Nucleus Reference 3.1 Loudspeaker

Reference Home Stereo Speakers for Everyone

The all-new Anthony Gallo Nucleus® Reference 3.1 loudspeaker is an improvement on a true classic. Featuring enhanced mid-range drivers, upgraded capacitors and the elimination of the tweeter switch, the Reference 3.1 brings our flagship stereo speakers to even further heights. From its unique, forward-thinking design to its patented 300° dispersion tweeter, every element of the Reference 3.1 practically screams "enthusiast." And best of all, it all comes at a price that won't break the bank.

Anthony Gallo Acoustics has shattered the price/performance ratio once again with the all-new Nucleus® Reference 3.1 loudspeaker. Reference 3.1 speakers feature several significant changes that take the performance of the award-winning Reference 3 loudspeaker to a whole new level.

The stereo performance-enhancing features of the Reference 3.1 include:

Improved Mid-Range Drivers:
Our Reference 3.1 stereo speakers feature improved mid-range drivers which incorporate a neodymium magnet and genius design for improved efficiency, mid-range detail and transient response.

Upgraded Power Capacitors:
The Reference 3.1’s all-new metallized polypropylene capacitors offer greater dynamics and lower current.

Tweeter Switch Eliminated:
The tweeter switch has been eliminated to ensure even greater signal coherency and high-frequency purity.

The Anthony Gallo Acoustics Nucleus® Reference 3.1 speakers are a true high-end home stereo speaker. Designed with the performance- and decor-conscious audiophile in mind, the Reference 3.1 will add a timeless look to your living room and let you hear what you've been missing in all of your favorite movies and music recordings. Thanks to the Reference 3.1 speaker system's unparalleled transparency and neutrality, your favorite musical and cinematic moments come to life exactly the way they were intended to be heard.

Among the many special features that make our Reference 3.1 stereo speakers so unique is an upgraded version of our patented CDT™ tweeter, the CDT II™, as well as a hollow-cast, aluminum chassis filled with Gallo’s patented S2 technology air-density treatment. The CDT II™ and the S2 Technology are two crucial proprietary elements that meld to form an award-winning combination of stereo clarity, precision and range not found anywhere near this price point for a speaker system.

The Reference 3.1's CDTII™ tweeter is so transparent, fast and dynamic that it offers 300° horizontal dispersion, making the Reference 3.1 a versatile, powerful option for just about any room in the house. Meanwhile, the patented S2 technology actually de-couples the backwave of the driver from the air inside the enclosure. The benefits of S2 in home stereo speakers include superior low-frequency extension, improved transient response and a substantial increase in efficiency.

Our Reference 3.1 stereo speakers are uniquely equipped to demonstrate the advantages of the leading high-resolution formats: DVD audio and SACD. Very few high-end home stereo speakers, including the majority of models costing $10,000 or more, can approach, much less equal, the Reference 3.1 speaker system's extended high-frequency response, and even fewer offer \ its near omni-directional dispersion. For the ultimate in neutrality and transparency, the Reference 3.1 operates without a crossover across most of its bandwidth - from 125Hz to 35kHz.

An in-depth three-year development process was required to complete the design of these revolutionary home stereo speakers, with much of this time being invested in critical listening tests conducted by Anthony Gallo and his team of critical beta testers. True to its roots, this innovative new reference speaker system builds on the design philosophies of our original — now legendary — reference products: the Nucleus Solo and the Nucleus Reference.

The high-powered Reference 3.1 speaker is designed with style for audiophiles seeking maximum performance from their home theater speakers.

Reference 3.1 speakers are equally comfortable in either stereo or home theater configurations. The Reference 3 S.A. (subwoofer amplifier) is our 2 x 240 watt stereo amplifier which incorporates an active crossover/bass EQ option to extend the Nucleus Reference 3.1's bass response to a room-shaking 22Hz by driving the woofers' second voice coil directly. The combination of the Reference 3.1 stereo speaker and the S.A. subwoofer amplifier takes this home stereo system's unparalleled sound yet another step further, maximizing full-range performance with true stereo subwoofer bass extension from a small, unobtrusive package.

Gold-plated, all-metal binding posts ensure secure speaker wire connections, and the full-height removable grille cage with welded steel support members lends a more traditional appearance. In addition, each of your Reference 3.1 speakers undergo extensive computer quality control testing.

FINISHES: Black on Black or Black on Stainless with Black base (Cherry or Natural Maple bases available as optional upgrade)

WARRANTY: One year parts and labor. 5 years if product is registered within 60 days of purchase.


Frequency Response: 34Hz - 35kHz +/- 3dB
Frequency Response
(active bass):
22Hz - 35kHz +/- 3dB
Impedance top terminal : 4 - 8 ohms
Impedance lower terminal: 4 ohms
Sensitivity: 88 dB/1 watt/1 meter
Power Handling: 350 watts RMS
Driver: Dual 4" carbon fiber midrange drivers
Custom 10" dual voice coil bass driver
CDT Tweeter: 300° dispersion 3kHz - 35kHz
Midrange Driver Material: Hyperbolic carbon fiber
Dimensions: 36.25" (H) x 8" (W) x 14" (D) with grill
35.5" (H) x 8" (W) x 14" (D) w/out grill
Add 2 to 2.25" for spikes and spike protectors
Weight: 47 lbs each
Connections: Gold plated brass binding posts for secure wire connection
Enclosure: Aluminum/Stainless Steel
Finishes: Black on black or black on stainless with black base (Cherry or Natural Maple bases available as optional upgrade)
Warranty: 1 year parts and labor (expanded to 5 years if product is registered within 60 days of purchase)

Product Manual