2SB645,2SD665 substitutes

squarehdca · 24th August 2004, 09:23 PM

I am rebuilding a Marantz 2330B receiver that has the original toshiba output transistors , I am collecting parts presently ;considering 1 channel has shorted outputs. I could source the original type , but am concerned about getting fakes. Is the MJ 15024 or MJ15016 a decent sub? Having trouble finding details on the originals.
Thanks

lubbie · 25th August 2004, 04:42 AM

If you can get your hand on some MJ 21195/96's you won't go wrong. I've used them in numerous amps and have nothing but praises for these new beauties.. They are just fantasic audio transistors.

pozo1992 · 25th August 2004, 06:45 AM

Hello gents,

I only can confirm that the MJ 21195/21196 are perfect substitutes for your originals. I have used MJ21193/21194 which have slightly lower SOA in several Sony and Technics Amps successfully.
Due to my information the originals do have a wider bandwith but it seems to be more forgiving to use slower substitutes than faster ones.

lubbie · 25th August 2004, 07:39 AM

If you cant get the MJ21195/96 get some MJ15024/25 which are easily available everywhere and are used lots in amp output stages.. They may have a low bandwith but are more then acceptable...

squarehdca · 25th August 2004, 07:17 PM

Thanks for the input , will proceed with your recommendations.

24th August 2004, 09:23 PM	#1
squarehdca diyAudio Member Join Date: Mar 2004 Location: southern ont	2SB645,2SD665 substitutes I am rebuilding a Marantz 2330B receiver that has the original toshiba output transistors , I am collecting parts presently ;considering 1 channel has shorted outputs. I could source the original type , but am concerned about getting fakes. Is the MJ 15024 or MJ15016 a decent sub? Having trouble finding details on the originals. Thanks

25th August 2004, 04:42 AM	#2
lubbie diyAudio Member Join Date: Mar 2003 Location: Dawson Creek, British Columbia	If you can get your hand on some MJ 21195/96's you won't go wrong. I've used them in numerous amps and have nothing but praises for these new beauties.. They are just fantasic audio transistors. __________________ Ralph Electronics Tech.

25th August 2004, 07:39 AM	#4
lubbie diyAudio Member Join Date: Mar 2003 Location: Dawson Creek, British Columbia	If you cant get the MJ21195/96 get some MJ15024/25 which are easily available everywhere and are used lots in amp output stages.. They may have a low bandwith but are more then acceptable... __________________ Ralph Electronics Tech.

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25th August 2004, 06:45 AM	#3
pozo1992 diyAudio Member Join Date: Jun 2004 Location: Bavaria	Hello gents, I only can confirm that the MJ 21195/21196 are perfect substitutes for your originals. I have used MJ21193/21194 which have slightly lower SOA in several Sony and Technics Amps successfully. Due to my information the originals do have a wider bandwith but it seems to be more forgiving to use slower substitutes than faster ones.

25th August 2004, 07:17 PM	#5
squarehdca diyAudio Member Join Date: Mar 2004 Location: southern ont	Thanks for the input , will proceed with your recommendations.

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