18 Sound 12W700
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 58 Hz |
| Qts | 0.36 |
| Qes | 0.37 |
| Qms | 3.93 |
| Vas | 55 L |
| Sd | 531 cm² |
| Xmax | 6.5 mm |
| Re | 5.7 Ω |
| Bl | 17.7 T·m |
| Mms | 51 g |
| Pe | 450 W |
| Sensitivity | 98 dB |
Alignment hint
| EBP | 157 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 19.2 L |
EBP > 100: favours a ported (bass-reflex) alignment.
Rules of thumb from T/S parameters only. Verify against a real simulation before cutting wood.
Substitute candidates
| Driver | Fs (Hz) | Qts | Vas (L) | Xmax (mm) | Sens (dB) | Fit | Notes | Compare |
|---|---|---|---|---|---|---|---|---|
| Beyma 12MCS500 | 57 -1 | 0.36 = | 57 +2 | 8 +1.5 | 98 = | close | + | |
| Oberton 12NMB35 | 54.42 -3.58 | 0.36 = | 54.29 -0.71 | 6.75 +0.25 | 99 +1 | close | + | |
| Beyma 12"MC500 | 57 -1 | 0.34 -0.02 | 57 +2 | 8 +1.5 | 98 = | close | + | |
| PD PD 124NR1 | 58 = | 0.354 -0.01 | 49 -6 | 7.4 +0.9 | 97.3 -0.7 | close | + | |
| Precision Devices PD 124NR1 | 58 = | 0.354 -0.01 | 49 -6 | 7.4 +0.9 | 97.3 -0.7 | close | + | |
| Beyma 12MC500 | 57 -1 | 0.373 +0.01 | 54.9 -0.1 | 5.5 -1 | 97.8 -0.2 | close | Xmax 5.5 mm < 6.5 mm: lower excursion-limited SPL | + |
| SB Audience NERO-12MWN700D vp JustDiyIt | 54.4 -3.6 | 0.347 -0.01 | 53.6 -1.4 | 6.2 -0.3 | 97.5 -0.5 | close | Xmax 6.2 mm < 6.5 mm: lower excursion-limited SPL | + |
| B&C 12NDL88 | 50 -8 | 0.37 +0.01 | 55 = | 8 +1.5 | 97 -1 | close | 16 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 12W750 | 55 -3 | 0.33 -0.03 | 61 +6 | 8 +1.5 | 98 = | close | 16 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 12NTLW2500 | 60 +2 | 0.38 +0.02 | 45 -10 | 7.6 +1.1 | 98.5 +0.5 | close | + |
Compare the closest 3 against the 12W700 →
Ranked on parameter similarity only (Qts, Fs, Vas, Xmax, sensitivity). Same nominal size required. A hint, not a simulation, model the swap before cutting or buying.
Used in enclosures (0)
No enclosure in the catalog uses this driver yet.