BASSBOSS Makara, ZV28, Kraken Size Talk with David Lee
Minimum Effort, Maximum Bass: Moving and Stacking ZV28
Subwoofer Placement: Vertical vs. Horizontal - Advantages and Disadvantages
ZV28 MK3 Technical Overview
The BASSBOSS ZV28-MK3 Subwoofer
is designed to bring you up close and personal with the boundaries of audible sound. Reveal notes unfathomable with other subwoofers, delivered effortlessly. Frequencies that push other systems to their limits are brought to life powerfully and smoothly. The ZV28-MK3 isn’t just about hearing; it’s about feeling the power of the music.
The ZV28-MK3 is a vented, direct radiating subwoofer with a substantial internal volume, tuned to a low frequency. Advanced design features such as anti-standing wave baffles and pass-through dampers help reduce upper resonances while oversized ports enhance low-frequency performance at high output.
The ZV28-MK3 is built to run at full throttle. The woofers are kept within safe thermal and excursion limits throughout their operating range regardless of input level. The design guarantees a consistently flat frequency response, with a pair delivering -3dB to an impressive 21Hz. This performance is achieved without any need for equalization, and is available on demand at high levels in real-world scenarios.
Unlike other subs that may promise much but deliver little, the ZV28-MK3 actually performs as impressively in the field as it seems to on paper. Be cautious of loudspeaker systems that rely on bass-boost processing to meet their claimed frequency response, as they can often fall short when it comes to delivering quality sound at maximum power.
The ZV28-MK3 features a 5000W amplifier with an auto-sensing, globally compatible power supply that can run on input voltages anywhere between 90 and 250 Volts. Full output power is available on anything over 110V. The amplifier’s peak-output voltage provides for intense high SPL hits while its sustained output is unparalleled in its ability to deliver the liquid lows.
The amplifier is passively cooled via its external heatsink and by woofer-generated air-flow through the port. When necessary, four blower-fans will engage to provide additional forced-air cooling capacity in more extreme conditions.
New to the MK3 are Neutrik powerCON True 1 TOP (Total Outdoor Protection) waterproof mains connectors. Waterproof mains connectors along with a totally isolated input connection section and cones that are waterproofed make the MK3 series the powered loudspeakers that can be used outdoors without fear of what the weather will bring. (Or used indoors without fear of what the partiers bring.)
Electrical power is converted into the much more desirable acoustical power by two robust, neodymium motor, 18-inch woofers with massive 4.5-inch (115mm) voice coils. Neodymium magnets are lighter, and their higher intensity provides higher efficiency, so the result is a lighter and louder cabinet than those with ferrite drivers.
The MK3 features an all-new DSP. The comprehensive suite of processing includes high-pass and low-pass filters as well as multiple protection systems and limiters to prevent driver overload in as many ways as possible, including thermal, excursion and clipping. The five levels of protection actively prevent overheating of the voice coil, minimize long-term thermal compression and limit excursion. Because they operate in 5 different modes, the limiters are sophisticated enough to have a largely unnoticeable effect on the transient response and allow the subwoofer to deliver peak output safely.
The new DSP features an Ethernet interface. This can be used to control the cabinets from a computer or to load the ControlBASS software settings updates. The Ethernet connectivity in conjunction with the DSP board allows signal to be sent via Milan AVB. Future settings updates will provide access to this feature.
Within the software, multiple cabinets can be grouped together, allowing them to respond to commands simultaneously. This permits the levels of multiple loudspeakers to be adjusted together and yet independently from the levels of other groups of loudspeakers. In addition to individual and grouped level controls, presets can be loaded and signal levels and temperatures can be monitored.
Each cabinet includes a two-port switch so multiple cabinets can be chained on the same data cable. The MK3 DSP features storage capacity of up to 100 presets, eight of which can be accessed at the touch of a button with no need for a connected computer. The eight directly accessible presets are compatible with all the presets in the MK3 Top Boxes and are also compatible with previous generation tops and subs
Specifications
Acoustical
Loudspeaker Description: Double 18” Self-Powered Vented Direct-Radiating Extended-depth Subwoofer
Frequency Response (±3 dB): 23 – 90Hz
Maximum Sustained Output: 134 dB 1m (half-space)
Max SPL (Peak): 137 dB 1m (half-space)
Nominal Dispersion (H° x V°): 360 x 360 - Cardioid mode available with multiple cabinets
Electrical
Amplification: 5000 Watts Class D (2 x 2500W)
Processing: Integrated comprehensive DSP. 96kHz sampling rate with 8 pushbutton presets.
All presets include high pass filters, low pass filters, phase alignment, equalization
and multi-stage limiting. Storage capacity for up to 100 presets
Electrical Connectors, Amp: Neutrik powerCON True 1 TOP IP65 rated waterproof connectors
Electrical Connector, Mains: USA 3-pin grounding 120V electrical plug NEMA 5-15; Outside USA alternate connectors provided
Voltage Operating Range: 100-240V AC, 50-60Hz (Auto-sensing, auto switching universal supply)
Current Draw, Nominal: 120V 9A (nominal); 240V 4.5A (nominal)
Signal Input Connectors: XLR-F
Signal Output Connectors: XLR-M - full-range direct pass-through
LAN Connectors: EtherCON RJ45 (x2) with 2-port Ethernet switch
Physical
Enclosure Type: Direct radiating vented enclosure, optimally tuned for extended low frequency
response with linear output and high power handling
Transducer: 2 x 18” (457mm) neodymium motor woofers with 4.5 in. (115mm) CCAW
voice coils
Cabinet Construction: CNC machined 18mm Birch plywood, extensive bracing, dado joinery. 8 steel bar handles. 2 x 35mm steel pole sockets. 12 rubber feet. 4 interlocking foot pockets. 16 X M10 threaded fly points
Exterior Finish: High-pressure, bonded polyurea coating. Rugged, waterproof. Textured black
Suspension System: 16 X M10 Threaded Fly points
Grill: High-pressure, bonded polyurea coating. Rugged, waterproof textured black
Dimensions (HxWxD): 22.5 in. x 42 in. x 42 in. (Height of feet 7/8”)
Net Weight: 235 lbs. (106.5 kg)
Shipping Weight: 265 lbs. (120.2 kg)
Optional
Covers: Heavy-duty padded nylon transport covers for vertical or horizontal transport
Dollies: Birch plywood cart; 4 locking wheels; sockets for cabinet feet.
Vertical Transports 1 cabinet. Horizontal Transports up to 4 cabinets
Hardware: M10 Shoulder Eye Bolts, M10 Side-Pull anchors