• Created : April 25, 2020
  • Updated : April 25, 2020

Terms and conditions

Before proceeding with download, please consult the terms of use, and more specifically the “impulse response” section : https://overdriven.fr/overdriven/index.php/fr/about/.

These impulse response files (IRs) are free and as mentioned in the Terms of Use, no warranty of any kind is provided with these files (issues, sound problems, inability to use them, sound quality, damages of any kind…).

The riffs and partial song covers presented here as samples are used for illustration and educational purposes (using amps and IRs). These riffs and songs remain the property of their copyright owners.

Cab and Mics

The cab used is a Mesa Boogie® Recto 1*12 loaded with its original Celestion® Vintage 30. This cab is a small 1*12 but it has a very interesting tonal balance. While it is a little bit trebly like many small cabs, its clarity is very interesting when paired with fat amps (Mesa) and / or when using downtuned guitars (D, C, B, A). It stills has a good low-end and a very interesting middle range. To get the best out of them :

  • boost 360 Hz by 2 to 4 dB
  • boost 800 Hz by 3 to 4 dB
  • use a low-cut to get lots of definition and clarity with downtuned guitars or with passive pickups that have a strong low end

This collection is part of the 6L6 Serie II collections : it is using only a 6L6 power amp section together with a tube preamp. 49 IRs files are provided in this version.

  • Free Impulse Responses of a Mesa Boogie Recto 112 cab loaded with Celestion® Vintage 30
  • Sennheiser E906
  • Shure SM58
  • Heil PR20
  • Audio Technica AT2020
  • T.Bone MB85B

For once, the PR20 and AT2020 are among my personal favorites, especially the PR20 at positions 09, 10 and 12.

Recorded in home studio conditions, with a 6L6 power section only and with a tube microphone preamp.


A few samples to get an idea of the tone.


LPF 16 kHz, HPF 119 Hz – SH5 – D tuning – OD9 – EOD88 – Torpedo Reload – Nadir – EQ 360 Hz +2 db, 800 Hz + 2 dB

PR20 (10_30)

LPF 16 KHz – SH5 – D tuning – OD9 – EOD88 – Torpedo Reload – Nadir – EQ 360 Hz +2 db, 800 Hz + 2 dB

PR20 (10_35)

No LPF, HPF 99 Hz, Drop A# Tuning, Nazgul, Mercuriall Reaxis, Two-Notes WOS, 800 Hz + 1 dB

IR Files

IRs are provided in 44,1 KHZ format, each mic in a subfolder. 49 IR files in this version.

Version 1.0 :

  • AT2020
    • OD-R112-V30-AT2020-P05-30.wav
    • OD-R112-V30-AT2020-P09-30.wav
    • OD-R112-V30-AT2020-P10-30.wav
    • OD-R112-V30-AT2020-P12-30.wav
    • OD-R112-V30-AT2020-P15-30.wav
    • OD-R112-V30-AT2020-P20-30.wav
  • E906
    • OD-R112-V30-E906-P00-20.wav
    • OD-R112-V30-E906-P05-20.wav
    • OD-R112-V30-E906-P09-20.wav
    • OD-R112-V30-E906-P10-20.wav
    • OD-R112-V30-E906-P12-20.wav
    • OD-R112-V30-E906-P15-20.wav
    • OD-R112-V30-E906-P20-20.wav
  • MB85B
    • OD-R112-V30-MB85B-P05-10.wav
    • OD-R112-V30-MB85B-P09-10.wav
    • OD-R112-V30-MB85B-P10-10.wav
    • OD-R112-V30-MB85B-P12-10.wav
    • OD-R112-V30-MB85B-P15-10.wav
    • OD-R112-V30-MB85B-P20-10.wav
  • PR20
    • OD-R112-V30-PR20-P05-10.wav
    • OD-R112-V30-PR20-P05-25.wav
    • OD-R112-V30-PR20-P05-35.wav
    • OD-R112-V30-PR20-P09-10.wav
    • OD-R112-V30-PR20-P09-25.wav
    • OD-R112-V30-PR20-P09-35.wav
    • OD-R112-V30-PR20-P10-10.wav
    • OD-R112-V30-PR20-P10-25.wav
    • OD-R112-V30-PR20-P10-35.wav
    • OD-R112-V30-PR20-P12-10.wav
    • OD-R112-V30-PR20-P12-25.wav
    • OD-R112-V30-PR20-P12-35.wav
    • OD-R112-V30-PR20-P15-10.wav
    • OD-R112-V30-PR20-P15-25.wav
    • OD-R112-V30-PR20-P15-35.wav
    • OD-R112-V30-PR20-P20-10.wav
    • OD-R112-V30-PR20-P20-25.wav
    • OD-R112-V30-PR20-P20-35.wav
  • SM58
    • OD-R112-V30-SM58-P05-20.wav
    • OD-R112-V30-SM58-P05-40.wav
    • OD-R112-V30-SM58-P09-20.wav
    • OD-R112-V30-SM58-P09-40.wav
    • OD-R112-V30-SM58-P10-20.wav
    • OD-R112-V30-SM58-P10-40.wav
    • OD-R112-V30-SM58-P12-20.wav
    • OD-R112-V30-SM58-P12-40.wav
    • OD-R112-V30-SM58-P15-20.wav
    • OD-R112-V30-SM58-P15-40.wav
    • OD-R112-V30-SM58-P20-20.wav
    • OD-R112-V30-SM58-P20-40.wav

A few notes

  • The proximity effect was fully used, without an aggressive low-cut at recording time : while the low-end is not enormous for this 1*12 , it is well present, so you can still use a low cut (50-120 HZ).
  • These IRs have a lot of treble, but they do not sound overly harsh : I found myself using a low-pass as high as 16 Khz to preserve the treble register. Lots of bite.
  • The 6L6 power amp used for IR capture tend to scoop a little bit the 250-700/800 HZ area : if you raise it by 1 to 2 DB, you may get closer to the actual sound of this speaker (ie under WOS 360 HZ + 1 or 2 DB, 800 HZ +1 or 2 DB)
  • the IRs are recorded with a tube preamp
  • cap edge and related positions (p09 – 10 – 12) present the most balanced tone for me. P15-20 have a tunnel/mud effect : they may be interesting in some mixing conditions, but I dont’t use them when practicing with the guitar alone.


Overdriven.fr is not affiliated with the brands mentioned on this page. These products and brand names are listed here to describe the hardware used for impulse capture.

Download link

You can download the files from : https://overdriven.fr/overdriven/index.php/download/6l6-serieii-calif-recto-112-v30-44k-v1-0-zip/