Flat wire can make it one layer, but why wouldn't you have about the same inductance with the same total winding length, same number of turns, and perfectly stacked coil to coil with the flat wire?
Kindhornman
You will increase flux and reduce eddycurrents with it, increasing inductance.
If you want to increase the impedance, you will need longer or thinner wire.
Increasing the radius of the coil is a way. Otherwise you need to use resistancewire.
That will get hot quickly.
You will increase flux and reduce eddycurrents with it, increasing inductance.
If you want to increase the impedance, you will need longer or thinner wire.
Increasing the radius of the coil is a way. Otherwise you need to use resistancewire.
That will get hot quickly.
Using resistance wire wouldn't be a good way to optimize the precious resource of current in the gap, its a no-no in practical terms. Aluminium though has some value when extremely low moving mass is desired.
In reality if you can do a 16 ohm coil you can do a 12 ohm. You would use rectangular wire so you fill the maximum space. You also have to look at whether you are using pure copper wire or copper clad aluminum wire. B/L curve will change with the length of the wire.
cross posted
cross posted
With my long gap I don't see any reason you couldn't. But you have to have the return wire if it is only one layer and getting it back up still takes the thickness of the wire in the gap.You can lay the rectangular wire down on the thin side of the rectangle.
It's not going well for me today.
I'm just a native earthling, prone to making mistakes.
I ment thermal compression.
Go to home of Claus Futtrup to find out, why resistance increases with temperature in metals and what to do about it.
I'm just a native earthling, prone to making mistakes.
I ment thermal compression.
Go to home of Claus Futtrup to find out, why resistance increases with temperature in metals and what to do about it.
snup,
I'm not worried about power compression at this point.
Richard two layers is really the norm for that very reason, it is easier. I think most compression drivers use a single layer rectangular wire. Actually I wonder if the second layer running in a counter direction does any cancelling if they are perfectly lined up?
I'm not worried about power compression at this point.
Richard two layers is really the norm for that very reason, it is easier. I think most compression drivers use a single layer rectangular wire. Actually I wonder if the second layer running in a counter direction does any cancelling if they are perfectly lined up?
this is impossible.
the transformer does not create extra power. It just changes the voltage and impedance ratios.
If a chip can do 60W in single mode, then a bridged pair can do 120W.
Exactly the same as the total from the two chips. Nothing is gained, there is no magic involved.
If a BPA200 is 4 off 50W chips giving a total 200W into the load, then a transformer does not create an extra 200W to give 400W into the load.
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You can't have ferrofluid in woofers and in tweeters it is a bad idea, except in bad tweeters.
16 Ohm speakers shouldn't be a problem, Philips used to make 600 Ohm full rangers for transformerless tube amps (safety standards were a bit different then). If inductance becomes a problem, a shortening ring will do wonders.
Morel, their tweeters aren't that bad, bud I am not very enthousiastic about their midbass drivers. After I crashed one of them (back plate bump, design flaw, shouldn't happen with an expensive modern driver), I took it apart and put the 'hexawire' under a microscope. It looked perfectly round to my eyes. The very wide voice coil is based on a misconception btw.
16 Ohm speakers shouldn't be a problem, Philips used to make 600 Ohm full rangers for transformerless tube amps (safety standards were a bit different then). If inductance becomes a problem, a shortening ring will do wonders.
Morel, their tweeters aren't that bad, bud I am not very enthousiastic about their midbass drivers. After I crashed one of them (back plate bump, design flaw, shouldn't happen with an expensive modern driver), I took it apart and put the 'hexawire' under a microscope. It looked perfectly round to my eyes. The very wide voice coil is based on a misconception btw.
Just your opinion or do you have some reasoning and/or calculations to show?
Indeed.
Correct.
Tilting at windmills.
tilting at windmills?
Yet you confirmed "correct" to my statement
Calculation:
A 100W into 4r0 capable amplifier must deliver 20Vac and 5Aac into that 4r0 test load.
A bridged pair of these 100W amplifiers can still deliver 20Vac and 5Aac and the new load will see 40Vac and pass 5Aac.
For the above to hold true the new load MUST be 8r0. i.e. 20+20Vac divided by 5Aac reveals the value of the test load.
the general rule that ALWAYS holds true for bridging of two amplifiers is:
The bridged pair will deliver twice the power into twice the load.
i.e. two 100W into 4r0 amplifiers will deliver 200W into 8r0.
The before (100W+100W) and after (200W) are identical, no extra power has been created.
Adding on a transformer never changes that. No magic!
Yet you confirmed "correct" to my statement
The transformer does NOT create extra power.
Calculation:
A 100W into 4r0 capable amplifier must deliver 20Vac and 5Aac into that 4r0 test load.
A bridged pair of these 100W amplifiers can still deliver 20Vac and 5Aac and the new load will see 40Vac and pass 5Aac.
For the above to hold true the new load MUST be 8r0. i.e. 20+20Vac divided by 5Aac reveals the value of the test load.
the general rule that ALWAYS holds true for bridging of two amplifiers is:
The bridged pair will deliver twice the power into twice the load.
i.e. two 100W into 4r0 amplifiers will deliver 200W into 8r0.
The before (100W+100W) and after (200W) are identical, no extra power has been created.
Adding on a transformer never changes that. No magic!
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