Non working tweeter in Monitor 7 series 2

tubezrock
tubezrock Posts: 11
edited October 2011 in Troubleshooting
I have a pair of M7 II's circa 1991. The tweeter on one of them is not working at all. There is no fuse on the back of the unit. The midrange and woofer seem OK. Thinking the tweeter was blown, I ordered a new one from polk. The original tweeter is an SL 2500. I read Average Guy's post from 3-7. He had a similar problem with an older M7 but a new fuse fixed the problem. Can anyone offer some help? Thanks.
Post edited by tubezrock on
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  • dorokusai
    dorokusai Posts: 25,577
    edited March 2008
    Move the tweeter from the working speaker to the non-working speaker. That speaker only has one woofer per cabinet, as the other diaphragm is a passive radiator.

    You already ordered a new tweeter so I'm not sure what else you need help on.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • tubezrock
    tubezrock Posts: 11
    edited March 2008
    In another posting, I noted that they had talked about shorting the polyswitches. I am not sure how to identify them, but I am in the process of switching tweeters now.
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  • tubezrock
    tubezrock Posts: 11
    edited March 2008
    I have a bad tweeter in one of my M7's. It it OK to replace just the bad one, or is it advisable to replace both?
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  • tubezrock
    tubezrock Posts: 11
    edited March 2008
    I have a bad tweeter in one of my M7's. Is it OK to replace just the bad one, or is it better to purchase a pair and replace both?
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  • dorokusai
    dorokusai Posts: 25,577
    edited March 2008
    The are located on the x-over, look like flat, mustard colored discs. You should replace them also as they are FREE from Polk Audio.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • wizzy
    wizzy Posts: 867
    edited March 2008
    If you can find an exact, I'd replace just one ... but that's me
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  • dorokusai
    dorokusai Posts: 25,577
    edited March 2008
    One thread is fine for these questions tubezrock.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • ben62670
    ben62670 Posts: 15,969
    edited March 2008
    tubezrock wrote: »
    I have a bad tweeter in one of my M7's. Is it OK to replace just the bad one, or is it better to purchase a pair and replace both?

    Welcome to Club Polk.
    You definitely want to have matched tweeters. Positively. Absolutely. Without a doubt
    Ben
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
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  • tubezrock
    tubezrock Posts: 11
    edited March 2008
    Thank you all for your help. Sorry about the multiple posts. Was'nt quite sure how this worked. Is the RD0198 replacement tweeter sonically equivalent or close enough to the original SL2500 to only purchase one, or do you recommend replacing both?
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  • george daniel
    george daniel Posts: 12,096
    edited March 2008
    tubezrock wrote: »
    Thank you all for your help. Sorry about the multiple posts. Was'nt quite sure how this worked. Is the RD0198 replacement tweeter sonically equivalent or close enough to the original SL2500 to only purchase one, or do you recommend replacing both?

    If you are going to replace the tweeters with the rdo's,, replace both IMHO.
    JC approves....he told me so. (F-1 nut)
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  • tubezrock
    tubezrock Posts: 11
    edited March 2008
    Please forgive my ignorance, but what is "IMHO"?
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  • tubezrock
    tubezrock Posts: 11
    edited March 2008
    Thanks for the help, I will call customer service Monday morning and order an addtional RDO198.
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  • george daniel
    george daniel Posts: 12,096
    edited March 2008
    tubezrock wrote: »
    Please forgive my ignorance, but what is "IMHO"?

    In my humble opinion
    JC approves....he told me so. (F-1 nut)
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  • wizzy
    wizzy Posts: 867
    edited March 2008
    tubezrock wrote: »
    Please forgive my ignorance, but what is "IMHO"?

    That's how a retarded prostitute with severe speech difficulties let's you know she is a call girl.

    Try sticking your tongue out, then saying a kind of slowed down "I'm Ho" and you'll get a good approximation.
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  • jtgranby
    jtgranby Posts: 887
    edited March 2008
    Lasareath wrote: »
    LOL, oh my god that's so funny Wizzy!

    But, back to the post:

    You'll need to order (2) RD0194-1's from polk Customer service, Tell them you are a Club Polk Member and you will get the tweeters @ 50% off. They will cost you $48 each and you will receive free 2 day shipping.

    It's a very Sweet Deal brought to you only by POLK AUDIO!!!!



    I just sold a pair to my cousin's boyfriend for his 10B's and he loves the way they sound even more now.

    Lasareath

    No Sal he has SL2500 tweeters replacement tweeter is RD0198. You must get 50% off since you are such a good customer :D


    JT
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  • tubezrock
    tubezrock Posts: 11
    edited March 2008
    Thanks for the "english" lesson and the help! I'll give customer service a call and change my order on Monday and check on the discount.
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  • dorokusai
    dorokusai Posts: 25,577
    edited March 2008
    jtgranby wrote: »
    No Sal he has SL2500 tweeters replacement tweeter is RD0198. You must get 50% off since you are such a good customer :D


    JT


    Nobody reads anymore.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • northernaudio
    northernaudio Posts: 1
    edited October 2011
    Hello Polk Fans,
    I have a pair of Monitor 7 Series 2 and in my opinion the SL-2500 tweeter sucks (Big One) they can't handle the high output that most of us vintage audio nuts dare to put into these wimpy speakers, BUT! I replaced the SL-2500 tweeters with a pair of SL-2000 Silver Coil Dome Tweets from a pair of Monitor 5jrs and with crossover upgrades (Can Be Found On eBay) they are practically blow-proof.....Hope This Helps : )
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  • HTguru1982
    HTguru1982 Posts: 1,066
    edited October 2011
    This thread is only 3 years old but for someone somewhere, I'm sure it will help.
    Display: Sony 42" LCD
    Sources: Harman Kardon DVD-27,
    Panasonic DMP-BDT110 blu ray player
    AVR: Sony STR-DA2400ES
    Amps: Sonance Sonamp 260(fronts),
    Kenwood KM-894(surrounds)
    Fronts: NHT 2.5
    Center: NHT VS-1.2A
    Surrounds: NHT Super One
    Subwoofer: SVS PB10-ISD
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