Peerless P830990
Best box: 18.0 L bass reflex tuned to 50.3 Hz · F3 46.7 Hz
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Comparable 6.5" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Peerless P830990 does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 18.0 Liters |
| Tuning Frequency (Fb) | 50.3 Hz |
| F3 (-3 dB Cutoff) | 46.7 Hz |
| F6 / F10 Extension | 42.1 Hz / 37.5 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 9.3 cm |
| First Pipe Resonance | 1840.0 Hz |
| Estimated MOL @ F3 | 101.9 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 7.9 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 89.9 Hz |
| F3 (-3 dB Cutoff) | 90.3 Hz |
| F6 / F10 Extension | 68.1 Hz / 51.3 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 56.0 Hz |
| Total Q (Qts) | 0.43 |
| Electrical Q (Qes) | 0.522 |
| Mechanical Q (Qms) | 2.45 |
| Equivalent Volume (Vas) | 13.5 Liters |
| Diaphragm Area (Sd) | 143.0 cm² |
| DC Resistance (Re) | 6.3 Ω |
| Efficiency Bandwidth Product (EBP) | 107.4 |
| Linear Excursion (Xmax) | 7.3 mm |
| Thermal Power (Pe) | 50.0 W |
| Nominal Diameter | 6.5" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Peerless P830990?
Load Forge's calculated alignment puts Peerless P830990 in a 18.0 liter vented enclosure tuned to 50.3 Hz, reaching an F3 cutoff of approximately 46.7 Hz.
Can Peerless P830990 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 7.9 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 90.3 Hz.
What port dimensions should be used for Peerless P830990 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 9.3 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
Embed this design card on DIYAudio, AVSForum, Reddit, or Facebook. It shows the calculated F3, MOL (when the power rating is published) and box parameters.
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