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Multi-Way Conventional loudspeakers with crossovers

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Old 8th October 2006, 03:06 AM   #1
jjs4028 is offline jjs4028  United States
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Exclamation Help/advice needed

alright here's my deal.

i had 2 old pioneer cf9000 floor speakers, pretty old but the boxes and grills are in pristine condition so i decided instead of buying new ones i would just replace the individual parts on these, well i ordered the tweeters and midis directly from pioneer's website and installed them recently, when i play the radio they sound clear and no problems besides the left one occasionally popping in out and out???, anyways my main concern is when i ran a cd player into the phono on the amp (which is also very old/pioneer) the music plays but there is occasional popping/crackling? any advice as to what could be wrong or what i could do to fix this would be greatly appreciated, installing the new subwoofers to the speakers soon as well.
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Old 8th October 2006, 03:37 AM   #2
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Is the problem coming out of both speakers? If so it may be somewhere in your electronics. If it seems to be coming out of one speaker try switching the speakers to the opposite channels - if the problem follows the speaker when you do this it's the speaker - if it remains in one channel it's in your electronics.

If it turns out it's a speaker and it's coming out of all the drivers it's most likely in the crossover network. If it comes out of only one driver it could be just that driver or still in the crossover, in just that channel of it. Try switching the driver with the same one from the other speaker - same problem? Then it's in the crossover; if the driver itself still misbehaves in the other speaker you have a bad driver. If it turns out to be in the crossover you should see if Pioneer has a replacement for it, or try to troubleshoot it yourself - depends on your electrical skills.
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Old 9th October 2006, 06:04 PM   #3
jjs4028 is offline jjs4028  United States
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thanks for the response....

well i tried switching channels and the prolem followed, so i guess the problem is within the speaker itself somewhere, seeing that the tweeter and midi is brand new i dk what is wrong? by "network" do you mean the wiring? and what is the crossover and driver?

I know i am amateur to this stuff but i am trying to learn. Thanks for your help guys.
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Old 9th October 2006, 07:12 PM   #4
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The "crossover network" is a set of electrical components that divides the signal coming into the speaker into ranges of frequencies suitable for each driver. The drivers are the individual "things" that actually reproduce the sound - your new midi and tweeter are drivers.

Now that we know the problem is in the speaker with the new drivers, I suspect it is probably in one of them. Try running the speaker with the tweeter disconnected, then reconnect it and run the speaker with the midi disconnected. Do this test with the other speaker completely disconnected so it doesn't distract your listening to the bad speaker.

What happens when you do this test? Get back to me when you've done this.
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Old 11th October 2006, 06:12 AM   #5
jjs4028 is offline jjs4028  United States
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i removed each driver and tested them individually in the other speaker (that was already working and each one sounded great so i guess it is the crossover network?
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Old 11th October 2006, 04:35 PM   #6
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It does appear to be the crossover, but the timing is a little coincidental. To make absolutely sure, it's probably a good idea to test the drivers from the other speaker on the problem one - if the problem is still there it doesn't seem like it could be anything but the crossover.

You can try pulling it and checking all the connections, but without knowing these components very well it's probably going to be easier to see if Pioneer has a replacement for it, if not the exact same one then hopefully something suitable that won't make your two loudspeakers audibly different from eachother.

Let me know...
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Old 11th October 2006, 04:58 PM   #7
sreten is online now sreten  United Kingdom
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Hi,

check the crossover board for dry joints.

/sreten.
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Old 11th October 2006, 06:08 PM   #8
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Quote:
Originally posted by sreten
Hi,

check the crossover board for dry joints.

/sreten.
Hey sret - sorry I'm a little unfamiliar with some of the jargon and jjs4028 may be too - do you mean separated connections, as in broken solder, etc. or something else?
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Old 11th October 2006, 06:59 PM   #9
peufeu is offline peufeu  France
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Maybe it's a bad contact. Did you also swap the cables ? Old speaker connectors can oxidize...

And he meant broken solder joints ; simply re-melt the solder and add a bit of new solder on top of it.
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Old 11th October 2006, 07:24 PM   #10
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Quote:
Originally posted by peufeu
Maybe it's a bad contact. Did you also swap the cables ? Old speaker connectors can oxidize...

And he meant broken solder joints ; simply re-melt the solder and add a bit of new solder on top of it.
Jeez I'd feel stupid if it was something as simple as that, after all the technical stuff I've had him go through - I can't believe I didn't think of that first.

Oh well I guess it's a good learning experience...
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