 40 ohm load to reduce it. Is that what you did?
I just know that "audiophile" values are to avoid the bright treble and prominent bass for a more subdued sound. Which is what it was like at the 40 Ohm setting.Yes, I paralleled the resistor with the 40 ohm load to reduce it to the other values.
Has anyone else played music? Am I the only one who cares about timbral accuracy?A brass instrument should BLAT out the sound. It is not smooth and refined. An Oboe will quiver. Smooth and refined makes it sound like a constipated Clarinet. Dulling the sound makes the first and second Violin lines congeal together. Violas sound like upper register Cellos.
Please!!! A true audiophile should be someone trying to somewhat reproduce true high fidelity sound. They would want a 4 ohm resistor. The so called audiophiles that want homogenized sound should save their money, their time, and their energy for other pursuits.
Make sure the soul is communicated in your music and you will always find satisfaction.
I generally with the above except for the condescending tone.Hey, this is a hobby and the reasons one occupies his time with it varies. Some like to hear the toot of a horn and others like to toot their horn.
Sorry for the tone.I really have it out for those that want the sound like syrupy mollasas (spelling error most definitely.)
Power transfer is maximized when transformer input impedance is equal to cartridge output impedance.Current from a cartridge is maximized when its load is zero-ohms.
Reluctance is a term that deals with magnetism and has absolutely nothing to do with resistance.
Please, Garth, try to control yourself in the future.
Garth, I am reluctant and resistant to put in my two cents worth on this. The magnetic flux of the purist tonality is pushing the extremes of my linearity and I am afraid the warp core will rupture and the positive matter and anti matter will end our hapless universe.John is right when he asks me to shut up. I am sorry he is picking on you. Perhaps we should both duck and hide a while while John is on the prowl.....
John I said and I quote myself here:"As the load impedance goes above source impedance the power is decreased."
Ok, you can turn it around and say as the load impedance decreases power is maximized. But as it goes below the source impedance it is no longer optimized.Read more carefully and try to control yourself in the future.
BW - reluctance is the term used when capacitance and inductance make impedance. Impedance is not just resitance but also reluctance in the form of some capacitance and inductance.
I'm sorry (for you) but I believe I used the term correctly and in context.
So, you don't want to troll anymore on the Schröder arm? Ok by me.
That is what my brain scan has confirmed. If anyone sees a brain running around somewhere in cyberland, it is probably mine.This same resistance, reluctance, capacitance, and inductance is what makes cable reviews so fun to poke at. Transparent Audio builds networks just to make their stupid copper cable sound like silver. I can build silver cable for 1/1000th the cost and it still wipes a network speaker cable.
Heck my friends are experimenting all the time with better quality teflon CAT 5 and are getting pretty respectable results.
The truth in all audio reproduction is that each little piece has an important contribution to the junk or the magic we hear.
I just wish my brain showed some resistance. It might help end my reluctance and induce me to capacitate a bit more.
But otherwise...
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