Rel G1-MkII


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Gibraltar G-1 transforms the definition of deep bass for the home. Whether used singly in multiples, we know of no finer ambient space and deep bass reproducer. G-1 combines shocking speed and clarity with formidable power handling and depth. G-1 combines a cabinet of remarkable complexity, with a power amplifier capable of sufficient current production to develop even the lowest, sustained passages whether in ultra high-end home theater or the finest audiophile music system. And it all starts with the fastest filter circuits ever fitted to a home subwoofer. The bass note is then shaped and toned through truly environmentally friendly recycled blue jean material used as damping, and explodes outward through an ultra light, stiff carbon fibre 12 bass engine unique to G-1.

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The massively beautiful, finned, alloy heatsink is necessary when dissipating the sorts of power necessary for prodigious deep bass for hours on end. Capable of outputting a conservative 600W (120V) on occasion, the dedicated REL Class A/B amplifier used in G-1 is a true dreadnaught. Powerful, fast and capable of tremendous current delivery, it is the finest amplifier ever designed by our engineers.

Filter Circuit

Power is of little use unless properly directed. The filter circuit used in G-1 is the fastest we know of in existence. Measured at just 4 milliseconds of group delay, this design features a 2nd order Bessel function crossover that begins as low as 20 Hz, necessary because G-1 can extend lower than that in many rooms. Additionally, we employ a secondary filter set at approximately 220Hz to roll off any remnants of midrange that might otherwise be audible.

Dolby .1 Input

Finally, G-1 possesses a dedicated Dolby .1 LFE input with its own 4th order crossover set at the Dolby mandated 120Hz and we outfit this circuit with its own separate volume control allowing G-1 to simultaneously reproduce the deepest bass for main speakers as well as home theater signals, all without having to invest in separate subs for each purpose. Additionally, G-1 provides independent volume for High level as well as .1 for perfect flexibility.


The 12” bass engine fitted to every G-1 features ultra light, stiff carbon fibre—the same stuff used to craft racecar chassis – as weight goes down, speed goes up. power production is handled by a  large 4-layer Kapton voice coil capable of dissipating 700 watts, while the superior travel of the long-throw high energy suspension produces awe inspiring volume levels in your home.


Whilst the outer form garners all the praise — Its 1-¼”curvilinear surfaces slathered in no fewer than 13 coats of hand polished lacquer has a way of inspiring attention—it is the inner construction that produces the dynamics for which G-1 is revered. The marine grade laminated hardwoods employed in the musical instrument-grade internal bracing require two days of production time to complete a single unit. Each cabinet requires three weeks to handcraft. The resulting structure is far more than a beautiful form, it is the barrel from which G-1’s awesomely deep bass fires.

Type Closed box, front firing woofer

Drive Unit 12 in., 300mm long throw, carbon fiber cone

Lower Frequency Response in Room -6dB at 15Hz

Input Connectors High-Level Neutrik Speakon, Low-Level stereo phono, LFE phono, LFE XLR

Output Connectors High-Level Neutrik Speakon, LFE phono, LFE XLR

Gain Control Range 80 dB

Power Output 600 WATTS (RMS) Ultra High-Current Power Supply

Phase Switch Yes, 0 or 180 degrees

Amplifier Type Class AB

Fully Electronic with SET-SAFE Yes

DC Fault Yes

Output Short Yes

Mains Input Voltage 220-240 volts, 110-120 volts for certain markets

Mains Fuse 5 Amp semi delay 230 volts operation. 10 Amp semi delay 115 volts operation

Dimensions (WHD), Including Feet 22.5 x 18.2 x 26.8 in., (571.5 x 462 x 680.3 mm)

Net Weight 108 lbs. (49 kg)

Mains Lead Yes

Neutrik Speakon Interconnect Yes (10 Meters Nominal)

Users Manual Yes,Remote Control Yes

batteries (AAA x 2) Yes

Spikes (x 4) Yes

Allen Key (2.5mm) Yes