California Duo


Released on December 02, 2016.



California Duo Overview
212 3QTR
Jon Symons
"Frail Hope"
212 3QTR
Jon Symons
"Trip Motion"
412 TRAD
Jon Symons
"Mark My Words"
(+ tutorial)
412 TRAD
Jon Symons
412 TRAD
Jon Symons
Jon Symons
Sound Like Metallica


"212 3QTR" based on a Mesa Boogie Three quarter semi open back 2x12 cabinet.

  • "BLU" based on 1963 Celestion T530 "Blue Alnico" speakers.
  • "C90" based on Celestion G12-80 "MC-90" speakers.
  • "LYN" based on Celestion G12-50GL "Lynchback" speakers.
  • "V30" based on Celestion Vintage 30 speakers.


"412 TRAD" based on a Mesa Boogie Rectifier Traditional Straight 4x12 cabinet.

  • "H30" based on pre-Rola Celestion G12H-30 speakers.
  • "M25" based on pre-Rola Celestion G12M-25 speakers.
  • "V60" based on 60 watt Celestion Vintage 30 speakers.
  • "V70" based on 70 watt Celestion Vintage 30 speakers.



"57" based on a modern production Shure SM57 dynamic mic.
"70" based on a Microtech Gefell UMT70S condenser mic.
"121" based on a Royer R121 ribbon mic.
"160" based on a Beyerdynamic M160 ribbon mic.
"414" based on an AKG C414B-ULS condenser mic.
"421" based on a vintage Telefunken MD421 dynamic mic.
"MID" based on a mid field placed AEA R92 ribbon mic.
"REAR" based on a vintage Neumann KM84 condenser mic.
"ROOM" based on a vintage Neumann KM84 condenser mic.


Power Amplification
• neutral tube amp

• Prism Orpheus

Microphone Amplification
• BAE 1073mp

• Vovox Sonorus



Please read this section carefully!
Wave Audio (.wav)
Wave audio format IR's (.wav) are compatible with convolution reverb type loaders in recording software and outboard hardware units and are provided in:
  • 24 bit resolution
  • 44.1, 48, 88.2, and 96 kHz sample rates
  • mono channel count
  • minimum phase transformed ("Mpt") and non-minimum phase transformed
  • 200 and 500 ms decay tail lengths
For added convenience, .wav files appropriate for conversion or submission to the following platforms have been separated out and designated within the library structure:
  • Atomic Amplifire
  • Fractal Audio Systems hardware/software
  • Kemper Profiling Amp
  • Line 6 Helix
  • Two Notes hardware

If your platform cannot load .wav files, make sure you explore the free or commercial conversion applications available elsewhere for your device. As per Section 9. Terms of Sale of the Terms of Use Agreement, there are NO REFUNDS ON DIGITAL GOODS, which includes this library.



Main Folder:

Cab Blends:

Single Cabs:


Folder Structure:
Single Cab Speakers

Mics Per Speaker

Mixes Per Speaker

Speaker Quick Start

Total Amount of Unique Files: 7640 IR's

See the TUTORIALS section for simple quick-use tips and a tone chart!


Included File 01:

Included File 02:

Included File 03:

Included File 04:

Included File 05:

Included File 06:

Included File 07:

Included File 08:

Included File 09:

Included File 10:

Included File 11:

Included File 12:

Included File 13:

Included File 14:

Included File 15:

Copyright © OwnHammer, LLC. All rights reserved.

Terms of Use   |   Privacy Policy

Third Party Reference Disclaimer:

Any and all third party companies and products listed or otherwise mentioned on this site may be trademarks of their respective owners and are in no way affiliated or associated with OwnHammer, LLC. Product names are referenced solely for the purpose of identifying the hardware used in the equipment chain for impulse response capture or are examples of companion products. Use of these names does not imply any cooperation or endorsement.