Not in my experience. There should be hundreds of places in the US to buy tubes from at all prices. Or go for the russian equivalents but even they have gone up in price.
I think I still have some E88CC NOS Philips new in original boxes. When you are interested let me know and we can work out a deal.
Correct. You must have grounded something else you shouldn't have.
Its not toroidal is it? If you pass a bolt through the middle of a toroid and ground both ends of the bolt it will sizzle!
I used the Morgan jones optimized schematic.
My plan is to just connect the power supply board to the new transformer with only those grounds connected to start. Then traces the grounds one by one and connect the tubes one by one.
Picking up a fuse today or tomorrow. 500 mA fast blow 250 V. I hope that is a good size.
My plan is to just connect the power supply board to the new transformer with only those grounds connected to start. Then traces the grounds one by one and connect the tubes one by one.
Picking up a fuse today or tomorrow. 500 mA fast blow 250 V. I hope that is a good size.
I am perplexed now. I am using the following power supply. http://headwize.com/images4/cmoy5_1e.gif
When I have just the 6.3 v side hooked up I gets about 6.8v and my tubes light up. That seems pretty good. I check the voltage on my transformer for the 250v wires, red and red, and get about 270v. Then I connect the red red to the power supply to rectify and I keep blowing my 250v 500 mA fast blow fuse. I do not have the 250v leg of the ps hooked up to the amp at all. I am not sure why it keeps blowing.
When I have just the 6.3 v side hooked up I gets about 6.8v and my tubes light up. That seems pretty good. I check the voltage on my transformer for the 250v wires, red and red, and get about 270v. Then I connect the red red to the power supply to rectify and I keep blowing my 250v 500 mA fast blow fuse. I do not have the 250v leg of the ps hooked up to the amp at all. I am not sure why it keeps blowing.
mdenacart, it is a big power supply , big capacitors too and diodes rect. this is going to blow a 500 mA fast blow fuse easily.
btw Stixx is spot on the critic of the type of amp. I add: smooth sound, no excitement. My setup was : akm - resistor - cathode follower buffer - headphones. My next setup is same with differential opamps, buffer opamp.
btw Stixx is spot on the critic of the type of amp. I add: smooth sound, no excitement. My setup was : akm - resistor - cathode follower buffer - headphones. My next setup is same with differential opamps, buffer opamp.
My guess is that most of the verdicts on the sound of this amp will be verdicts of the output caps. Anyone tried with big MKP or bypassing HQ lytics?
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I did. I didn't have room for big MKP's, but I bypassed the 470uF 'lytics with some nice MKP.
A good transformer coupled amp still sounds better to me but is also in a very different league money-wise...
PS. On the topic of output caps... my other OTL amp used Siemens MKV caps... those need quite long to burn in but then are really good.
A good transformer coupled amp still sounds better to me but is also in a very different league money-wise...
PS. On the topic of output caps... my other OTL amp used Siemens MKV caps... those need quite long to burn in but then are really good.