plitron

tenderland · 10th August 2005, 11:22 AM

Hello after completing a 2a3 using hammond 1627 OPT . iwas concidering building mono block version using a plitron OPT .would this be worth the added expense, i have no objective experience with this OPT

Jeff

kmtang · 10th August 2005, 01:54 PM

I have got the Plitron 3.5K SE OPT for my 300B amp. I noticed that it has much wider high frequency response than the Hammond's 1627SE OPT.

You can buy the Plitron directly from them. I believe its quality is really worth.

Johnny

amperex · 11th August 2005, 01:28 PM

Plitron will litterly blow any Hammond out of the water sonically.

agent.5 · 11th August 2005, 06:37 PM

I have a pair of 2.5K Plitron donuts for 300B. I like the shape of donut.

kmtang · 12th August 2005, 05:21 AM

Hi Agent.5,

Just wonder what Power Transformer you are using in your 300B amp. I am using the Toroid.COM's power transformer for it's reasonable price.

Johnny

agent.5 · 12th August 2005, 05:25 AM

Quote:

Originally posted by kmtang
Hi Agent.5,

Just wonder what Power Transformer you are using in your 300B amp. I am using the Toroid.COM's power transformer for it's reasonable price.

Johnny

vintage UTC.

kmtang · 12th August 2005, 01:34 PM

Hi Agent 5,

Recently I experiment various config for the power supply of my 300B MonoBloc a bit. Now I am having 5U4G-100uF (BG)-10H choke-100uF (BG) CLC PI filter.

I noticed that with higher value of the input capacitor, the sound gets a lot better with flesh and blood especially for the vocal. I understand that 100uF input capacitor is an overkill for the 5U4G. I told my friend that this is a destructive experiment and see how long could the 5U4G last in such condition.

Johnny

agent.5 · 12th August 2005, 04:23 PM

Quote:

Originally posted by kmtang
Hi Agent 5,

Recently I experiment various config for the power supply of my 300B MonoBloc a bit. Now I am having 5U4G-100uF (BG)-10H choke-100uF (BG) CLC PI filter.

I noticed that with higher value of the input capacitor, the sound gets a lot better with flesh and blood especially for the vocal. I understand that 100uF input capacitor is an overkill for the 5U4G. I told my friend that this is a destructive experiment and see how long could the 5U4G last in such condition.

Johnny

I think you are right. I use a 2uf cap after the rectifier tubes.

amperex · 13th August 2005, 09:20 PM

I like unloading the primary impedance. Most manufactures specs are based upon maximum power at 5% IMD or worst. I prefer 5K with a 300B in the 325 to 350 plate volt range. What a watt or two?

kmtang · 15th August 2005, 01:20 PM

I have tried to use 5K OPT with 2A3 and it didn't sound good at all. I would suggest to use 2.5K OPT for 300B.

Johnny

10th August 2005, 11:22 AM	#1
tenderland diyAudio Member Join Date: Jul 2004 Location: us	plitron Hello after completing a 2a3 using hammond 1627 OPT . iwas concidering building mono block version using a plitron OPT .would this be worth the added expense, i have no objective experience with this OPT Jeff __________________ "If every one is making wheels , why make wheels ? " Steve Jobs

12th August 2005, 01:34 PM	#7
kmtang diyAudio Member Join Date: Nov 2004 Location: Vancouver	Large input capacitor in PS Hi Agent 5, Recently I experiment various config for the power supply of my 300B MonoBloc a bit. Now I am having 5U4G-100uF (BG)-10H choke-100uF (BG) CLC PI filter. I noticed that with higher value of the input capacitor, the sound gets a lot better with flesh and blood especially for the vocal. I understand that 100uF input capacitor is an overkill for the 5U4G. I told my friend that this is a destructive experiment and see how long could the 5U4G last in such condition. Johnny

13th August 2005, 09:20 PM	#9
amperex diyAudio Member Join Date: Feb 2005 Location: MI	Careful on xfmr impedance I like unloading the primary impedance. Most manufactures specs are based upon maximum power at 5% IMD or worst. I prefer 5K with a 300B in the 325 to 350 plate volt range. What a watt or two?

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10th August 2005, 01:54 PM	#2
kmtang diyAudio Member Join Date: Nov 2004 Location: Vancouver	I have got the Plitron 3.5K SE OPT for my 300B amp. I noticed that it has much wider high frequency response than the Hammond's 1627SE OPT. You can buy the Plitron directly from them. I believe its quality is really worth. Johnny

11th August 2005, 01:28 PM	#3
amperex diyAudio Member Join Date: Feb 2005 Location: MI	Plitron will litterly blow any Hammond out of the water sonically.

11th August 2005, 06:37 PM	#4
agent.5 diyAudio Member Join Date: Aug 2003 Location: San Francisco, CA	I have a pair of 2.5K Plitron donuts for 300B. I like the shape of donut.

12th August 2005, 05:21 AM	#5
kmtang diyAudio Member Join Date: Nov 2004 Location: Vancouver	Hi Agent.5, Just wonder what Power Transformer you are using in your 300B amp. I am using the Toroid.COM's power transformer for it's reasonable price. Johnny

15th August 2005, 01:20 PM	#10
kmtang diyAudio Member Join Date: Nov 2004 Location: Vancouver	I have tried to use 5K OPT with 2A3 and it didn't sound good at all. I would suggest to use 2.5K OPT for 300B. Johnny

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