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Key Features
No. 25 combines the power of an ultra-reliable 1,000 watt amplifier, with a lightweight and perfectly balanced carbon fibre 15” driver. All this is controlled by REL legendary filter sets and proprietary crossovers with 2 separate parametric equalizers permitting remarkably flat in-room response, while maintaining the speed and resolution for which modern RELs have become known.
Product Ref: 203896
"A truly sublime subwoofer that delivers unsurpassed speed and ultra-realistic LF effects. Switch to hi-fi and its accurate bass gives music incredible passion and scale."
The brand new flagship REL No. 25 reference subwoofer commemorates and celebrates a quarter century of building the finest sub bass systems, while pointing to the future and the next 25 years as it employs RELs most advanced design, engineering and craftsmanship.
No. 25 combines the power of an ultra-reliable 1,000 watt amplifier, with a lightweight and perfectly balanced carbon fibre 15” driver. All this is controlled by REL legendary filter sets and proprietary crossovers with 2 separate parametric equalizers permitting remarkably flat in-room response, while maintaining the speed and resolution for which modern RELs have become known.
REL want our customers to enjoy all this performance without being limited to only a few room locations, so we built-in our legendary LongBow™ wireless receivers into every No. 25. This design utilizes zero compression, resulting in stunning dynamics and bass extension without being tethered to a cable, while delivering sound quality comparable to our competitor’s hardwired designs. It’s just another example of how we strive to offer complete and thoughtful solutions.
When we experience bass in real time out in the world, it occurs with height to it. It strikes our sinuses, it kicks at our chest cavities, it rumbles along the floor conveying power authority and majesty. Our Reference Line Arrays permits bass to emerge more naturally, adding a height component in how it propagates throughout the room. Since 90 percent of the energy produced by a system resides in the bass regions, Reference Line Arrays are the magic element missing from so many otherwise state of the art systems. This air, transparency and, of course, effortless power that Reference Line Arrays convey can’t be imagined, it can only be experienced in person.
It takes huge power to invest the No. 25 with the shattering dynamics of which it is capable. The rugged beast of a 1,000 watt NextGen3 amplifier that powers No. 25 has already proven itself in the field in one of our previous designs, making us comfortable with not only its startling sonic performance but also its reliability. However, No. 25 is no mere exercise in excess, but rather a thorough exposition in the art of rendering sub bass, totally, completely and with great deftness in tonality, expression and dynamics. Ultimately, this is what makes the No. 25 the addiction it quickly becomes.
Begin your relationship with REL Reference by simply picking up the remote in the cup of your hand. This is a carefully wrought system improvement that encourages the sort of finely detailed decisions during set-up necessary to achieve the perfect balance to the ultimate system owner. REL Reference models employ remote control in order to assist and increase ease of initial set-up.
REL do not recommend use of a single REL subwoofer with ANY brand of monoblock amplifier as it is possible to observe slight channel-to-channel dc offset that can result in mild oscillation. For any monoblock, REL recommend use of stereo pairs of the appropriate model of subwoofer.
Type | Closed box, front firing woofer |
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Drive Unit | 15 in., 380mm long throw, carbon fibre cone with inverted carbon fibre centre cap |
Lower Frequency Response in Room | 15 Hz at -6 dB |
Input Connectors | High Level Neutrik Speakon, Low Level stereo RCA, LFE RCA, LFE XLR |
Output Connectors | High Level, Low Level RCA, Balanced XLR, Daisy Chain Outputs |
Amplifier Type | NextGen3 Class D |
Power Output | 1,000 watts (RMS) Ultra High-Current Power Supply |
Mains Input Voltage | 220-240 volts, 110-120 volts for certain markets |
Phase Switch | Yes, 0 or 180 degrees |
Wireless Capability | Longbow (Optional) Zero Compression Individual discrete D/A and A/D Encoders |
Fully Electronic Set Safe | Yes |
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D.C. Fault | Yes |
Output Short | Yes |
Fuses | 7 Amp semi delay 230 volts operation 15 Amp semi delay 115 volts operation |
Dimensions W x H x D | 29 x 21.3 x 30 in. (736.5 x 540 x 762 mm) |
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Net. Weight | 168 lbs. (76 kg) |
Finish | Piano Black Lacquer 12 Coats |
Mains Lead | Yes |
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Neutrik Speakon Cable | Yes - 10 Meters |
Interconnect | Yes |
User Manual | Yes |
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