Monitor Audio Platinum 100 3G Bookshelf Speakers

A compact two-way rear-ported bookshelf loudspeaker with MPD III tweeter, 6" RDT III mid-bass driver, and 85 dB sensitivity

The Monitor Audio Platinum 100 3G is a compact two-way bookshelf speaker designed to deliver a high-end listening experience from a relatively small cabinet. Its rear-ported enclosure and stand-compatible design make it a strong choice for smaller high-performance music systems where space is limited but resolution and scale still matter.

A new MPD III transducer handles high frequencies, joined by a 6" RDT III mid-bass driver. Monitor Audio says this combination improves on the previous generation, presenting sound with purity and precision while delivering an exceptionally engaging listening experience.

The Platinum 100 3G includes mount points for the previous Platinum 2G Stand and is directly compatible with Monitor Audio’s ST-2 Universal Stand. It is finished with etched inlays and is available in Piano Black, Piano Ebony, and Pure Satin White.

Objects of Desire

The Platinum 100 3G is engineered to deliver a compelling listening experience from a relatively diminutive loudspeaker. Its compact cabinet, rear-ported bass alignment, and 6" RDT III mid-bass driver give it the flexibility to work in smaller high-performance systems while retaining the refinement expected from Monitor Audio’s Platinum Series 3G.

MPD III and RDT III Driver Technology

The high-frequency section uses Monitor Audio’s MPD III transducer, partnered with a 6" RDT III mid-bass driver. This driver pairing is intended to improve purity, precision, and engagement compared with the previous generation.

Features

• Two-way bookshelf loudspeaker
• MPD III high-frequency transducer
• 6" RDT III mid-bass driver
• Rear-ported cabinet
• Mount points for the previous Platinum 2G Stand
• Directly compatible with the ST-2 Universal Stand
• Etched inlays
• Five-year warranty

Specifications

System Format: 2-way

Frequency Response, Free-Field (-6 dB): 37 Hz–60 kHz

Frequency Response, In-Room (-6 dB): 28 Hz–60 kHz

Sensitivity: 85 dB

Impedance (Nom., Min.): 4 ohm, 4 ohm

Bass Alignment: Ported

Port Tuning Frequency: 44 Hz

Crossover Frequency: 2.85 kHz

Drivers:
HF: 1 x MPD III tweeter
LF/Mid: 1 x 6" RDT III mid-bass driver

Dimensions (WHD): 8.8" x 15.6" x 12.8" (225 x 398 x 325.6 mm)

Weight: 33.5 lb. (15.2 kg)