Question about Mackie SRM-450 System

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We have top but no bass through one SRM450.

Through one SRM450, the sound is fine, but the other has no bass and only top. When vocals are passed through that seems fine? The cones seems ok and I couldn't see any loose connections. Been suggested the driver? If so, are they easy to replace by oneself?

If it needs going to a repair centre could someone suggest one? We leave near Crewe in Cheshire.

Cheers Rob

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Posted on Jan 02, 2017

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SOURCE: mackie srm450 the tops on one speaker is not working

Hi There, This is quite a common problem with the Mackie SRM450's. You will find that you need to replace the diaphram on the top. This can be done by removing the 16 screws from the back of the Mackie (quite a long pain in the **** job) with a long handled cross head screw driver.

Once you have done this you should then remove the hex bolts from the back of the drive where the black and right terminals are. When this is done, pull off the cover and swap the diaphram out. With the new diaphram in place reverse the steps above but before you screw the back on, power it up carefully and check the sound is now working.

If the diaphram keeps going eg every 3 to 4 months then you will need to change the driver which is quite expensive to do. If you need spares and are based in the UK, contact LondonSpeakerShop.com who carry spare parts or can undertake the repair.

Hope this helps.

Posted on Mar 05, 2009

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SOURCE: When turned on: srm450 has no sound, but all leds

1 TAKE THE MAINS PLUG OUT
2 Unscrew the fixing screws on the back. (just the outside ones)
3 Take the back off and turn the amplifier circuit board to face you.
4 About 2" from the left and about 4" from the bottom you will see a sort of tab. pull it off gently and widen the 2 prongs slightly.
5 Put the jumper tab back on and re fit the amp.

Posted on Feb 15, 2010

  • 236 Answers

SOURCE: NEED A REPLACEMENT DRIVER FOR MY SRM450 ANY

if ur talking about your subwoofer i suggest buying one that fi in ther or try ebay for a relplacement

Posted on May 10, 2010

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Hi There, This is quite a common problem with the Mackie SRM450's. You will find that you need to replace the diaphram on the top. This can be done by removing the 16 screws from the back of the Mackie (quite a long pain in the **** job) with a long handled cross head screw driver.

Once you have done this you should then remove the hex bolts from the back of the drive where the black and right terminals are. When this is done, pull off the cover and swap the diaphram out. With the new diaphram in place reverse the steps above but before you screw the back on, power it up carefully and check the sound is now working.

If the diaphram keeps going eg every 3 to 4 months then you will need to change the driver which is quite expensive to do. If you need spares and are based in the UK, contact LondonSpeakerShop.com who carry spare parts or can undertake the repair.

Hope this helps.

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