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Old 14th October 2005, 10:07 PM   #1
Antonix is offline Antonix  Italy
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Default substitutes for 2SC3519

Hello community.

I have thinking to change the old 2SC3519/2SA1386 of my Carver because I owe to drive a difficult speaker at 4ohm and i want to have more current.

I want to leave the 2sc4381/2sa1667 drivers for the moment.

What do you think about ?
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Old 14th October 2005, 10:14 PM   #2
anatech is offline anatech  Canada
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Hi Antonix,
1. Carver amps will drive a 4 R load normally.
2. What is the model number of your amp?

-Chris
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Old 14th October 2005, 10:30 PM   #3
Antonix is offline Antonix  Italy
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The model is TFM 15 and have 4 bjt / channel.

The devices were several year old and I want to change with more performant devices.

My speaker are 4 way self-made Hi-End and I have necessity to drive with little more current.
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Old 14th October 2005, 10:44 PM   #4
anatech is offline anatech  Canada
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Your original parts are rated for 15A, 130W with an fT of 50MHz.

You can try the latest ON Semi parts, small gain. And remember, a 4 R load is a 4R load. I guess you mean to "crank it". You still have a heatsink sized for the original temperature rise, and the thermal in the power transfomer may go first anyhow. This amp is no toy but it's not a Krell either.

-Chris
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Old 14th October 2005, 10:54 PM   #5
Antonix is offline Antonix  Italy
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I look for MJL21...
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Old 14th October 2005, 10:57 PM   #6
anatech is offline anatech  Canada
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Those are what I was thinking of. You will need to drill new holes higher up as those are a bit longer. Tap them 3 X 4 mm to do a nice job.

-Chris
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