The Yamaha NS-615B is a compact, high-performance 2-way acoustic suspension speaker designed to accurately reproduce music. It features an 180mm woofer with a large diameter voice coil and a tweeter with unique tangential edge support, housed in an enclosure benefiting from Yamaha's woodworking experience.
This document provides instructions for removing the grille, connecting the speaker to an amplifier using push-spring terminals, and positioning the unit for optimal sound. It also details important precautions regarding input power levels and room placement to ensure high-quality audio reproduction.
| Impedance | 8 ohms |
|---|---|
| Rated Input Capacity | 25W |
| Maximum Input Capacity | 50W |
| Frequency Response | 60 Hz — 20,000 Hz |
| Crossover Frequency | 2 kHz (12 dB/Oct) |
| Dimensions (HxWxD) | 382 x 215 x 199 mm |
Grasp the bottom on both sides and gently pull it away from the cabinet, then continue by removing the upper part.
The rated input is 25W, which is the maximum average input possible for long listening with optimum response.
The unit measures 382 x 215 x 199 mm, which is approximately 15" x 8-1/2" x 7-13/16".
Ideally, the speakers should be separated by a distance of 1.5 — 2 meters to maintain proper stereo effect.