I am expecting an X150 to be delivered Wed. or Thur.
The seller described it as being upgraded. When I asked how it was upgraded he said that the transistors have been replaced with currently used transistors. Would not other parts need to be replaced if this were the case? Current models are X150.5 and X150.8. It is my understanding that there is more than just different transistors used in these current models.
Would these currently used Transistors be compatible in the older circuit design?
Tom
The seller described it as being upgraded. When I asked how it was upgraded he said that the transistors have been replaced with currently used transistors. Would not other parts need to be replaced if this were the case? Current models are X150.5 and X150.8. It is my understanding that there is more than just different transistors used in these current models.
Would these currently used Transistors be compatible in the older circuit design?
Tom
Probably work better if you ask in the 'pass labs' forum.
You know, where Nelson Pass would see the question 🙂
You know, where Nelson Pass would see the question 🙂
Thank you for moving this here to the correct forum.
I will attempt to get some pic's once I receive the X150.
Tom
I will attempt to get some pic's once I receive the X150.
Tom
Who knows? I am not aware of any upgrades, particularly ones involving
replacement of output devices. The only changes historically have been
from TO-3 cases in old models to TO-247 cases currently used.
Newer models have changes to the topologies, but again, there is no
information on what might have been done to the unit.
You can always arrange for Pass Labs to look at the unit.
😎
Thank you for your reply.
I should get the amp Wed.
I am pretty excited. This is a big step up for me.
I will look inside and hopefully provide pics.
Have to get my daughter to take pics.
Tom
I should get the amp Wed.
I am pretty excited. This is a big step up for me.
I will look inside and hopefully provide pics.
Have to get my daughter to take pics.
Tom
Well, I've been listening to the X150 for a couple of days now and I must say it is certainly is a big step in the right direction from my Phase Linear 400 and B&K ST1400 Series II.
I am very pleased with the way this amp sounds powering my original Snell Type A speakers. I am using an Oppo 105D running through my Odyssey Candela preamp and everything seems to be happy playing together.
I no longer care if transistors have been swapped or not. I am happy with what I hear and that is pretty much all that matters.
I must say that being an entry level piece of Nelson Pass designed gear I am duly impressed. Maybe one day I will be able to afford another Pass creation.
Thank you Mr. Pass, for this amp is bringing me great pleasure.
Tom
I am very pleased with the way this amp sounds powering my original Snell Type A speakers. I am using an Oppo 105D running through my Odyssey Candela preamp and everything seems to be happy playing together.
I no longer care if transistors have been swapped or not. I am happy with what I hear and that is pretty much all that matters.
I must say that being an entry level piece of Nelson Pass designed gear I am duly impressed. Maybe one day I will be able to afford another Pass creation.
Thank you Mr. Pass, for this amp is bringing me great pleasure.
Tom
Seller keeps promising to email me description of so-called update but has yet to provide anything.
No pics, I am just enjoying the music.
I love it.
Tom
No pics, I am just enjoying the music.
I love it.
Tom
We demand pics. 😀
On a diy site the least you can do is pull the lid and take some good pics of the insides.
If their good enough we can discuss what has or hasn't been done to it...
And don't forget to unplug it first 🙂
On a diy site the least you can do is pull the lid and take some good pics of the insides.
If their good enough we can discuss what has or hasn't been done to it...
And don't forget to unplug it first 🙂
I sold mine to a guy and he can't turn it on. Blowing fuses. It (and the second one) did it at the house of the guy I bought it from. He eventually turned it on. They have auto 16 amp fuses, and mine is the old school disposable 16 amp where it worked. What to do?
It was working this morning in my house. Now he can't turn it on in Italy.
It worked great for 4 months in my house. He is blowing fuses on inrush current and he just got the bottom blue light on. No lights in his house
It worked great for 4 months in my house. He is blowing fuses on inrush current and he just got the bottom blue light on. No lights in his house
so , to recapitulate , because I'm confused:
- you bought two , one with "automatic fuse" (current limiter ) and second with old school melting fuse;
-you sold that one with automatic fuse , and even if it worked at your home , now it is not starting on - in Italy?
- you bought two , one with "automatic fuse" (current limiter ) and second with old school melting fuse;
-you sold that one with automatic fuse , and even if it worked at your home , now it is not starting on - in Italy?
The guy I bought FROM had 2. Both turned off the lights in his house but turned on eventually. I bought one. He had auto fuses in his home - the ones that reset with a switch. Mine worked well with ancient screw fuses. The guy who bought it from me can't turn it on.
well...... if it worked , and now is blowing 15A fuses repeatedly , nothing can be done remotely .... especially remotely^squared
it must go to bench, first PSU needs to be checked
Dodo cap or diode bridge is nothing unusual after few decades worth of powering on surges
it must go to bench, first PSU needs to be checked
Dodo cap or diode bridge is nothing unusual after few decades worth of powering on surges
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