2SD555 + 2SB600 data help!! - Page 3 - diyAudio
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Old 6th November 2005, 05:19 PM   #21
anatech is offline anatech  Canada
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Hi Hugh & Christer,
Correct you both are, I feel I am missing the other small bits of information. Also, there are many web pages I have found in German I can't read. I'll have to ask my daughter to translate for me.

I love the wealth of information on the web. Some of it just out of reach!

-Chris
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Old 6th November 2005, 05:20 PM   #22
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Here's another one, worst investment i made in the late 1980s.
A lot of the data in it is untrue, i prefer datasheets.
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Old 6th November 2005, 05:28 PM   #23
anatech is offline anatech  Canada
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Hi Jacco,
Wow, it is wrong! I wonder how many people it has mislead?

-Chris
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Old 18th November 2005, 06:18 PM   #24
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Thought some of you might enjoy this link :

http://homepage3.nifty.com/ebina2540/data/data_tr.html
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Old 18th March 2008, 01:31 PM   #25
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For completeness :
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File Type: pdf 2sb600-2sd555.pdf (46.3 KB, 137 views)
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Old 22nd November 2009, 10:17 PM   #26
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Default ECG87/ECG88 subs.. maybe fyi

Hope this can help someone searching
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File Type: pdf ECG87_ECG88Data.pdf (133.8 KB, 43 views)
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Old 23rd November 2009, 10:02 PM   #27
anatech is offline anatech  Canada
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Anyone using ECG or NTE subs deserve a smoking pile of used-to-be-amp. That's probably what is going to happen anyway using that trash.

In case anyone is searching, use real part numbers!! At least you'll know exactly what you have and what the characteristics are.

Most multi-output amplifiers should have matched pairs (triads, quads - whatever). You are not going to get this using re-marked transistors. Make no mistake, ECG or NTE buy parts, remove the original numbers and then apply their own mark. Many times you are actually getting different parts, even though the bag / box may have the same number on it. With all the counterfeit parts on the market, how would you ever find out if the NTE (or old ECG) supply chain has been compromised? I'm going to bet they were using counterfeit parts long before anyone else was infected. It's a perfect setup! Sell them fakes, they remove your fake stamp and apply their own (rougher) markings. Since ECG and NTE are selling re-marked parts to begin with, how is it possible to trace anything back??

It isn't.

What a setup.

-Chris
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Last edited by anatech; 23rd November 2009 at 10:03 PM. Reason: spelling
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Old 14th January 2011, 12:24 PM   #28
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The Nakamichi 620 power Amp used them in the output section.
Could 2SD555 and 2SB600 be substituted directly by 2SA1216 and 2SC2922?
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Old 20th May 2011, 02:25 AM   #29
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Does anyone know if 2SB600 and 2SD555 are the same as MJ15011 and MJ15012?
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Old 18th December 2011, 08:54 PM   #30
Ayid is offline Ayid  Canada
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guilia67. (Yes, an old but interesting thread....)

No, not exactly. jacco's reference to the Japanese data indicates that the 2SD555 has an ft of 15MHZ. I don't know of any MJ150** series that comes close to this. Most I see are around 4MHZ.
I have repaired some old vintage receivers but tend to find semi ON units that are close or better with regards to voltage, current and the highest ft in that grouping. It's rarely the same. A "golden ear" may hear the difference.
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