Speakers wont play below 1000 Hz - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 8 Old 11-26-2018, 02:37 PM - Thread Starter
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Speakers wont play below 1000 Hz

I have a pair of FXiA6 Polk Audio. Was running REW and noticed that the pair of speakers won't play below 1000 Hz, the dB is around 80 at 1000 Hz and is down below the soundstage of 60 dB around 900 Hz.


I'm assuming the mid/woofer is done. Don't know the transition from Mid/Woofer to tweeter.


Is this something that is fixable?


I checked in the bipole and dipole configuration. Then I unplugged them and plugged in a set of T15 and it played sound in the 100 Hz to 1000 Hz range. So it is something wrong with the speakers.








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  • (2) 1" (2.54 cm) d (Round) Dynamic Balance silk polymer composite dome - Tweeter
  • (1) 6.5" (16.51 cm) d (Round) Dynamic Balance polymer composite cone and rubber surround - Mid/Woofer

Last edited by soccerTOOLsu; 11-26-2018 at 02:42 PM. Reason: additional info
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post #2 of 8 Old 11-26-2018, 02:50 PM
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1000hz would be a really low crossover for a 2 way speaker. I have never tested with REW a Dipole/Bipole speaker may be it's just cancellation. Can you post the graph?

Do a slow sweep and feel the woofer, is it still moving below 1000Hz?
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post #3 of 8 Old 11-27-2018, 11:13 AM
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Quote:
Originally Posted by soccerTOOLsu View Post
I have a pair of FXiA6 Polk Audio. Was running REW and noticed that the pair of speakers won't play below 1000 Hz, the dB is around 80 at 1000 Hz and is down below the soundstage of 60 dB around 900 Hz.


I'm assuming the mid/woofer is done. Don't know the transition from Mid/Woofer to tweeter.


Is this something that is fixable?


I checked in the bipole and dipole configuration. Then I unplugged them and plugged in a set of T15 and it played sound in the 100 Hz to 1000 Hz range. So it is something wrong with the speakers.








Driver Complement
  • (2) 1" (2.54 cm) d (Round) Dynamic Balance silk polymer composite dome - Tweeter
  • (1) 6.5" (16.51 cm) d (Round) Dynamic Balance polymer composite cone and rubber surround - Mid/Woofer
Under warranty if they are less than 5 years old.

Call Polk.

Geoff A. J., California
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post #4 of 8 Old 11-27-2018, 11:37 AM
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Quote:
Originally Posted by soccerTOOLsu View Post
Was running REW and noticed that the pair of speakers won't play below 1000 Hz
Test each speaker individually.
Michael
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post #5 of 8 Old 11-27-2018, 11:54 AM
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Quote:
Originally Posted by Blacklightning View Post
1000hz would be a really low crossover for a 2 way speaker. I have never tested with REW a Dipole/Bipole speaker may be it's just cancellation. Can you post the graph?

Do a slow sweep and feel the woofer, is it still moving below 1000Hz?
In this case 1000Hz is probably well below the crossover point but still audible.
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post #6 of 8 Old 11-27-2018, 12:01 PM
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Have you tried hooking the speakers up to a source and playing music or something through them? Perhaps you have a setting in REW that is limiting the frequency?

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post #7 of 8 Old 11-27-2018, 01:27 PM - Thread Starter
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Originally Posted by Jawaburger View Post
Have you tried hooking the speakers up to a source and playing music or something through them? Perhaps you have a setting in REW that is limiting the frequency?

No, I put a different speaker in and it played full frequency from 100 Hz to 20,000 Hz. So hot swapping speakers allows me to play below 1000 Hz.


Did not change a single setting in REW, Computer, or AVR. For sure issue is limited to Speaker only.
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post #8 of 8 Old 11-27-2018, 01:29 PM - Thread Starter
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Quote:
Originally Posted by impreza276 View Post
In this case 1000Hz is probably well below the crossover point but still audible.
I think the cross over would be in the 1800 Hz to 2300 Hz range. For midwoofer to twitter.
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