Troubleshooting Guide
What might appear to be a malfunction in your unit may just be the result of slight misoperation or miswiring. Before calling service, first check the following table for possible problems.
PROBLEM | POSSIBLE CAUSE | SOLUTION |
No sound. | • Input (or output) cables are |
(No sound from one side.) | disconnected. |
| • The connection of the sigma |
| servo terminals is wrong. |
| • Protection circuit may be |
| activated. |
| • The fuse may be blown |
| because the volume was too |
| high. |
•Connect the input (or output) cables.
•Check the connection referring to "Sigma servo feed back".
•Check connections by referring to "Power indicator".
•Replace the fuse with a new fuse and use a lower volume.
The output level is too small (or too large).
The input sensitivity adjusting | Adjust the control correctly |
control is not set to the correct | referring to "Controls". |
position. |
|
The sound quality is bad. (The sound is distorted.)
•The speakers cable are connected with wrong + / - polarity.
•A speaker cable is pinched by a screw in the car body.
•The switches may be set improperly.
•Connect them properly checking the + / - of the terminals and cables well.
•Connect the speaker cable again so that it is not pinched by anything.
•Set switches properly by referring to "Controls".
Specifications
Specifications subject to change without notice.
Audio Section
Max Power Output (2 Ω )................................................................................................ | 400 W ⋅ 1 |
Rated Power Output (4 Ω ) |
|
(4 Ω ).................................................................................... | 200 W ⋅ 1 (DIN45324, +B=14.4 V) |
(2 Ω ) ........................................................................................ | 300 W ⋅ 1 (100 Hz, 0.8 % THD) |
Frequency Response (+0, | 5 Hz ~ 200 Hz |
Total Harmonic Distortion (Rated power)# ............................................................ | 0.01 % (100 Hz) |
Sensitivity (MAX) (rated output) .............................................................................................. | 0.2 V |
Sensitivity (MIN) (rated output) .............................................................................................. | 5.0 V |
Signal to Noise Ratio............................................................................................................ | 100 dB |
Input Impedance.................................................................................................................... | 10 kΩ |
Damping Factor.............................................................................. | More than 9900 (at ∑ connect) |
Low Pass Filter Frequency (24 dB/oct.) ...................................................... | 50 ~ 200 Hz (variable) |
Infrasonic Filter Frequency (24 dB/oct.).......................................................................... | 15 / 25 Hz |
| # Sensitivity = Mini. , Through LPF (30 kHz) |
General
Operating Voltage .............................................................................. | 14.4 V (11 ~ 16 V allowable) |
Current Consumption (4 Ω , 14.4 V, 10% THD)........................................................................ | 28 A |
Dimensions (W ⋅ H ⋅ D) ................................................................................ | 290 ⋅ 52 ⋅ 250 mm |
Weight .................................................................................................................................. | 3.1 kg |
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