This lot of 2 Acoustic Research Holographic Imaging M2 woofers are a great addition to any vintage audio setup. With a frequency range of 65Hz-20kHz and the capability to handle 10-100w of power, these speakers are perfect for bringing your music to life. Made in the United States and featuring no modifications or customizations, these speakers are perfect for collectors or audio enthusiasts. The brand’s reputation for quality and durability is evident in the design of these speakers. The speakers are in excellent condition and have been well-maintained. Dust cap has holes.