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View Full Version : Newbie installation MMC-690 pops and buzz

brmallory
11-03-2005, 12:29 PM
I am a bit of a newbie at this stuff but I have a professionally installed Pioneer CD player ( 50 watts x 4 ) running to an Alpine FRPM200 ( 75 watts x 4 ). From the amp, I am running speaker wire to crossovers then to speakers. These MMC-690 speakers sound horrible. They both pop and buzz and I can't hear the singers voice. This is the second pair from a reputable seller doing the same thing. I am sure that they are not installed right but I don't know where to start. I know these are sweet speakers and I am looking for some help as to where to go with this. Help guys!!!
MacLeod
11-03-2005, 07:35 PM
Yeah, Id say youve got something seriously hooked up wrong.

My first guess is youve got the crossover set wrong but its pretty much idiot proof as you cant hook the tweeter output to the mid input so I dont see how that couldve happened.

Try unhooking the speakers and run a speaker wire from the CD players speaker output and see if they work right. If so then the problem lies either with your amp or with its connections. Try this and let us know.
cam5860
11-04-2005, 02:45 AM
I will tell you what that sounds like the speaker wires are crossed up or bare speaker wire is touching the metal surface inside the door panel. Theres also always the chance you have your crossover set on low pass instead of high pass.
brmallory
11-04-2005, 04:56 PM
Ok...I will try running the speakers directly to the deck. One speaker sounds real bad like it is blown but I never turned it up past 1/4 of the way. Could I have blown the speaker? The crossovers are really not adjustable so I don't know how I could have hooked them up incorrectly. I though speakers are speakers...you hook them up and they sound great but this may be proving my ignorance.
MacLeod
11-04-2005, 05:01 PM
What we mean by hooking up the x-over wrong is you couldve run the tweeters wires to the mid and vice versa but like I said that x-over can only be hooked up one way.

I doubt you blew the speaker, especially if you never turned it up. Distortion wont hurt a speaker, only excessive power.