mismatched peerless tweets?

canadianicon25
canadianicon25 Posts: 200
edited February 2013 in Vintage Speakers
just a quick post. this one may seem obvious for many but if you have a mismatched set of peerless in your polks and one seems to sound a bit brighter than the other try adjusting the balance between the two channels. i found that a slight adjustment in the balance can even the sound out a bit better.

does anyone out there a more advanced approach, such a adding components to the x-over?
Post edited by canadianicon25 on
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  • ZLTFUL
    ZLTFUL Posts: 5,650
    edited January 2013
    This is a tough one.
    Shifting balance will also shift power away from the midrange drivers. So while you are seemingly balancing out the sound, you are actually taking away from the overall nature of the sound.

    You could probably eventually stumble onto a balance by swapping caps in one or the other crossover or add or remove resistors, etc. But also not a good solution. You will most likely end up doing more harm than good and the speakers will never be "identical".

    The *ideal* solution would be to verify first of all that the output difference truly are the tweeter.
    Remove the tweeters and connect them directly to your power source (amp or AVR not the wall hehe). Then at VERY low volume, compare the 2. They should sound identical to your ear. If not, one of them may be bad or worse off than the other. Simple solution...order up a pair of replacements from Polk CS. (194s I believe.)
    If they do sound identical, then it is most like an issue with your crossover in one or the other speaker. I would check for leaking capacitors (especially if it has the originals still in it). Also check the other components on the HF side of the crossover. There are schematics stickied at the top of this section of the forum.

    If the crossover/s are the culprit, then it is a perfect opportunity to pick up new poly caps and upgrade the crossovers. Just match the specs on the old capacitors to the equivalent from one of the quality capacitor suppliers out there.
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
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  • canadianicon25
    canadianicon25 Posts: 200
    edited February 2013
    As far as I know there is no replacement for peerless tweeters. If I want them to match I will just have to wait until one shows up for sale. The caps have been replaced, but not the resistors.
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  • gdb
    gdb Posts: 6,012
    edited February 2013
    You could do what I did, amass a bunch of them, I now have a "lifetime supply". Or......
    http://www.ebay.com/itm/Peerless-Copy-8-ohm-Tweeter-Replacement-for-Polk-ADS-/150364380186?_trksid=p3911.c0.m14&hash=item23026a5c1a
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  • ZLTFUL
    ZLTFUL Posts: 5,650
    edited February 2013
    One of the reasons that sequnetial serial numbers are such a great selling point is that it makes it an almost certainty that all of the drivers in a speaker came from the same batches and *should* be as close to identical as possible.

    Not to say there will be a significant difference since they all have to meet certain criteria but just that situation is more ideal.

    You could always check the speaker's impedance and verify that they are both the same. This too will give you more info to determine of the tweeter is the issue or the crossover.

    As for the RDO replacement...for some reason, last night "Peerless" and "SL2000" were the same thing in my sleep deprived brain. :lol:
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
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  • gdb
    gdb Posts: 6,012
    edited February 2013
    http://www.polkaudio.com/forums/showthread.php?87272-Possible-Peerless-substitute&highlight=peerless
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  • canadianicon25
    canadianicon25 Posts: 200
    edited February 2013
    the difference in sound between the two tweeters appears to be volume related. could this have anything to do with the x-over not delivering the same power as the other speaker resulting in a power inequality between them? i never upgraded the resistors; could that change the current flow resulting in a change in apparent volume?
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  • gdb
    gdb Posts: 6,012
    edited February 2013
    Have you determined that the same volume is obtained with both tweeters when they're swapped back and forth in one of the channels/cabinets, then get the same results when both are tried in the other channel /cabinet ? I'm not sure that I'd have the memory needed to do the comparison w/out an SPL meter. (which I don't own currently) As far as your Xover question, anything is possible, I'd imagine, but, I'm not tech savvy so, I'm the wrong one to ask about that arena.:wink:
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