User manual FENDER 1272X

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Manual abstract: user guide FENDER 1272X

Detailed instructions for use are in the User's Guide.

[. . . ] Your sound system is far more than just a combination of dials, wires and speakers. It is an integral part of the audio chain and should be treated with special care and attention to detail. [. . . ] Higher impedance speakers will draw less power from the amplifier than lower impedance speakers will draw. At Fender ®, we recommend connecting multiple speakers in parallel for several reasons. Second, because in a series connection one speaker affects the output of the other speakers, unpredictable frequency response is a concern. Third, most speaker cabinets are already wired for parallel connections making parallel connections the most common wiring method. Below are two charts demonstrating how to calculate both parallel and series impedance. PARALLEL IMPEDANCE Zp = Cabinet B Impedance 16* 5. 3* 8 4 8 5. 3 1 1 1 1 + Z 1 Z 2 . . . Z n + + - Keep in mind, power and audio signal cables are the most common sources of sound system failure. Well made and carefully maintained cables are essential to the reliability of the entire sound system. If long speaker cables are required, it is important to ensure the cable`s gauge is sufficient to transfer all of the available amplifier power to the speakers rather than absorbing the power itself. As a rule of thumb, larger wires are better as they conduct more power to the speakers (larger wire has smaller gauge numbers). Below are two charts listing speaker wire gauges and recommendations for best results. SPEAKER WIRE GAUGE SPEAKER WIRE LENGTH 100'-UP (30. 5 m-UP) 10 12 12 14 14 16 18 18 18 50'-100' (15. 25-30. 5 m) *25'-50' (7. 60-15. 25 m) 14 *16 16 18 18 18 10'-25' (3. 05-7. 60 m) 0'-10' (0. 00-3. 05 m) A B 4 *8 16 SPEAKER IMPEDANCE [z] *Example - If the speaker wire length required is between 25-50 feet (7. 6015. 25 meters) and the speaker impedance is 8, the minimum recommended speaker wire gauge is 16. 8* 16 Cabinet A Impedance + - *Example- Cabinet A is 8 ohms. 1 1 8 + 16 SERIES IMPEDANCE 16* Cabinet B Impedance 8 4 2 18 10 6 4 20* 12 8 6 24 16 12 10 32 24 20 18 + Z s = Z + Z . . . Z 1 2 n + + - Resistance in per foot AWG Section (30. 5 cm) @ 77º F (25º C) 2 [mm ] Cross- 18 16 14 12 10 8 0. 83 1. 32 2. 10 3. 32 5. 27 8. 38 . 00651 . 00409 . 00258 . 00162 . 00102 . 00064 A B 2 4* 8 16 Cabinet A Impedance *Example- Cabinet A is 4 ohms. The total impedance when connected in series is 4 + 16 = 20 ohms. 4 1272X /1275X SPEAKER CONNECTIONS The 1/4" jacks are wired in parallel allowing any one of the jacks to be used as an input and the other as an output. This allows "daisy chaining" of multiple loudspeakers, eliminating the need for several long, cumbersome runs of speaker cable. The connections are as follows: Polarity Positive (+) Negative (-) Phone Jack Tip Sleeve SETUP SUGGESTIONS The placement of any speaker can affect its sound. [. . . ] When multiple speakers are "daisy chained" together or where longer cable runs are encountered, use a larger gauge wire. Although no harm or hazard will result, using too small a gauge of wire may cause the sound quality and level to degrade. CARPET COVERING CARE 1272X /1275X cabinets are covered in a tough, black indoor/outdoor synthetic carpet for long life and lasting good looks. [. . . ]

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