The speaker measures 135 mm in overall depht.
Maybe I made my cabinet a tad to small. Even though I followed the famous scott cole plans ?
Not much of a woodworker though😉 So maybe it´s not deep enough.
Saw a 5e3 carrying a greennback once, and that is a deep speaker.
Maybe I made my cabinet a tad to small. Even though I followed the famous scott cole plans ?
Not much of a woodworker though😉 So maybe it´s not deep enough.
Saw a 5e3 carrying a greennback once, and that is a deep speaker.
if the output winding is grounded in the manner shown in the drawing, you should be able to lift it if you want. the grounded winding simplifies wiring. isolating the output winding might be a good idea if you have a "live" chassis, but really shouldn't be an issue if you have a chassis that's properly grounded through a 3-wire power cord.
Not sure what issue you´re referring to? This has become a long thread😉
The powercord is a two-wire one. The only way to go where I live. I guess it´s a bit weird, but there are only two holes in a wall outlet in my house.
The powercord is a two-wire one. The only way to go where I live. I guess it´s a bit weird, but there are only two holes in a wall outlet in my house.
Still happy with the amp. I´ve changed the speaker. Swapped it out with a celestion 75 watts speaker, untill I i get the money and decide what to buy?
Still wondering what it would sound like with voltages closer to the original. The 290bex puts out a b+ that is too high. Can I lower the voltage at the transformer centertap, using a couple of 5w zeners (10 v each) Or do I have to buy an expensive transformer?
Still wondering what it would sound like with voltages closer to the original. The 290bex puts out a b+ that is too high. Can I lower the voltage at the transformer centertap, using a couple of 5w zeners (10 v each) Or do I have to buy an expensive transformer?
I was never fond of the old zener trick though it is indeed a low cost fix.
There might be a better solution.
Install a VVR control.
It is only a handful of parts, you can get the info on the web and it is indeed very effective.
If you have a common fender style chassis, I have seen a lot of guys mount the pot in the ground switch or standby switch location.
This would allow you to dial the voltage to any level between the 365+ volts where you are now and down to about 45V.(I forget the bottom limit)
Bunch of info here
VVR
There is also a PCB kit available from Hall
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