question on Brown Note lite IIb and Luckey Dual Lite
Posted: Tue 05/18/21 2:22 pm
Hello all,
I've recently returned to guitar/amp life after many years working too hard on the career treadmill. For a few years I've been building and wiring my own guitars and pedals and just finished a little solid state amplifier. I've modded an old Vox ac15cc1 so that it's now pretty close to sounding like a real Vox. I've learned enough safety to avoid starting fires or electrocuting myself and continue to upgrade my electronics knowledge. I'm now looking at building my first tube amp and am in the reading phase. So based on my questions below you may warn me away from the whole project but I thought I'd take the risk of embarrassing myself.
1. I've gotten a layout for the Brown Note Lite IIb (http://rh-tech.org/public/18-Watt/18W_L ... L_v1.1.jpg), but it does not list the value of the can capacitor. I can't find the exact schematic for the amp, but the Lite IIb schematics I can find list it as 33uf/33uf. The closest can cap I can find (commonly used in 18 watt builds) is a 32uf/32uf. Advice?
2. I'm also very intrigued by Steve Luckey's 18 watt Vox/Marshall Dual Lite (http://sluckeyamps.com/dual_lite/dual_lite.pdf). It seems he used an old Hammond AO23279 power transformer with a 630 volt center tap and an AO23281 output transformer with only a 4 ohm output, according to the schematics. I am having difficulty finding a closely compatible power transformer and would prefer an output transformer that serves 8 ohms. But I have not yet learned enough to know the risks of not sticking exactly to the specs and there is no contact info on his website. Advice?
Thanks in advance.
I've recently returned to guitar/amp life after many years working too hard on the career treadmill. For a few years I've been building and wiring my own guitars and pedals and just finished a little solid state amplifier. I've modded an old Vox ac15cc1 so that it's now pretty close to sounding like a real Vox. I've learned enough safety to avoid starting fires or electrocuting myself and continue to upgrade my electronics knowledge. I'm now looking at building my first tube amp and am in the reading phase. So based on my questions below you may warn me away from the whole project but I thought I'd take the risk of embarrassing myself.
1. I've gotten a layout for the Brown Note Lite IIb (http://rh-tech.org/public/18-Watt/18W_L ... L_v1.1.jpg), but it does not list the value of the can capacitor. I can't find the exact schematic for the amp, but the Lite IIb schematics I can find list it as 33uf/33uf. The closest can cap I can find (commonly used in 18 watt builds) is a 32uf/32uf. Advice?
2. I'm also very intrigued by Steve Luckey's 18 watt Vox/Marshall Dual Lite (http://sluckeyamps.com/dual_lite/dual_lite.pdf). It seems he used an old Hammond AO23279 power transformer with a 630 volt center tap and an AO23281 output transformer with only a 4 ohm output, according to the schematics. I am having difficulty finding a closely compatible power transformer and would prefer an output transformer that serves 8 ohms. But I have not yet learned enough to know the risks of not sticking exactly to the specs and there is no contact info on his website. Advice?
Thanks in advance.