I've been looking at the brownnote.net d'lite schematics and comparing it to the non-hrm files here. I don't see a lot of difference except that they use a few different values in the cathode/plate positions.
Can anyone comment on what makes a d'lite vs a regular non-hrm?
Thanks
Rut
non-hrm question
Moderators: pompeiisneaks, Colossal
Re: non-hrm question
The D-Lite was inspired by a number of amps built here. The values used just happen to work.
Re: non-hrm question
The D'Lite IS a non-HRM (Hybrid-A) with a few minor tweaks. Most of the differences are related to the initial Fender platform. The Hybrid-A takes advantage of Bassman or Twin iron while the D'Lite foundation is Vibrolux iron.
V1 cathode bypass caps are 10uF because I liked the cleans better, but this change is not uncommon in other people's builds. (Even the mighty Dogears has tried a 10uF in V1b.) The dropping string uses a 1K in the first position because the PT has lower voltage output. Resistor in place of choke is also a fairly common Hybrid-A mod. The NFB circuit is slightly different to bring out better harmonics from the smaller output transformer.
By the time people have completed tweaking their D'Lites, most of the switching options have been reincorporated so the differences are even smaller. More importantly, no matter which platform you begin with, it always takes a lot of experimentation before you find the voice that speaks to you.
I think I'm going to rename the amp from "ODS" to "OCD"
V1 cathode bypass caps are 10uF because I liked the cleans better, but this change is not uncommon in other people's builds. (Even the mighty Dogears has tried a 10uF in V1b.) The dropping string uses a 1K in the first position because the PT has lower voltage output. Resistor in place of choke is also a fairly common Hybrid-A mod. The NFB circuit is slightly different to bring out better harmonics from the smaller output transformer.
By the time people have completed tweaking their D'Lites, most of the switching options have been reincorporated so the differences are even smaller. More importantly, no matter which platform you begin with, it always takes a lot of experimentation before you find the voice that speaks to you.
I think I'm going to rename the amp from "ODS" to "OCD"