Stereo Integrity M350 Carbon Midrange
Best box: 0.05 L sealed · Fc 284.1 Hz · F3 300.5 Hz
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Comparable 3.5" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Stereo Integrity M350 Carbon Midrange does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Textbook Bass Reflex — not recommended (18.5 dB bass hump)
PORT BUILDABLE| Net Box Volume (Vb) | 1.5 Liters |
| Tuning Frequency (Fb) | 201.7 Hz |
| F3 (-3 dB Cutoff) | 190.4 Hz |
| F6 / F10 Extension | 182.1 Hz / 170.7 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 6.1 cm |
| First Pipe Resonance | 2834.0 Hz |
| Estimated MOL @ F3 | 119.2 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 0.05 Liters |
| System Q (Qtc) | 0.503 (below Butterworth) |
| System Resonance (Fc) | 284.1 Hz |
| F3 (-3 dB Cutoff) | 300.5 Hz |
| F6 / F10 Extension | 238.6 Hz / 182.8 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 102.6 Hz |
| Total Q (Qts) | 0.18 |
| Electrical Q (Qes) | 0.219 |
| Mechanical Q (Qms) | 1.02 |
| Equivalent Volume (Vas) | 0.3 Liters |
| Diaphragm Area (Sd) | 31.2 cm² |
| DC Resistance (Re) | 3.0 Ω |
| Efficiency Bandwidth Product (EBP) | 469.4 |
| Linear Excursion (Xmax) | 4.0 mm |
| Thermal Power (Pe) | N/A W |
| Nominal Diameter | 3.5" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Stereo Integrity M350 Carbon Midrange?
A simple ported box is not recommended for Stereo Integrity M350 Carbon Midrange: the textbook alignment (1.5 liters tuned to 201.7 Hz) needs a 6.1 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 Stereo Integrity M350 Carbon Midrange be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 0.05 liters with a Qtc of 0.503 (below Butterworth), the system exhibits an F3 of 300.5 Hz.
What port dimensions should be used for Stereo Integrity M350 Carbon Midrange to avoid port chuffing?
A straight 5.0 cm port would need 6.1 cm of length, which does not fit a practical cabinet. Use a passive radiator or a folded/3D duct instead of a straight tube.
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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