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HiFonics ZST8D2 — specifications and enclosures
HiFonics ZST8D2: T/S parameters, mounting dimensions and manufacturer enclosure recommendations. Read the original PDF and load the driver into the 3D designer.
The sheet lists resistance separately for each voice coil without explicitly identifying T/S wiring. Re and Le are not imported into the electrical simulation until wiring is verified.
Manufacturer enclosure recommendations
Manufacturer recommendationBass-reflex 20.0 L
Tuning Fb: 39.0 Hz.
Manufacturer port: shape: round, diameter: 70.0 mm, length: 310.0 mm, count: 1.
The published volume is not confirmed as net air volume. Check the definition in the manual.
Reference recommendation: the source does not establish net air volume after occupied volumes are deducted. Confirm before applying.
Documentation only — check the limitations before use.
PDF · page 1 Manufacturer recommendationSealed 9.0 L
The published volume is not confirmed as net air volume. Check the definition in the manual.
Reference recommendation: the source does not establish net air volume after occupied volumes are deducted. Confirm before applying. Endpoint of a published volume range.
Documentation only — check the limitations before use.
PDF · page 1 Manufacturer recommendationSealed 15.0 L
The published volume is not confirmed as net air volume. Check the definition in the manual.
Reference recommendation: the source does not establish net air volume after occupied volumes are deducted. Confirm before applying. Endpoint of a published volume range.
Documentation only — check the limitations before use.
PDF · page 1 Calculator parameters
| Fs | 37.4 Hz |
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| Vas | 10.6 L |
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| Qes | 0.6 |
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| Qms | 7.04 |
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| Re | Not provided / unverified |
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| Sd | 214.0 cm² |
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| Le | Not provided / unverified |
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| One-way linear Xmax | 10.0 mm |
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| Frame diameter | 21.4 cm |
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| Mounting cutout | 18.2 cm |
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| Mounting depth | 7.8 cm |
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Additional manufacturer specifications
| Published Qts | 0.56 |
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| DC resistance per coils | 2 x 1,8 Ω |
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| Published inductance (connection unverified) | 2,18 mH |
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| RMS power | 250 W |
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| Nominal impedance | 2 x 2 Ohms |
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| Moving mass | 110 g |
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| Force factor | 6,6 N/A |
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Data is for one subwoofer. Manufacturer recommendations are separate from CarBoxLab calculations. Net air volume excludes the driver, port and bracing; design dimensions are external. Loading a recommendation transfers the verified volume and tuning; confirm port geometry and construction separately.
Source documentation
Manufacturer technical documentation
Manufacturer owner’s manual
Original manufacturer documents are not translated. Data reviewed: 2026-10-31.