Bogren Digital's latest impulse response collection documents what may be the most unconventional speaker cabinet ever built. The Mahler 2x12, constructed entirely from solid granite and weighing 300 pounds, eliminates the tonal coloration typically introduced by wooden enclosures. This rigid architecture allows the speaker drivers themselves to become the dominant voice, stripping away the acoustic characteristics that lighter cabinets impose on the source signal.
Jakob Herrmann captured these 39 impulse responses at his Stockholm facility using a professional recording chain built around an SSL 6000G console. The engineering pedigree here matters: Herrmann's work with Anthrax, In Flames, and Machine Head reflects a track record in capturing articulate, controlled guitar tones across heavy music genres. His approach to microphone placement and EQ philosophy carries through to these IRs, resulting in responses that sit distinctly in a mix without excessive brittleness or boxiness.
The sonic character leans toward definition and speaker driver character rather than cabinet resonance. This makes the pack particularly suited for direct recording workflows, amp modeling, or situations where you need tonal clarity within dense arrangements. The uncolored presentation also makes these IRs effective as a starting point for further processing, rather than as finished tones requiring minimal adjustment.
For engineers accustomed to working with high-end hardware captures, this collection represents a curiosity worth exploring. The granite construction is more conceptual provocation than practical advantage, yet the results demonstrate how enclosure mass genuinely affects driver response. Compatible with all standard IR loaders, these responses offer an alternative perspective on speaker cabinet character.
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