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15

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SYMPTOM   

 

CHECK POINT 

 

 

 

CURE  

 

 

 

 

 

No sound

 

 

 

Is the amplifier power LED illuminated?   

1. Check fuses in amplifier 

 

 

 

 

 

 

 

 

 

 

2. Check turn-on lead 

 

 

 

 

 

 

 

 

 

 

3. Check signal leads 

 

 

 

 

 

 

 

 

 

 

4. Check gain control 

 

 

 

 

 

 

 

 

 

 

5. Check source unit volume 

 

 

 

 

 

 

 

 

 

 

6. Clean contacts on fuse holders 

 

 

 

 

 

 

 

 

 

Is the amplifier overload LED illuminated? 

Check speaker for short or 

 

 

 

 

 

 

 

 

 

 

amplifier for overheating 

 

 

 

 

 

Check impedance with Ohm meter 

 

If no reading, replace speaker 

 

 

 

 

 

Check that the speaker moves freely   

If speaker won’t move, replace speaker 

 

 

 

 

Speaker is making a

    

Check that speaker is secured properly   

Tighten mounting screws 

rattling noise

   

 

and tightened with screws 

 

 

 

 

 

Check enclosure construction   

 

Check that the enclosure is debris free 

 

 

 

 

 

Check speaker polarity   

 

 

Correct polarity 

 

 

 

 

No sound from one coil

 

 

Check speaker leads   

 

1. Inspect for short circuits 

 

 

 

 

 

 

 

2. Check for open connections 

 

 

 

 

 

 

 

 

 

 

 

Reverse left and right speaker leads to  

 

 

 

 

 

 

 

 

 

 

determine if it is occurring before the  

 

 

 

 

 

 

 

 

 

 

speaker 

 

 

 

 

Speaker is distorting at high

  Check speaker load impedance capabilities 

Confirm that the speaker load   

volume levels

   

 

for the amplifier  

 

 

 

impedance recommendations are 

 

 

 

 

 

 

 

 

 

 

followed.  Check the  wiring    

 

 

 

 

 

 

 

 

 

 

configuration of the speakers.  

 

 

 

 

 

 

 

 

 

 

(To verify proper load impedance, use  

 

 

 

 

 

 

 

 

 

 

an OHM meter to measure the total load 

 

 

 

 

 

 

 

 

 

 

for each channel of the amplifier. 

 

 

 

 

 

Verify that amplifier and/or crossover settings  Select low-pass setting 

 

 

 

 

are correct 

 

Содержание MAYHEM 900 Series

Страница 1: ...Owner s Manual PSW912 PSW915 ALPHASONIKR...

Страница 2: ...chnology quality and value Our electronics feature audiophile parts and circuit topology designed to let the full musical experience come through loud and clear Our loudspeakers employ the latest high...

Страница 3: ...T A B L E O F C O N T E N T S Introduction 3 Features and Specifications 4 Building an Enclosure 5 10 Subwoofer Parameters 11 Wiring Diagrams 12 14 Troubleshooting 15 Warning Disclaimer 16 Notes 17 1...

Страница 4: ...yment We recommend having an Authorized Alphasonik Dealer install your new product for optimal performance and to take advantage of our warranty program Before installing your new product please read...

Страница 5: ...BWOOFER Proprietary Cast Aluminum Alloy Machine Cut Alpha Basket Proprietary Cooling Rings for Motor Assembly Patented Kevlar Reinforced Composite Balanced Laminated Cone High Tensile Strength Two Lay...

Страница 6: ...red to other woodworking projects When building a custom subwoofer box you will want to use minimal MDF medium density fiberboard TOOLS REQUIRED TO BUILD AN ENCLOSURE Safety goggles Table saw or circu...

Страница 7: ...When using high power and small enclosures the woofer is not in an ideal cooling environment Less low bass as compared to a properly tuned vented enclosure above the ported tuning frequency Advantages...

Страница 8: ...__________ Below are illustrated versions of all the steps that you should take FOR EXAMPLE ONLY Step One Step Three Step Two Side View 13 5 19 5 13 5 13 5 1 5 12 13 5 1 5 12 The wood that we are usin...

Страница 9: ...s Top of Depth Bottom of Depth ________ 2 _________ Height x Width x Depth 1728 _____________________ Step One Step Three Step Two Side View 13 5 19 5 13 5 13 5 1 5 12 The wood that we are using is 0...

Страница 10: ...Step Three Step Two Side View 15 23 13 5 23 1 5 21 5 15 1 5 13 5 The wood that we are using is 0 75 thick The 1 5 that you see in the formula is the thickness of the wood To calculate the thickness of...

Страница 11: ...used then use the square root function of your calculator to get the interior dimensions of an equivalent suare port The length or depth of the slot port will be the same as that of the round port To...

Страница 12: ...hrough Hole Inches 10 7 8 14 1 4 Diameter mm 312mm 390 53mm Diameter Inches 12 5 16 15 3 8 Displacement 4 Cu Ft 0 6 Cu Ft Minimum Sealed 0 75 1 75 Sensitivity dB Maximum Sealed 1 25 2 25 Sensitivity d...

Страница 13: ...12 W I R I N G D I A G R A M S Parallel Parallel 0 33 ohms 0 5 ohm 1 ohms Patent No US D478 556 S Patent No US 6 601 645 B1 Patent No US 6 656 000 B2...

Страница 14: ...13 W I R I N G D I A G R A M Series Parallel 1 33 ohms 2 ohms 4 ohms Patent No US D478 556 S Patent No US 6 601 645 B1 Patent No US 6 656 000 B2...

Страница 15: ...14 W I R I N G D I A G R A M Series Series 12 ohms 8 ohms 4 ohms Patent No US D478 556 S Patent No US 6 601 645 B1 Patent No US 6 656 000 B2...

Страница 16: ...g screws rattling noise and tightened with screws Check enclosure construction Check that the enclosure is debris free Check speaker polarity Correct polarity No sound from one coil Check speaker lead...

Страница 17: ...y with a fuse identical to the provided fuse Using a fuse of different type or rating may result in damage to the system which is not covered by the manufacturer s warranty Do not install any product...

Страница 18: ...17 N O T E S...

Страница 19: ...18 N O T E S...

Страница 20: ......

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