Question about Mackie PPM608 / C300z PA Package

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How do you get inside to the horn on a Mackie c300z? I need to replace horn diaphragm.

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You use a VERY long phillips screwdriver as there are screws in those deep wells from the back. I think it takes a #3 phillips and you want one with at least a 12 inch shaft to reach the screws. The screws are black and are Kaylon or sheet metal types with pan heads. It can be a little tricky to engage the screwdriver bit as deep as these are.

Make sure ALL screws are completely out... count them vs the number of wells... there are a lot!

Then you have to pry the back off.

Posted on Mar 17, 2011

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My Mackie HD1531 has a high pitched whistling sound, all other speakers work fine with the same power connection and desk connection. It whistles regardless of whether it has a sound input or not.


Sounds like a problem with the horn amp in that cabinet. This is not a user fixable problem and needs to go to the shop. Here is a link to the Mackie support page where you can find a link to the repair shop list.
Mackie Tech Support

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I have 3 behringer b615d and all of them the horn speaker have spot playing. do you know what could be the problem


Generally, there are two possible problems- The horn diaphragm is blown or the power amp to the horn is broken. The diaphragm being blown is more likely. Remove the driver and run a voltmeter across the terminals. If it doesn't show continuity, replace the diaphragm. If it does show continuity, take the cabinet to the repair shop.

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I have 4 behringer b 615 d. And 3 of those the horn have stop playing


There are really only two choices. Either the horn amplifier in each cab is blown, or the high frequency horn driver diaphragm is blown. It's easiest to check the diaphragm first. Open up the cabinet so you can get to the horn driver terminals. Put a voltmeter across the terminals and check for continuity. if it shows open, you've found the problem. Open the driver and replace the diaphragm and you're done.. If the horn driver tests good, it's time to take the cabinet into your local electronics repair place to have them check out the amp section.

Sep 15, 2014 | Music

1 Answer

Need Schematics for Mackie C300 Speaker


Do you have the existing resistor, Larry? Is it crisped up, or can you still read the colored bands? Those colored bands are a color code indicating its resistance - if you can read them off here, we can tell you what its resistance is.

As to wattage... that's something we could at least estimate from size & shape, weighted a little by speaker wattage rating (that resistor should never see as much wattage as the rating).

Last... if we knew for sure what every other component is (from its printed labeling), we could reconstruct the schematic and calculate that resistor's value. Reverse-engineering a crossover designs is far from being rocket surgery. 8)

I offer these as alternative approaches; it may be near-impossible or impossible to get that schematic.

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Need spec on Mckenzie loud speakers 12'' dual cone 85 watts rms


What\'s the question, are you asking about eyebolts, SRM 450 or McKenzie speakers?



Let\'s assume speakers. These are quite nice vintage speakers and were fitted in a number of units back in the day. Depending on the use they are going to be put to you\'ll need to find the dimensions of similar boxes for the same use and speaker size from (ideally) makers who used these speakers or something similar. It\'s going to be a bit suck it and see and will also depend on if you are looking to use an infinate baffle, sealed or vented enclosure.



Try Speakerplans com

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1 Answer

I can not locate the fuse for a ppm608 amplifier


It is located on the Power Supply PCB next to the ac line voltage plug.

Mar 20, 2012 | Mackie PPM608 / C300z PA Package

1 Answer

Hi, I need to know how do you replace the 1" compression driver in a mackie thump th-15 and where would i get one from ? cheers.


After removing the back cover disconnect the tweeter cable form the terminal. Then hold the tweeter magnet and turn it anti clock wise. The driver unit will unscrew and come of the horn assembly.
Keep the driver unit on a firm table and unscrew the four + screws. It has a sandwich assembly which will part into two if you put a sharp knife and twist. You will see the tweeter diaphragm which can be lifted up again by using a sharp knife. The replacement diaphragm is available from the below given address
http://reconekits.com/tapcothumpth-15ahorndiaphragmpn0013252-1.aspx

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1 Answer

How do i connect a tascam cd-2001 to a mackie ppm1012?


You can either use a 1/4 jack or the standard RCA's Radio shack or some store like that should be able to get you what you need

May 05, 2011 | Mackie PPM1012 / C300z PA Package

1 Answer

When playing through the pa the speakers and sound will cut out on the mains and the monitors. Clip! i have the Mackie ppm 1012 and a pair of c 300 and a pair of c 200's. i daisy chain them both. one side...


Well, you aren't going to like this... You have a system that can deliver 250 Watts maximum RMS BECAUSE that is ALL the input power there is from the power cord. All these numbers like 800 watts a side are BS... those are PEAK power and not sustained power... More basically fake advertising that we are so accustomed to lately. The good thing is you won't blow your speakers.

The clipping is the internal protection that limits the amp from saturating.

I know you aren't going to like to hear this after spending that much... If you want more power you will need to buy another amp to get the higher sound level and use this as a mixer... One side of this should be able to drive 125 watts which SHOULD be enough to use for monitors. You should procure a sound level meter and make sure you are staying within the sound level guidelines now to protect your hearing... I know of several musicians that now are near deaf due to exposure to high sound levels...

Feb 01, 2011 | Mackie PPM1012 / C300z PA Package

1 Answer

Repair a Mackie SRM 450 Speaker The Speaker is making a crackling sound while playing. The sound keeps cracking up.


You probably need to replace the diaphragm. The diaphragm is located behind the back cap. Simply remove the back cap, remove the diaphragm, clean the voice coil gap with a piece of masking tape, install a new replacement diaphragm, reinstall the back cap. That it!
You can see videos on how to replace diaphragm at this link.
http://www.soundspeakerrepair.com/speaker-parts-c/INST/Installation+Instructions
You can buy a new Mackie SRM450 diaphragm at this link.
http://www.soundspeakerrepair.com/speaker-parts-cp/SRM450-DIA/DIA-Mackie/Mackie/

Jul 20, 2009 | Music

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