| Passive |
| Nominal Impedance (ohms) | 8 |
| Sensitivity (dB) | 88 |
| Recommended Amp Power (min) | 20 |
| Recommended Amp Power (max) | 100 |
| Low Frequency Response (Hz) | 48 |
| High Frequency Response (Hz) | 40,000 |
| Amplification | Passive |
Sources
https://www.pcrichard.com/polk-signature-elite-es15-high-quality-compact-bookshelf-speakers-pair-brown/ES15BROWN.html•https://audiolab.com/products/polk-audio-signature-elite-es15-bookshelf-speakers-pair•https://eu.horn.eu/en/HU/BRANDS/POLK_AUDIO/SIGNATURE/Signature_Elite_ES15•https://www.bhphotovideo.com/c/product/803328533-USE/polk_audio_300363_01_00_005_signature_elite_es15_two_way.html/specs
| Amplifier | Match Rating | Headroom |
|---|---|---|
| Outlaw Audio Model 2220 | Excellent | 100% |
| Naim Audio Uniti Nova Power Edition All-in-One | Excellent | 50% |
| Sansui G-9900ZDB | Excellent | 100% |
| Sansui G-9000DB | Excellent | 60% |
| McIntosh MC2152 | Excellent | 50% |