Harbeth Nelson Bass Extender + Stand
The Nelson is Harbeth's dedicated bass extender and stand solution, built specifically for mini monitors like the P3ESR and BBC LS3/5A-derived models, adding real low-end weight without needing a separate subwoofer box.
A Harbeth 5-inch drive unit in a bandpass enclosure is powered by 50 watts of onboard digital amplification, with a DSP crossover that automatically optimizes frequency, phase, and shape so the Nelson takes over seamlessly as the host speaker's bass naturally rolls off. It's a genuine plug-and-play system, with just one rear-panel bass-level control and no test equipment or technical setup required, doubling as the speaker's stand.
Key specifications
| Description | Nelson bass extender + stand |
| Drive Unit | 110mm Harbeth-made bass unit in bandpass enclosure |
| Frequency Range | 35Hz - 75Hz ±3dB free-space |
| Max Power Output | 50W RMS |
| Impedance | Active, >5 kilohm transformer balanced input |
| Inputs | Fitted lead to host loudspeaker's binding posts |
| Power Supply | 24V DC, 2.5A, 5.5/2.1mm centre positive, reverse polarity protected |
| Height | 730mm to speaker mounting plate (+20mm with spikes); 1,145mm to top of P3ESR |
| Diameter | 350mm |
| Weight | 7.6kg each (without packing), 11.2kg (with packing) |
| Finish | Black |
| UK RRP | £2,735 / pair |
$ 2,735.00
$ 2,735.00