Gibson EH-125
Moderators: pompeiisneaks, Colossal
Re: Gibson EH-125
Wow, I'm shocked to see the voltages on the 6SJ7, Va=39 Vg2=16. I had no idea you could run a tube at such low voltages and get that kind of tone. When I built the GA-20 circuit, it was muddy. I did a few things to raise the plate above 100v and that helped a great deal. In this case, the tone is just outrageously grand. Really, really nice job.
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- Posts: 1314
- Joined: Tue May 22, 2007 12:57 pm
- Location: Dumble City, Europe
Re: Gibson EH-125
Great clean sound -what guitar?ic-racer wrote:Overdriven sounds EH125:
https://youtu.be/b4xgKfXheEU
Clean sounds EH125:
https://youtu.be/IaYIE8olw28
Diva or not? - Respect for Mr. D's work....)
Re: Gibson EH-125
The clean sounds were done with a 1993 Telecaster . When I started playing guitar that would have been like having a 1956 Telecaster.
"You feel like you're floating on a football field filled with marshmallows." -Dumble
Re: Gibson EH-125
Not shown yet on the schematic is the fact that the only grounding input jack is the one for "Microphone," which is the one attached to the volume control.
So, if the guitar is plugged in there, the other two jacks are 'open' and can pick up noise.
Rather than alter the amp, I just made a shorting 1/4" Phone plug and plug that in one of the "Instrument" jacks.
So, if the guitar is plugged in there, the other two jacks are 'open' and can pick up noise.
Rather than alter the amp, I just made a shorting 1/4" Phone plug and plug that in one of the "Instrument" jacks.
"You feel like you're floating on a football field filled with marshmallows." -Dumble
Re: Gibson EH-125
Just finished the guitar that goes with this amp.
[img768]http://img.photobucket.com/albums/v670/ ... nished.jpg[/img]
[img768]http://img.photobucket.com/albums/v670/ ... nished.jpg[/img]
"You feel like you're floating on a football field filled with marshmallows." -Dumble
Re: Gibson EH-125
Oh my. I need a cold shower.
Re: Gibson EH-125
This is a clip of both the guitar and amp together.
https://youtu.be/f4tcIQXNC2E
https://youtu.be/f4tcIQXNC2E
"You feel like you're floating on a football field filled with marshmallows." -Dumble
Re: Gibson EH-125
Very nice, you are a true artist with your work as well.ic-racer wrote:This is a clip of both the guitar and amp together.
https://youtu.be/f4tcIQXNC2E
TM
Re: Gibson EH-125
Nine years leater and the amp needed some work.
The cardboard in side the field coil deteriorated. That, in combination with rust on the metal cylinder, caused the original voice coil to tear apart.
I did try to fix it again, but the busted voice coil, combined with that very old paper cone were at the point of being un-repairable.
The cardboard in side the field coil deteriorated. That, in combination with rust on the metal cylinder, caused the original voice coil to tear apart.
I did try to fix it again, but the busted voice coil, combined with that very old paper cone were at the point of being un-repairable.
You do not have the required permissions to view the files attached to this post.
"You feel like you're floating on a football field filled with marshmallows." -Dumble
Re: Gibson EH-125
I tried to clean out the deteriorating cardboard residue from inside the field coil. I then tried to seal it with lacquer.
You do not have the required permissions to view the files attached to this post.
"You feel like you're floating on a football field filled with marshmallows." -Dumble
Re: Gibson EH-125
In the end I wound up removing the output transformer (which was attached to the basket of the field coil speaker) and I had already removed the field coil.
I attached both the field coil and the output transformer to a ceramic speaker and bid farewell to the original speaker.
I attached both the field coil and the output transformer to a ceramic speaker and bid farewell to the original speaker.
You do not have the required permissions to view the files attached to this post.
"You feel like you're floating on a football field filled with marshmallows." -Dumble
Re: Gibson EH-125
Lastly, the volume pot had deteriorated, so I replaced that with a new one.
You do not have the required permissions to view the files attached to this post.
"You feel like you're floating on a football field filled with marshmallows." -Dumble
Re: Gibson EH-125
The EH-125 with its new ceramic speaker:
https://youtu.be/rZTx0H3G__Q?si=PjC2lhf01mffD3gS
https://youtu.be/Wf43dfgDsEM?si=OSQ2xuIcT3MxtigA
https://youtu.be/rZTx0H3G__Q?si=PjC2lhf01mffD3gS
https://youtu.be/Wf43dfgDsEM?si=OSQ2xuIcT3MxtigA
"You feel like you're floating on a football field filled with marshmallows." -Dumble