18SOUND 15NCX910
18SOUND (Eighteen Sound) 15NCX910 — 15" / 15 inch Coaxial Driver · Coax / Coaxial Driver · Neodymium
3"/3" voice coils · 8 Ω
Part no.: 42A-CHS-KO-18S-0011
Documents
18SOUND 15NCX910 — 15" · Coaxial Driver
450 W AES · 99.5 dB Sensitivity · Frequency range 50 Hz – 4000 Hz
Technical data
- Diameter: 15 "
- Voice coil: 3 "
- Power handling: 450 W AES
- Sensitivity: 99.5 dB
- Impedance: 8 Ω
- Magnet: Neodymium
- Weight: 6.5 kg
- Mounting depth: 205 mm
- Frequency range: 50 – 4000 Hz
- Coverage angle: 80 °
- Rec. crossover: 1.2 kHz
Datasheet (PDF) · Manufacturer page
Series: NCX · Part no.: 42A-CHS-KO-18S-0011
Thiele-Small parameters
| Nominal impedance | 8 Ω |
|---|---|
| Resonance frequency fs | 55 Hz |
| Total Q Qts | 0.33 |
| Electrical Q Qes | 0.34 |
| Mechanical Q Qms | 8.2 |
| Equivalent volume Vas | 107.0 l |
| Moving mass Mms | 86.0 g |
| Cone area Sd | 881 cm² |
| Linear excursion Xmax | 7 mm |
| Force factor BL | 21 Tm |
| DC resistance Re | 5 Ω |
| Voice coil inductance Le | 1.1 mH |
Enclosure suggestion
The EBP of 162 suggests a bass-reflex enclosure. EBP = fs / Qes = 55 / 0.34
Sealed (Qtc 0.707)
- Enclosure volume Vb
- 29.8 l
- System resonance Fc
- 118 Hz
- Cut-off frequency F3
- 118 Hz
Bass reflex (QB3 after Small)recommended
- Enclosure volume Vb
- 55.1 l
- Tuning frequency Fb
- 68 Hz
- Cut-off frequency F3
- 74 Hz
Vb is the required net internal volume, Fb the tuning frequency of the reflex port and F3 the frequency at which the level has dropped by 3 dB. Calculated approximation after Small. A starting point for simulation, not a finished build plan.
Comparable drivers
Same size, same type, Qts within ±30 %.
- 18 Sound 15NCX910BEfs 55 Hz · Qts 0.33 · Vas 107 l · in the database
- 18 Sound 15NCX910Nfs 55 Hz · Qts 0.33 · Vas 107 l · in the shop
- 18 Sound 15NCX1000fs 53 Hz · Qts 0.31 · Vas 75 l · in the shop
- B&C Speakers 15CXN88fs 47 Hz · Qts 0.3 · Vas 124 l · in the database
- B&C Speakers 15HTX100fs 52 Hz · Qts 0.29 · Vas 78 l · in the database
- 18 Sound 15NCX750fs 49 Hz · Qts 0.37 · Vas 141 l · in the shop
Specifications
| Allgemein | |
|---|---|
| Manufacturer | 18SOUND |
| Category | Coaxial |
| Series | NCX |
| Magnet | Neodymium |
| Impedance (Ω) | 8 |
| Power handling (W) | 450 |
| Sensitivity (dB) | 99.5 |
| Frequency from (Hz) | 50 |
| Frequency to (Hz) | 4000 |
| Abmessungen & Korb | |
|---|---|
| Diameter | 15 |
| Voice coil (inch) | 3 |
| Mounting depth (mm) | 205 |
| Weight (kg) | 6.5 |
| Thiele-Small-Parameter | |
|---|---|
| Re (Ω) | 5 |
| Le (mH) | 1.1 |
| Fs (Hz) | 55 |
| Qms | 8.2 |
| Qes | 0.34 |
| Qts | 0.33 |
| Vas (l) | 107 |
| Xmax (mm) | 7 |
| BL (Tm) | 21 |
| Mms (kg) | 0.086 |
| Sd (m²) | 0.0881 |