TONE3000

Marshall JCM900 4100 (LiveSPICE2NAM)

Amp Head Capture

NAM

83ennui's avatar

83ennui

3h

Description

Marshall JCM900 4100 Dual Reverb. This is THE JCM900 model that I remember liking. Very different topology from its predecessor - with the preamp section being predominantly solid state-based with op-amps for the gain stages, while the preamp tubes are for the EQ and Presence controls. ・Two channels:  。Channel A is the crunch channel, by technicality. It's more on edge of breakup territory, and you can't really get cleans out of this channel without using your guitar volume knob because of the LED pairs that are connected to the gain pot.  。Channel B is the lead channel. Worth noting that it has its own pre-EQ tonestack of some sort in the middle of the gain stages. ・Preamp and poweramp sections are also provided separately. [LEGEND] ・FULL - Preamp + poweramp ・PRE - Preamp section ・PWR - Poweramp section ・ChA - Channel A ・ChB - Channel B [NOTES] ・All the models are captured with 8x oversampling and 64 iterations for the highest quality possible. ・All controls are flat so you can hear the amp as it is with neutral settings. I may add additional captures with "ideal" settings, but that's not a priority for now.. ・Should you wish to push more gain into the captures, use a separate gain utility/plugin and a clipper/waveshaper/limiter with a ceiling of -0.1dB or less before your NAM loader to prevent nuking the models if the input signal gets too hot. === LiveSPICE: https://livespice.org/ Original LiveSPICE .schx schematic file: https://github.com/MARKTHERENCE/LiveSPICE-MK-Circuits === There has been some interest for me to have an option for people who'd like to donate for my work, so here's my PayPal link *only* if you feel generous: https://paypal.me/83ennui Making these captures take a lot of time, from researching the schematic diagrams (whether original or reproduced with certain degrees of verification), to cross-referencing from various gear presentations and demos, and several passes of training the captures to determine the adjustments needed with the LiveSPICE models/components for the most accurate/ideal simulation possible.

Preview

Model
IR
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Models

Each model captures the gear at specific knob settings.

A2-FullESR: 0

A2-LiteESR: 0.0002

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

A2-FullESR: 0.0009

A2-LiteESR: 0.005

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

A2-FullESR: 0.0001

A2-LiteESR: 0.0003

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

A2-FullESR: 0.0015

A2-LiteESR: 0.0085

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

A2-FullESR: 0

A2-LiteESR: 0

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

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License: T3K

Users may download and use the data file in software and publish the resulting outputs without royalties or restrictions. However, they may not upload, republish, or distribute the data file without the author's permission.

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