SigmaX by Elektra Mobile Audio is an entry level line of car audio products with the best value to performance benchmark. This entry level line consists of amplifiers, speakers, tweeters and subwoofers to get the best bang for your buck.
SigmaX 800.5 Five Channel Amplifier
Features
The SigmaX 800.5 5 channel amplifier is solid performing amplifier to power an entire system in one chassis. The SigmaX 800.5 outputs 80W RMS x 4 into 4 ohms, 120W RMS x 2 into 2 ohms, plus 320W RMS x1 into 2 ohms for the subwoofer channel.
Amplifier Specifications
| 800.5 | |
| Dimensions LxWxH (inches) | 13.7×8.7×2 |
| 4Ω Power @ 13.8V <1%THD | 80Wx4 + 170Wx1 |
| 2Ω Power @ 13.8V <1%THD | 120Wx4 + 320Wx1 |
| 1Ω Power @ 13.8V <1%THD | Not stable |
| 4Ω Bridged @ 13.8V <1%THD | 210Wx2 |
| Frequency Response (Hz) | 20-20k |
| HPF (Hz) (Front & Rear) | 20-8k |
| LPF Filter (Hz) (Sub) | 40-250 |
| Bass Boost | 0-12dB |
| SNR (dB) | 95 |
| Minimum Load (Ω) | 2 |
| Thermal Protection | Yes (80°C) |
| Fuse Rating (A) | 80 |
Fuses must be installed within 18” of the battery and amplifiers.
Product Manual
SigmaX 50.4 Four Channel Amplifier
Features
The SigmaX 50.4 is Elektra’s entry level car audio amplifier. The X50.4 is a 4 channel class AB amplifier that outputs 50W RMS x 4 into 4 ohms.
Amplifier Specifications
| X50.4 | |
| Dimensions LxWxH (inches) | 13.7×8.7×2 |
| 4Ω Power @ 13.8V <1%THD | 50Wx4 |
| 2Ω Power @ 13.8V <1%THD | 100Wx4 |
| 1Ω Power @ 13.8V <1%THD | Not stable |
| 4Ω Bridged @ 13.8V <1%THD | 200Wx2 |
| Frequency Response (Hz) | 20-20k |
| LPF (Hz) (Rear) | 50-250 |
| HPF/Subsonic Filter (Hz) | 120-3k |
| SNR (dB) | >90 |
| Efficiency | >70% |
| Minimum Load (Ω) | 2 |
| Thermal Protection | Yes (80°C) |
| Fuse Rating (A) | 50 |
Fuses must be installed within 18” of the battery and amplifiers.
SigmaX 6.5″ Midbass Driver
The SigmaX 6.5″ midbass is a slim mount 6.5″ driver available in both 4 ohms and 8 ohms with a 1″ voice coil. It handles 50W RMS and has a working frequency range from 100Hz to 6kHz.
Frequency Response
SigmaX HF1 1″ Tweeter
The SigmaX HF1 is a 50W RMS compact 1″ tweeter pair that can be mounted in four different ways: surface, flush, angle and adjustable angle. It has a built in crossover and can be mounted almost anywhere.
SigmaX Subwoofers
Features
SigmaX subwoofers are available in 8″ and 10″ sizes. The SigmaX 8 Subwoofer is a 200W 8″ Subwoofer available in dual 2 and dual 4 ohm configurations. The SigmaX 10 Subwoofer is a 250W 10″ Subwoofer available in dual 2 and dual 4 ohm configurations.
Specifications
| SigmaX 8 | SigmaX 10 | |
| Overall Diameter (inches) | 8.5 | 10.25 |
| Mounting Diameter (inches) | 7.25 | 9.25 |
| Mounting Depth (inches) | 4.75 | 5.25 |
| Cone Material | Non-Pressed Paper | Non-Pressed Paper |
| Dust Cap | Poly | Poly |
| Frequency Range (Hz) | 35-100 | 32-100 |
| Voice Coil Diameter | 2” | 2″ |
| Net Weight (lbs) | 8 | 10 |
T/S Parameters
| SigmaX 8 | SigmaX 10 | |
| Fs (Hz) | 45.2 | 42.6 |
| Qms | 3.215 | 3.518 |
| Qes | 0.426 | 0.514 |
| Qts | 0.376 | 0.448 |
| Vas (Litres) | 9.0 | 18.45 |
| Xmax (mm) | 9 | 9 |
| SPL 1W/m (db) | 84.8 | 86.3 |
| Continuous Power (W) | 200 | 250 |
| Re (Ω) | 4.0/8.0 | 4.0/8.0 |
| Le (mH) | 7.13 | 7.13 |
| BL | 14.53 | 15.418 |
