substitutes for 2SC3519

Antonix · 14th October 2005, 10:07 PM

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 ?

anatech · 14th October 2005, 10:14 PM

Hi Antonix,
1. Carver amps will drive a 4 R load normally.
2. What is the model number of your amp?

-Chris

Antonix · 14th October 2005, 10:30 PM

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.

anatech · 14th October 2005, 10:44 PM

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

Antonix · 14th October 2005, 10:54 PM

I look for MJL21...

anatech · 14th October 2005, 10:57 PM

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

14th October 2005, 10:07 PM	#1
Antonix diyAudio Member Join Date: Apr 2005 Location: BA	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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14th October 2005, 10:14 PM	#2
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi Antonix, 1. Carver amps will drive a 4 R load normally. 2. What is the model number of your amp? -Chris

14th October 2005, 10:30 PM	#3
Antonix diyAudio Member Join Date: Apr 2005 Location: BA	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.

14th October 2005, 10:44 PM	#4
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	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

14th October 2005, 10:54 PM	#5
Antonix diyAudio Member Join Date: Apr 2005 Location: BA	I look for MJL21...

14th October 2005, 10:57 PM	#6
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	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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