I wonder if there is a simple diy solution for for impedance matchang a 4ohm speaker with an amp that performs optimaly at 16ohms?
What I had in mind is diy solution for somthing like this:
Zero Autoformers, Impedance Multiplying Transformers [English]
What I had in mind is diy solution for somthing like this:
Zero Autoformers, Impedance Multiplying Transformers [English]
Actually this is for chip amp, thought it would be the same for a chipamp as for a tubeamp.
IF tour amp can drive 4 ohms safely, just connect them straight and forget about any imagined "performs optimaly at 16ohms"
Even if (slightly) true, any "improvement" will be more than destroyed by any reasonable transformer you fit there.
If absolutely incompatible, then you *can* use an autoformer, but its design carries some compromises like any other transformer.
Absolutely IMPOSSIBLE , does not even qualify as B.S.
And I may question the sanity of anybody who goes to great lengths and accepts lots of compromises to build an OTL amp and then couples it to the speakers using ... a transformer ...
Even worse if it's a power supply grade transformer primary, absolute madness.
And to boot wound on a toroid.
It will work, sort of.
Forget any pretense of HiFi if taking that route,mains designed transformers are designed for mains.
That said, that's what the Zero transformer is.
Will it?
I wonder how many billions of dollars could be saved worldwide by making amps able to drive any impedance just by changing a $ 0.05 resistor.
Ok, make that 10 cents for Stereo.
Let alone multiple transformer winding taps.
Good to know
Wonder where did you pull that from
EDIT:
Nonsense.
Sorry, not meaning to be agressive or anything, but it's the only word which describes it accurately.
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IF tour amp can drive 4 ohms safely, just connect them straight and forget about any imagined "performs optimaly at 16ohms"
Even if (slightly) true, any "improvement" will be more than destroyed by any reasonable transformer you fit there.
If absolutely incompatible, then you *can* use an autoformer, but its design carries some compromises like any other transformer.
Absolutely IMPOSSIBLE , does not even qualify as B.S.
And I may question the sanity of anybody who goes to great lengths and accepts lots of compromises to build an OTL amp and then couples it to the speakers using ... a transformer ...
Even worse if it's a power supply grade transformer primary, absolute madness.
And to boot wound on a toroid.
It will work, sort of.
Forget any pretense of HiFi if taking that route,mains designed transformers are designed for mains.
That said, that's what the Zero transformer is.
Will it?
I wonder how many billions of dollars could be saved worldwide by making amps able to drive any impedance just by changing a $ 0.05 resistor.
Ok, make that 10 cents for Stereo.
Let alone multiple transformer winding taps.
Good to know
Wonder where did you pull that from
EDIT:
Nonsense.
Sorry, not meaning to be agressive or anything, but it's the only word which describes it accurately.
Thank you for the reply, think I'll hunt for one more pair of drivers to get to above 8 ohm load.
My amp is a pioneer vsx d912 ( fairly cheap av amp), just sold my other amps in favor to this one. I have other speakers that are flatish 8 ohm but would like to use a pair of pioneer ad5200 wich are 4,9 ohm. Now I hope I will score more ad5200s
I used to live in Buenos Aires and have family there, hope the "votacion/ballotage" makes things better for the people of Argentina.
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It's a chip amp, should have posted in another forum section. Anyways I have dropped the idea to use a transformer of some sort to make my speakers match the preffered impedance load.
Thanks for all the replies.
Yes, you are correct of course it's designed for 8 ohm load, but sounds is supposed to be better north of 8 ohms hence my quriosity and questions (though apperently wrong forum section and lack of info on my part).
Sorry for have wasted your time with my noob question(s).
Best regards
Pepe
The question is fine (although in the wrong forum). It is the answers which fall short.Pepe said:
JonSnell Electronic said:
In order to specify a feedback resistance you need detailed knowledge of the circuit. In particular, what is the other resistance value and what closed-loop gain do you require? Otherwise you are simply telling us how long a piece of string should be, without knowing what the string is to be used for.JonSnell Electronic said:
[image][/image]I wonder how many billions of dollars could be saved worldwide by making amps able to drive any impedance just by changing a $ 0.05 resistor.
Ok, make that 10 cents for Stereo.
Let alone multiple transformer winding taps.
EDIT:
Is this resistor change true for chip amps allso?
Ok, make that 10 cents for Stereo.
Let alone multiple transformer winding taps.
EDIT:
Is this resistor change true for chip amps allso?
It was a rhetorical question (https://en.wikipedia.org/wiki/Rhetorical_question), showing the sillyness of the concept of not needing to match impedances at all, that anything could be accomodated by a simple resistor change.
Of course, impossible.
Of course, impossible.
Sigh, I'm going to move this to chip amps for all the good it'll do. There is so much misinformation in this thread I wouldn't even know where to start. Is it too much to ask people to think and verify before posting rubbish?- Status
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