Phase Linear 200II upgrade

IrishboyM4 · 9th November 2009, 02:14 AM

i have a old phase linear 200 series 2 amp and i want to upgrade it. i have already done upgraded the capacitors to 33,000uf and i want to upgrade the outputs to make it better able to drive 4 ohm loads and maybe 2 ohms and also ditch the protection circuit junk. what parts can i upgrade the outputs with. i have read around and i am unsure of whether the new ON-Semi parts will work. if anyone can tell me which parts will work. i understand the TO-3 case and such but I have been told that the ft is to high or something on the new parts?

Thanks much
Brendan

jleaman · 9th November 2009, 02:22 AM

Quote:

Originally Posted by IrishboyM4

i have a old phase linear 200 series 2 amp and i want to upgrade it. i have already done upgraded the capacitors to 33,000uf and i want to upgrade the outputs to make it better able to drive 4 ohm loads and maybe 2 ohms and also ditch the protection circuit junk. what parts can i upgrade the outputs with. i have read around and i am unsure of whether the new ON-Semi parts will work. if anyone can tell me which parts will work. i understand the TO-3 case and such but I have been told that the ft is to high or something on the new parts?

Thanks much
Brendan

Protection on a 200 ? are you sure about that?

IrishboyM4 · 9th November 2009, 02:35 AM

yeah im 100% sure on that. i have seen the parts myself. and the amp got shorted out once at a good power level and it goes into some weird protect mode where it just pops over and over. and the schematic i have shows it tohttp://byrne.isa-geek.com/200.pdf

jleaman · 9th November 2009, 02:52 AM

yeah i was thinking about the 400, sorry, i know the 400's don't have protection at all, and it can push a 2 & 4 ohm load with no problems.

Why not just go on ebay and buy a amplifier that can do it ? like a older carver or nad or adcom etc etc ?

What is this amp being used for ?

J'

llwhtt · 9th November 2009, 02:57 AM

400s and 700s both have almost the same VI limiters as the 200 schematic shown.

Craig

IrishboyM4 · 03:01 AM

The amp was going to be used for subwoofer duty. and i have the amp. it was just replaced with a adcom GFA-555 so i figure use it to run my subs that are currently being run by a 300w amp that i built that is just a mess and a bunch of wires. but to run it i need to bridge it into 4 ohms. now that i think about it that presents a 2 ohm load to each amp channel.... ohh and another reason to not buy another one. im a poor college student and it looks nice with the wood case...

Brendan

jleaman · 9th November 2009, 03:00 AM

to bad u didn't have the 400,

PHASE LINEAR 400 SERIES II

DAM it was a nice amp, loved the vu meters that moved at night time in my room was sooo cool, the vu meters had a single small line that moved instead of all the led's lighting up it was a single line, was VERY nice.!

OHHH the old days.

J'

radio · 08:23 AM

Pozdrav!
Pogledajte ovu semu GLADIJATOR-500W, i recite komentar!
Hvala!

Hello!
Check this scheme Gladiator-500W, and say a comment!
Thank you!

9th November 2009, 02:14 AM	#1
IrishboyM4 diyAudio Member Join Date: Apr 2007	Phase Linear 200II upgrade i have a old phase linear 200 series 2 amp and i want to upgrade it. i have already done upgraded the capacitors to 33,000uf and i want to upgrade the outputs to make it better able to drive 4 ohm loads and maybe 2 ohms and also ditch the protection circuit junk. what parts can i upgrade the outputs with. i have read around and i am unsure of whether the new ON-Semi parts will work. if anyone can tell me which parts will work. i understand the TO-3 case and such but I have been told that the ft is to high or something on the new parts? Thanks much Brendan __________________ Simplicity is elegance. DIY=Sticken It To The Man

9th November 2009, 02:35 AM	#3
IrishboyM4 diyAudio Member Join Date: Apr 2007	yeah im 100% sure on that. i have seen the parts myself. and the amp got shorted out once at a good power level and it goes into some weird protect mode where it just pops over and over. and the schematic i have shows it tohttp://byrne.isa-geek.com/200.pdf __________________ Simplicity is elegance. DIY=Sticken It To The Man

9th November 2009, 02:58 AM	#6
IrishboyM4 diyAudio Member Join Date: Apr 2007	The amp was going to be used for subwoofer duty. and i have the amp. it was just replaced with a adcom GFA-555 so i figure use it to run my subs that are currently being run by a 300w amp that i built that is just a mess and a bunch of wires. but to run it i need to bridge it into 4 ohms. now that i think about it that presents a 2 ohm load to each amp channel.... ohh and another reason to not buy another one. im a poor college student and it looks nice with the wood case... Brendan __________________ Simplicity is elegance. DIY=Sticken It To The Man Last edited by IrishboyM4; 9th November 2009 at 03:01 AM.

9th November 2009, 08:18 AM	#8
radio diyAudio Member Join Date: Oct 2009 Location: Bitola MACEDONIA	Hi-Fi Audio Amplifier "GLADIATOR-500"! Pozdrav! Pogledajte ovu semu GLADIJATOR-500W, i recite komentar! Hvala! Hello! Check this scheme Gladiator-500W, and say a comment! Thank you! Last edited by radio; 9th November 2009 at 08:23 AM. Reason: Picture 1

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9th November 2009, 02:52 AM	#4
jleaman Banned Join Date: Apr 2002	yeah i was thinking about the 400, sorry, i know the 400's don't have protection at all, and it can push a 2 & 4 ohm load with no problems. Why not just go on ebay and buy a amplifier that can do it ? like a older carver or nad or adcom etc etc ? What is this amp being used for ? J'

9th November 2009, 02:57 AM	#5
llwhtt diyAudio Member Join Date: Jun 2008	400s and 700s both have almost the same VI limiters as the 200 schematic shown. Craig

9th November 2009, 03:00 AM	#7
jleaman Banned Join Date: Apr 2002	to bad u didn't have the 400, PHASE LINEAR 400 SERIES II DAM it was a nice amp, loved the vu meters that moved at night time in my room was sooo cool, the vu meters had a single small line that moved instead of all the led's lighting up it was a single line, was VERY nice.! OHHH the old days. J'

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