Monitor Audio - Platinum 300 3G Floor-Standing Speakers (Pair)
Full Details
These Gorgeous Floor-Standing Speakers Will Help You Want More of Every Kind of Music You Love: Monitor Audio Platinum 300 3G Feature Incredible Frequency Response, Deliver Tonal Neutrality and Immersive Soundstages
Glance at the Monitor Audio Platinum 300 3G floor-standing speakers in any one of the three available colors and you’ll most likely come to the following conclusions. They look absolutely spectacular. They feature innovative technologies that contribute to wowing levels of accuracy, detail, and dynamics. They are built by a company that knows a thing or two about high-end sonics. They don’t come cheap. They have fancy outrigger foot assemblies because they’re so commanding, they might get up and walk away. Okay, the last point might be pure fantasy, but the other thoughts are spot-on.
The worthy flagship of the Platinum Series 3G, these 44.5 x 16.9 x 20.6-inch (HWD) beauties will spoil you with such immersive, multi-dimensional soundstages that you won’t want to leave the room. Scale, depth, weight, power, clarity, tonal faithfulness: Platinum 300 3G knows each facet like you probably know what you ate for breakfast this morning. With measured in-room frequency response ranging from 17Hz to 60kHz, it literally and figuratively covers the bases of everything from deep, probing bass notes to the registers of Geddy Lee’s voice back when the singer was in his 20s. Rock or classical. Country or jazz. Hip-hop or experimental. Whatever you like, Platinum 300 3G will help you want more of it.
Loaded with an MPD III tweeter, four-inch RDT III midrange, and two eight-inch RDT III bass drivers, this rear-ported three-way design performs with spectacular tonal neutrality, naturalism, and full-range extension. You’ll get the imaging and precision of a phenomenal mini monitor along with the ability to turn the volume up as high as you want without inviting distortion or coloration. For these aspects, credit the engineering invested in the 118-pound Platinum 300 3G.
Specifically, the Rigid Diaphragm Technology III (RDT III) cone has three optimizations compared to its predecessor. A new rear layer with two uniform layers of carbon-fiber skin helps reduce cone breakup, as does a new rubber surround. In addition, cone-edge treatment extends the passband of the drivers. Combined, these breakthroughs increase the usable bandwidth, enabling improvements to the crossover and final response of the speaker. The result: Platinum Series 3G mid and bass drivers boast the lowest distortion of any Monitor Audio model. Ever. It's also worth noting each driver is held in place by cast-aluminum frames that create two layers of isolation between the driver chassis and cabinet.
About that can't-look-away cabinet. Constructed using laminated MDF layers to form a curved, braced, and super-rigid 18-21mm rear cabinet with a 36mm-thick baffle machined to create a unique curved front profile, the full cabinet comes embellished with etched inlays to highlight the craftsmanship before no fewer than 16 layers of lacquer gets added on top to create a striking, luxury piano-gloss finish. (White models have a pure satin matte finish.)
This statement-making instrument is completed with outrigger foot assemblies that form a near-unshakeable platform that delivers on the elegant aesthetic of what it supports. Sold with a five-year manufacturer warranty, the award-winning Platinum 300 3G represents everything unforgettable listening experiences should be about.
For more information, or to learn how you can audition this speaker risk-free in your home, call us at 312-433-0200.
"The speaker accomplishes what it does honestly, without smoke and mirrors. It’s a thoughtfully designed and beautifully built product that’s imperturbable with dynamic and bass-endowed source material, and a faithful communicator of musical color and character. It’s truly a remarkable value—a lot of speaker per dollar."
—The Absolute Sound, 2024 Editors' Choice Award
"With its clean, uncolored midrange, its well-controlled, extended low frequencies, its well-defined stereo imaging, and its ability to play much louder than my usual minimonitors, Monitor Audio's elegant-looking Platinum 300 3G is a high-performance loudspeaker. Strongly recommended."
—Stereophile
"[Gregarious], muscular, tender, enthusiastic, soothing and all the other words that apply to the art of playing music brilliantly."
—Hi-Fi+, Highly Commended
Highlights
- MPD III transducer
- 4" RDT III mid-range driver
- Two 8" RDT III bass drivers
- Totally immersive sound stage
- Flagship three-way loudspeaker
- Rear-ported
- Embellished with etched inlays
- Available in Piano Black, Piano Ebony and Pure Satin White
Downloads
User Manual (PDF, 692 KB)
Specifications
- System Format: 3-Way
- Frequency Response, Free-Field (-6dB)​: 25 Hz – 60 kHz​
- Frequency Response, In-Room (-6dB): 17 Hz – 60 kHz​
- Sensitivity (2.83 Vrms @ 1m, Free-Field)​​: 88 dB
- Nominal Impedance: 4 Ohms
- Minimum Impedance (20 Hz to 20 kHz)​​: 4.0 Ohms​ @ 3.75 kHz
- Continuous Power Handling​ ​(RMS into 4 Ohms, Pink Noise with 6dB Crest Factor): 400 W​
- Recommended Amplifier Power​ (RMS into 4 Ohm, Music Signal): 200 – 800 W​
- Bass Alignment: Ported
- Port Tuning Frequency: 32 Hz
- Crossover Frequency: LF/MF: 650 Hz​; MF/HF: 3 kHz
- Drive Unit Complement: 2 x 8" RDT III bass driver, ​1 x 4" RDT III mid-range driver, ​1 x MPD III tweeter
- External Dimensions including Trims, Terminals & Outrigger Feet & Spikes (H x W x D):
- 1131.1 x 429.8 x 525 mm​ (44.5 x 16.9 x 20.6")
- External Dimensions including Trims, Terminals & Outrigger Feet without spikes (H x W x D): 1114.5 x 429.8 x 524.4 mm​ (44.5 x 16.9 x 20.6")
- Weight (each): 53.6 kg​ (118 lb 2 oz)
- Warranty: 5 years





