Sir Byrd, The drivers fit well. It took a bit of trial and error to get it sorted and lots of wasted pieces of MDF, but it now seems I have worked it out.
But you got it right with a 1/4" straight bit and the jasper jig? Strange, I couldn't get it to work.
Round the corners,....
and create a front reflex.
The bits...
And then some internal pieces of wood as per the design.
What a mess!
And this is the power supply and Amp.
and create a front reflex.
The bits...
And then some internal pieces of wood as per the design.
What a mess!
And this is the power supply and Amp.
Looks at the first picture in post #23, I think you may need to go over your upper left radiused edge one more time, looks a bit wavy. Check for any obstructions like putty or glue, happens to me all of the time.
At this stage I plumbed it all in temporarily and had a listen.
WOW! I was so impressed. I have been running in the speakers for a few days on some laid-back jazz on low volume in their original packaging.
The detail is phenomenal. Vocals and acoustic guitars sing out with clarity.
A wonderful sound image in front of me.
This is when I really started to wonder what I was doing. The speakers are not finished and they sound amazing. I wonder how they would sound with decent separation and positioning in a room.
As I backed across the room away from the speakers some of the clarity certainly went away. Anyway - lets finish it first.
WOW! I was so impressed. I have been running in the speakers for a few days on some laid-back jazz on low volume in their original packaging.
The detail is phenomenal. Vocals and acoustic guitars sing out with clarity.
A wonderful sound image in front of me.
This is when I really started to wonder what I was doing. The speakers are not finished and they sound amazing. I wonder how they would sound with decent separation and positioning in a room.
As I backed across the room away from the speakers some of the clarity certainly went away. Anyway - lets finish it first.
So some questions....
I presume I should finish off the design with the angled pieces of wood at the back of the box?
Do they have a name?
And how do I build them and put them in the box?
I presume I should finish off the design with the angled pieces of wood at the back of the box?
Do they have a name?
And how do I build them and put them in the box?
And another question....
Do people have an opinion on whether I should put in a pre-amp (volume control)?
I expect the input to be a phone and I can use the volume control of the phone.
I have also tried input from a laptop.
Or is there a better way?
I have seen a DAC with a volume control built in that takes a USB cable from the phone. I suppose that would sound better than a 3.5mm plug!
I think the CHRontraption deserves a quality source.
Your opinions and advice please.
Do people have an opinion on whether I should put in a pre-amp (volume control)?
I expect the input to be a phone and I can use the volume control of the phone.
I have also tried input from a laptop.
Or is there a better way?
I have seen a DAC with a volume control built in that takes a USB cable from the phone. I suppose that would sound better than a 3.5mm plug!
I think the CHRontraption deserves a quality source.
Your opinions and advice please.
Yeah - first time I have used the curved edges - it is wavy. Thanks 🙂
I will have another go at that.
I will have another go at that.
An image from Andreas' original design.
It shows the angled panels.
I presume that directs the sound waves in a particular direction?
Out the front vent????
It shows the angled panels.
I presume that directs the sound waves in a particular direction?
Out the front vent????
The angles might be there so that there is a range of different lengths/distances involved, so that there isn't just one or two resonant frequencies.
Hi Julien,
I haven't look here for a long while, so I haven't seen your thread 🙁
I don't know if you have seen these threads.
http://www.diyaudio.com/forums/markaudio/207240-chr-70-bass-reflex.html
http://www.diyaudio.com/forums/markaudio/210608-chr70-shoebox-70-3-a.html
The "angled panels" should reduce standing waves.
The last panel I mount was a side wall, so for me it was easy du bring in the "angled panels" 😉
If you have further questions, please let me know.
I haven't look here for a long while, so I haven't seen your thread 🙁
I don't know if you have seen these threads.
http://www.diyaudio.com/forums/markaudio/207240-chr-70-bass-reflex.html
http://www.diyaudio.com/forums/markaudio/210608-chr70-shoebox-70-3-a.html
The "angled panels" should reduce standing waves.
The last panel I mount was a side wall, so for me it was easy du bring in the "angled panels" 😉
If you have further questions, please let me know.
maybe use a combination of different acoustic materialsat first look the inner angles almost made think it was small quaterwave 😀
btw ... the inner 'angles', try drill holes in them 😉
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