Instruction/ maintenance manual of the product S408 Alvarez
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1 S408 REPAIR MANUAL S408 REPAIR MANUAL.
2 These instructions are intended to help restore any ailing S408 Passive Loudspeaker back to factory working conditions. They show how to remove and replace the drivers. Please contact Mackie Technical Support (1-800-898-3211) to receive a Service Request Number and Order Number for parts needed for this restoration.
3 Top left woofer replacement: 1 1 Six screws need to be removed from each side of the front of the grill (twelve screws total) using the phillips head screwdriver. This grill has a tendency to want to “pop” off, so please be sure to hold it in place with one hand or arm while removing the screws with your free hand.
4 3 3 Carefully begin to remove the woofer. Caution: The woofer is approximately 8 pounds with the weight unevenly distributed. Top left woofer replacement continued: 4 4 The positive (blue and black) and negative (solid black) cables are still attached to the woofer terminals.
5 Top right woofer replacement: 2 2 Eight screws need to be removed from the woofer using the phillips head screwdriver. Once the screws are removed, the woofer may be loosened by prying a fl at head.
6 3 3 Carefully begin to remove the woofer. Caution: The woofer is approximately 8 pounds with the weight unevenly distributed. Top right woofer replacement continued: 4 4 The positive (blue and black) and negative (solid black) cables are still attached to the woofer terminals.
7 Bottom left woofer replacement: 2 2 Eight screws need to be removed from the woofer using the phillips head screwdriver. Once the screws are removed, the woofer may be loosened by prying a fl at he.
8 3 3 Carefully begin to remove the woofer. Caution: The woofer is approximately 8 pounds with the weight unevenly distributed. Bottom left woofer replacement continued: 4 4 The positive (blue and black) and negative (solid black) cables are still attached to the woofer terminals.
9 Bottom right woofer replacement: 2 2 Eight screws need to be removed from the woofer using the phillips head screwdriver. Once the screws are removed, the woofer may be loosened by prying a fl at h.
10 3 3 Carefully begin to remove the woofer. Caution: The woofer is approximately 8 pounds with the weight unevenly distributed. Bottom right woofer replacement continued: 4 4 The positive (blue and black) and negative (solid black) cables are still attached to the woofer terminals.
11 High Frequency Driver replacement: 8 8 1 1 2 2 3 3 4 4 5 5 6 6 7 7 9 9 10 10 11 11 12 12 2 2 Twelve screws and fl at washers need to be removed from the horn assembly using the phillips head screwdriver.
12 3 3 Carefully begin to remove the entire horn assembly (with the high frequency driver still attached). Caution: The horn weighs about 8 pounds, and the weight is unevenly distributed.
13 High Frequency Driver replacement continued: 6 6 Four bolts and eight washers may be removed from the driver using the 8mm combination wrench. Turn counter- clockwise to loosen and remove, clockwise to tighten. The other three are located around the horn assembly.
14 3 3 The horn assembly is shown above with the high frequency driver circled. Four screws need to be removed from the driver using the 3mm allen wrench. 4 4 Keep the four screws in a safe place. 5 5 The diaphragm and plate adapter are easily removed from the horn assembly.
15 7 7 This is what the plate adapter (left) and diaphragm (right) both look like. Place the new diaphragm (part # coming soon) where the old one was. Follow the same steps as above, but backwards 6 to 1. Power up the S408 and the new diaphragm should now be pumping out those highs again.
16 Input assembly replacement: 1 1 Eight screws need to be removed from the input assembly (located on the rear of the cabinet) using the phillips head screwdriver. Once the screws are removed, the input assembly may be loosened by prying a fl at head screwdriver in between it and the cabinet.
17 3 3 Two cables need to be removed from the input assembly PCB (as shown on the left and above): (1) the solid black cable attaches to the negative terminal (connection J4). This is for the input jack, and (2) the grey and black cable attaches to the positive terminal (connection J3).
18 Input assembly replacement continued: 4 4 Place the new input assembly (part #0012048) where the old one was. Follow the same steps as above, but backwards 3 to 1. Remove the serial number from the faulty input assembly (as shown in the picture above) and place on the new input assembly.
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An important point after buying a device Alvarez S408 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Alvarez S408 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Alvarez S408 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Alvarez S408 you will learn all the available features of the product, as well as information on its operation. The information that you get Alvarez S408 will certainly help you make a decision on the purchase.
If you already are a holder of Alvarez S408, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Alvarez S408.
However, one of the most important roles played by the user manual is to help in solving problems with Alvarez S408. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Alvarez S408 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
