MISCO 50X90-WB08-02
Best box: 0.15 L sealed · Fc 364.9 Hz · F3 302.3 Hz
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Comparable 2.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the MISCO 50X90-WB08-02 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
- Xmax is not published, so the port size is an empirical estimate (area ≥ 12 in² per ft³ of net volume, minimum by driver size), not a displacement calculation. Check air velocity in Load Forge Studio.
Textbook Bass Reflex — not recommended (19.4 dB bass hump)
PORT BUILDABLE| Net Box Volume (Vb) | 1.5 Liters |
| Tuning Frequency (Fb) | 219.3 Hz |
| F3 (-3 dB Cutoff) | 199.5 Hz |
| F6 / F10 Extension | 189.1 Hz / 177.0 Hz |
| Port Inner Diameter ESTIMATED | Ø 5.0 cm |
| Port Physical Length | 4.6 cm |
| First Pipe Resonance | 3752.0 Hz |
| Estimated MOL @ F3 | 101.6 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 1.09 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.541; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 0.15 Liters |
| System Q (Qtc) | 1.541 (above Butterworth: Qtc cannot fall below Qts (1.09)) |
| System Resonance (Fc) | 364.9 Hz |
| F3 (-3 dB Cutoff) | 302.3 Hz |
| F6 / F10 Extension | 262.5 Hz / 219.5 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 258.0 Hz |
| Total Q (Qts) | 1.09 |
| Electrical Q (Qes) | 1.577 |
| Mechanical Q (Qms) | 3.53 |
| Equivalent Volume (Vas) | 0.1 Liters |
| Diaphragm Area (Sd) | 21.5 cm² |
| DC Resistance (Re) | 3.9 Ω |
| Efficiency Bandwidth Product (EBP) | 163.6 |
| Linear Excursion (Xmax) | N/A mm |
| Thermal Power (Pe) | 9.0 W |
| Nominal Diameter | 2.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for MISCO 50X90-WB08-02?
A simple ported box is not recommended for MISCO 50X90-WB08-02: the textbook alignment (1.5 liters tuned to 219.3 Hz) needs a 4.6 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 MISCO 50X90-WB08-02 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 0.15 liters with a Qtc of 1.541 (above Butterworth: Qtc cannot fall below Qts (1.09)), the system exhibits an F3 of 302.3 Hz.
What port dimensions should be used for MISCO 50X90-WB08-02 to avoid port chuffing?
A straight 5.0 cm port would need 4.6 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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