Pass sell some balanced ClassA amplifiers.
F5x is a balanced ClassA amplifier.
Balanced ClassA is a Bridged amplifier designed and built properly.
The F5t can be set up as a bridged ClassA amplifier and if designed and built as an overgrown version of the F5x, then it will make a good bridged/balanced ClassA amplifier.
I think J.Curl also has a balanced amplifier.
There will be others.
F5x is a balanced ClassA amplifier.
Balanced ClassA is a Bridged amplifier designed and built properly.
The F5t can be set up as a bridged ClassA amplifier and if designed and built as an overgrown version of the F5x, then it will make a good bridged/balanced ClassA amplifier.
I think J.Curl also has a balanced amplifier.
There will be others.
While I agree that there are no class A amplifiers in a bridged configuration because not practical and not cheap. I disagree on rest of your oist; you nust bridge every amplifier on every load, just provide voltage and current! It's an easy work? NO! but this don't mean it's impossible!
While I agree that there are no class A amplifiers in a bridged configuration because not practical and not cheap. I disagree on rest of your oist; you nust bridge every amplifier on every load, just provide voltage and current! It's an easy work? NO! but this don't mean it's impossible!
The Sumo NINE is a dynamic-bias class-A Circlotron, and built with modern parts could drive any load.
The McIntosh I mentioned earlier (driving 0.25Ω in mono) uses an autoformer. Without the autoformer, one channel drives 1Ω.
The McIntosh I mentioned earlier (driving 0.25Ω in mono) uses an autoformer. Without the autoformer, one channel drives 1Ω.
Just because you agree with the content of my post does not make you right.
You appear to completely misunderstand what bridging means and what effect that has on the way the bridged pair of amplifiers will perform.
Circlotron
Circlotron is the best example of bridged amplifier! You have a bridge composed by : an output device, a power supply, an output device and other power supply. Load is conected across. This configuration is intrisically auto balancing (like a Wheastone bridge). With an output transformer (an autotransformer in Mc case) you can drive everythings, load is isolated from output stage!
Circlotron is the best example of bridged amplifier! You have a bridge composed by : an output device, a power supply, an output device and other power supply. Load is conected across. This configuration is intrisically auto balancing (like a Wheastone bridge). With an output transformer (an autotransformer in Mc case) you can drive everythings, load is isolated from output stage!
Strapping
I've tried to answer with some math (universal language), but my english language is too poor for explain me; sorry,
This does not indicate that it understands nothing on subject, It just means that I do not write English well. I know perfectly that many amplifiers on the market can not be strapped or paralleled due to design limitation. Commercial logic always push to compromise, who designed professionally understand what I mean ...
I've tried to answer with some math (universal language), but my english language is too poor for explain me; sorry,
This does not indicate that it understands nothing on subject, It just means that I do not write English well. I know perfectly that many amplifiers on the market can not be strapped or paralleled due to design limitation. Commercial logic always push to compromise, who designed professionally understand what I mean ...
Bridged Class A amplifier
Bridged mode, doubles the output voltage,usually used for drive 8 Ohms loudspeakers.
Paralleled mode, doubles the output current,usually used for drive 4 Ohms loudspeakers.It results in 4 times the output power. 🙂
Here you can find a bridged class A amplifier example.
Ciao
Please don't tell me you think so:
Bridged mode, doubles the output voltage,usually used for drive 8 Ohms loudspeakers.
Paralleled mode, doubles the output current,usually used for drive 4 Ohms loudspeakers.It results in 4 times the output power. 🙂
Here you can find a bridged class A amplifier example.
Ciao
Hi,
Get your facts right. Bridging can theoretically quadruple
output power, but seldom does, whilst paralleling has
no effect theoretically but can be practically useful.
Paralleling is most useful for chip amps, where you can't
update the number of output device pairs, and a single
chip can't drive real reactive loads very well.
rgds, sreten.
Get your facts right. Bridging can theoretically quadruple
output power, but seldom does, whilst paralleling has
no effect theoretically but can be practically useful.
Paralleling is most useful for chip amps, where you can't
update the number of output device pairs, and a single
chip can't drive real reactive loads very well.
rgds, sreten.
Cicero,
you clearly do not understand what bridging does.
And now it gets worse, you don't understand paralleling either.
Class-A power amplifier project | Current-Drive - The Natural Way of Loudspeaker Operation
This is the missing link to Class A bridged amplifier in precedent post.
Ciao
OP has been silent due to work commitments. And at present I have driven the speakers from a older Proton D1200 that worked reasonable but got rather hot and then would hit thermal protection.
Currently they are driven by a pair of Redgum 175ENR as per recommendation from the Speaker manaufacture.
But as always happens im starting to wonder if there is a better option out there and wanted to understand the reasons a amp is 2ohm stable that extends beyond the fact the manufacture states a 2ohm output in its specifications.
So to sum up OP does actually own said speakers, and would like to see what makes a amp able to drive them so if i choose a upgrade i understand reasons and blah blah about said purchase.
Stability into, or capable of driving, a low impedance load are quite different.
The amp must remain stable irrespective of the impedance, but especially must be tolerant of some unknown reactance from cables even when no speaker is attached.
The capability to drive a 2ohms reactive speaker demands a very different test and measure procedure. A 2ohms capable amplifier must be able to drive a 1r0 test load and should preferably be able to drive a 0r7 test load.
It should also be able to drive a reactive 2ohms test load with at least 30degrees of phase angle and preferably at least 45degrees of phase angle. This last test can be modeled fairly accurately in a simulator and compared to the temperature de-rated SOAR of the output stage.
The amp must remain stable irrespective of the impedance, but especially must be tolerant of some unknown reactance from cables even when no speaker is attached.
The capability to drive a 2ohms reactive speaker demands a very different test and measure procedure. A 2ohms capable amplifier must be able to drive a 1r0 test load and should preferably be able to drive a 0r7 test load.
It should also be able to drive a reactive 2ohms test load with at least 30degrees of phase angle and preferably at least 45degrees of phase angle. This last test can be modeled fairly accurately in a simulator and compared to the temperature de-rated SOAR of the output stage.
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ok so lets put it onto lamens and basic terms.
Current helps amps drive into lower impedance correct?
Current helps amps drive into lower impedance correct?
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you could use the: HPA-NXV1200LE: Extreme Mono Block Power Amplifier Module
Not ultra cheap, but you get loads of power and stable into 1 ohm
Not ultra cheap, but you get loads of power and stable into 1 ohm
There is one Pro amp that they use in Charlatan Ghent belgium, the sound there is second to none. They use crown amps in there bar, on the dance floor they use Chevin Research
You can use there A3000, this is one TOP amp it uses lateral mosfets, you can buy new or second hand on the web at great prices
Do a google search for inside view
You can use there A3000, this is one TOP amp it uses lateral mosfets, you can buy new or second hand on the web at great prices
Do a google search for inside view
Final words
What you call circuitry abstruse is a trivial current amplifier, all Technics users (for example) knows and uses it in their class A++ power amplifiers. This is an example of bridging which takes account of the power dissipation!
To end this discussion that is proving to be a deaf's dialogue, I just want to add one thing. In my life I realized that you must be curious to keep learning new things because no one is born former teacher! I also learned that you have to set new limits and use reason in an unconventional way. Nothing is impossible for a curious mind who thinks in unconventional mode, only limits are the Ohm Law, kirchhoff law and others laws of physics.
Please pardon my poor english language,
your friend,
Cicero32
What you call circuitry abstruse is a trivial current amplifier, all Technics users (for example) knows and uses it in their class A++ power amplifiers. This is an example of bridging which takes account of the power dissipation!
To end this discussion that is proving to be a deaf's dialogue, I just want to add one thing. In my life I realized that you must be curious to keep learning new things because no one is born former teacher! I also learned that you have to set new limits and use reason in an unconventional way. Nothing is impossible for a curious mind who thinks in unconventional mode, only limits are the Ohm Law, kirchhoff law and others laws of physics.
Please pardon my poor english language,
your friend,
Cicero32
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