IKEA Bluetooth Speaker Acoustic & Battery Calculator

Enclosure & Driver Hardware

Big Sibling (New Edition)

Cabinet Enclosure Volume 2.4 L

0.2L (Pocket/Shower) 1.0L (Shelf) 3.5L (Bookshelf / Sub)

Transducer / Driver Diameter 3.25 in

1.5" (Micro Neodymium) 3.25" (Full-Range Woofer) 5.0"

Class-D Amplifier Output 15 W

Lithium Battery Pack Capacity 36 Wh

Target Listening Volume 75 dB SPL @ 1m

Acoustic Law (Iron Law of Audio): Small speaker enclosures must sacrifice bass extension ($f_c$), sensitivity, or battery efficiency. Stepping from the tiny portable model up to the bigger sibling cabinet grants deeper sub-60Hz punch.

Bass Cutoff (-3dB)

58.4Hz

Helmholtz lower knee ($f_c$)

Peak Sound Pressure

92.2dB

Max clean SPL @ 1 meter

Estimated Battery Life

18.5hrs

Continuous playback @ 75 dB

Acoustic Tier

Full-Room High Fidelity

Cabinet resonance classification

Simulated Frequency Response (20 Hz - 20 kHz) ▬ Current Setup - - Tiny Speaker Baseline

Acoustic Design Insight: By expanding internal air volume to 2.4L and matching a 3.25" high-excursion cone, Helmholtz cavity resonance is relieved without requiring harsh active DSP bass shelving.

Power consumption at current target: 1.95 W average draw.

Saved speaker acoustic model arithmetic

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Read the explanation

At saved cabinet two point four liters and driver three point two five inches, both reference ratios equal one. The calibrated cutoff is fifty-eight point four hertz. Both bars show unchanged reference and result at ten pixels per hertz. Brand, driver and enclosure claims are source fixtures, not measured acoustic response. Saved sensitivity eighty point four four adds ten times base-ten logarithm of fifteen watts, about eleven point seven six, giving ninety-two point two decibels. Bars compare sensitivity and modeled maximum at six pixels per decibel. Decibels are logarithmic; this visual depicts labeled numerical values and does not imply linear acoustic energy. Saved big preset battery is thirty-six watt-hours versus tiny preset five point five. Bars share zero at fifteen pixels per watt-hour. Runtime divides energy by source draw: idle point nine five plus acoustic power demand times three point four seven seven and amplifier correction, bounded below point two watts. Increased target loudness raises exponential power demand and reduces modeled runtime. This is a heuristic, not battery testing or a purchasing recommendation. Native raw export/reset and responsive dimensions remain preserved.