Thanks Cal. I measured my space and think for starters I'll try a 28" version. I've been enamored of the Mark Audio speakers so I'll try those. Biggest question is which one. Looking at 7.3 or 7ms specs seem fairly close but frankly I really don't know which specs matter most for the Cornu Spirals.
Make sure the magnets fit the rear chamber before gluing it up. You can enlarge the rear chamber by removing some horn wall by an inch or so in length.
I've been pretty curious how these would sound with coax drivers, and looking at the post history I saw that Cal mentioned he has some no name car coax drivers but I couldn't find any mention of him putting them in these cornu boxes.
I would have to go look if I have any small coax's. The RS 1354's are an automotive driver but not a coax. Back when they made them 8 ohms.
EDIT: Yes I do have a couple pairs of 4.5" coax car speakers. They're a no name brand and I don't think I've ever hooked them up, I believe they were a gift. I wouldn't expect much from them so I don't think I will try them. The FR's of today are pretty darn good so a small coax may not be necessary.
EDIT: Yes I do have a couple pairs of 4.5" coax car speakers. They're a no name brand and I don't think I've ever hooked them up, I believe they were a gift. I wouldn't expect much from them so I don't think I will try them. The FR's of today are pretty darn good so a small coax may not be necessary.
First time project finished: Upholstered Cornus
The cloth came in, so I was able to finish this project today:
Upholstered Cornu
Reasoning:
My girlfriend needed some speakers for her bedroom and the only real place available was wall mounted. These with a subwoofer have already gotten the lifestyle piece seal of approval from her.
Construction materials:
Foam core boards from Dollar Tree
Hot Melt Glue
PL300 Foam Board Construction Adhesive
Sublimation printed Galaxy tapestry off Amazon
Hardware:
Cheap full range driver from component stereo speakers I found on the side of the road
Polk PSW110 subwoofer that I purchased for $20 (with failed capacitor) and repaired.
Lepy 20w per channel class d amp.
The cloth came in, so I was able to finish this project today:
Upholstered Cornu
Reasoning:
My girlfriend needed some speakers for her bedroom and the only real place available was wall mounted. These with a subwoofer have already gotten the lifestyle piece seal of approval from her.
Construction materials:
Foam core boards from Dollar Tree
Hot Melt Glue
PL300 Foam Board Construction Adhesive
Sublimation printed Galaxy tapestry off Amazon
Hardware:
Cheap full range driver from component stereo speakers I found on the side of the road
Polk PSW110 subwoofer that I purchased for $20 (with failed capacitor) and repaired.
Lepy 20w per channel class d amp.
Attachments
So the driver is mounted flush on foam and fabric covers the driver front? Great execution. They look just like a wall hanging printed frame art. Very nice!
Same as these right? But now upholstery fabric Covered - how are the kids and highs coming through in the fabric?
Same as these right? But now upholstery fabric Covered - how are the kids and highs coming through in the fabric?
Yes, these are the same and now covered in fabric.
It's not very scientific because I neither did a side by side or any measurements, so I can't tell how much the upholstery is dampening the speaker..
We did listen to them for over an hour while eating dinner, they were sitting on the carpeted floor angled a little up to our listening position. I kept forgetting that I was listening to hand made upholstered foam core cabinets with subwoofer support.
They sounded great, especially for what they are.
It's not very scientific because I neither did a side by side or any measurements, so I can't tell how much the upholstery is dampening the speaker..
We did listen to them for over an hour while eating dinner, they were sitting on the carpeted floor angled a little up to our listening position. I kept forgetting that I was listening to hand made upholstered foam core cabinets with subwoofer support.
They sounded great, especially for what they are.
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How acoustically transparent is the printed cloth you used? Can you see through it? They look really nice!
The fabric is fairly see through when looking towards a light source. I'm not sure how acoustically transparent it would be considered and I don't have the tools to measure it.
I did however use a different speaker and listen to a slow frequency sweep then put the cloth over it and listen to that same frequency sweep. I couldn't tell much of a difference to my ears.
I did however use a different speaker and listen to a slow frequency sweep then put the cloth over it and listen to that same frequency sweep. I couldn't tell much of a difference to my ears.
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Cross over thread for hangar speakers
Go easy on my build techniques, I'm not as good as you guys!
Got Hangar Tunes??? - VAF Forums
They sound really good in the hangar - pretty sure some airplane guys might start lurking over here.
Go easy on my build techniques, I'm not as good as you guys!
Got Hangar Tunes??? - VAF Forums
They sound really good in the hangar - pretty sure some airplane guys might start lurking over here.
Nice. Always glad to see the word getting around, and of course seeing the finished product. $9 drivers in an inexpensive box in a large building. What's not to like?
Cheers.
Cheers.
Hi Gecko,
Great post there in VAF!
Reposting your photos here:
So, did SWMBO Andi ever find out you used her $500 Vitamix and pizza stones as clamp weights? 🙂
Great post there in VAF!
Reposting your photos here:
So, did SWMBO Andi ever find out you used her $500 Vitamix and pizza stones as clamp weights? 🙂
So, did SWMBO Andi ever find out you used her $500 Vitamix and pizza stones as clamp weights?
Not unless she hits these forums!!!!!
Not unless she hits these forums!!!!!
Not to mention the nice granite countertops in the kitchen. That’s what I love about foamcore speakers: you can make them in 1 night in the kitchen while everyone is asleep. No dust, no noisy table saw, costs almost nothing. Quiet as a church mouse and sneak off into the night with new found speakers. 🙂