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Looking for different tweeter's

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Old 11-30-2013, 06:50 PM   #1  
How can anyone watch standard def?
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Join Date: Oct 2013
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Arrow Looking for different tweeter's

Hi Everyone.
I have a small problem with my HT set up... well maybe more than one problem, but the one I want to tackle here is Burning out Tweeters.
I have the Polk Audio TSX550t floorstanding speakers for my front channels, and the Polk Audio CS2 for the center channel, Polk Audio Monitor 7- Series II for the surround's. I have replaced the tweets in one of the TSX550t's and the tweet in the center channel already. (set-up is a month old or so.) I know that is caused by the amount of volume I run, but the speakers are rated to handle it, they just dont. The Tweeters being (by theory) the weakest link, they give out. I have been in contact with Ken at Polk Audio tech. through email and phone. Ken has told me that the Polk does not offer any upgraded tweeters for the TSX's as they have been on market only a few months/too new. I also requested info on the speakers internal crossover set points so I could match up a different after market speaker, but this info was not provided. so...
I am asking here, What Tweeters any of you might recommend. I am not to interested in the $400 ribbons as thats too much expense. A decent Bullet type, or something might work. A speaker that has the Ferrofluid for cooling might be good ( I dont think the present ones have cooling fluid, I cant smell it)
And/or Add a capacitor ? (in the positive line) what value ?
Add an external Tweeter ?
The present tweeter hole is 2" but I could cut the hole a half inch too an inch bigger.
The AVR burning them is a Pioneer Elite SC05 with ICE D-amp. Rated at 140 watts continuous x 7'/all channels driven and according to Pioneer tech support, it will peak over 300 watts per.
I do not notice any distortion when at high volume, or clipping. Just the 'snap ' when the tweeter gives out.
My listening seated area is approx 14 feet from the fronts, and usually if peaks of 113db - 115db come around , (measured with handheld SPL meter) a tweet fails. So... I know it is from me running them too loud, but what might I change out in the cabinet to handle it?
Other things...
when I replaced the tweet in one of the TSX's I removed all speakers to have a look, I found the cabinets internal wiring is 18 gauge appliance wire (tin and copper) I dont like the wiring, and might re-wire them. The crossover appears a bit small in build. The two woofers are wired in series, so are the two mid's. The wiring is connected to the speakers by push on clips the clips are tin, and do not fit well/loose.
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Old 12-03-2013, 10:01 AM   #2  
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To me that is a quality control issue and IMHO Polk either needs to be replacing them or refunding/replacing your speakers. No way you should be continuosly and repeatedly blowing tweeters on a system for which theythey are rated. The other explanation is that your volume levels are so outrageuos that I fear for your hearing or what will soon be left of it.
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Old 12-04-2013, 03:29 PM   #3  
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How about a temporary fix by using the AVR's internal tone controls to decrease the output at the tweeters frequencies? Say a 3dB cut above 5K Hz?
dave
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Old 12-09-2013, 11:04 AM   #4  
How can anyone watch standard def?
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Quote:
Originally Posted by jkkyler View Post
To me that is a quality control issue and IMHO Polk either needs to be replacing them or refunding/replacing your speakers. No way you should be continuosly and repeatedly blowing tweeters on a system for which theythey are rated. The other explanation is that your volume levels are so outrageuos that I fear for your hearing or what will soon be left of it.
Yes, and thanks... I do not listen at those levels in general, but in some movies, the sound track is quite drastic.
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Old 12-09-2013, 11:10 AM   #5  
How can anyone watch standard def?
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I have the whole curve toned down a bit at the high freq. end.. I think it is called x-curve on this avr. Yes Polk warrants the speakers for 5 years, and has already sent two replacements, now a different tower has blown the tweet. While changing the tweeters, I was quite disappointed in what I found in the cabinet, and as to the tweet, the cabinet is rated to operate at up to 300 watts continuous but the weight of the tweeter seems a bit off... the tweeter, with its mounting faceplate weigh maybe a total of 3 ounces
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