Hertz Speaker Drivers
Hertz is represented in the Load Forge catalog by 76 speaker drivers, covering 3" to 15". Resonance (Fs) spans 23–123.4 Hz and total Q (Qts) 0.33–0.92, so the range covers both compact sealed alignments and large vented subwoofers. Every entry below links to its Thiele/Small parameters and calculated sealed and bass-reflex box designs.
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Drivers
76
Diameter
3"–15"
Fs Range
23–123.4 Hz
Qts Range
0.33–0.92
Price Range
199–899
Filter Hertz Speaker Drivers by diameter
All Hertz Speaker Drivers — parameters & designs
| Model | Size | Fs | Qts | Vas | Price |
|---|---|---|---|---|---|
| AR AUDIO MIDRANGE MILLE PRO MP70 3 | 3" | 110 Hz | 0.82 | 1 L | — |
| LEGEND ML700.3 | 3" | 110 Hz | 0.57 | 1.1 L | — |
| MILLE LEGEND MLK7003 | 3" | 110 Hz | 0.57 | 1.1 L | — |
| HEX 4 C C | 4.5" | 123.4 Hz | 0.88 | 1.5 L | — |
| HEX 4 C W | 4.5" | 123.4 Hz | 0.88 | 1.5 L | — |
| MILLE PRO MPK130 3 | 5.25" | 90 Hz | 0.64 | 3 L | — |
| HEX 6 5 M | 6" | 78 Hz | 0.82 | 6.5 L | — |
| HEX 6 5 M TW TC | 6" | 78 Hz | 0.82 | 6.5 L | — |
| HEX 6 5 M W C | 6" | 78 Hz | 0.82 | 6.5 L | — |
| C 165 | 6.5" | 58 Hz | 0.38 | 9.8 L | 199.00 EUR |
| C 165 L | 6.5" | 60 Hz | 0.6 | 13.7 L | — |
| MILLE PRO MPK165 3 | 6.5" | 70 Hz | 0.58 | 9.5 L | — |
| MILLE PRO MPK165P 3 | 6.5" | 75 Hz | 0.56 | 8 L | — |
| ML 1650.3 | 6.5" | 55 Hz | 0.33 | 9.2 L | 429.00 EUR |
| MP 165.3 | 6.5" | 53 Hz | 0.35 | 10 L | 379.00 EUR |
| PRO MP165 3 | 6.5" | 70 Hz | 0.58 | 9.5 L | — |
| PRO MP165P 3 | 6.5" | 75 Hz | 0.56 | 8 L | — |
| PRO MPX165 3 | 6.5" | 90 Hz | 0.88 | 4 L | — |
| ST_HI Energy_COAX_eng | 6.5" | 70 Hz | 0.6 | 8 L | — |
| SV 165 1 | 6.5" | 110 Hz | 0.5 | 4.7 L | — |
| SV 165 NEO | 6.5" | 110 Hz | 0.58 | 3.5 L | — |
| SX 165 NEO | 6.5" | 110 Hz | 0.64 | 4.9 L | — |
| C 165 F | 7" | 80 Hz | 0.8 | 9.4 L | — |
| Energy5 ECX 165.5 | 7" | 72 Hz | 0.58 | 12 L | — |
| LEGEND ML1650.3 | 7" | 65 Hz | 0.52 | 8.3 L | — |
| MILLE LEGEND MLK1650 3 | 7" | 65 Hz | 0.47 | 8.3 L | — |
| MILLE LEGEND MLK1653 | 7" | 65 Hz | 0.57 | 9 L | — |
| ML 1800.3 | 7" | 47 Hz | 0.35 | 11.5 L | 569.00 EUR |
| HMX 7 7 S LD G 2 | 7.5" | 60 Hz | 0.72 | 12.5 L | — |
| HMX 7 7 S LD SW 2 | 7.5" | 60 Hz | 0.72 | 12.5 L | — |
| LEGEND ML1800.3 | 7.5" | 60 Hz | 0.5 | 12.2 L | — |
| CS 200 S4 | 8" | 40 Hz | 0.52 | 13.7 L | — |
| Energy5 ES F20.5 | 8" | 52 Hz | 0.4 | 13.2 L | — |
| ML 2000 3 LEGEND | 8" | 40 Hz | 0.56 | 9.5 L | — |
| ML 2000.3 | 8" | 39 Hz | 0.37 | 18 L | 549.00 EUR |
| PRO MPX690 3 | 8" | 50 Hz | 0.43 | 24 L | — |
| SV 200 1 | 8" | 120 Hz | 0.52 | 7.5 L | — |
| SV 200 NEO | 8" | 103 Hz | 0.52 | 8.1 L | — |
| SV200L | 8" | 44 Hz | 0.33 | 29 L | — |
| SX 690 H | 8" | 65 Hz | 0.62 | 11.3 L | — |
| SX 690 NEO 1 | 8" | 65 Hz | 0.62 | 11.3 L | — |
| HMX 8 8 S LD SW 2 | 8.5" | 50 Hz | 0.58 | 29.5 L | — |
| HTX 8 M CL | 8.5" | 51 Hz | 0.78 | 26.1 L | — |
| HTX 8 M CL TW TC | 8.5" | 51 Hz | 0.78 | 26.1 L | — |
| HTX 8 M FL TW TC | 8.5" | 51 Hz | 0.78 | 26.1 L | — |
| HTX 8 M FL W C | 8.5" | 51 Hz | 0.78 | 26.1 L | — |
| MPS 250 S2 | 9.5" | 28 Hz | 0.41 | 16.3 L | — |
| CS 250 S2 | 10" | 30 Hz | 0.49 | 32 L | — |
| CS 250 S4 | 10" | 30 Hz | 0.52 | 34.5 L | — |
| DIECI3_TechSheet_DS-250_3 | 10" | 36 Hz | 0.62 | 29 L | — |
| DS25 3 | 10" | 36 Hz | 0.92 | 34 L | — |
| HMS 10 B2 LD C | 10" | 43 Hz | 0.6 | 30.5 L | — |
| HMS 10 B2 LD W | 10" | 43 Hz | 0.6 | 30.5 L | — |
| HMS 10 B4 LD C | 10" | 41 Hz | 0.71 | 37 L | — |
| HMS 10 B4 LD W | 10" | 41 Hz | 0.71 | 37 L | — |
| LEGEND ML2500.3 | 10" | 33 Hz | 0.63 | 23.5 L | — |
| ML 2500.3 | 10" | 27 Hz | 0.45 | 24 L | 549.00 EUR |
| MP 250 D4.3 | 10" | 30 Hz | 0.4 | 40 L | 499.00 EUR |
| MPS 250 S4 | 10" | 29 Hz | 0.48 | 21.2 L | — |
| PRO MP250.D2.3 | 10" | 30 Hz | 0.54 | 25 L | — |
| PRO MP250.D4.3 | 10" | 27 Hz | 0.5 | 31 L | — |
| SV250 1 | 10" | 90 Hz | 0.4 | 20 L | — |
| CS 300 S2 | 12" | 25 Hz | 0.46 | 87.2 L | — |
| CS 300 S4 | 12" | 25 Hz | 0.47 | 93.4 L | — |
| DS30 3 | 12" | 32 Hz | 0.62 | 70 L | — |
| Mille Legend ML 2000.3 | 12" | 30 Hz | 0.44 | 60 L | 799.00 EUR |
| Mille Legend ML 2500.3 | 12" | 27 Hz | 0.42 | 85 L | 899.00 EUR |
| Mille Pro MP 300 D4.3 | 12" | 28 Hz | 0.43 | 90 L | 699.00 EUR |
| MP 300 D4.3 | 12" | 28.5 Hz | 0.43 | 72 L | 599.00 EUR |
| MPS 300 S2 | 12" | 24 Hz | 0.51 | 64.9 L | — |
| MPS 300 S4 | 12" | 23 Hz | 0.42 | 62.1 L | — |
| PRO MP300.D2.3 | 12" | 23 Hz | 0.48 | 88 L | — |
| PRO MP300.D4.3 | 12" | 24 Hz | 0.42 | 74 L | — |
| S300S4 | 12" | 33 Hz | 0.6 | 82.2 L | — |
| SS 12 D2 | 12" | 36 Hz | 0.64 | 24.5 L | — |
| SS 15 D2 | 15" | 31 Hz | 0.61 | 68.8 L | — |
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