PE Cnote Bookshelf Speakers Build

J

Jdunk54nl

Noob
I decided since I am spending so much time in my office lately, I needed to build a better speaker system. Right now it has the polk RM8 surround sound system and they are terrible to say the least.

I will have about $200 total after I have them finished for the speaker build.

Here is an objective review of them from another site and seem very promising:
https://www.audiosciencereview.com/...arts-express-diy-c-note-speaker-review.12693/

I also added a 0.22 uf capacitor across L2 based on these results from PE tech forums Cnote Designer Chris P:

Here is before:
NJPh9SjS_o.jpg


Here is after with 0.22uf: It knocks down the 7000hz to 10,000hz hump in the woofer.
FSxVBloK_o.jpg





Here are some pictures of the build so far:
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AF1QipNr6Y1AyhAHzd-RCeKoY9XEkhCGuLMO-4McXCEB


ACtC-3cHfiu4yTzlraeDPBaCn-LhVyxFnchDATIJ_fElI106R5wv-MFmEGXZsWBbwFiAi1pJvEfUx4kMJhVqswDOrnLupOyfAHCKSeK9SHnQxJxlxogODKkT9c-peU2BpUpBvpwcGH88ucytXaiSxMMtcNLq3g=w799-h1065-no




I used 3/4" 3 layer sound absorber from parts express: https://www.parts-express.com/sonic...nd-damping-material-with-psa-18-x-24--260-530

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This is the crossover design. It should be a 2nd order on the woofer and 3rd order on the tweeter if my understanding is correct:


ACtC-3ce9q3tWOmm6qI6OpC50u7gGrn9wnGwBtjHdl_VrMim3-xnm4DYlfLEZ8vwbftfHeBVyhiKyaWrIa57Cx7sdC9DsBgoc_bGmmdsdYF-WsaqEP9M8EyX3i2QhA6R6BwjIuHpvJRTyLesQfSLSYQpND4THw=w569-h424-no







ACtC-3dSakWgnqFx_X84xie5XUISjYE31jXfwDyT27cPWMieiQ8zw0LyewhBIgtdTadGXfi0psFCKcxt9bo1SCh3weTa3Md0QHlEHJPcPSQdpiafXViTF7g9-wBQZcIdaBhBNSrypWtWZ75doNPThwVOgntTYg=w1420-h1065-no



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I still need to sand it down, drill the 2" hole in the back for the round speaker terminal, and then I am going to cover it in white melamine. I wanted to try this stuff and this gave me an excuse:
https://www.parts-express.com/band-it-white-melamine-24-x-96-iron-on--260-034
 
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I will also be using this to play with sigma studio more by using this Dayton Kernel dsp and 2 in 3 out board (~$30):

https://www.parts-express.com/dayto...-ke-kernel-dsp-expansion-2-in-3-out--325-1300


This is very similar to what I would like to try which is the ADAu-1466 eval board from analog devices. Justin Zazzi uses it in his home theatre and has really good results. Andy W. also uses sigma studio for his entire car.

https://www.analog.com/en/design-ce...on-boards-kits/EVAL-ADAU1466.html#eb-overview

Or the 1467 which also has some cool daughter board options....
https://www.mouser.com/ProductDetail/Analog-Devices/EVAL-ADAU1467Z?qs=BZBei1rCqCCDsBku5vHNkw==
 
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For whatever reason your google pictures aren't working. Other users of google pictures have had the same trouble in the past. Just shows up as a block with a gray circle in the middle.
 
Notloudenuf said:
For whatever reason your google pictures aren't working. Other users of google pictures have had the same trouble in the past. Just shows up as a block with a gray circle in the middle.
Click to expand...

Oh good, it's not just me!

Jdunk, thank you for posting as attachments.
 
Just out of curiosity, those that are having issues viewing the pictures, are you using firefox? I just tried that and none of them loaded. Same thing with safari....

So moral of the story...start using chrome ;)
 
Jdunk54nl said:
Just out of curiosity, those that are having issues viewing the pictures, are you using firefox? I just tried that and none of them loaded. Same thing with safari....

So moral of the story...start using chrome ;)
Click to expand...

Presently using chrome (still yet to de-google) and was able to view all of the images in post #1, yesterday at 2:30 - at which time I had clicked the corresponding Thumbs Up icon. However, since sometime last night - around the time of Justin's post about unseen images and subsequent attachments - each post #1 image has been replaced by an empty space with a gray circle icon in the middle.
 
Interesting. I hate the attachment part because you can only upload 3 at a time and can't rotate to get them to the right orientation :(.
Also, generally, the window size of them requires you to have to click on them....I would love to be able to adjust these things.

On the flipside, I thought the firs post pictures were too big and would have loved to size them down.
 
Yeah, for some reason, Google doesn't like being linked to. You could probably see it simply because you're logged into your Google Drive. I recommend Imgbox to host pics on.
 
Is there a better option for uploading files within the forum? Or does that create server space issues and better just to host them somewhere else?
 
I don't mind people uploading pics...especially if they're reasonably-sized. We will eventually run out of space, though, and I'll have to make a decision. Just don't upload a bunch of 8K images :thumbup:
 
BigAl205 said:
I don't mind people uploading pics...especially if they're reasonably-sized. We will eventually run out of space, though, and I'll have to make a decision. Just don't upload a bunch of 8K images :thumbup:
Click to expand...

Any way to get orientation controls and size controls for uploaded pictures? Like we can adjust the size and orientation in the post window.
 
I use GIMP to resize/crop. When you open a pic, it automatically makes the image right-side-up...you can then resize and save it. There no way of editing the pics in the forum software.
 
This seems like a PITA....
I really don't want to have to hose the files just for this site in another program/online storage site. Adding as attachments has its drawbacks of size and orientation.

Ugh.
 
I'm sorry...I'm just one guy running a forum. I don't have unlimited hosting and technical staff like that Verticalscope conglomeration. I have several monthly contributors who help pay the about half of the monthly hosting, but the rest comes out of my pocket. A couple of my buddies are admins who help keep an eye on the place, they can make basic changes in the admin panel, and they let me know when things go haywire....BUT, if something messes up, or someone is having technical issues, I'm the one who fixes it (or tries to). Right now, we've used about 70% of our disk space. If we get too big, we'll have to either upgrade the storage (more money), or start forcing people to host their images off-site.
 
I get it. I'd rather host the files from Google photos so it's a "web link" for you but the photo actually shows up without having to click an extra time. I know I am about 50/50 on having to go to another link just to see pictures.

But Google photos does not work...


I checked out the imgbox...not a huge fan of the dark color AND dark font choices...I can't do it..if you're going to choose dark background...then don't choose a dark font color!
 
Also, I do appreciate you coming here to even offer suggestions, we wouldn't get that elsewhere, which is why a lot of us are now here :)
 
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