Mackie CR4.5BT Active Studio Monitor 2 pcs

Mackie CR4.5BT — Compact Powered Monitors for Work and Play

Mackie CR4.5BT powered studio monitors suit creators who split time between tracking, gaming, and casual listening. Each cabinet pairs a woven-cone woofer with a 1-inch silk dome tweeter, driven by 50 watts of bi-amplified Class A/B power. Response spans 55 Hz to 20 kHz, so kick drums and vocals stay defined while cymbals retain crisp detail. Bluetooth 5.0 streaming sits alongside wired TRS, RCA, and 3.5 mm inputs for one pair that handles an audio interface by day and a smartphone playlist at night.

What Sets the CR4.5BT Apart

Two front-panel controls shape the sound on the fly. The tone knob starts at a flat response for tracking and mixing, then rotates clockwise into a smiley-face EQ that boosts bass and adds sparkle for gaming and party playback. The location switch flips between desktop mode for nearfield work and bookshelf mode for filling a larger room. A waveguide around the tweeter widens dispersion, while the custom-tuned rear bass port extends low-end weight beyond what the small cabinet suggests.

Driver Design and Amplification

A two-way design pairs a 4.5-inch woven woofer with a 1-inch silk dome tweeter, an upgrade from the previous generation's polypropylene-coated woofers and 3/4-inch tweeters.

• Woofer: 4.5" woven composite with rubber surround — tight, controlled low-end that stays musical at moderate listening levels.
• Tweeter: 1" silk dome with protective grille — smooth, fatigue-free highs.
• Amplifier: 50 W RMS Class A/B, bi-amplified — clean articulation with reserve headroom.

Inputs, Bluetooth, and Front-Panel Controls

On the rear panel, balanced 1/4-inch TRS jacks, stereo RCA, and a 3.5 mm aux input sit alongside Bluetooth 5.0 that pairs phones, tablets, and laptops wirelessly.

• Wired Inputs: 1/4" TRS, RCA, 3.5 mm stereo — direct hookup to interfaces, mixers, and turntables.
• Wireless Input: Bluetooth 5.0 — cable-free streaming.
• Headphone Output: 3.5 mm front-panel jack — auto-mutes the speakers for silent monitoring sessions without unplugging cables.

Cabinet, Dimensions, and Placement Flexibility

Built from all-wood MDF with vinyl wrap, the enclosure keeps resonance under control, and the rear-firing bass port is custom-tuned to the driver.

• Frequency Response: 55 Hz – 20 kHz — full-range coverage for music and dialogue.
• Max SPL: 100 dB — enough output before audible breakup.
• Dimensions (H × W × D): 226 × 155 × 211 mm — fits beside a laptop or on a desktop stand.
• Weight (pair): 4.5 kg — light enough to reposition between setups.

Who Should Buy the CR4.5BT

The CR4.5BT is the right choice for bedroom producers, content creators, and remote workers who need one pair of speakers that handles tracking, editing, gaming, and streaming. Bedroom producers get a flat reference for vocal recording and mix decisions, then dial in the tone knob for casual playback when the session ends. Content creators benefit from the Bluetooth input for quick phone-based checks and the front-panel headphone jack for late-night editing. Casual listeners will appreciate the 50-watt amplifier, the rear bass port, and the location switch that adapts voicing to any placement.

Mackie and the CR Series Legacy

Mackie has been building pro audio gear in Woodinville, Washington since 1988, and helped define the affordable powered monitor category with the original HR824 in 1997. The third-generation CR Series carries that DNA into a compact form factor, with this model as the mid-size option that pairs naturally with the matching CR8SBT subwoofer for a 2.1 setup.