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Old 10th August 2010, 10:18 AM   #2131
Melon Head is offline Melon Head  Australia
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Nelson has never done a quasi complememntary output stage (to my knowledge), maybe these new jfets might entice him to try
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Old 10th August 2010, 12:33 PM   #2132
flg is offline flg  United States
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I like the line level crossover idea. That is what I'm most in need of Maybe a center ch sub below 150Hz, and a mid to high at about 3kHz
Maybe built on the B series? And maybe a lightspeed deal on the output ?
Was there ever really a "High Low Pass"?
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Old 10th August 2010, 01:34 PM   #2133
Tea-Bag is offline Tea-Bag  United States
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Quote:
Originally Posted by thanh1973 View Post
There are just so many possibilities.

Maybe an amp using those new semisouth depletion mode Power Jfets SJDP120R085
http://www.semisouth.com/products/up...085_rev1.0.pdf
I thought this was going to be the Nemesis, with an output transformer, but have not seen anymore about it.

I also vote for diy jfet crossover, but plans look right now for real B5, which would go against the commerce division.

I've been thinking a lot about digital lately, so maybe some new digital output stage mods would be my vote.
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Old 10th August 2010, 01:36 PM   #2134
vdi_nenna is offline vdi_nenna  United States
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How about an amp with no transitors at all... The sound of nothing clapping.
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Old 10th August 2010, 01:51 PM   #2135
jacco vermeulen is offline jacco vermeulen  Netherlands
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Fine by me, just hold the grits.
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Old 10th August 2010, 02:07 PM   #2136
jameshillj is offline jameshillj  Australia
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The concept design of a higher powered F3 (F6?) would be most helpful, and the B2 also.
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Old 10th August 2010, 02:45 PM   #2137
Tea-Bag is offline Tea-Bag  United States
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Originally Posted by jameshillj View Post
The concept design of a higher powered F3 (F6?) would be most helpful, and the B2 also.
The SJDP120R085 is a depletion JFET like the LU1014, and more available, and can take more voltage and current.
I've had a few people ask me about retrofitting them into an Z9, F3 type clone. Of course I am not knowing the best method here. I think removing the cascode mosfet would be in in order.
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Old 10th August 2010, 03:34 PM   #2138
vdi_nenna is offline vdi_nenna  United States
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A higher power version of F5, and maybe balanced too.

A simple, balanced Jfet preamp.
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Old 10th August 2010, 04:11 PM   #2139
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Quote:
Originally Posted by vdi_nenna View Post
How about an amp with no transitors at all... The sound of nothing clapping.
Yeah! We'll call it the clap...
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Old 10th August 2010, 04:32 PM   #2140
vdi_nenna is offline vdi_nenna  United States
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Yeah! We'll call it the clap...
That might be catchy...

"Avoid the clap, Jimmy Dugan"
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