I don't hear those problems, so I can't say whether the filters "fix" them. What I hear is more a slight over emphasis of mids and trebles and a slightly thin but tight and deep bass.
If you are using software that does upsampling try a 44.1 file upsampled to 172khz, and see if there is any difference between the two. If there is then different filters should help.
You probably need to do some troubleshooting, like checking the phase of your system with a test file, rather than just speculating that it might be subjectively out of phase. If you don't do the basics, you'll end up going in circles.
It's a good news. On my system there were a lacke of mid-bas (also dull) despite a good low and well toned bass (subjectivly below 80-100 hz I believe the bass are good but something in the mid-bass and medium-treble give a too thin tonal balance: notes are starving like a french without wine from 2 weeks ! plop ! ). As well a too thin medium and subjective climbing treble certainly due to a too flat EQ (straight right... well TOTAL DAC also choosed a right straight flat EQ to 20 k Hz so defintly not a bad choice from Soren).
If subjectivly the lacke of dynamics between notes and this medium trebles are fiuxed I defintly can live with this DAC + maybe the little traffo involved you talk about !
Maybe also some IIR EQ to tweak the much too flat curve : a little bump below 100 hz, little notch around 3k/4k ? Hummm personal taste of each owner.
At the end I find Pos also really kind to help as my understanding he is not involved by the dam1021 not to have it. He has a good understanding of those process, hey is RePhase not used with miniDSP... yes it is !
Ah, hope for us, final users, there will be a good mix between vendor interest and diy communauty sharing ! It seems it is seing Soren to be involved with digital tweakings ! If I can help to test final filters don't hesitate to ask (my speakers are a bowling boulevard for 3D Imaging and can rocks like Elvis Presley before being fat !)
If subjectivly the lacke of dynamics between notes and this medium trebles are fiuxed I defintly can live with this DAC + maybe the little traffo involved you talk about !
Maybe also some IIR EQ to tweak the much too flat curve : a little bump below 100 hz, little notch around 3k/4k ? Hummm personal taste of each owner.
At the end I find Pos also really kind to help as my understanding he is not involved by the dam1021 not to have it. He has a good understanding of those process, hey is RePhase not used with miniDSP... yes it is !
Ah, hope for us, final users, there will be a good mix between vendor interest and diy communauty sharing ! It seems it is seing Soren to be involved with digital tweakings ! If I can help to test final filters don't hesitate to ask (my speakers are a bowling boulevard for 3D Imaging and can rocks like Elvis Presley before being fat !)
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BTW a proof is better than speculating even if I have no problem of phase with all my others devices : a rega planar III, two DACs and A cd/SACD player ! With an other dac, the speakers punch so airs my Louis XV chair is moving... and I'm 90 kG !
trouble checking planned this afternoon, thanks to Dany66 for the files and link to test the phase of a system !
trouble checking planned this afternoon, thanks to Dany66 for the files and link to test the phase of a system !
I have no problem, I'm in phase. Very few differences between the right & the right Inside ! Same conclusion for the left. The insides sounds straight right and not toe in. The center is right on the center !
thanks for those files !
So my conclusion is the the soundstage is widther than all the others sources I have... creating an impression of hole in the middle then a localisation of the speakers on some of my ref reccordings I use for tests ! Maybe the room is involved ?... Well I will play with the speakers ! With some others reccording the voice is in the middle 😕. In fact I surmise the dam1021 to localize easily because also a subjective climbing treble (= flat EQ to 20 K hz).
Nothing problematic at home with some EQ and maybe softer EQ to come.
Well the judge of peace when I have a doubt is the Hadouk Trio Live at FIP; also : the astounding eyes of Rita by Anouar Brahem ! Soundstage à tous les étages !
If me or xhen I will learn to do it in rePhase I will low the trebles from 2 K hz or 4 K hz for a softer and thicker tonal balance !
thanks for those files !
So my conclusion is the the soundstage is widther than all the others sources I have... creating an impression of hole in the middle then a localisation of the speakers on some of my ref reccordings I use for tests ! Maybe the room is involved ?... Well I will play with the speakers ! With some others reccording the voice is in the middle 😕. In fact I surmise the dam1021 to localize easily because also a subjective climbing treble (= flat EQ to 20 K hz).
Nothing problematic at home with some EQ and maybe softer EQ to come.
Well the judge of peace when I have a doubt is the Hadouk Trio Live at FIP; also : the astounding eyes of Rita by Anouar Brahem ! Soundstage à tous les étages !
If me or xhen I will learn to do it in rePhase I will low the trebles from 2 K hz or 4 K hz for a softer and thicker tonal balance !
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Can you explain why do you think that is so bad?
It is probably a moot point for a reclocking DAC, but in general the problem with RCA connections are signal reflections caused by impedance mismatches. They can cause distortion of impulse edges resulting in additional jitter. If both receiving and transmitting ends are highly reflective, some part of the signal keeps bouncing back and forth for awhile. If the reflection from the receiver end is minimized, it does not matter so much that the transmitter is "reflective". It will not get any significant signal coming back from the receiver.
Regardless of the theories, my main source has a BNC output and my other DAC has BNC input, so BNC it is 🙂
It is far more subtle than that. Have a listen to the three different different filters that I uploaded yesterday on the main thread and you'll see what I mean. All the attention is on the region between maybe 17-8Khz and 22.05Khz and yet there is a subjective difference in bass and treble balance.
good to know your dac has correct phasing 🙂
I didn't have much time to listen really, but I had the MP filter in for a few hours and quiet enjoyed that. It seems the minimum phase filters are warmer sounding but less precise in the imaging. The minimum phase filter I made is -1dB vs the other filters so you need to nudge the volume up a little for a fair comparison.
fwiw: when I first joined DIYA in 2005 I was a big fan of an Israeli psytrance artist called Space Cat. my username was derived from that: space = spzzzz, cat =kt. 😉
https://www.youtube.com/watch?v=Wdq7xf1VhYE
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OK - thanks! I'm on earphones so imaging cant be judged anyway 😉
Did you try the filer by pos?
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Did you try the filer by pos?
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You all give me a doubt while I found all to be good ! In fact a too large width when you are at 3.5 m from your speakers give the impression you are at the first row of a musical event ! It's strange. But luckily it dépends on the reccordings, the best ones seems OK like the two I mentionned above !
Ahaha the link given by Dany was fantastic with the voice saying "I'm in right, etc !" Big laugh : I imagined the test 3D with the voice saying 'I'm in front of you at 3 feets and now I'm walking towards you" ! Ah yes my speakers are good for 3D as well 😀. Btw, i find the dam1021 to have a very good vertical stage as I already wrote ! The voice are not at the level of the carpet ! Dog says "thank you !"
Yes I beleive you, of course I read the main thread as well ! when you read Pos it seems simple, but I'm sure it is not in fact. Ask experience and Learning curve ! Maybe something to ask on the side of the reccording/mastering and studios world in some other forums ?!
And I assume you just talk about digital filters staying "flat". For sure moving to flat to a a personal non flat EQ becomes not universal anymore.
As says Hiraga (I believe he wrote that), when you want to correct the bass, start to move the trebles to hear something change ! It was just with speaker filter, so here I can imagine the complexity !
In fact trying to emulate a targett curves as POS did is a certainly a good starting point (and read it gave a good result)! But not sure a printing review is enough (precision of a screen capture ! ). Ah no one with the emulation of the PMD100 found by error somewhere on the Net 😱 ?
Is there something changing on the side of the bit depth also with 16 bits reccordings ? I mean 16 bits stays 16 bits ?!
ahaha, Space (trans) cat ! You are ready to listen to a little bit some more old artists : The Résidents, Gong, Kraftwerk and Devo at the dessert !
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Eldam - these filters are ruler flat up to almost 20khz - still they sound different.
Also, I think that whenrecording start to sound really different, some bad, some good, there is something interesting going on. Think about it - if most of your records sound the same, and "nice"... what is the chance that recordings over that past 25 years, made by different recording engineers, with different equipment (mic, preamps, mixers, A/Ds) would all sound "nice".. not so likely.
The most probable is that we should hear a lot of difference in distorsion, noise, clarity etc etc.
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Also, I think that whenrecording start to sound really different, some bad, some good, there is something interesting going on. Think about it - if most of your records sound the same, and "nice"... what is the chance that recordings over that past 25 years, made by different recording engineers, with different equipment (mic, preamps, mixers, A/Ds) would all sound "nice".. not so likely.
The most probable is that we should hear a lot of difference in distorsion, noise, clarity etc etc.
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I did. It's pretty good - perhaps more detailed//highs than my MP test. Linear Phase sounds brighter and more detailed to my ear. One of the things I'm listening to as a reference is the beginning of Miles Davis' "So What", it's a bit cilched perhaps but I find the piano and bass interaction and tonality a good way to compare filters. With the stock filter I find the piano and bass is pared back to the fundamental notes, and sounds a bit thin. I prefer a bit more body.
At the moment I'm interested in getting a feel for how different parameters influence the sound rather than finding the "best" filter of the current crop.
Agree that the DAM has a little edge with the pos filter. But its much more balanced in general than with stock. Need to listen to the the none amplified outouts in order to understand what makes up for what..
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I can only agree here
I'm found of tonal balance. and have the default to work always with the same reccordings to have a non moving reference years after years. Some reccords have default I know, some others good for tonal balance but terrific with soundstage, etc... This is not because your hear more default than the device is better or the reccording became bad ! If a cello which is sounding good on a device about its tonal balance (which cost you a lot of time to set up your system to targett that!) became bad... this is not mostly because you hear more things you were not able to hear with the supposed "always-nice-but-bader-older" devices ! .
You just must have a bench of reccordings for always benchmark the devices. It means you have to know it very well and that some into this bench are good enough in relation with the acoustic instruments in little or solo live acoustic events (which I often verify as I like music as everybody here).
So the tonal balance and the dynamic, like the microdetails stay poor stock but as it's a programmable dac and here are many talentuous hardware diyers (which I'm not) I surmise weekly progress to arrive at a good to very good result with time. I just have a doubt about the PS (not the noise but the lacke of dynamic ! hope it comes from the filters ! Easy to verify ? Just play NOS with no FIR 1 ? can it be switched off just for a test ? Here my lacke of time to dive into the description of the FGPA Soren made... I have a poor understanding of that !)
Mine is always to sell in the swap meet to buy time to myself as I guess it will take time for diyers and have already 2 others DAC (TDA1541 and AD1862) to finish and setup !
I will be also happy to keep it as it's a fantastic tools to learn about digital filtering and EQ ! If you have time to do it or the smart brain to do it fast 😀 (I surmise Soren to be x4 faster than I am !)
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It was more a case of what I liked at the time rather than what I had grown up with. Australia had/has a very strong outdoor dance party scene from the early-mid 90's and my younger brother was very into the scene. The first outdoor party I went to was Earthcore at Lake Eildon for NYE 1999/2000. Found this snippet on youtube of the main dance floor from that party....
https://www.youtube.com/watch?v=yuRWPPANI94
The sound systems they used were incredible. You could feel the bass vibrating the air in your lungs!
We had it too but the authority didn't like it because drugs and because often it was made in the fields without autorisation (so : accidents, etc !).
Here It has almost dissapear now ! But we have a huge electronic scene in Europe and concerts (without the boum boum side dance floor).
In France it begann with good quality with some men like Pierre Henry with such tune like Psyché Rock you certainly know (from: "Messes pour le temps présent" : asked by Maurice Béjart for dance !)
It becomes strange not to say bad with Jean Michel Jarre (a sort of electronic but anti industrial music , to be short an anti Kraftwek !). Now the electronic experimental scene is hided but still active in France, Belgium but don't now elswhere in Europe. When I talk about electronic Scene this is of course not the dance floor rave electronic scene which became very simplist and poor here... IMO !)
Ah received my Wave I/O to do more serious test and try to upsampling myself with sox !
Terrible as it is time consuming : have still a TDA1541 dac and a AD1862 to finish ! pfffffff !
Here It has almost dissapear now ! But we have a huge electronic scene in Europe and concerts (without the boum boum side dance floor).
In France it begann with good quality with some men like Pierre Henry with such tune like Psyché Rock you certainly know (from: "Messes pour le temps présent" : asked by Maurice Béjart for dance !)
It becomes strange not to say bad with Jean Michel Jarre (a sort of electronic but anti industrial music , to be short an anti Kraftwek !). Now the electronic experimental scene is hided but still active in France, Belgium but don't now elswhere in Europe. When I talk about electronic Scene this is of course not the dance floor rave electronic scene which became very simplist and poor here... IMO !)
Ah received my Wave I/O to do more serious test and try to upsampling myself with sox !
Terrible as it is time consuming : have still a TDA1541 dac and a AD1862 to finish ! pfffffff !
Hi Tyimo,
I am using the digital output board from dead sony cdp-555esd. I depopulated the board, flipped the transformer (not sure if polarity matters but I flipped to be safe), and repopulated according to hifiduino blog schematic. I am powering DAM from +-10V DC secondary that used to power the laser mechanism. SE direct outputs to volume pot then to existing variable outputs. So I have remote volume control. I have installed a 10k linear pot for digital volume too but haven't wired it yet. Old digital section has a separate transformer and PS still fully intact so if I can figure out how to get a signal to the TDA1541a I can compare the two in more or less the same implementation. Maybe pipe dream we will see...
Is it possible to use SE and Balanced outputs simultaneously, the goal being to send signals to subwoofer amps as well as main amps? All amps have volume control so levels don't matter within reason.
Here is the latest and hopefully final version of my input board and the front panel switch board.
The input board now contains optional schottky diodes to allow the use of a single pole switch for input selection. If using a common 3 pole, 4 position rotary switch these diodes are unnecessary. I have not actually tested input selection with the diodes.
The front panel board accepts Lorlin CK series switches, such as CK1051 or CK1061. Input selector and power LEDs can be soldered directly on the board, or 2 pin headers can be soldered in place of LEDs to allow different LED placement.
The alternative connection schematic shows how to connect volume pot, power led and single pole input selector switch directly to the "front panel" header.
The input board now contains optional schottky diodes to allow the use of a single pole switch for input selection. If using a common 3 pole, 4 position rotary switch these diodes are unnecessary. I have not actually tested input selection with the diodes.
The front panel board accepts Lorlin CK series switches, such as CK1051 or CK1061. Input selector and power LEDs can be soldered directly on the board, or 2 pin headers can be soldered in place of LEDs to allow different LED placement.
The alternative connection schematic shows how to connect volume pot, power led and single pole input selector switch directly to the "front panel" header.
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