Visaton G 20 SC - 8 Ohm
Best box: 0.001 L sealed · Fc 2672.9 Hz · F3 3152.2 Hz
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Comparable 1.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Visaton G 20 SC - 8 Ohm 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.
- Straight vent would be -13.3 cm long: not physically buildable as a simple tube. Use a passive radiator, a folded slot port or model a 3D folded duct in Load Forge Studio.
Textbook Bass Reflex — not recommended
PORT NOT BUILDABLE| Net Box Volume (Vb) | 1.5 Liters |
| Tuning Frequency (Fb) | 2496.1 Hz |
| F3 (-3 dB Cutoff) | 2368.8 Hz |
| F6 / F10 Extension | 2282.2 Hz / 2160.5 Hz |
| Port Inner Diameter ESTIMATED | Ø 20.0 cm |
| Port Physical Length | No real tube length at this tuning — use a passive radiator |
| First Pipe Resonance | 0.0 Hz |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 0.28 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 0.396; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 0.001 Liters |
| System Q (Qtc) | 0.396 (below Butterworth) |
| System Resonance (Fc) | 2672.9 Hz |
| F3 (-3 dB Cutoff) | 3152.2 Hz |
| F6 / F10 Extension | 2229.4 Hz / 1528.4 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 1890.0 Hz |
| Total Q (Qts) | 0.28 |
| Electrical Q (Qes) | 1.26 |
| Mechanical Q (Qms) | 0.36 |
| Equivalent Volume (Vas) | 0.0 Liters |
| Diaphragm Area (Sd) | 4.0 cm² |
| DC Resistance (Re) | 4.8 Ω |
| Efficiency Bandwidth Product (EBP) | 1500.0 |
| Linear Excursion (Xmax) | N/A mm |
| Thermal Power (Pe) | N/A W |
| Nominal Diameter | 1.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Visaton G 20 SC - 8 Ohm?
A simple ported box is not recommended for Visaton G 20 SC - 8 Ohm: the textbook alignment (1.5 liters tuned to 2496.1 Hz) needs a -13.3 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 Visaton G 20 SC - 8 Ohm be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 0.001 liters with a Qtc of 0.396 (below Butterworth), the system exhibits an F3 of 3152.2 Hz.
What port dimensions should be used for Visaton G 20 SC - 8 Ohm to avoid port chuffing?
A straight 20.0 cm port would need -13.3 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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