AP-M81SE 4x8 LOUD AS HELL planka slope v4

AP-M81SE 4x8 LOUD AS HELL SPL-board Slope V4 – Sylvester performance with high-end SPL top end

The AP-M81SE 4x8 LOUD AS HELL SPL-board Slope V4 is the board for those who want the proven midrange power of the Sylvester series, paired with a high-end horn tweeter that delivers both SPL and control. A system for those who want to play loud – with style and balance.

The midbass drivers, AP-M81SE, offer 170W RMS power handling and a recommended frequency range of 150–8000 Hz. Known for their rugged build and direct character, they provide enough punch to carry a system on their own – whether you're demoing or enjoying daily playback.

Treble is provided by two Deaf Bonce AT-37 Sport horn tweeters – a high-end option featuring 60W RMS, 1.5" voice coil, polycarbonate diaphragm, neodymium magnet, and 108.8 dB sensitivity. These tweeters deliver focused energy, clarity, and power in the upper range, even at high SPL levels.

The system uses DB 2-way filters v2, with crossover set at 4000 Hz (12 dB/oct) and three-level attenuation (0, -3, -6 dB), allowing you to perfectly balance the top end with the punch of the Sylvester midbass drivers.

The setup is built for installation in a LOUD AS HELL 4x8" SPL-board Slope – heavy-duty MDF, angled design, embroidered logo, and side-mounted terminal.

The AP-M81SE 4x8 LOUD AS HELL SPL-board Slope V4 is the choice for those who want reliable midbass with raw character – and a top end that matches in both SPL and tonal precision.

NOTE! This package is sold as a DIY kit
The tweeter holes in the enclosure may be smaller than the delivered tweeters. This is to allow compatibility with most tweeters in the included universal box. Some filing or adjustment may be necessary for a perfect fit.