Presentation + Class A amp with NEC 2SD555 / 2SB600

sataury · 9th February 2004, 09:54 PM

Hello,

Before my questions, a brief presentation of myself.
I'm french so please forgive me for my bad english. I have the chance to work in the pro audio domain, developping digital audio toys.

I started last year to build my hifi system. The first step was the loudspeakers : TQWT baffle with high efficiency 16 ohms 35 years old supravox (97 dB/W) and Beyma tweeter (101dB/W ! ).
I would like to build now good amplifiers for biamplifing them.
I could have chosen to build a tube amp with a 300B like most people would do for such loudspeakers, but It's too expensive for me at that time. So my thinking is to build class A amps, like Hiraga "The monster 8W" or JLH 10W.
I've got some 2SD555 / 2SB600 and I think they could be perfect for this type of project.
Unfortunately I don't have sufficient informations about these transistors to be able to do some simulations and choices before beginning the tests.

Does someone have the datasheets of the NEC 2SD555/2SB600 ?

What do you think about my choice ?

Best regards

trigon · 9th February 2004, 10:22 PM

Try this

http://www.ne.jp/asahi/evo/amp/B600D555f/report.htm

Trigon

sataury · 9th February 2004, 10:32 PM

Thank you trigon,

I already found this japanese site. I have definitively difficulties with japanese and automatic translation systems.

However, his project seems very interesting but a little complicated for a first try at my opinion. By now I don't want to bother with a mix of FET and transistors.

A also contacted the author about the datasheets but no answers for months at that time

Have a nice day.

sataury · 9th February 2004, 10:42 PM

Thank you trigon,

I already found this japanese site. I have definitively difficulties with japanese and automatic translation systems.

However, his project seems very interesting but a little complicated for a first try at my opinion. By now I don't want to bother with a mix of FET and transistors.

A also contacted the author about the datasheets but no answers for months at that time

Have a nice day.

fscarpa58 · 10th February 2004, 11:43 AM

Hi Sataury

Sumo 9 plus (J.Bongiorno's design)
uses 10+10 NEC 2SD555

It is not a difficult task since it also makes use
of op-amps. It uses floating supplies.

Bye

Federico

9th February 2004, 09:54 PM	#1
sataury diyAudio Member Join Date: Feb 2004 Location: Britany	Presentation + Class A amp with NEC 2SD555 / 2SB600 Hello, Before my questions, a brief presentation of myself. I'm french so please forgive me for my bad english. I have the chance to work in the pro audio domain, developping digital audio toys. I started last year to build my hifi system. The first step was the loudspeakers : TQWT baffle with high efficiency 16 ohms 35 years old supravox (97 dB/W) and Beyma tweeter (101dB/W ! ). I would like to build now good amplifiers for biamplifing them. I could have chosen to build a tube amp with a 300B like most people would do for such loudspeakers, but It's too expensive for me at that time. So my thinking is to build class A amps, like Hiraga "The monster 8W" or JLH 10W. I've got some 2SD555 / 2SB600 and I think they could be perfect for this type of project. Unfortunately I don't have sufficient informations about these transistors to be able to do some simulations and choices before beginning the tests. Does someone have the datasheets of the NEC 2SD555/2SB600 ? What do you think about my choice ? Best regards

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
2SD555 + 2SB600 data help!!	RetroAudio	Parts	40	23rd December 2011 11:00 AM
2sd555 question	ljk11	Solid State	0	17th March 2009 12:12 PM
WTB: 2 or 3pcs each NEC 2SD555/2SB600	ungie	Swap Meet	1	25th November 2008 04:23 PM
Mr. Linkwitz' presentation (AES)	gainphile	Multi-Way	8	8th May 2008 11:29 PM
Presentation	Bernt	Introductions	6	7th February 2004 06:49 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

9th February 2004, 10:22 PM	#2
trigon diyAudio Member Join Date: May 2002 Location: Canada	Try this http://www.ne.jp/asahi/evo/amp/B600D555f/report.htm Trigon

9th February 2004, 10:32 PM	#3
sataury diyAudio Member Join Date: Feb 2004 Location: Britany	Thank you trigon, I already found this japanese site. I have definitively difficulties with japanese and automatic translation systems. However, his project seems very interesting but a little complicated for a first try at my opinion. By now I don't want to bother with a mix of FET and transistors. A also contacted the author about the datasheets but no answers for months at that time Have a nice day.

9th February 2004, 10:42 PM	#4
sataury diyAudio Member Join Date: Feb 2004 Location: Britany	Thank you trigon, I already found this japanese site. I have definitively difficulties with japanese and automatic translation systems. However, his project seems very interesting but a little complicated for a first try at my opinion. By now I don't want to bother with a mix of FET and transistors. A also contacted the author about the datasheets but no answers for months at that time Have a nice day.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)