Help with Monitor 10 Speaker

Alvarado6411
Alvarado6411 Posts: 12
edited October 2009 in Vintage Speakers
I have 2 speakers, Monitor 10. My parents bought them at a yard sale and theyve been in the garage for couple years. So today I decided to try them out and they sound fantastic, at least the one that works.

One has a muffled sound to it, I found out it has to do with the tweeter. I've seen on here that I should switch the tweeters to see if the problem follows it.

So I switched the bad tweeter over to the good speaker and no dice. Didn't work which meant it was a bad tweeter. But strangely, I switched the good tweeter over the the other speaker and it wasn't working. I switched it again to its original speaker and it worked fine. I'm guessing there must be another different problem with that speaker as well.

Does anyone have some advice on what I should check out with the speaker?
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  • michaeljhsda2
    michaeljhsda2 Posts: 2,186
    edited October 2009
    Is there a fuse on the back? Could be the fuse holder is corroded like it was on my pair of Monitor 10's and it's not making contact like it should. If there is a fuse, spray the fuse holder with contact cleaner and spray the other speaker's fuse holder as well.
    SDA SRS 2.3TL's
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  • Alvarado6411
    Alvarado6411 Posts: 12
    edited October 2009
    Apparently I have the original revision "Model 10" Speakers in case it's relevant.

    If I need new fuses, where would I be able to get some?
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  • michaeljhsda2
    michaeljhsda2 Posts: 2,186
    edited October 2009
    Do they have fuses on the back?
    SDA SRS 2.3TL's
    Silk Audio MS-90-BT integrated tube amp
    Yaqin MS-20L integrated tube amp
    SDA 2B TL's
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  • michaeljhsda2
    michaeljhsda2 Posts: 2,186
    edited October 2009
    If they do have fuses and you don't have contact cleaner at the moment, remove the fuse and use a short piece of wire and run the wire through each small hole in the fuse holder. Play some music and see if there is sound coming out of the tweeters.
    SDA SRS 2.3TL's
    Silk Audio MS-90-BT integrated tube amp
    Yaqin MS-20L integrated tube amp
    SDA 2B TL's
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  • michaeljhsda2
    michaeljhsda2 Posts: 2,186
    edited October 2009
    Can you post a pic of the speakers, both front and back?
    SDA SRS 2.3TL's
    Silk Audio MS-90-BT integrated tube amp
    Yaqin MS-20L integrated tube amp
    SDA 2B TL's
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  • Alvarado6411
    Alvarado6411 Posts: 12
    edited October 2009
    michaeljhsda2 wrote: »
    Can you post a pic of the speakers, both front and back?

    dsc04957.pngdsc04961.png
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  • mmadden28
    mmadden28 Posts: 4,283
    edited October 2009
    Alvarado6411 wrote: »
    Apparently I have the original revision "Model 10" Speakers in case it's relevant.

    If I need new fuses, where would I be able to get some?

    Standard 1Amp Fast blow fuses--get them at Radio Shack or Home Depot, etc.

    You could also borrow the one from the working speaker...

    Otherwise, until you can do that--as michaeljhsda2 stated-just short the fuse terminals to see if you get sound back (don't crank it up too loud though).


    Oh and Welcome to Club Polk! :cool:
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  • F1nut
    F1nut Posts: 50,753
    edited October 2009
    In a pinch, use a pencil eraser to clean dirty contact points.
    Political Correctness'.........defined

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  • McLoki
    McLoki Posts: 5,231
    edited October 2009
    Alvarado6411 wrote: »
    dsc04957.pngdsc04961.png

    Is it just me, or is that tweeter upside down? (and does it matter?)
    Mains.............Polk LSi15 (Cherry)
    Center............Polk LSiC (Crossover upgraded)
    Surrounds.......Polk LSi7 (Gloss Black - wood sides removed and crossovers upgraded)
    Subwoofers.....SVS 25-31 CS+ and PC+ (both 20hz tune)
    Pre\Pro...........NAD T163 (Modded with LM4562 opamps)
    Amplifier.........Cinepro 3k6 (6-channel, 500wpc@4ohms)
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  • mmadden28
    mmadden28 Posts: 4,283
    edited October 2009
    McLoki wrote: »
    Is it just me, or is that tweeter upside down? (and does it matter?)

    I recall seeing something like that in another thread--where each 7C had one tweeter 'down' and one 'up' and somebody mentioned that one was a peerless and one an SL1000. Of course it could just be upside down.

    I just saw the pics (can't see them at work), 2 fuses huh? My 10A's only have 1 fuse each.
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  • F1nut
    F1nut Posts: 50,753
    edited October 2009
    It matters not whether the tweeter is mounted up or down, it'll sound the same.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • Alvarado6411
    Alvarado6411 Posts: 12
    edited October 2009
    Would I be able to buy the tweeters here?
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  • Pauly
    Pauly Posts: 4,519
    edited October 2009
    Alvarado6411 wrote: »
    Would I be able to buy the tweeters here?

    The no longer sell the peerless tweeters, you can find pair here and there FS here or Ebay used of course

    Good luck

    Pauly
    Life without music would♭
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  • madmike
    madmike Posts: 81
    edited October 2009
    I picked up a pair of tweeters from midwestspeaker.com that look like the original Peerless tweeters and they sound like the originals that I had before. This might be worth looking into, I think they were $44.95 and they have them in 4 and 8 ohm. Just look in the tweeter section near the bottom of the list. https://www.midwestspeaker.com/onlineshopping.asp
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  • Alvarado6411
    Alvarado6411 Posts: 12
    edited October 2009
    So I was checking out the fuse on the back and nothing.

    This is what I did, I exchanged the fuses around. I put the fuses from the bad tweeter speaker over to the good speaker and they worked.

    Then I put the good tweeter on the speaker that had the bad tweeter, and still nothing. It wasn't picking up the good tweeter. I was moving the sparks around and the tweeter wasn't playing out music.

    But I did find out the bad tweeter just doesnt work but now I have an unknown problem with the speaker, It wont pick up the good tweeter so I have no idea whats wrong.

    Any ideas?

    Btw, I'm extremely grateful for all the help here.
    madmike wrote: »
    I picked up a pair of tweeters from midwestspeaker.com that look like the original Peerless tweeters and they sound like the originals that I had before. This might be worth looking into, I think they were $44.95 and they have them in 4 and 8 ohm. Just look in the tweeter section near the bottom of the list. https://www.midwestspeaker.com/onlineshopping.asp

    Looking at my speakers, which tweeters should I get? The MT-4115-4 or the MT-4115-8?
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  • F1nut
    F1nut Posts: 50,753
    edited October 2009
    Check for continuity between the binding posts/fuses to the crossover and from the crossover to the tweeter. If no problems are found there, you have a problem in the crossover. Look at the crossover for a burnt resistor and/or a leaky cap.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • Alvarado6411
    Alvarado6411 Posts: 12
    edited October 2009
    F1nut wrote: »
    Check for continuity between the binding posts/fuses to the crossover and from the crossover to the tweeter. If no problems are found there, you have a problem in the crossover. Look at the crossover for a burnt resistor and/or a leaky cap.

    Because I am not THAT speaker savy I wouldn't know how to check out what you've described. I took some pics, maybe you can see for yourself and help me out.

    http://img410.imageshack.us/img410/8201/dsc04962m.jpg
    http://img96.imageshack.us/img96/675/dsc04963.jpg
    http://img33.imageshack.us/img33/9013/dsc04964s.jpg
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  • F1nut
    F1nut Posts: 50,753
    edited October 2009
    If you reduce the size/resolution of those pics, I'll look at them. Thanks.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • mmadden28
    mmadden28 Posts: 4,283
    edited October 2009
    The binding posts are where your speaker wires connect. Then on the inside wires connect from them to the crossover board. The crossover is the collection of resistors, capacitors and inductors that splits or filters the audio frequencies coming in, sending the high frequencies to the tweeters and the low freqs to the woofer. The crossover is what you have in the pictures.

    From those pics its hard to tell, but nothing looks fried anyway. Check all the wires make sure none of them are disconnected. I'm not sure where in the circuit the fuses come into play, but there will be wires so just check them (visually).

    And/or, try swapping the tweeters, That will narrow it down to a problem in the crossover or tweeter (or fuse block).
    ____________________
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  • Alvarado6411
    Alvarado6411 Posts: 12
    edited October 2009
    Would it be difficult to find some Model 10 speakers now for sale?
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  • JohnLocke88
    JohnLocke88 Posts: 1,150
    edited October 2009
    They show up every once in a while, but most are in pretty torked condition; when you get up into the $120+ range you can get some nice pairs.
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  • Alvarado6411
    Alvarado6411 Posts: 12
    edited October 2009
    where would be a good place to look out for them?
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  • mmadden28
    mmadden28 Posts: 4,283
    edited October 2009
    Craigslist
    ____________________
    This post is a natural product. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects.

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  • JohnLocke88
    JohnLocke88 Posts: 1,150
    edited October 2009
    http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330365252112&ssPageName=ADME:B:WNA:US:1123
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  • Alvarado6411
    Alvarado6411 Posts: 12
    edited October 2009
    JohnLocke88 wrote: »
    http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330365252112&ssPageName=ADME:B:WNA:US:1123

    Well crap, I saw that barely today when the bid is over. *Sigh*
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  • ehoove
    ehoove Posts: 1
    edited October 2009
    I take it that the peerless tweeter is the one to have. I bought 2 pair this weekend one pair in rosewood with the peerless tweeters and another pair in Oak with the silver coil tweeters. Thoughts?
    Regards,
    Jim
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  • Pauly
    Pauly Posts: 4,519
    edited October 2009
    ehoove wrote: »
    I take it that the peerless tweeter is the one to have. I bought 2 pair this weekend one pair in rosewood with the peerless tweeters and another pair in Oak with the silver coil tweeters. Thoughts?
    Regards,
    Jim

    Peerless are easier on the ears and not as bright as the SL2000 (Silver Coil)


    Pauly
    Life without music would♭
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  • Pauly
    Pauly Posts: 4,519
    edited October 2009
    Lasareath wrote: »
    I've never comparred Peerless 10's with RD0 10's to see which sound better. That'll be a fun thing to try out.

    Yes it would. I'll have to do that whenever i get around to getting some RDO's

    Pauly
    Life without music would♭
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