I’m looking for nice schematics for a preamp with 5.1 decoder Dolbydigital/DTS and a digital input.
I’m going to build 5 nice poweramps for my cinema.
Regard
Progg70
I’m going to build 5 nice poweramps for my cinema.
Regard
Progg70
Closest I can come up with is:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=63786
In progress though.
http://www.diyaudio.com/forums/showthread.php?s=&threadid=63786
In progress though.
Thanks!
Interesting reading but I can’t get the red tread for the project.
I need something more concrete like a full schematic and a good
list for parts now it’s too theoretical I think.
regard
Progg70
Interesting reading but I can’t get the red tread for the project.
I need something more concrete like a full schematic and a good
list for parts now it’s too theoretical I think.
regard
Progg70
I have been trying to follow this thread, but after all is said and done I still can't see why I would go for one of these say compared to the creative decoder which can be had for $100+
What features sets your plan appart from these types of units?
Except the LCD pannels?
What do you think your total DIY kit is going to come down to in dollars?
Or is this merely an excersise to see if this can be done on an advanced DIY basis?
What features sets your plan appart from these types of units?
Except the LCD pannels?
What do you think your total DIY kit is going to come down to in dollars?
Or is this merely an excersise to see if this can be done on an advanced DIY basis?
Well, today you can buy a cheap DVD-player with decoders for 200$ in Sweden.
Perhaps you can use one of these and take de decoder.
I like to build and have my look on things.
Then usually you can have benefits to build your self, the companies’ need there part of money.
Especially in the power supply area you can get out better then commercial P because the copper is like gold and so on…
And off course it’s nice to build things that the family can use and they say “daddy have built that”.
regard
Progg70
Perhaps you can use one of these and take de decoder.
I like to build and have my look on things.
Then usually you can have benefits to build your self, the companies’ need there part of money.
Especially in the power supply area you can get out better then commercial P because the copper is like gold and so on…
And off course it’s nice to build things that the family can use and they say “daddy have built that”.
regard
Progg70
Progg70 said:
Good luck, you won't find anything DIY with DD or DTS. Both require licensing to use, though you can get around the DD issues by looking for AC52. Most of what you'd find with that all use a full blown computer and sound cards. If you're lucky you'll find a small handful of chips on some manufacturers websites that'll do the decode, but you either can't get the chips or they don't come with the software on the chip, but in a separate memory chip.
Oh, and doing a search before posting would have pointed you at two or three threads that would have told you all of this. (It comes up every so often)
Your best bet is to get a used Technics SH-AC500. Remote volume control and source switching, up to 4 digital ins, DD and DTS, and analog pass-through.
Or buy a used DD/DTS receiver with busted power amps and add RCA outs.
Or buy a used DD/DTS receiver with busted power amps and add RCA outs.
I was thinking along the same lines of using older/cheaper newer equipment and modding it. The trick is to start off with something worth modding first.
Does anyone have any recommendations for receivers with good potential? Or known good decoding chips and board layouts of the receiver.
These receivers should switch video and have prempp level outputs. The amp stages should be guttable to make space for additional power supplies and other mods. Alas I fear most lower priced ( maybe all) newer units are SMD.
A bonus with this route would be a remote control capability.
Does anyone have any recommendations for receivers with good potential? Or known good decoding chips and board layouts of the receiver.
These receivers should switch video and have prempp level outputs. The amp stages should be guttable to make space for additional power supplies and other mods. Alas I fear most lower priced ( maybe all) newer units are SMD.
A bonus with this route would be a remote control capability.
Schaef; missing something?
And you have a nice attitude!!! Schaef.
If you have notice thing happens out there.
Half price for a plasma you bought for six month ago…
It’s interested you put a lot of energy to post in this string; missing something?
Progg70
And you have a nice attitude!!! Schaef.
If you have notice thing happens out there.
Half price for a plasma you bought for six month ago…
It’s interested you put a lot of energy to post in this string; missing something?
Progg70
5.1 surround chips arent that easy to get, even if u get ur hands on something like STA310 it wont be that easy a job to control it through mcu unless u have advanced programming skills and making pcb of the quality that could accomodate STA310 and then solder it to that board, you'd be better off with DVD player.
Re: Schaef; missing something?
Well, as you're seeing from the other suggestions on this list, its because right now, its not easy. Yes, I know things change over time, unfortunately, the way the tech industry is going is to charge for every piece of IP they can. I would absolutely love to design/build my own DD/DTS pre-amp, unfortunately, without extensive programming and DSP work, its not going to happen for the DIY'er. I can point you to some open source projects that do the DD on a PC. (They had a partial DTS decoder, but I believe DTS stepped in and told them to back off) You're just not going to find a ready-made project anywhere.
I'm sorry if I sound negative, but its just that his has been beaten to death several times, and its always the same answer, ain't gonna happen. Especially with coming in and demanding a complete project with everything available, and a quick search would have shown the problems in the industry.
So, sorry if its not what you want to hear, but its what you'll find.
Progg70 said:And you have a nice attitude!!! Schaef.
If you have notice thing happens out there.
Half price for a plasma you bought for six month ago…
It’s interested you put a lot of energy to post in this string; missing something?
Progg70
Well, as you're seeing from the other suggestions on this list, its because right now, its not easy. Yes, I know things change over time, unfortunately, the way the tech industry is going is to charge for every piece of IP they can. I would absolutely love to design/build my own DD/DTS pre-amp, unfortunately, without extensive programming and DSP work, its not going to happen for the DIY'er. I can point you to some open source projects that do the DD on a PC. (They had a partial DTS decoder, but I believe DTS stepped in and told them to back off) You're just not going to find a ready-made project anywhere.
I'm sorry if I sound negative, but its just that his has been beaten to death several times, and its always the same answer, ain't gonna happen. Especially with coming in and demanding a complete project with everything available, and a quick search would have shown the problems in the industry.
So, sorry if its not what you want to hear, but its what you'll find.
Just a thought really: Is it possible to take the decoder board from a cheap dvd-player with built-in decoder and use that separately (for DD at least)? The only problem I can think of is that the board isn't fed the same type of signal in from the original drive as it would be from an external transport🙁
/U.
/U.
The same issues ensues re: the programming and surface mount components. The best bet I suspect is to find a good platform to modify. That way, the programming is taken care of.
once i did came across this chinese manufacturer who was selling DTS/DD assemblies for AVR, somehow i lost the link and lost my interest after continous effort of trying to find a vendor who sells STA310. u could try locating this sort of manufacturers, may be u ll be able to help a lot of others who are trying to make similar attempts.
Hi all,
I say you design 🙂smash: ) your own surround. About an year back i was in the process of building a 5.1 dolby Prologic II decoder. You can either do it using an analogue circuit (Which i tried(designed a major part) , but is very difficult i could not make it because it is very expensive to build:- PCB, log amplr etc). Another approach (i have yet to try this) is to burn a DSP processor (ADSP eg😉 ). The algorithm for the decoding is not hard to learn but may need some tweaking
. You can get free samples of texas dsp processor (not sure whether is it is available now
). The project is challenging but once u have done with it you will feel very satisfied 😀 . Frankly speaking I have never gone thru the DTS manual so cannot say about it.
Thanx,
Venki.
I say you design 🙂smash: ) your own surround. About an year back i was in the process of building a 5.1 dolby Prologic II decoder. You can either do it using an analogue circuit (Which i tried(designed a major part) , but is very difficult i could not make it because it is very expensive to build:- PCB, log amplr etc). Another approach (i have yet to try this) is to burn a DSP processor (ADSP eg😉 ). The algorithm for the decoding is not hard to learn but may need some tweaking
. You can get free samples of texas dsp processor (not sure whether is it is available now ). The project is challenging but once u have done with it you will feel very satisfied 😀 . Frankly speaking I have never gone thru the DTS manual so cannot say about it.Thanx,
Venki.
5.1 decoder
Regarding decoding in 5.1 DD/DTS Analog Devices have a very positive solution (like evaluation board)etc. I have seen lot of companies which r little less expensive & cheaper-chinese Home theater system use cirrus chip (crystal).Both AD/CIRRUS chip details can be easily downloaded from their respective sites or one can even try buying a simple optical-in home theater (chinese) and use only its decoder board and its remote for any home built power blocks.
Let's wait and see for better options.
Prabhu.
http://www.analog.com/processors/platforms/DTS_5.1_Decoder.html:cool:
Regarding decoding in 5.1 DD/DTS Analog Devices have a very positive solution (like evaluation board)etc. I have seen lot of companies which r little less expensive & cheaper-chinese Home theater system use cirrus chip (crystal).Both AD/CIRRUS chip details can be easily downloaded from their respective sites or one can even try buying a simple optical-in home theater (chinese) and use only its decoder board and its remote for any home built power blocks.
Let's wait and see for better options.
Prabhu.
http://www.analog.com/processors/platforms/DTS_5.1_Decoder.html:cool:
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