GRS 10PR-8 10" Poly Cone Rubber Surround Woofer
Best box: 57.2 L sealed · Fc 56.6 Hz · F3 46.3 Hz
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Comparable 10.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the GRS 10PR-8 10" Poly Cone Rubber Surround Woofer does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
⚠️ Engineering Notice for Builders
- Limited linear excursion (Xmax: 3.0 mm); set a high-pass subsonic filter at 25–30 Hz when driven with high power.
Textbook Bass Reflex — not recommended (3.9 dB bass hump)
PORT BUILDABLE| Net Box Volume (Vb) | 45.8 Liters |
| Tuning Frequency (Fb) | 34.0 Hz |
| F3 (-3 dB Cutoff) | 51.4 Hz |
| F6 / F10 Extension | 44.2 Hz / 35.3 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 7.5 cm |
| First Pipe Resonance | 2281.0 Hz |
| Estimated MOL @ F3 | 105.0 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 0.97 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.372; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 57.2 Liters |
| System Q (Qtc) | 1.372 (above Butterworth: Qtc cannot fall below Qts (0.97)) |
| System Resonance (Fc) | 56.6 Hz |
| F3 (-3 dB Cutoff) | 46.3 Hz |
| F6 / F10 Extension | 39.6 Hz / 32.8 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 40.0 Hz |
| Total Q (Qts) | 0.97 |
| Electrical Q (Qes) | 1.317 |
| Mechanical Q (Qms) | 3.68 |
| Equivalent Volume (Vas) | 57.2 Liters |
| Diaphragm Area (Sd) | 345.1 cm² |
| DC Resistance (Re) | 7.3 Ω |
| Efficiency Bandwidth Product (EBP) | 30.4 |
| Linear Excursion (Xmax) | 3.0 mm |
| Thermal Power (Pe) | 80.0 W |
| Nominal Diameter | 10.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for GRS 10PR-8 10" Poly Cone Rubber Surround Woofer?
A simple ported box is not recommended for GRS 10PR-8 10" Poly Cone Rubber Surround Woofer: the textbook alignment (45.8 liters tuned to 34.0 Hz) needs a 7.5 cm port, and no nearby retune stays buildable without a bass hump. A sealed box, a passive radiator or a folded duct is the practical choice.
Can GRS 10PR-8 10" Poly Cone Rubber Surround Woofer be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 57.2 liters with a Qtc of 1.372 (above Butterworth: Qtc cannot fall below Qts (0.97)), the system exhibits an F3 of 46.3 Hz.
What port dimensions should be used for GRS 10PR-8 10" Poly Cone Rubber Surround Woofer to avoid port chuffing?
A straight 5.0 cm port would need 7.5 cm of length, which does not fit a practical cabinet. Use a passive radiator or a folded/3D duct instead of a straight tube.
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