Yeah I would love to hear some of that stuff. Honestly I think I would have a hard time telling the difference. My ears are certainly not golden by any stretch (thank god!)
But it really goes to show that something done right be it tape, reel to reel, mp3, cd, vinyl, etc. can sound really damn good! I imagine it's much easier (and cheaper) however to get nice sounding digital.
Next meet up I should get you to record some Prodigy (the artist I know best ) onto tapes and I'll see if I can tell any difference.
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Regarding Class D amps - i'm waiting on two cheap chiniese class D amps - YJ IRS2092 200W Class D Amp Mono Amplifier Board YJ-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group
I ordered two of the powersupply from this thread http://www.diyaudio.com/forums/class-d/281698-abletec-53v-dual-rail-450w-supply-20-a.html to go with the amp. (wasn't such a good deal with the cnd dollar and shipping but I ordered it on a whim) Got two so I had a extra to play with (compare mono blocks vs two on the same psu) or build a second amp if it's a success.
I'll see how it sounds compared to the lm3886. It's no hyperx but it's also not even a 10th of the price 🙂
Oh, Tyler
The PCB manufacturer I had mentioned is Hackvana: It's nirvana for hackers. the website sucks but all that is really relevant is https://docs.google.com/document/d/1p6FH25ltGpzJQ5_8fbflDukqEKghiEcpuhJpngth2Is/edit which has their pricing and capabilities. I haven't got around to ordering from them yet - planning to for my PGA2311 board.
Their channel is #hackvana on irc.freenode.net - the guy is around and always willing to answer questions. It's also a cool channel to talk with folks on - lot of guys doing really cool stuff and they are pretty welcoming.
The PCB manufacturer I had mentioned is Hackvana: It's nirvana for hackers. the website sucks but all that is really relevant is https://docs.google.com/document/d/1p6FH25ltGpzJQ5_8fbflDukqEKghiEcpuhJpngth2Is/edit which has their pricing and capabilities. I haven't got around to ordering from them yet - planning to for my PGA2311 board.
Their channel is #hackvana on irc.freenode.net - the guy is around and always willing to answer questions. It's also a cool channel to talk with folks on - lot of guys doing really cool stuff and they are pretty welcoming.
Newbie at the Ottawa Openhouse
Hello to all the great people presenting and attending the DIT Meet.
It was my first time attending a diyAudio Meet and was very glad that I came. Everyone was friendly and I got to check out some very interesting projects. Thank you all for sharing.
You've inspired me to proceed with my bookshelf speaker project.
Thank you!
Hello to all the great people presenting and attending the DIT Meet.
It was my first time attending a diyAudio Meet and was very glad that I came. Everyone was friendly and I got to check out some very interesting projects. Thank you all for sharing.
You've inspired me to proceed with my bookshelf speaker project.
Thank you!
Further to attendance Q & my post #240:
My collection indicated that there were 28 attendees, but I only recorded the (first) names for 26 attendees (so I missed 2 names). Either way, I think that is a good turnout for our event & the size of the hall.
- Ron
My collection indicated that there were 28 attendees, but I only recorded the (first) names for 26 attendees (so I missed 2 names). Either way, I think that is a good turnout for our event & the size of the hall.
- Ron
I was thinking about 30 people.
Awesome.
We could accommodate a few more quite easily.
One thing we do not have is a contact list for everyone that might be interested in another meet.
If people would be willing to email myself or John ( bearberry) We could develop a master list and keep people informed in a much easier fashion.
Awesome.
We could accommodate a few more quite easily.
One thing we do not have is a contact list for everyone that might be interested in another meet.
If people would be willing to email myself or John ( bearberry) We could develop a master list and keep people informed in a much easier fashion.
Playlist.
I cut out some screen prints of the playlist I put together for the demo. When every one was in the room I started playing around Me and My Guitar by Tep No at the bottom of page 1.
I cut out some screen prints of the playlist I put together for the demo. When every one was in the room I started playing around Me and My Guitar by Tep No at the bottom of page 1.
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Regarding my previous post: all songs are on Spotify.com and were downloaded for the demo. There is an option for up to 3,333 songs to be played offline that I used.
Grant.
Grant.
Awesome, thanks!
Fusion PCB, customize PCB prototype | Seeedstudio is the one I use, but Hackvana seems more flexible.
Tyler
Fusion PCB, customize PCB prototype | Seeedstudio is the one I use, but Hackvana seems more flexible.
Tyler
If anyone is interested in a DAC, I can assemble one for you at cost. Parts were $270+tax (I can update the BOM and get the current price), and you'll need transformer(s) and an I2S source (I used DIYINHK XMOS isolated, $100 USD). I'm going to put together an SMD oven, so it won't be (messily) hand soldered like mine.
Just send me a private message to keep this thread clean.
Just send me a private message to keep this thread clean.
Can you have a DAC output voltage setting higher than the present version?
I would need about 4 volts for a full signal swing on some of the amp modules I'm working with?
I never really saw a schematic, usually it is a resistor calculation.
I would need about 4 volts for a full signal swing on some of the amp modules I'm working with?
I never really saw a schematic, usually it is a resistor calculation.
I found out that a single resister per channel can increase the single ended output gain by whatever you want. I can make the differential output higher too if necessary.
Late replies, been travelling for work, and the whip just stopped cracking for a few minutes...
Tyler, I posted a few comments and pictures here at:
http://www.htguide.com/forum/showth...ore-400-Amplifier-discussion-amp-Build-thread
These explain my rationale for using the bigger supply and the nuttiness of the harness. BTW, if you're interested, it'd be neat to trade DACs for a few weeks. Mine doesn't have a HD driver so that may be a limitation. But I think it'll create a great opportunity to baseline both designs then go back to other version. Best way to tell pros/cons
If anyone's interested, here's the write up for the JR149 redesigns. Interesting part to me is that the frequency response doesn't reflect what it really sounds like. To me it sounds more neutral with this than the original "flat" design
http://www.diyaudio.com/forums/multi-way/269455-jr149-redesign.html
Also
Mark, thanks for the tunes, especially the ones created without big long metal tubes
John, thanks for the pre-amp details. I'll have to look into this. If I build it, I'll probably go dual mono with a couple 10 turn pots instead of a balance control. Infinite balance adjust-ability, but a bit more PITA to use (I'm used to it with my dual mono passive)
Big John, if you ever want to hear the Napoleons in my small room with the final design, let me know, I think it'd be a surprise
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