The Boss Audio MCBK634B.64 bundle delivers a complete marine audio system in one package, pairing the MR634UAB single-DIN receiver with four MR6B 6.5-inch full-range speakers and an MRANT10 black antenna. Every component is built for the marine environment, with conformal-coated circuitry, UV-protected panels, and weather-resistant speaker construction to hold up on the water.

Specifications:

• Kit includes: MR634UAB marine receiver, four MR6B 6.5-inch speakers (two pairs), MRANT10 black antenna, and black wireless remote
• Single-DIN receiver fit
• Receiver max power: 50 watts x 4
• AM/FM tuner with switchable US and EU tuner frequencies
• Bluetooth hands-free calling and Bluetooth audio streaming (Spotify, Pandora, and other apps)
• Media playback: USB, SD card, MP3, WMA, and Bluetooth — no CD/DVD player
• USB port with 1A USB charging
• Auxiliary input; compatible with audio output from iPhones, smartphones, and MP3 players
• Front and rear pre-amp outputs
• Preset built-in EQ
• Detachable front panel
• UV-protected front panel
• Conformal-coated PCB
• Push-to-talk
• Speaker cone material: polypropylene (receiver-spec) / poly carbon cone with rubber surround (MR6B)
• Speaker surround: resin-treated cloth (receiver-spec) / rubber surround (MR6B)
• Speaker basket: composite
• Dual cone speaker design
• Speaker max power handling: 180 W per speaker; 200 W per pair
• Nominal impedance: 4Ω
• System sensitivity: 86 dB (1W/1m)
• Frequency response: 85 Hz–20 kHz, ±3 dB
• Speaker overall diameter: 7.5 in. / 191 mm
• Speaker installation hole diameter: 5.47 in. / 139 mm
• Speaker mounting depth: 2.24 in. / 57 mm
• Speaker grill protrusion: 0.87 in. / 22 mm
• Speaker outer motor diameter: 3.7 in. / 94 mm
• Receiver unit dimensions (L x W x H): 3.94 x 7.4 x 2.28 in.
• Receiver weight: 1.1 lbs.
• Shipping weight: 9.25 lbs.
• Box dimensions (H x L x W): 16.93 x 8.35 x 8.07 in.
• Box weight: 9.25 lbs.
• Master carton weight: 18.5 lbs.