FBT Muse 218S Sound Reinforcement Subwoofer User Manual
- June 4, 2024
- FBT
Table of Contents
FBT Muse 218S Sound Reinforcement Subwoofer
MAIN APPLICATIONS
Permanent installations in:
- Theatres, Concert Halls, Clubs, Places of Worship, Conference
- Rooms, Indoor Sports, Arenas & Stadiums
- Sound reinforcement for live events:
- Touring, Bands, Orchestras
MAIN FEATURES
- Ground stack direct load subwoofer
- Double 18’’ (460mm) B&C very high excursion woofer with 4’’ (100mm) voice coil
- Frequency Response from 30Hz @-6dB
- Very large area reflex port to ensure no power compression and very low port turbulence
- 0.7’’ (18mm) birch plywood enclosure, scratch resistant black paint, 6 handles and heavy duty metal grille with synthetic protection cloth
- M20 top mount stand socket
- Optional 4 swivel-mount 4’’ (100mm) casters
- Low frequency extension cabinet for the MUSE 210 line array for ground stacked configurations
DESCRIPTION
MUSE 218S is a direct radiation ground subwoofer, has two B&C 460mm long excursion speakers with 100mm voice coil and 4000W/4Ohm recommended amplifier power, capable of 148.5dB SPL. The bass-reflex cabinet offers substantial energy up to 30Hz and is ideal for extending and reinforcing the low frequencies of the MUSE 210 line array in ground-stack configuration. With external DSP presets is possible to create various configurations with cardioid directivity, where some subwoofers face rearwards from the audience to acoustically cancel the sound pressure behind the cluster, obtaining a reduction of the SPL on the back by over 15dB. The enclosure, optimized with BEM-type acoustic simulations to reduce resonance and turbulence of the ducts, is built with 18mm birch plywood with six handles and scratch-resistant paint. Reinforced front mesh with protective fabric and provision for optional four swivel-mount 4 ‘’ (100mm) casters in the rear panel. The rear facing input panel provides 2 Neutrik NL4 M speakon female connectors.
TECHNICAL SPECIFICATIONS
CONNECTION PANEL
SPEAKON
MUSE218S is a 1-way system, that is, it needs to be driven by an amplification
channel suitably processed with DSP parameters supplied by FBT. Improper use
of the system with incorrect DSP settings can compromise the reliability of
the transducers and exhibit suboptimal acoustic performance. Internally there
is no passive crossover, the speakers are connected directly to the SPEAKON
connectors. In the rear dashboard there are two NeutriK Speakon NL4 M
connectors, an input and an output. The internal configuration of the
connection allows you to connect two speakers with a 4-wire cable and drive
them each with a dedicated amplifier channel. Attention! In this configuration
it is necessary to use a 4-wire SPEAKON cable between the amplifier and the
first speaker! Connect amplifier output channel 1 to terminals 1+ / 1- and
channel 2 to terminals 2+ / 2- of the SPEAKON INPUT. Channel 1 is used to
drive the speakers of the first connected speaker, while channel 2 is
relaunched on terminals 1+ / 1- of the output SPEAKON which will be connected
to the input of the second speaker with a normal two-pole speakon cable. In
the case of LINK of 4 SPEAKERS it is necessary to use a 4-pole SPEAKON cable
also for the LINKS and consider that SPEAKER number 1 and 3 will be connected
in parallel as well as speakers number 2 and 4. The impedance seen by the
amplifier is halved , it will therefore be necessary to choose amplifiers
capable of driving the impedance resulting from the parallel of the connected
speakers The section of the SPEAKON cable must be suitable for the current
supplied to the speakers. We generally recommend using the following sections
2.5mm2 length up to 20mt / 4mm2 over 20 mt
DIMENSION DRAWING
ACCESSORIES
MUSE models feature a suspension system embedded in the bearing structure. The
only element to be added (accessories) to realize complete arrays is the
MS-F210 flybar for the configuration with a subwoofer on top or to ground
satellites over the sub.