sensitivity & impedance curves
Input: 2.83 volts measured at 1 Meter
0 deg response
30 deg response
60 deg response
impedance
Austin 1250
The Austin 1250 by ToneSpeak blends vintage American roots with modern precision, delivering a speaker that is full, punchy, and exceptionally balanced. With tailored mids that enhance articulation, open and airy highs, and tight, responsive lows, this speaker provides clarity and musicality in every note.
Designed for versatility, the Austin 1250 features a felted paper cone and surround for smooth tonal transitions, a 50 oz. ferrite magnet for strong projection, and a 1.75-inch copper voice coil with a Kraft paper former for warmth and definition. Optimized for the Deluxe Reverb but suitable for any amp where pure American tone is desired.
Key Features:
- 12-inch (305 mm), 50-Watt power handling at 8 Ω impedance
- 100 dB SPL sensitivity for excellent projection
- Felted paper cone & surround for smooth response
- 1.75-inch copper voice coil with Kraft paper former for warmth
- 50 oz. ferrite magnet for punchy and dynamic sound
For players who demand balance, articulation, and warmth, the Austin 1250 delivers classic American tone with modern refinement.
sensitivity & impedance curves
Input: 2.83 volts measured at 1 Meter
0 deg response
30 deg response
60 deg response
impedance
Where to buy
Canada
germany
japan
general specifications
| parameter | value |
|---|---|
| Nominal Diameter (in & mm) | 12" (305 mm) |
| Nominal Impedance (Z) (Ω) | 8 |
| Rated Power IEC268-5 (W) | 50 |
| Program Power (W) | 100 |
| Magnet Weight (g) | 1417 |
| Voice Coil Diameter (mm) | 44 |
| Sensitivity (dB SPL) | 100 |
| Frequency Range (Hz) | 80 - 5000 |
small signal parameters
| parameter | value |
|---|---|
| Resonant Frequency (Fs) (Hz) +/- 15% | 90 |
| DC Resistance (Re) (Ω) | 7.1 |
| Voice Coil Inductance (Le) (mH) | 0.39 |
| Moving Mass (Mms) (gm) | 28.2 |
| Suspension Compliance (Cms) (mm/N) | 0.1 |
| Motor Force Factor (BL) (T•M) | 14.3 |
| Mechanical Q Factor (Qms) | 18.41 |
| Electrical Q Factor (Qes) | 0.56 |
| Total Q Factor (Qts) | 0.54 |
| Compliance Equivalent Volume (Vas) (L) | 46.1 |
| Surface Area of Diaphragm (Sd) (cm²) | 539.1 |
material description
| parameter | value |
|---|---|
| Basket Type | Stamped steel with black powder coat painting |
| Magnet Material | Ferrite |
| Cone Body Material | Felted paper |
| Cone Surround Material | Felted paper with damping edge treat |
| Dust Cap Material | Open cloth |
| Spider Material | Cotton |
| Voice Coil Wire Material | Copper |
| Voice Coil Former Material | Kraft paper former |
| Voice Coil Winding Style | Single layer |