Hi Ryssen. Does your diyF6 effectively damp the woofer of your loudspeaker? lhquam has practiced the guidelines of Mr. Pass shown above, and fully detailed the performance of his Teaser diyF6. Still, he concluded that his loudspeakers are not the best mates for it. Adjusting the harmonic balance worked for some DIYers, like generg, buzzforb, etc. but not for him.
Mr. Srajan Ebaen used the loudspeaker Aries Cerat Gladius to evaluate F6 which he liked. He had also reviewed this loudspeaker earlier using F5 and liked this amp very much. Fortunately, the impedance versus frequency curve of the Aries loudspeaker was published by its maker. Way different from that of lhquam's loudspeaker for comparison. There is valuable knowledge in bringing together the reviewers' [including generg, buzzforb, lhquam etc] input to attempt to connect the subjective with objective performance.
I have connected an 8 ohm resistive load to the amp and takes the signal throught a 100K pot to my laptop,I am running audio tester the spectrumanayzator and running an 1khz signal through the amp wich I se on the audiotester but I get no watsoever reaction when turning the pots on the ampmodule.
Is this normal? 😕
Is this normal? 😕
Ryssen - can you post a photo of the audiotester screenshot during the test?
The changes will be in the 2nd and 3rd harmonic
The changes will be in the 2nd and 3rd harmonic
But I don´t know why theres both a blue and red curve when I only have one channel from tha amp connected?Can I turn it off somewhere?
You don't have the amplifier biased properly.
You should be able to turn off one channel in audiotester.
You should be able to turn off one channel in audiotester.
Hmm,0,15v over the 0,1 ohms resistors.
I t gets nearly to hot to touch the sinks.
Btw how could you tell just by locking at the spectrum.😕
I t gets nearly to hot to touch the sinks.
Btw how could you tell just by locking at the spectrum.😕
If it's biased, then something else is wrong... your odd-order harmonics are stronger than the even-order, and they are all huge. The only harmonic spikes you should see are 2 and 3.
You are giving the amp a clean 1000Hz sinewave? Don't use squarewaves.
Perhaps it's just a measurement error... does it sound good?
You are giving the amp a clean 1000Hz sinewave? Don't use squarewaves.
Perhaps it's just a measurement error... does it sound good?
Put your DMM n AC, change for a moment from 1kHz to 200Hz and measure the voltage over the 8R at the output.
Disconnect for security connection to Laptop input......
Do have the 2.83V at 8R for 1Watt or more..?.or less....
Maybe you have to increase or decrease the the input voltage ....
If you have the 2.83V go back to 1kHz and measure again, when the DMM AC shows nearly the same value..... good, if not keep the reduced value in mind and use it in future for the
measurements with 1kHz.
I measure always first the 2.83V and the I look if my pot reduces the value to let us say secure 100-200mV for the laptop...
Disconnect for security connection to Laptop input......
Do have the 2.83V at 8R for 1Watt or more..?.or less....
Maybe you have to increase or decrease the the input voltage ....
If you have the 2.83V go back to 1kHz and measure again, when the DMM AC shows nearly the same value..... good, if not keep the reduced value in mind and use it in future for the
measurements with 1kHz.
I measure always first the 2.83V and the I look if my pot reduces the value to let us say secure 100-200mV for the laptop...
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Yes,it`s sinewave.
It sounds just fine.
I´ll contine to fiddle and see if I come up with sommething.
It sounds just fine.
I´ll contine to fiddle and see if I come up with sommething.
Here is one that I got when turning one off and checking the levels.
But I guess its that first one harmonics thats to large?
Yes its connected to speaker ground.
Here is one that I got when turning one off and checking the levels.
But I guess its that first one harmonics thats to large?
Yes its connected to speaker ground.
If I'm not mistaken it should instead look like this:
Only some 2nd and 3rd harmonics visible and the rest down below the noise floor.
Attachments
Looks like overload...
What is the value for soundcard input?
Lower the input value in Windows...
What is the value for soundcard input?
Lower the input value in Windows...
I don´t know the sens of the lineinput,it´s an Acer.
If I turn the pot down and just move it a little I can get the same spectrum that ollboll showed.
If I turn the pot down and just move it a little I can get the same spectrum that ollboll showed.
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