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Blew a tweeter on polk T15.

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Posted on February 17, 2017 at 15:08:24
Raymond Leggs
Audiophile

Posts: 748
Joined: November 25, 2007
I have a pair of older version of the T15/R15 bookshelf speakers I aquired last year. The original tweets were silent so I re-used the original baffle plate that says Polk dynamic balance and put new tweeters in the both of them. Also soldered the connections since the metal crimp connectors broke, like glass. (impure metal).

A couple of nights ago I turned on my Onkyo TX-906 Dolby pro logic stereo receiver,(80 watts x 2 at 8 ohms 145 into 4) and unbeknownst to me the Balance knob was ALL THE WAY to the left channel, and the volume knob was ALL THE WAY to it's end stop. The Direct tv box was on.

ROOOOAAAAAPHHHHHHH! It scared me, the woofer is fine but the tweeter on the left channel is dead silent.. Receiver is fine too, didn't go into protector/overload.

I am torn between buying surplus Polk fabric dome, Trilaminate (if availible cheaply) with the same plate, or I could get some Dayton silk domes, and remove them from their little plastic ring and mount them behind the tweeter plate.

or i could get the unlabeled Daytons that have the same size mount and a slightly beefier magnet...

I like the fact the speakers have a lot of tight bass for the size so i dont think i am going to buy new speakers but i have a few pairs on ebay (different speakers) that i have been eyeing.

 

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RE: Blew a tweeter on polk T15., posted on February 17, 2017 at 18:03:07
airtime
Audiophile

Posts: 11287
Location: Arizona
Joined: February 4, 2003
Try contacting both Madisound and Parts express to see they can recommend a replacement tweeter.

You are not even the first THIS WEEK to blow a tweeter that way.

Best of luck finding a replacement.

 

RE: Blew a tweeter on polk T15., posted on February 18, 2017 at 07:04:13
Raymond Leggs
Audiophile

Posts: 748
Joined: November 25, 2007
Mavin.com has polk tweeters for 35.00 a pair.

I wonder if someone up above (or below) has something against our speakers?

I mean dali epikons with blown woofers but not the tweeters, one pair of them dead completely, and then mine! On the way to being on the 3rd set of tweeters (1st was factory)..

I did have a woofer voice coil in a decent RCA bookshelf speaker catch fire when the USS Arizona exploded in the movie pearl harbor when i was watching it on vol 50 out of 70 on a like branded receiver. the receiver wouldn't turn back on for about 15 mins.

 

RE: Blew a tweeter on polk T15., posted on February 18, 2017 at 09:28:22
Coner
Audiophile

Posts: 3703
Location: S.W. Washington state, USA
Joined: November 17, 2001
Seems to me you need a sub to handle the bass, or get something
larger than bookshelf size if you keep overdriving them. Big explosions
over bookshelf speakers is asking for trouble.

 

RE: Blew a tweeter on polk T15., posted on February 18, 2017 at 12:09:06
Raymond Leggs
Audiophile

Posts: 748
Joined: November 25, 2007
It was an accidental not paying attention to the volume and not knowing a source component was on that blew the tweeter not intentional high volume. I am goint to get a limited time discounted crossover terminal cup for a sony passive sub I found.

I was intending to just keep the raw woofer, but i am too lazy to build anything lol.

I use the system mostly for music and movies at lower volume. I might get another receiver with digital input later on...

 

I'd try to find an original tweeter., posted on February 18, 2017 at 12:14:33
Bry
Manufacturer

Posts: 5610
Location: S. Florida
Joined: July 21, 2005
If you don't have the equipment and experience to match up a 3rd party tweeter, you're likely to end up with something that doesn't perform as well. For example, it could be several dB louder or quieter than the original and probably won't blend well with the woofer without crossover changes.

 

RE: I'd try to find an original tweeter., posted on February 18, 2017 at 17:22:13
Raymond Leggs
Audiophile

Posts: 748
Joined: November 25, 2007
Mavin.com sells surplus of the original tweeter.

 

Call Polk as well..., posted on February 18, 2017 at 21:20:25
MannyE
Audiophile

Posts: 2088
Location: Miami Beach
Joined: March 4, 2001
I recently bought some parts from them for a 20 year old Monitor 4 bookshelf. They still have some parts for legacy speakers.

 

Don't listen so LOUD then, eh?!, posted on February 19, 2017 at 00:28:50
Timbo in Oz
Audiophile

Posts: 23221
Location: Canberra - in the ACT - SE Australia
Joined: January 30, 2002
;-)!


Warmest

Tim Bailey

Skeptical Measurer & Audio Scrounger


 

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