# TAD Evolution One AX

Floorstanding passive loudspeaker from the Evolution series, made by TAD (🇯🇵 JP).

Source: https://truescaleaudio.com/en/speaker/tad-evolution-one-ax
Manufacturer page: https://www.technicalaudiodevices.com/e1ax/

## Dimensions

| Dimension | Metric | Imperial |
| --- | --- | --- |
| Height | 1146 mm | 45.1 in |
| Width | 347 mm | 13.7 in |
| Depth | 518 mm | 20.4 in |
| Weight (each) | 54 kg | 119 lb |

## Drivers

- 2 × 160 mm (6 in) woofer — aramid, MACC — woven and non-woven aramid laminated into one cone, on a Linear Drive magnetic circuit
- 1 × 90 mm (3.5 in) midrange — magnesium, CST coaxial — a scaled-down version of the 14 cm CST used higher up the range
- 1 × 25 mm (1 in) tweeter — beryllium, CST coaxial, vapour-deposited beryllium as in the R1TX

## Specifications

| Specification | Value |
| --- | --- |
| Type | Floorstanding |
| Power | Passive |
| Enclosure | Bass reflex, down-firing port |
| Frequency response | 29–60000 Hz |
| Crossover | 420 / 2500 Hz |
| Sensitivity | 88 dB |
| Impedance | 4 Ω nominal |
| Power handling | 200 W |
| Price (USD) | $37,995 / pair |
| Introduced | 2025 |

## About

The 2025 replacement for the Evolution One TX, and on paper almost the same speaker: two 160 mm aramid woofers under a CST coaxial, 29 Hz to 60 kHz, crossed at 420 Hz and 2.5 kHz, 88 dB into 4 ohms. What changed is underneath. The cabinet lost 7 cm of height and gained 8 kg, and the tweeter is now the vapour-deposited beryllium dome from the R1TX rather than the old one, sitting in the acoustic centre of a 90 mm magnesium midrange — TAD's point-source idea scaled down from the 14 cm CST in the Reference line. The woofers use a MACC cone, woven and non-woven aramid laminated together. The port is a bidirectional ADP at the base of the enclosure with flared openings facing both front and back, so the reaction forces cancel instead of shaking the box, and a 10 mm machined steel plate underneath holds it still. Black, or a new glossy white.

## See it to scale

This catalogue draws cabinets at their real size side by side, which no text version can reproduce. Compare the TAD Evolution One AX against another speaker at https://truescaleaudio.com/en/compare?a=tad-evolution-one-ax