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Post by Deleted on Sept 24, 2013 17:33:35 GMT
have got the new opamps.
is there anything i need to double check before putting them in and firing it up?
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Post by Deleted on Sept 24, 2013 18:47:23 GMT
have got the new opamps. is there anything i need to double check before putting them in and firing it up? never mind , i took a chance, and IT WORKS  |
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Post by Deleted on Sept 24, 2013 18:49:33 GMT
  i may have to up the ante on the led resistors though! |
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Post by micmacmo on Sept 25, 2013 4:54:19 GMT
Wow, loving that enclosure.
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Post by Deleted on Sept 25, 2013 17:57:02 GMT
Wow, loving that enclosure. well it certainly adds a bit of colour to the desktop  not bad price either..... www.ebay.co.uk/itm/130686321564mine is the larger size! (the missus dont agree though) just got the labelling to do now. its like listening to a new set of headphones, brilliant bit of kit imo. Frans you are a genious |
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Post by Deleted on Oct 4, 2013 21:29:41 GMT
my filter seems to have developed a problem.
i turned it off earlier and it would not come back on.
switch was on, no led's and no sound.
i pulled out the mains plug, at this point the leds came back on,the sound came back then died off.
any suggestions?
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solderdude
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Post by solderdude on Oct 5, 2013 7:16:21 GMT
Check the input voltage of the filter.
If it drops as soon as the filter is on remove all op-amps and try again.
If the power is there again power down, wait 1 minute, insert an opamp and see if the voltages are correct (+/-12V) and repeat till all opamps are in there.
Some switch-mode power supplies like to see a minimal load and might become detective when it sees none.
a simple solution for that would be to mount a resistor between + and - BEFORE the power switch that draws the minimum required current (the manufacturer often specifies such if this is the case)
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Post by Deleted on Oct 5, 2013 8:03:58 GMT
Check the input voltage of the filter. If it drops as soon as the filter is on remove all op-amps and try again. If the power is there again power down, wait 1 minute, insert an opamp and see if the voltages are correct (+/-12V) and repeat till all opamps are in there. Some switch-mode power supplies like to see a minimal load and might become detective when it sees none. a simple solution for that would be to mount a resistor between + and - BEFORE the power switch that draws the minimum required current (the manufacturer often specifies such if this is the case) Hi Frans thanks for the reply. have not done the tests you suggest yet as i am not using a switch mode supply! usually when i shut my system down, after the pc is shut down i just switch everything else off at the wall socket. i never usually use the power switches on my filter, dac or amp. i have not had a problem doing it this way. i only stumbled across the problem with the filter yesterday when i was trying to find the cause of an odd "popping" sound. i was just turning each unit off, in turn, to see which one was causing the noise. the filter did not affect the noise,but then did not come back on either. |
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solderdude
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Post by solderdude on Oct 5, 2013 8:06:13 GMT
Seems like a power supply issue but could also be an electrolytic cap that has seen some over voltage, or an opamp gone bad.
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Post by Deleted on Oct 5, 2013 8:46:39 GMT
Seems like a power supply issue but could also be an electrolytic cap that has seen some over voltage, or an opamp gone bad. i think i have 2 separate issues as i am fairly sure i have just found the source of the popping noise. if you look at the pics i posted of my filter, in them you will see the filter on top of my dac, next to it is the antenna for my wifi. well the Ember is now where the filter was. what a numpty i feel now. |
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solderdude
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Post by solderdude on Oct 5, 2013 11:17:53 GMT
The Ember doesn't really like wifi nor mobile phones....
One needs to move antennae away from open frame amps.
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Post by Deleted on Oct 29, 2013 18:05:29 GMT
Frans
i have not tinkered with the pots in my filter at all so far.
i know you said to tweak them clockwise for more extension in the high end.
i have left mine fully counter clockwise. just curious to know where they should be set (roughly) for the flattest response?
thanks mate
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solderdude
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Post by solderdude on Oct 29, 2013 19:45:58 GMT
Between 10 and 20% so almost fully CCW is flattest response.
If you feel the need to set the pots at another value then this is no problem.
The pots only address (lowers/removes) the slight peak one gets after shelving.
You can simply play with the setting while listening and can always set it back to 10% or even fully CCW.
The biggest change comes from the shelving filter which is 'fixed'.
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Post by Deleted on Oct 30, 2013 19:32:48 GMT
had a play last night.
i did notice a very slight hiss as you tweak them clockwise.
have now returned to fully ccw.
the hiss did not ruin the sound but i found i just preferred the original ccw setting.
thanks Frans
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Post by Deleted on Oct 30, 2013 20:43:39 GMT
The Ember doesn't really like wifi nor mobile phones.... One needs to move antennae away from open frame amps. i take it a wireless mouse would be a problem too? |
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