18SOUND 12ND710
18SOUND (Eighteen Sound) 12ND710 — 12" / 12 inch · Midrange with Lower Midrange (ML) · Midrange · Neodymium
3" voice coil · 8 Ω
Part no.: 42A-CHS-MT-18S-0013
Documents
18SOUND 12ND710 — 12" · Midrange Driver
450 W AES · 101 dB Sensitivity · Frequency range 60 Hz – 6000 Hz
Technical data
- Diameter: 12 "
- Voice coil: 3 "
- Power handling: 450 W AES
- Sensitivity: 101 dB
- Impedance: 8 Ω
- Magnet: Neo
- Weight: 4.4 kg
- Mounting depth: 141 mm
- Frequency range: 60 – 6000 Hz
Datasheet (PDF) · Manufacturer page
Series: ND · Part no.: 42A-CHS-MT-18S-0013
18Sound 12ND710: 12" neodymium low-mid/midrange with 5 mm Xmax and 60–6,000 Hz
Xmax 5 mm, Qts 0.2, usable range 60 to 6,000 Hz: the 18Sound 12ND710 is the ND-series low-mid/midrange driver for bass-reflex tops – a 12" neodymium driver with 3" voice coil, 450 W AES, 101 dB sensitivity at 8 Ω and 4.4 kg. It sits between the pure midranges with very low Qts and the woofers that have excursion but are no longer clean in the upper mids.
Fs 52 Hz, Vas 92 l and Qms 6 describe a driver with low mechanical losses; BL 18 Tm at 40 g cone mass is a strong but not over-damped motor. The 1 mH inductance stays within bounds for a 3" coil, and the bandwidth to 6,000 Hz shows the cone still works under control in the upper mids. Mounting depth 141 mm.
Use and enclosure
Bass-reflex guideline: 14 l tuned to 93 Hz, lower cutoff around 129 Hz. That suits a compact three-way top in which the 12ND710 covers the low mids above a subwoofer; the EBP of 260 clearly favours this reflex solution over a large sealed box. As a sealed midrange chamber: about 8 l at a 184 Hz corner frequency, then with a high-pass well above 60 Hz. The enclosure calculator at 42.audio handles the fine design.
For the treble there is room up to 6,000 Hz – a 2" compression driver on a large horn for high SPL or a 1" driver with a high crossover. Similarly aligned are the B&C 12NDL76 (Fs 50 Hz, Qts 0.2, Vas 73 l) and the woofers 12ND940 and 12ND930 from the same range, which with similar Qts are bass alternatives when more extension is required.
What to look out for
- Xmax 5 mm, Fs 52 Hz: low mids in a 14 l reflex box, subwoofer below.
- 101 dB at 8 Ω: high efficiency, little level matching needed.
- 450 W AES, 3" coil: for continuous duty in low mids and midrange.
- 4.4 kg, 141 mm deep: neodymium, light but not shallow.
- 60–6,000 Hz: free choice of crossover to the tweeter.
Frequently asked questions
12ND710 or 12ND610?
The 12ND710 has more excursion and a higher Qts, so it is meant for bass-reflex tops with low-mid duty. The 12ND610 is damped harder and designed for horn loading or pure midrange chambers. If you need low mids, take the 12ND710.
Which enclosure for a two-way top with sub?
Bass-reflex around 14 l tuned to 93 Hz, lower limit around 129 Hz, high-pass above the tuning. Upwards you cross below 6,000 Hz to the compression driver; the figures are guidelines.
Which amplifier?
A channel with up to 450 W into 8 Ω. With 101 dB sensitivity power is rarely the bottleneck; the high-pass decides whether the 5 mm Xmax is enough for music or gets used up by sub-bass.
At 42.audio you get the 18SOUND 12ND710 with datasheet PDF, all key data in the driver database and the enclosure calculator. More drivers from this manufacturer: Atlas 18Sound.
Thiele-Small parameters
| Nominal impedance | 8 Ω |
|---|---|
| Resonance frequency fs | 52 Hz |
| Total Q Qts | 0.2 |
| Electrical Q Qes | 0.2 |
| Mechanical Q Qms | 6 |
| Equivalent volume Vas | 92.0 l |
| Moving mass Mms | 40.0 g |
| Cone area Sd | 530 cm² |
| Linear excursion Xmax | 5 mm |
| Force factor BL | 18 Tm |
| DC resistance Re | 5 Ω |
| Voice coil inductance Le | 1 mH |
Comparable drivers
Same size, same type, Qts within ±30 %.
- B&C Speakers 12NDL76fs 50 Hz · Qts 0.2 · Vas 73 l · in the database
- 18 Sound 12ND940fs 49 Hz · Qts 0.2 · Vas 64.8 l · in the shop
- B&C Speakers 12NW100fs 44 Hz · Qts 0.2 · Vas 43.3 l · in the database
- B&C Speakers 12MH32fs 53 Hz · Qts 0.19 · Vas 63 l · in the database
- B&C Speakers 12NW100fs 42 Hz · Qts 0.2 · Vas 44 l · in the database
- 18 Sound 12ND930fs 50 Hz · Qts 0.21 · Vas 70 l · in the shop
Specifications
| Allgemein | |
|---|---|
| Manufacturer | 18SOUND |
| Category | Mid Frequency |
| Series | ND |
| Magnet | Neo |
| Impedance (Ω) | 8 |
| Power handling (W) | 450 |
| Sensitivity (dB) | 101 |
| Frequency from (Hz) | 60 |
| Frequency to (Hz) | 6000 |
| Abmessungen & Korb | |
|---|---|
| Diameter | 12 |
| Voice coil (inch) | 3 |
| Mounting depth (mm) | 141 |
| Weight (kg) | 4.4 |
| Thiele-Small-Parameter | |
|---|---|
| Re (Ω) | 5 |
| Le (mH) | 1 |
| Fs (Hz) | 52 |
| Qms | 6 |
| Qes | 0.2 |
| Qts | 0.2 |
| Vas (l) | 92 |
| Xmax (mm) | 5 |
| BL (Tm) | 18 |
| Mms (kg) | 0.04 |
| Sd (m²) | 0.053 |