HRM/non HRM what dose this stand for & whts the differen
Moderators: pompeiisneaks, Colossal
HRM/non HRM what dose this stand for & whts the differen
Just wondering what this stands for and what the sonic difference is.
-
Darkbluemurder
- Posts: 584
- Joined: Tue Jan 03, 2006 7:28 pm
Re: HRM/non HRM what dose this stand for & whts the differen
HRM = Hot Rubber Monkey or Hot Rodded Marshall. It refers to a second tone stack in the overdrive section. So the HRM architecture is
V1 - tone stack - clean volume (or input gain) - V2 - OD input trim - V3 - OD gain - V4 - OD level
This to me gives a clean crunch tone at lower gain settings and can scream at higher gain settings. Most people here use the preamp boost switch (PAB) which disables the tone stack in the clean channel. Then the sound goes towards a Marshall sound but is smoother.
Non-HRM means that there is no second tone stack, otherwise the architecture is the same, however, the circuit values are different. See the different schems in the files section. Non-HRM amps have way more midrange.
Good luck
Stephan
V1 - tone stack - clean volume (or input gain) - V2 - OD input trim - V3 - OD gain - V4 - OD level
This to me gives a clean crunch tone at lower gain settings and can scream at higher gain settings. Most people here use the preamp boost switch (PAB) which disables the tone stack in the clean channel. Then the sound goes towards a Marshall sound but is smoother.
Non-HRM means that there is no second tone stack, otherwise the architecture is the same, however, the circuit values are different. See the different schems in the files section. Non-HRM amps have way more midrange.
Good luck
Stephan