ULTRA SERIES
ULTRA 5.25" Coaxial Speaker Driver (Aramid Fiber Cone)
Model SV-135C-44-100-0055-03
55–20kHzFrequency Range
88dBSensitivity
4ΩImpedance
50WRated Power
Features
- 5.25-inch Aramid fiber woofer
- 1.25-inch Silk Dome Diaphragm
- Ferrite External magnetic circuit
- Sovox ISP patented coaxial loudspeaker
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SV-135C-44-100-0055-03
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01General Specification
| Unit | LF | HF | |
|---|---|---|---|
| Diameter | mm | ∅148 | ∅29.7 |
| Nominal impedance | Ω | 4 | 4 |
| Program power [1] | W | 50 | 10 |
| AES power rating [2] | W | 30 | 5 |
| Sensitivity [3] | dB | 88 | 87 |
| Frequency range | Hz | F0–20k | |
| Voice coil diameter | inch | 1.2 | 1.2 |
| Frame material | — | Iron basket | |
| Magnet material | — | Ferrite | |
| Recommended crossover [4] | Hz | 2k | |
| Xmax [5] | mm | 2 | — |
| Driver displacement enclosure | L | 0.611 | — |
02LF T/S Parameters [6]
| DC resistance | Re (Ω) | 3.2 |
| Resonance frequency | Fs (Hz) | 56 |
| Moving mass | Mms (g) | 9.6 |
| Compliance | Cms (mm/N) | 0.89 |
| Mechanical losses | Rms (kg/s) | 1.0 |
| Force factor | BL (N/A) | 5.6 |
| Mechanical Q-factor | Qms | 3.2 |
| Electrical Q-factor | Qes | 0.35 |
| Total Q-factor | Qts | 0.32 |
| Equivalent air volume | Vas (L) | 11.6509 |
| Voice coil Inductance | Le (mH) | 0.28 |
| Diaphragm area | Sd (cm²) | 100.29 |
| Reference efficiency | η0 (%) | 0.58 |
03Shipping Information
| Net weight | kg | 1.35 |
| Unit size | mm | ∅148×H80 |
| Multipack weight | kg | — |
04SPL & Impedance Curve
05Dimensions mm
Test Notes
- Program power is defined as 3 dB greater than AES power.
- Tested in free air for two hours using a continuous band-limited pink noise signal as per AES 2-1984 Rev. 2003.
- Measured on axis at 2 V, 1 m; SPL is the average at 200, 500, 800 and 1000 Hz.
- High-pass filter with slope 12 dB/oct. or higher.
- Xmax = (Hvc − Hg) / 2, where Hvc is voice-coil height and Hg the gap height.
- Thiele-Small parameters measured after preconditioning (20–22 °C, 50% RH, 2 h) by Klippel LSI. All specifications subject to change without notice.