User manual AUDIOVOX AQUATRONICS MS250

[. . . ] This warranty does not extend to the elimination of externally generated static or noise, to the correction of antenna problems, to costs incurred for removal or reinstallation of the product, or to damage to any tapes, speakers, accessories, This warranty does not apply to any product or part thereof which , in the opinion of the company, has been damaged through alteration, improper installation, mishandling , misuse, neglect, or accident, THE EXTENT OF THE COMPANY'S LIABILITY UNDER THIS WARRANTY IS LIMITED TO THE REPAIR OR REPLACEMENT PROVIDED ABOVE, AND , IN NO EVENT, SHALL THE COMPANY'S LIABILITY EXCEED THE PURCHASE PRICE PAID BY THE PURCHASER FOR THE PRODUCT. This warranty is in lieu of all other express warranties or liabilities. [. . . ] Noise may result and the line fuse may fail Ignition systems Unwanted noise generated from ignition systems used to be a big problem. However, with more sophisticated filtering circuits designed into audio/video products, these problems are not as wide spread Changes in wire harnessing also has contributed to the decline of application problems. Use the same ground point for all related products. This will greatly reduce the potential for unwanted noise. AM ANTENNA TRIMMER ADJUSTMENT The antenna trimmer can be accessed through the small hole behind the cassette door (see diagram below). Tune radio to a weak station between 1200 and 1400 KHz AM ( If you cannot find a weak station in this range, tune to any other strong station, and adjust tuning slightly off station). Adjust trimmer for maximum volume. FRONT VIEW OF RADIO ANTENNA TRIMMER (NOTE: OPEN CASSETTE DOOR TO SEE THE ADJUSTMENT SCREW) SPECIFICATIONS 7''(W) x 2''(H) x 6-5/8''(D) 178mm x 50mm x 150mm 12VDC, Negative Ground 50Watts Max . Stereo Power Floating Ground type designed for 4 speakers use. May also be used with 2 speakers. Output Impedance: Compatible with 4 or 8 ohm speakers. Tuning Range: (AM)530-1710KHz (FM)88-108MHz Sensitivity: (AM) less than 25uV (FM) less than 5uV FM Stereo Separation: More than 23 dB Frequency Response: 50-10000Hz Wow & Flutter: Less than 0. 3% Size: Operating Voltage: Output Power: Output Wiring: CARE & MAINTENANCE Cassette Always check that the tape is tightly wound inside the take-up spool on the cassette. If the tape is loose, wind it with a six - sided pencil. Never use C-120 (120 minute) cassettes in this player. Never use cassette player when vehicle temperature is near or below freezing. Cleaning of Tape Head & Capstan Since tapes contain oxides, you will find a black residue builds up on the tape head and drive capstan ( inside cassette door ). These residues should be cleaned after 50-100 hours of accumulated tape operation . You can use a cassette cleaning cartridge available where ever stereos are sold. De-Magnetizing The movement of the magnetic tape head and metal parts cause a magnetic field to develop. We recommend you have the tape player demagnetized at least twice annually. You can purchase an inexpensive tape head demagnetizing tool to do this yourself. [. . . ] The metal body reflects the signal interference generated by the vehicle's electrical system while it also provides the ground for the antenna lead shield. All this is necessary in order to maintain a good signal, especially AM. [. . . ]