
Acoustic Audio AA5170
Score: 76/100
Polk Monitor XT15 Midnight Black
Score: 81/100Rankings

The Polk Monitor XT15 is a compact two-way bookshelf speaker pair offering Hi-Res audio up to 40 kHz and integrated Dolby Atmos/DTS-X support. Its limited low-frequency response and narrow vertical dispersion can restrict bass performance and placement flexibility. Ideal for small to medium rooms where clarity and detail are prioritized.

The Acoustic Audio AA5170 is a 5.1-channel home-theater system delivering 700 W of power with Bluetooth streaming and a suite of wired inputs. Its wired satellite speakers and manual mode switching limit flexibility, making it best for budget-focused users seeking a complete plug-and-play setup.
| Attribute | ![]() | ![]() |
|---|---|---|
20 kHz | 40 kHzbest | |
— | 86 dBbest | |
700 Wbest | — | |
— | 8 Ωbest | |
| ↓ lower better | 9.07 kg | 4.08 kgbest |
5.1best | 2 | |
— | 5 yearsbest | |
— | 2.54 cmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Audio(3) | ||
Frequency Response (kHz) | 20 kHz | 40 kHz |
Channels | 5.1 | 2 |
RMS Power (W) | 700 W | 30-150 W |
Build & Design(2) | ||
Weight (kg) | 9.07 kg | 4.08 kg |
Dimensions (H×W×D) (cm³) | 71810 cm³ | 8115 cm³ |


Products in the top-left offer the best value (high score, low price).

Professional reviewers are not present in the available sources; manufacturer and retailer descriptions emphasize value, plug‑and‑play convenience, and Bluetooth streaming, but no independent editorial assessments were found.
Everyday users appreciate the solid feel of the heavy subwoofer, the completeness of the included cabling, and the ease of initial setup, while noting the wired nature of the satellites and the need to manually switch from 2.1 to 5.1 as minor inconveniences.

“Heavy subwoofer, simple rear-panel connections, and complete cabling for quick integration.”


Professional reviewers commend the XT15 for delivering a balanced, detailed soundstage with impressive high-frequency extension and solid imaging for its price. They also note the limited low-frequency output and the need for careful placement due to narrow vertical dispersion and the rear-ported design.
Everyday users appreciate the speakers' compact footprint, straightforward wiring, and clear highs, especially in small home-theater setups. The most common complaints revolve around the need for a subwoofer to achieve deeper bass and the speakers' sensitivity to placement.