LPF
They are part of low pass filter, see post #3686 , and I upgraded them with wishay zfoil resistors + 470pf polystyren cap replaced 1,2 nf ceramic.
cheers
Danny
can anyone enlighten me to what this resistors are for
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They are part of low pass filter, see post #3686 , and I upgraded them with wishay zfoil resistors + 470pf polystyren cap replaced 1,2 nf ceramic.
cheers
Danny
cheers
thanks
i sort of understand
what value resistors did you replace with?
how did find the correct values was just trail and error?
how much improvement was there?
can we bypass the lpf ?
They are part of low pass filter, see post #3686 , and I upgraded them with wishay zfoil resistors + 470pf polystyren cap replaced 1,2 nf ceramic.
cheers
Danny
thanks
i sort of understand
what value resistors did you replace with?
how did find the correct values was just trail and error?
how much improvement was there?
can we bypass the lpf ?
For anyone who might be interested, the group buy for DAM1021 input, switch and muting/output boards is now open. For details of the boards please see the first post of the GB thread and the preliminary documentation.
Please sign up on the GB spreadsheet and send me your Paypal ID by PM for invoicing.
This GB round is open until Nov 1st, 2015. All orders paid by this date will receive a 10% discount from the listed prices. Boards will still be available for purchase after Nov 1st at full price.
Please sign up on the GB spreadsheet and send me your Paypal ID by PM for invoicing.
This GB round is open until Nov 1st, 2015. All orders paid by this date will receive a 10% discount from the listed prices. Boards will still be available for purchase after Nov 1st at full price.
hi, someone uses the battery to power the dam1021 ? which uses batteries , scheme used ? Battery powered sounds better ? Thanks for the answers .
This filter is alittle better,but I still think the midrange is a little to much.
thanks
i sort of understand
what value resistors did you replace with?
how did find the correct values was just trail and error?
how much improvement was there?
can we bypass the lpf ?
Same as original ones 13R / 0.01. I do believe these two resistors are in MSB chain (like it is 100R in attached diagram of 8bit DAC)
Speed and uMicro details are vastly improved.
Taking out capacitor will basically disable LPF (no lpf).
Søren have done this, way back (se post #143 and #144 on page 15) when he was testing speed of DAM. It is good idea to ground lifted pin 3 of "LME49710 buffers " .
cheers
Danny
Attachments
i had thought the 13rs were after the msb chain and would be a worthy experiment to short across them and remove the capSame as original ones 13R / 0.01. I do believe these two resistors are in MSB chain (like it is 100R in attached diagram of 8bit DAC)
Speed and uMicro details are vastly improved.
Taking out capacitor will basically disable LPF (no lpf).
Søren have done this, way back (se post #143 and #144 on page 15) when he was testing speed of DAM. It is good idea to ground lifted pin 3 of "LME49710 buffers " .
cheers
Danny
This filter is alittle better,but I still think the midrange is a little to much.
yes, reality in the convenience of your own living room can be a little to much initially.
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This filter is alittle better,but I still think the midrange is a little to much.
Did you power cycle after the download of the new filters?
//
Hi all
As you can see in the first image with Windows7 and ExtraPutty, "filters" and "filters all" is working good.
In the second image MacBookPro and FastSpring.com program, typing
"filters all" it's ok, no result typing "filters"
Any idea??
View attachment 509521
View attachment 509522
"filters" command lists only the currently active filters. In the second image DAM1021 is not locked to a signal (no LXXX output), therefore no filters are active and it displays an empty list.
DAM1021-12 rev.2 sometimes loses lock on input signal during playback. There is 2-3 seconds no sound and then everything is OK!
Does anyone else have this problem or?
USB-I2S is Diyinhk.
I am also having this issue lately. Seems to help a bit if you explicitly specify the input via the serial port.
Intermittent Lock On Playback
Intersting, I've still a V1 board and with the latest firmware am finding it often will not lock. Select a track, I hear about 1/4 second sound, then nothing. Seems to happen more with the higher sample rates...?? Most annoying!
Intersting, I've still a V1 board and with the latest firmware am finding it often will not lock. Select a track, I hear about 1/4 second sound, then nothing. Seems to happen more with the higher sample rates...?? Most annoying!
Maybe an other streamer, or app?Intersting, I've still a V1 board and with the latest firmware am finding it often will not lock. Select a track, I hear about 1/4 second sound, then nothing. Seems to happen more with the higher sample rates...?? Most annoying!
I am using here Vortexbox for a long time, and don't recognize this.
Also with the V1 version.
@normundss
Thank you normundss, but I can’t understand why this happens.
I mean that why with the PC, DAM locks “filters”command and with the Mac is not locking? Is a question of settings in the FastSpring.com program ?
Thank you normundss, but I can’t understand why this happens.
I mean that why with the PC, DAM locks “filters”command and with the Mac is not locking? Is a question of settings in the FastSpring.com program ?
Thank you normundss, but I can’t understand why this happens.
I mean that why with the PC, DAM locks “filters”command and with the Mac is not locking? Is a question of settings in the FastSpring.com program ?
By locking he means audio signal locking (i.e. the DAC has locked to an audio stream and plays music)
The filters command shows the currently used filters by the DAC but if no sound is playing (i.e. the DAC lock led is blinking) then no filters are used.
Thank you. I tested and is Ok. I will send you PMBy locking he means audio signal locking (i.e. the DAC has locked to an audio stream and plays music)
The filters command shows the currently used filters by the DAC but if no sound is playing (i.e. the DAC lock led is blinking) then no filters are used.
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