Speaker Wire Length
| Speaker Wire Gage | |||||
| 8 | 10 | 12 | 14 |
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| 10 | 12 | 14 | 16 |
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| 12 | 14 | *16 | 18 |
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| 14 | 16 | 18 | 18 |
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| 16 | 18 | 18 | 18 |
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| 2Ω 4Ω *8Ω 16Ω | ||||
| Speaker Impedance | |||||
FIGURE 2
*Example- The length of speaker wire required is between 25 and 50 feet and the speaker impedance is 8 ohms. The minimum recommended gauge speaker wire is 16 gauge.
Cabinet B Impedance
Z = 1 | 1 | 1 |
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| FIGURE 3 |
| Z |
| = Z + Z ...Z |
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1 |
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p | Z + Z ...Z |
| CHART A |
| CHART B |
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| 1 | 2 | n |
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| 1 | 2 | n |
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16Ω 1.8 3.2 5.3 | 8 |
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| Series |
| 16Ω* 18 | 20* | 24 | 32 | |||||||
| Impedance |
| Impedance |
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8Ω 1.6 2.7 | 4 | 5.3 |
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| 8Ω 10 | 12 | 16 | 24 | |||
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4Ω* 1.3 | 2 | 2.7* 3.2 |
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| B |
| 4Ω | 6 | 8 | 12 | 20 | |||||
| - A | - | B |
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2Ω 4Ω 8Ω* 16Ω | + |
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| Cabinet |
| 2Ω | 2Ω 4Ω* 8Ω 16Ω | ||||||||||
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2Ω 1 | 1.3 1.6 1.8 |
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| B |
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| 4 | 6 | 10 | 18 | |||||
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Cabinet A Impedance |
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| Cabinet A Impedance | |||||||
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*Example- Cabinet A is 8 ohms. | *Example- Cabinet A is 4 | ||||
Cabinet B is 4 ohms. The total | ohms. Cabinet B is 16 ohms. | ||||
impedance when connected in | The total impedance when | ||||
parallel is = | 1 = 2.7 ohms | connected in series is 4 + 16 | |||
| 1 | + | 1 |
| = 20 ohms. |
8 | 4 |
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FIGURE 4
SWITCHCRAFT
S3FM
PIN 1
PIN 2
PIN 3
FEMALE
(to microphone)
22K
680
OHM
22K
30dB PAD
150
OHM
PIN 1
PIN 2
PIN 3
MALE
(to mixer)
ALL RESITORS ARE 5%
1/4 WATT
