The second-generation Speaker Box 5: same drivers, 2dB more sensitive, a braced MDF cabinet with a direct-wired crossover and no circuit board, and eight finishes including real walnut and eucalyptus veneer. Pro-Ject kept the recipe and rebuilt the execution. The 130mm fibreglass woofer and the 25mm silk-dome tweeter on a neodymium magnet carry over unchanged from the original Speaker Box 5, and so does the 55Hz–20kHz published response and the 10-to-150-watt amplifier recommendation. What changed is everything around them. The cabinet is described by Pro-Ject as ultra-stiff, non-resonating MDF with internal bracing, assembled with a low-emission Kleiberit adhesive. It is taller and deeper than the original — 271mm against 255 — and 700 grams heavier per speaker, which is where the bracing shows up. The port fires rearward. The crossover is direct-wired with no printed circuit board and lead-free solder, which is a choice you see more often several price brackets up. Whether it is the crossover or the cabinet or both, the published sensitivity has gone from 86dB to 88dB with the same drivers, and the impedance specification has firmed up from a 4–8Ω range to a straight 8Ω nominal — a friendlier load for a small amplifier. Finishes went from three gloss lacquers to eight: real walnut and eucalyptus veneers, plus satin black, white, yellow, green, blue and red. Magnetically attached, acoustically transparent grilles are included. One gap worth mentioning: the original Speaker Box 5’s specification stated that wall-mount hardware was included. Pro-Ject’s current S2 page does not mention mounting provision either way. Ask us before ordering if you intend to wall-mount them and we will check what is in the carton. Features 130mm fibreglass-cone woofer and 25mm silk-dome tweeter on a neodymium magnet 88dB sensitivity, up 2dB on the original Speaker Box 5 8Ω nominal impedance Braced, ultra-stiff MDF cabinet with a rear-firing bass reflex port Direct-wired crossover with no printed circuit board, lead-free solder Eight finishes: walnut and eucalyptus veneer plus six satin colours Magnetic, acoustically transparent grilles included Gold-plated single-wired binding posts Sold as a pair Specifications Type: Two-way bass-reflex standmount loudspeaker Sold as: A pair Tweeter: 25mm silk dome with a neodymium magnet Woofer: 130mm fibreglass cone Enclosure: Bass reflex via a rear-firing port Frequency response: 55Hz–20kHz. No tolerance figure is published Nominal impedance: 8Ω Minimum impedance: Not published Sensitivity: 88dB, 1W at 1m Recommended amplifier power: 10 to 150 watts RMS Crossover: Direct-wired with no printed circuit board, lead-free solder. Crossover frequency and slope are not published Binding posts: Gold-plated, single-wired Cabinet: Ultra-stiff non-resonating MDF with internal bracing, assembled with Kleiberit adhesive Finishes: Walnut and eucalyptus real-wood veneer, plus satin black, white, yellow, green, blue and red — eight in total Dimensions: 160 x 271 x 215 mm as published by Pro-Ject Weight: 4.9kg per speaker Grilles: Acoustically transparent, magnetically attached, included Wall or stand mounting: Not stated on Pro-Ject’s current page. The previous generation included wall-mount hardware; ask us and we will check the carton contents Country of manufacture: Handmade in Europe. Pro-Ject does not name a specific country Warranty: Two years from date of purchase, extendable to three years by registering the product with Pro-Ject and subscribing to their newsletter. Pro-Ject states that warranty is administered by the local distributor and that terms can vary by region; no separate United States term is published. Coverage requires purchase from an authorised dealer — The ’In Groove is one.
