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Set up kef ls50 meta and rel t5x

Lsi

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Hi all
Need help config the rel t5x with kef ls50 meta, conetected with hi level input to topping pa7 pro.
LS50 should be at 95Hz with the ports sealed? And how can I know the exact hz on the rel?
Thanks shay
 

Vladetz

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You should not use high level with t5x and pa7. T5x does not have real dual channel differential input - it is not possible with 3 connects. You can run sweep hz test in YouTube and measure output with DB test app on your phone
 

staticV3

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The Speakon port is REL's preferred way of connecting the T/5x.

Here's what the manual says about connecting Class D Amps:
Screenshot_20240404-214319_Drive.png

LS50 should be at 95Hz with the ports sealed? And how can I know the exact hz on the rel?
With the port sealed, the LS50 Meta will start rolling off at about 100Hz:
KEF LS50 Meta Measurements Driver and port Frequency Response Bookshelf Coaxial Speaker.png

For proper subwoofer integration, use a measurement microphone or the HouseCurve App to measure your in-room response, then iterate on crossover and volume knob position until you have a good response.
 
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Lsi

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But I plug it with 3 connects and its working ⚒.
Can I conect it difrent way?
Thanks shay
 

staticV3

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Yes I read the manual, but whan I conect like this, I have noise all the time
As the manual says: connect the black wire to an RCA GND somewhere if you have noise.

DO NOT connect it to the PA7 speaker output.
 
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Lsi

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Thanks
Can u please explain more, what is rca gnd?
 
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Lsi

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1000011291.jpg
so if I understand u correct, I can plug the black cable to the rca on the topping?
 

Vladetz

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Anyway, I strongly suggest you to connect t5x by low level
 

staticV3

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View attachment 361380so if I understand u correct, I can plug the black cable to the rca on the topping?
Try just touching the black cable on the gold ring surrounding the RCA inputs. If the noise goes away, then you can look into how to connect it there permanently.
 
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thewas

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With the port sealed, the LS50 Meta will start rolling off at about 100Hz:
KEF LS50 Meta Measurements Driver and port Frequency Response Bookshelf Coaxial Speaker.png
It should be kept in mind that also the woofer response changes when the port is sealed so the roll off won't be the same like from such an ported nearfield measurement but usually a bit deeper and with lower steepness so in the end

For proper subwoofer integration, use a measurement microphone or the HouseCurve App to measure your in-room response, then iterate on crossover and volume knob position until you have a good response.
is the only way to go.
 
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Lsi

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It's only apple app? Not for android...
 

staticV3

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It's only apple app? Not for android...
Correct.

It only works because the developer can compensate for the limited number of microphones built into the different iPhone models.

That's not possible with the Wild West of Android hardware.
 
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Lsi

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OK after testing, when I touch the black cable with the rca gold the bad noise is over how can I plug it In The Best Way?
Thanks shay
 

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staticV3

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OK after testing, when I touch the black cable with the rca gold the bad noise is over how can I plug it In The Best Way?
Thanks shay
What kind of Speakon cable do you have?
s-l1600 (1).jpg 81tTJwoN-pL._AC_SL1500_.jpg

Bare wire or with spade connectors?
 
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Lsi

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this one
 

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Lsi

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Can someone tell me without mic, how much clicks is 80 hz with rel t5x?
 
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