LYNX Amplifier question

B.I.G · 7th March 2004, 05:36 PM

Hello can anyone tel me if the LYNX Amplifier will work with darlingtons on the output ? Should i ommit Q110/Q111 ?

I have BDX66c/67C rated 120v 16A 150W .

Can i reach 150W/8ohm with 2 pairs at +/-60v ?

B.I.G · 7th March 2004, 08:22 PM

PS: the amp can be found here http://www.audio-circuit.dk/PDF/Sche...LYNX_v2-1E.pdf

JensRasmussen · 8th March 2004, 08:56 AM

Hi,

First of all, I have told Jan that there is a question regardig the lynx amp out here on diy.

The transistors you want to use are rated for 120 Vce, this means that voltages above this will cause the transistor to fail, or in worst case breake down.

If you want to run the amp at +-60V I suggest you use transistors rated at no less than 200V 15A. These could be the 3281/1302 pair or their newer substitutes 1943/5200

Hope this helps you

\Jens

Jan Dupont · 8th March 2004, 11:00 AM

I've got your email, and have tried several times to email you, however my reply keeps bouncing back with "Mail Error Handler".

B.I.G · 8th March 2004, 02:45 PM

from where i`m form you can`t fiind good bipolars only fakes so it is very hard for me to go for a 200V rated device . I have seen MJ15003/4 amps going on +/-68V that`s 136V they are 140V . With my transformer +/-60V no load i can get about +/-58V .....

soo ... there is a good chance it will work safe .... hope so. ...

B.I.G · 8th March 2004, 03:08 PM

Okay so i have only found ON MJ15022 rated at 200V , 250W

MY question is can i use only the MJ15022 NPN of course you would have to tell me what mods to do !!

How much will this affect the sound quality of the amplifier ?

Jan Dupont · 8th March 2004, 04:14 PM

The MJ15022 are just fine!
I don't think you will hear any difference at all using these substitutes... I can't hear it

B.I.G · 8th March 2004, 07:17 PM

I didn`t express my self corectly !

I only found the NPN MJ15022 !! I couldn`t fiind the PNP MJ15023

I hope this amp can work with NPN only

Jan Dupont · 8th March 2004, 07:53 PM

No way!!!!
You can find a few amps using only NPN's, but not this one

B.I.G · 9th March 2004, 09:28 PM

It won`t work at all or it will just sound badly ?

7th March 2004, 05:36 PM	#1
B.I.G diyAudio Member Join Date: Mar 2004 Location: Home	LYNX Amplifier question Hello can anyone tel me if the LYNX Amplifier will work with darlingtons on the output ? Should i ommit Q110/Q111 ? I have BDX66c/67C rated 120v 16A 150W . Can i reach 150W/8ohm with 2 pairs at +/-60v ? __________________ B.I.G

7th March 2004, 08:22 PM	#2
B.I.G diyAudio Member Join Date: Mar 2004 Location: Home	PS: the amp can be found here http://www.audio-circuit.dk/PDF/Sche...LYNX_v2-1E.pdf __________________ B.I.G

8th March 2004, 08:56 AM	#3
JensRasmussen diyAudio Member Join Date: Jul 2002 Location: Denmark - Jutland	Lynx Hi, First of all, I have told Jan that there is a question regardig the lynx amp out here on diy. The transistors you want to use are rated for 120 Vce, this means that voltages above this will cause the transistor to fail, or in worst case breake down. If you want to run the amp at +-60V I suggest you use transistors rated at no less than 200V 15A. These could be the 3281/1302 pair or their newer substitutes 1943/5200 Hope this helps you \Jens

8th March 2004, 11:00 AM	#4
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	B.I.G I've got your email, and have tried several times to email you, however my reply keeps bouncing back with "Mail Error Handler". __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

8th March 2004, 02:45 PM	#5
B.I.G diyAudio Member Join Date: Mar 2004 Location: Home	from where i`m form you can`t fiind good bipolars only fakes so it is very hard for me to go for a 200V rated device . I have seen MJ15003/4 amps going on +/-68V that`s 136V they are 140V . With my transformer +/-60V no load i can get about +/-58V ..... soo ... there is a good chance it will work safe .... hope so. ... __________________ B.I.G


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8th March 2004, 03:08 PM	#6
B.I.G diyAudio Member Join Date: Mar 2004 Location: Home	Okay so i have only found ON MJ15022 rated at 200V , 250W MY question is can i use only the MJ15022 NPN of course you would have to tell me what mods to do !! How much will this affect the sound quality of the amplifier ? __________________ B.I.G

8th March 2004, 04:14 PM	#7
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	The MJ15022 are just fine! I don't think you will hear any difference at all using these substitutes... I can't hear it __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

8th March 2004, 07:17 PM	#8
B.I.G diyAudio Member Join Date: Mar 2004 Location: Home	I didn`t express my self corectly ! I only found the NPN MJ15022 !! I couldn`t fiind the PNP MJ15023 I hope this amp can work with NPN only __________________ B.I.G

8th March 2004, 07:53 PM	#9
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	No way!!!! You can find a few amps using only NPN's, but not this one __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

9th March 2004, 09:28 PM	#10
B.I.G diyAudio Member Join Date: Mar 2004 Location: Home	It won`t work at all or it will just sound badly ? __________________ B.I.G

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