My soundcard examples are a couple years old, but you get the idea and I doubt the situation has changed much, as the market and physics define the performance.
You seem to know what you have discussed, so tell him how to go about doing what he wants done.
And after my post, he seems to have cleared his throat, so to speak, and become more lucid about his intentions.
So everybody has a clearer idea of the final intended outcome.
And after my post, he seems to have cleared his throat, so to speak, and become more lucid about his intentions.
So everybody has a clearer idea of the final intended outcome.
The COSMOS will accept single ended inputs on its XLR inputs as well I think, but thats a solvable problem anyway if not. Ah I thought there was a matching DAC, there is a COSMOS DAC too, not as dinky. Not sure if its available yet.
I'm guessing you hadnt realised, or at least considered you would need an ADC (Analogue to digital convertor) for your phono source? So your DIY dacs and most dedicated dacs usually dont include one.
I'm guessing you hadnt realised, or at least considered you would need an ADC (Analogue to digital convertor) for your phono source? So your DIY dacs and most dedicated dacs usually dont include one.
Actually, this project is looking similar to the mixing consoles in recording studios.
Many inputs, one output. Most are digital, it seems they have been like that for decades.
Worth looking at how they work, or possibly find one going up for sale?
Save everybody some time and effort.
Many inputs, one output. Most are digital, it seems they have been like that for decades.
Worth looking at how they work, or possibly find one going up for sale?
Save everybody some time and effort.
Last edited:
you are doing it again ...
Stop being so control-freaky.
I brought it up, the OP had to tell you politely to stop trying to force your way, you said you were backing out and you came straight back with exactly the same thing
Stop being so control-freaky.
I brought it up, the OP had to tell you politely to stop trying to force your way, you said you were backing out and you came straight back with exactly the same thing
No, he needs one input working at a time, from many.
At least, that is my impression.
So in a console, I can do that, can I not?
Leave the others at zero, and raise the selected input to the correct level, and feed the signal forward to the next section.
And be able to do that for different inputs.
Of course, in a living room, it will look like something Dr. Frankenstein did on an off mood day!
But seriously, he wants to control the input from many types of source, and feed the next section, and finally listen to music.
Getting all those to work together will take effort, time and money.
Similar, at least in principle:
A mixing console allows more than one signal to be mixed, but can it not be used as described above?
Or is there another name for input selector in recording studios, that may be more appropriate.
At least, that is my impression.
So in a console, I can do that, can I not?
Leave the others at zero, and raise the selected input to the correct level, and feed the signal forward to the next section.
And be able to do that for different inputs.
Of course, in a living room, it will look like something Dr. Frankenstein did on an off mood day!
But seriously, he wants to control the input from many types of source, and feed the next section, and finally listen to music.
Getting all those to work together will take effort, time and money.
Similar, at least in principle:
A mixing console allows more than one signal to be mixed, but can it not be used as described above?
Or is there another name for input selector in recording studios, that may be more appropriate.
Last edited:
there will never be a situation where 2 inputs are mixed. having more than one input and an output doesnt make a mixer. that is a MUX, or more simply, switch.
Exactly, perhaps some switches are used in the recording industry and the design can be used here as a reference?
How can you mix signals when the others are at zero, and only the selected one is at correct level?
How can you mix signals when the others are at zero, and only the selected one is at correct level?
Last edited:
Anyway it was just a suggestion, let him do what he thinks is suitable.
He has not told us the output side details like amp and speakers.
He has not told us the output side details like amp and speakers.
Thank you for the comprehensive reply and the suggestions! I will familiarize myself with IVX's products. Only one question, what do I need an ADC for? The DAC, BT receiver and the Cornet3 all output analogue signal, which remain analogue through the input selector and volume control. The DSP obviously converts it to digital and back to analogue, but happens within the confines of that unit.Today, I would recommend the COSMOS ADC, from one of our Members IVX, which is designed for measurement, but will do just fine here. USB C powered and very nice performance, some 50dB better than the Soundblaster ADC input. For the dac, you could use one of his very competitive DACs while wipe the floor with the above for $100, especially when calibrated with the COSMOS. There are many options for DAC, thats just an easy suggestion as its cheap, IVX is one of the few designers in the more entry level especially that has solved the ESS IMD distortion hump problem. I will make some more DIY suggestions on dacs, including some you may wish to build, bare PCBs etc, but I would recommend the COSMOS ADC regardless. The little DAC dongle looks like a toy and uses an ESS chip that was originally designed for high end smart phones, but punches well above its weight and does a good 10-15dB better than even the metric HALO and UAD high end studio PCI gear mentioned.
Looking forward to some DIY DAC suggestions!
I have to say, I struggle to understand how we get from a preamp concept to a recording studio mixing console... 😀 I mean, in the end is just an input selector and volume control with a few additional bells and whistles. No need for channel mixing, no need for manipulating the sound in any way. Well, besides the DSP obviously, but in my case it is more or less a set-and-forget deal. I'm looking for a very simple user interface: power switch, input selector, volume control. That's it.
Anyway, I appreciate the discussion!
Anyway, I appreciate the discussion!
Mostly because the ADC in the minidsp and its power supply is pretty average. myself I would use something better for the aforementioned reasons. I would then feed the output of the hagerman to the ADC and its digital out to the minidsp. Do you own the minidsp already? I would probably lean more towards their new FLEX units. reviewed here. that would kill 2 birds with one stone and you could avoid the extra ADC and honestly, the DAC, as its built in ADC and DAC are far more capable. Need to check if its dirac capable though. I need to familiarise myself with current dac projects before I could make reasonable suggestions. Honestly there arent that many great projects where you start from scratch; as most people arent capable/equiped for the finer SMD soldering. Miros AD1862 design is pretty decent. the buffalo dacs are possibly overkill and expensive, with their output not being so much better than the 100 dollar dac from IVX. anyway i'll have a look around tomorrow and hit you back; its late here in OZ. There are a few gotchas with your setup, particularly the khozmo, but I need to think about how i'll explain that in simple terms.
It was a requirement of too many inputs compared to the four or so in a regular stereo.
And I did say switch, see Post #27...
And different devices have different sound levels.
So a more flexible device, possibly available cheaply was suggested.
And I did say switch, see Post #27...
And different devices have different sound levels.
So a more flexible device, possibly available cheaply was suggested.
Yes, you said switch after you were corrected, twice ... you tried to still call it a mixer without a mixer function after the first time, then moved to console, which was still wrong. Sorry mate, do you think you should maybe stop digging?
the khozmo passive pre has an input selector and volume control. no need for an extra mixer. He doesnt need a mixer. If he bought another ADC, especially the cosmo, that would require another input on the selector, as it only has one set of inputs, perhaps thats what you were getting at, but yeah, you wouldnt buy a mixer. I would probably be looking to do away with the standalone bluetooth and have that integrated into the DAC or DSP, or buy one that has a digital output, rather than changing everything around to suit a bluetooth module.
edit, no. you wouldnt need more inputs even with the ADC
Hagerman -> Khozmo -> ADC - minidsp digital input
bluetooth module -> Khozmo -> minidsp, or bluetooth -> khozmo -> ADC -> minidsp digital input
wouldnt waste too much resources n that bluetooth module
still works.
re the FLEX, That way, you could still build it into one box, but alternatively, build the hagerman and khozmo into one box and just connect the output of the Khozmo to the minidsp flex and thats it, all your needs sorted. you can still do somewhat better with other modules, but its pretty streamlined. I personally own the minidsp 2x4HD, which is the same hardware as the DDRC-24 and I would not use its ADC for anything meaningful. the dac section isnt amazing either, but its passable. the FLEX is basically a 4 channel SHD as far as hardware, without the streamer, but runs the 2x4HD/DDRC-24 plugin.
anyway bedtime, dac project suggestions tomorrow.
the khozmo passive pre has an input selector and volume control. no need for an extra mixer. He doesnt need a mixer. If he bought another ADC, especially the cosmo, that would require another input on the selector, as it only has one set of inputs, perhaps thats what you were getting at, but yeah, you wouldnt buy a mixer. I would probably be looking to do away with the standalone bluetooth and have that integrated into the DAC or DSP, or buy one that has a digital output, rather than changing everything around to suit a bluetooth module.
edit, no. you wouldnt need more inputs even with the ADC
Hagerman -> Khozmo -> ADC - minidsp digital input
bluetooth module -> Khozmo -> minidsp, or bluetooth -> khozmo -> ADC -> minidsp digital input
wouldnt waste too much resources n that bluetooth module
still works.
re the FLEX, That way, you could still build it into one box, but alternatively, build the hagerman and khozmo into one box and just connect the output of the Khozmo to the minidsp flex and thats it, all your needs sorted. you can still do somewhat better with other modules, but its pretty streamlined. I personally own the minidsp 2x4HD, which is the same hardware as the DDRC-24 and I would not use its ADC for anything meaningful. the dac section isnt amazing either, but its passable. the FLEX is basically a 4 channel SHD as far as hardware, without the streamer, but runs the 2x4HD/DDRC-24 plugin.
anyway bedtime, dac project suggestions tomorrow.
Last edited:
Ah, now I see what you mean about the ADC. That makes sense.Mostly because the ADC in the minidsp and its power supply is pretty average. myself I would use something better for the aforementioned reasons. I would then feed the output of the hagerman to the ADC and its digital out to the minidsp. Do you own the minidsp already? I would probably lean more towards their new FLEX units. reviewed here. that would kill 2 birds with one stone and you could avoid the extra ADC and honestly, the DAC, as its built in ADC and DAC are far more capable. Need to check if its dirac capable though. I need to familiarise myself with current dac projects before I could make reasonable suggestions. Honestly there arent that many great projects where you start from scratch; as most people arent capable/equiped for the finer SMD soldering. Miros AD1862 design is pretty decent. the buffalo dacs are possibly overkill and expensive, with their output not being so much better than the 100 dollar dac from IVX. anyway i'll have a look around tomorrow and hit you back; its late here in OZ. There are a few gotchas with your setup, particularly the khozmo, but I need to think about how i'll explain that in simple terms.
I do own the MiniDSP already. Could probably sell that if it came to that.
That FLEX unit is actually quite interesting. I'll have to take a closer look. That could pretty much replace the entire preamp if I could live with the fact that there is no room for more analogue inputs besides the Hagerman. They have even decided to make all the connections in the back unlike the DDRC24, which makes it actually usable as preamp/input selector. Yeah, have to research this one, thanks for pointing me towards it!
But, isn't that the job that any preamp does? And they do have different gain levels, again completely normal in the audio world, no?That is a lot of devices to match.
Have fun, and enjoy the music.
- Home
- Source & Line
- Digital Line Level
- Preamp project, DAC+BT+phono+Dirac