You know, i looked again for that amp and couldnt find it again. I hope that there isnt any info I am missing.
Can I build this amp straight from your schematic? How forgiving are tube circuits? Do I need that isolation transformer or can I just use a fuse?
How about tube rectification, will it make a huge difference in this design? I have some really huge electrolytic power supply caps. Can I use them, or should I stick to the values that you have used? I want to run 24 ohm speakers instead of eight ohm. Will I have to make any design changes? The compression drivers I will use are rated at 115bd/watt. Should this amp be Ok for them for above 500hz?
I am thinking about making this amp out of copper sheet soldered together. Then maybe heartwood side panels! I will also use pop cans to disguise the crappy old looking OPTs! When I get back to school with a soldering iron I may be able to whip something up.
Can I build this amp straight from your schematic? How forgiving are tube circuits? Do I need that isolation transformer or can I just use a fuse?
How about tube rectification, will it make a huge difference in this design? I have some really huge electrolytic power supply caps. Can I use them, or should I stick to the values that you have used? I want to run 24 ohm speakers instead of eight ohm. Will I have to make any design changes? The compression drivers I will use are rated at 115bd/watt. Should this amp be Ok for them for above 500hz?
I am thinking about making this amp out of copper sheet soldered together. Then maybe heartwood side panels! I will also use pop cans to disguise the crappy old looking OPTs! When I get back to school with a soldering iron I may be able to whip something up.
I am looking at your schematic:
http://homepage.mac.com/tlinespeakers/TLS/tubes/images/SE_50EH5_map.gif
And I am going to build straight off of this. Have you made any changes to it during your tweaking phase or may I build straight from it?
Thanks
Thaddeus
http://homepage.mac.com/tlinespeakers/TLS/tubes/images/SE_50EH5_map.gif
And I am going to build straight off of this. Have you made any changes to it during your tweaking phase or may I build straight from it?
Thanks
Thaddeus
tade said:
As noted in the article i moved the filaments to before the trafo (a bigger trafo or use 2 would be better) and when i do it again, i'll make the 1st cap after the rectifier small and move the big one to after the R.
dave
re: trafo slang when xfmr is what you really mean
Ah, so you're the other infidel on this list. 😉
planet10 said:
Ah, so you're the other infidel on this list. 😉
Re: re: trafo slang when xfmr is what you really mean
I just couldn't squeeze anthor trafo on that chassis....
dave
rcavictim said:
I just couldn't squeeze anthor trafo on that chassis....
dave
Re: Re: re: trafo slang when xfmr is what you really mean
Well you see, that's why an xfmr is better, especially for tight fits, 80% the size of a trafo.
No need for anyone to have a fit, especially a tight one. 😀
planet10 said:
Well you see, that's why an xfmr is better, especially for tight fits, 80% the size of a trafo.
No need for anyone to have a fit, especially a tight one. 😀
The transformer functions as a current limiter?
so lets say i build this thing. Then it is a matter of listening and testing voltages? And If a voltage is wrong I try different resistor values?
Thanks
so lets say i build this thing. Then it is a matter of listening and testing voltages? And If a voltage is wrong I try different resistor values?
Thanks
tade said:
it doesn't have a ground (connected to the chassis). That is how i wired the heaters -- like an incandescent lamp.
dave
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