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Old 10th March 2012, 07:52 PM   #31
ianc13 is offline ianc13  United Kingdom
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Hi Djnubz,

There would be an amount of rework to make a current source amp work correctly with a voltage source designed crossover.

Parallel crossover elements in a voltage source arrangement become series in a current source arrangement and vice versa.

You should read NP's article on current source amps at Current Source Amps
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Old 10th March 2012, 09:31 PM   #32
JZatopa is offline JZatopa  United States
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Ianc13 thanks for the link. I have paged through it and a few other articles by Mr. Pass on the subject. It was more of a, I know it's not supposed to work but has anyone tried it any way, question.
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Old 15th March 2012, 12:44 AM   #33
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Hi djnubz,

I think the essence of it is the performance will be quite varied and unpredictable. So no matter what one says, you can't generalise for the rest. The issue here lies with the impedance curve for the speaker which will roughly translate to the 'frequency' response. So the peaks of the curve will become peaks in the frequency response. That is why it works better for simple single drivers. At least one can predict the impedance and hence compensate for it..

Oon

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Old 12th September 2013, 11:49 AM   #34
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Alright. I finally got around to finish it. I must say the sound is gorgeous. The way it fills up the room with somuch emotion...

Picture included. Yup those two black things are my 490uf output caps.. polyproplene....

I stack my claim as the person who has used the biggest caps there is in his F amp...

Oon
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Old 12th September 2013, 11:53 AM   #35
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Old 12th September 2013, 01:16 PM   #36
zany is offline zany  Australia
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great work oon, did you need any compensation network to get the F2j to play nicely with your speakers?
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Old 13th September 2013, 03:25 PM   #37
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Didn't use any however I used a bit of graphic equalizer in my software to reduce the shout. Might be good to add in a zobel network...

Oon
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Old 14th September 2013, 03:45 AM   #38
zany is offline zany  Australia
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thanks for the reply.
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