18SOUND ND4020Ti2
18SOUND (Eighteen Sound) ND4020Ti2 — 2" / 2 inch Compression Driver · Tweeter / HF Driver · Neodymium · Titanium Dome
4" voice coil · 8 Ω
Part no.: 42A-CHS-KD-18S-0028
Documents
18SOUND ND4020Ti2 — Compression Driver
160 W AES · 113 dB Sensitivity · Frequency range 600 Hz – 20000 Hz
Technical data
- Diameter: 2 "
- Voice coil: 4 "
- Power handling: 160 W AES
- Sensitivity: 113 dB
- Impedance: 8 Ω
- Magnet: Neodymium
- Weight: 3.4 kg
- Mounting depth: 87 mm
- Frequency range: 600 – 20000 Hz
- Cone material: Titanium
- Exit: 51 mm (2.0 in)
- Rec. crossover: 0.8 kHz
Datasheet (PDF) · Manufacturer page
Series: ND · Part no.: 42A-CHS-KD-18S-0028
18Sound ND4020Ti2: 2" Compression Driver, 4" Voice Coil, 160 W AES
If you need a 2" driver for large horns, the 18Sound ND4020Ti2 from the ND series is the candidate: neodymium motor, 4" voice coil, titanium diaphragm, 51 mm exit and 8 Ω. The 2" format is the classic way to cross a 12" or larger mid-woofer low while still using a single high-frequency section.
The key figures: 113 dB sensitivity, 160 W AES and a working range from 0.6 kHz to 20,000 Hz. Mounting depth of 87 mm and 3.4 kg are moderate for a 2" driver with a 4" coil, thanks to the neodymium magnet. Compared with the smaller-throat sibling ND4015Ti2, the throat is larger, the lower limit sits deeper, and the diaphragm sees less compression load at the throat for the same SPL.
Use and enclosure
The recommended crossover is 0.8 kHz even though the response is usable from 0.6 kHz. That gap is the safety margin for operation at high level: a 24 dB/octave filter at 0.8 kHz keeps the diaphragm out of the excursion region where titanium starts to distort and fatigue. In a two-way box with a large woofer this is the typical split; in a three-way system with a dedicated midrange the ND4020Ti2 can run even more relaxed.
For a horn, 42.audio offers the 18Sound XR2064C with a 2" throat. Pairing a 2" throat with a narrow-dispersion horn is typical for far-field jobs such as replacing a line array in a mid-sized hall or covering longer throw distances. The PDF datasheet and the driver database provide the curves you need to simulate the combination in advance.
What to look out for
- 2" throat with 51 mm exit: matches the 18Sound XR2064C.
- 87 mm mounting depth: check that the horn leaves room inside the cabinet.
- 160 W AES at 8 Ω, sensitivity 113 dB.
- Crossover recommended at 0.8 kHz, not at the 0.6 kHz lower limit.
- 3.4 kg thanks to neodymium, relevant for flown systems.
Frequently asked questions
Does the ND4020Ti2 make sense in a three-way system?
Yes, and it runs with headroom there. When a midrange driver covers the region around the crossover, you can set the driver's crossover above the recommended 0.8 kHz and gain lower distortion and more thermal reserve.
Which horn fits the ND4020Ti2?
The driver has a 2" horn throat, so you need a horn with a 2" flange. At 42.audio the 18Sound XR2064C is the matching model; further options are in the 18Sound Horns & Waveguides category.
How does the ND4020Ti2 differ from the ND4015Ti2?
Both have a 4" voice coil, titanium diaphragm, 8 Ω and 160 W AES. The ND4020Ti2 has the 2" throat with a 51 mm exit and reaches lower, but is bigger at 87 mm mounting depth. The ND4015Ti2 is the more compact, smaller-throat driver for smaller horns.
At 42.audio you get the 18SOUND ND4020Ti2 with datasheet PDF, all key data in the driver database. More drivers from this manufacturer: Atlas 18Sound.
Specifications
| Allgemein | |
|---|---|
| Manufacturer | 18SOUND |
| Category | Compression Driver |
| Series | ND |
| Magnet | Neodymium |
| Impedance (Ω) | 8 |
| Power handling (W) | 160 |
| Sensitivity (dB) | 113 |
| Frequency from (Hz) | 600 |
| Frequency to (Hz) | 20000 |
| Abmessungen & Korb | |
|---|---|
| Diameter | 2 |
| Voice coil (inch) | 4 |
| Mounting depth (mm) | 87 |
| Weight (kg) | 3.4 |