Lowther Speaker Drivers
Lowther is represented in the Load Forge catalog by 14 speaker drivers, covering 5.5" to 9". Resonance (Fs) spans 35–82 Hz and total Q (Qts) 0.22–0.28, 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
14
Diameter
5.5"–9"
Fs Range
35–82 Hz
Qts Range
0.22–0.28
Price Range
1450–2500
All Lowther Speaker Drivers — parameters & designs
| Model | Size | Fs | Qts | Vas | Price |
|---|---|---|---|---|---|
| DX55 | 5.5" | 82 Hz | 0.262 | 4.2 L | — |
| DX65 | 5.5" | 82 Hz | 0.255 | 4.3 L | — |
| PM7A | 7.5" | 45 Hz | 0.28 | 45 L | 1450.00 EUR |
| DX2 | 8" | 40 Hz | 0.24 | 59 L | 2150.00 EUR |
| DX3 | 8" | 42 Hz | 0.25 | 57 L | 2250.00 EUR |
| DX4 | 8" | 44 Hz | 0.26 | 55 L | 2350.00 EUR |
| EX2 | 8" | 39 Hz | 0.24 | 60 L | 2300.00 EUR |
| EX3 | 8" | 41 Hz | 0.25 | 58 L | 2400.00 EUR |
| PM6A | 8" | 38 Hz | 0.24 | 58 L | 1850.00 EUR |
| PM6C | 8" | 40 Hz | 0.26 | 56 L | 1950.00 EUR |
| EX4 | 8.5" | 43 Hz | 0.26 | 56 L | 2500.00 EUR |
| PM4A | 8.5" | 36 Hz | 0.23 | 62 L | 2200.00 EUR |
| PM5A | 8.5" | 42 Hz | 0.25 | 55 L | 2000.00 EUR |
| PM2A | 9" | 35 Hz | 0.22 | 65 L | 2100.00 EUR |
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