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Loudspeakers / USA

GR-Research

GR-Research develops speaker kits, proprietary drivers and crossover components in Texas. It also offers loudspeaker design and upgrade services for independent builders.

Design & approach

GR-Research supplies speaker kits, proprietary drivers, crossover parts and upgrade packages, and also offers design services. This makes it relevant to venues whose cabinets are assembled or finished locally. The acoustic design and the physical cabinet build can have different authors, so those contributions are kept separate in our installation credits.

Maker background & design sources ↗

Equipment index

Products in the rooms

Browse all GR-Research equipment

Venue equipment records, including their original model uncertainties. Shared-system entries retain the full recorded context.

From the maker’s world.

Products, process and directly attributed installations.

GR-Research on Instagram

Photos and video published by @grresearch.

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Product video / Donnie Mulligan

GR Research X-CS Encore Speaker Build part 2

A directly attributed product, design or installation film. The original publisher is credited below.

Hear it in the rooms.

Equipment, commissions and collaborations.

Cali / Colombia

Bonsai HiFi ↗

Equipment in use

Bonsai HiFi lists GR-Research in its loudspeakers setup. The equipment details below reflect the venue record.

  • Main speakers: X-CS Encore · sealed enclosure; two M-165 woofers; nominal 8 Ω; rated 90 dB sensitivity

Inside the system

Two Technics 1200-series decks feed an ARS MODEL9900 rotary mixer. The main speakers are sealed GR-Research X-CS Encores, each using two M-165 woofers around a central tweeter. The design is rated at 90 dB sensitivity with a nominal 8 Ω impedance. A Sansui BA-2000 provides amplification, with Threshold 400A and S/150 amplifiers also in the collection and rotation. One KEF KC62 and two KC92 subwoofers support the sealed mains, while miniDSP processing addresses troublesome room frequencies. A kick-sub position sits behind the bar, although its model assignment is unspecified. With several bass sources in a compact room, their placement, level and timing are central to integration with the main speakers.

Read the system story ↗

Further reading