Bookshelf with curved cabinet build

Rega Turntables
It came around 12K including shipping. I bought this just for DIY, not becouse of the audio quality. I will try different types of cabinets and this will be finally used as surround back in my hometheater setup.
 
sudhishkv said:
I just ordered the BR1 speaker components from parts-express. I am planning to build a pair bookshelf speakers using this components. I would like to make a curved cabinet instead of the normal box like the one shown in the
Click to expand...

I am not a regular here but I have built a few cabinets with curved sides. I have posted some picturs of the last pair I built here.
Pictures of Selah designed Tempesta Extreme and RC4 (no subwoofer)

It is not terribly diffcult. Just take 3-4 layers of 6mm marine grade ply and bend it over a pattern. I used the bracing as the pattern.

In my speaker I used 3 layers of ply between 2 layers I put in 3mm of resin bonded fiberglass for added stifness and between 2 other layers I added a layer of 3mm lead sheet for weight and damping. The insides of the box were lined with a combination of dampmat (a product similar to Dynamat Extreme) and 18mm of open cell foam (25mm would not fit).
 
sudhishkv said:
It came around 12K including shipping. I bought this just for DIY, not becouse of the audio quality. I will try different types of cabinets and this will be finally used as surround back in my hometheater setup.
Click to expand...

Thanks also can you let me know the break up and did you order directly from parts-express or used a courier agency in between. And also how long did it take the items to arrive.

Thanks
 
spirovious said:
Curved cabinate can be made by sticking curved ply shits together..
Click to expand...

I find the "translam method" used below terribly wasteful of wood. Besides you need a CNC machine and a hell of a lot of glue.
Curved cabinet Overnight Sensation build - Page 2

http://techtalk.parts-express.com/showthread.php?226900-Translam-Nano-Neos
http://speakerstuff.com/?p=3
http://www.audiocircle.com/index.php?topic=85020.40
http://www.audiocircle.com/index.php?topic=79983.0
http://www.audiocircle.com/index.php?topic=79983.20

If you search audio circle you will find a lot of trans lams especially Vapor Audio promoted it.

Overall for speaker projects the Parts express forum offers the best pictures.
 
Last edited:
jls001 said:
That looks like a very serious build and I am sure it will sound great! The curved side baffles is very innovative.
Click to expand...

FYI they will be driven by 4 channels of an Arcam AVR400 (rear are Rick's S6 slightly modified for on wall response).

This is not a extreme build. The most extreme build I did used a pair of JBL 2245 woofers. It involved rebar and concrete and each cabinet (one for each woofer) weighed 150lbs. We monuted it on skids and used an airsled to move it into position. http://www.airsled.com/appliance.htm

This is not my first curved side speaker. Some years ago (early 90s) I noticed that if we bent ply it got stressed and the stressed ply was actually stiffer than the flat ply. Around that time I was working on hovercrafts with Airbarge (Sample Applications) and these crafts were made of resin bonded fiberglass.

So I married the stiffness of the resin bonded fiberglass to the damping capabilities of wood and interleaved layers of fiberglass with wood. Bracing was initally done via EN8 steel (also called gear steel as it is commonly used for making gears).
 
Last edited:
Thanks guys for the great links. My plan is not to go for the plan which waists lots of wood. I am looking at the following build which is little difficult but has a great result. The main problem with this is the glue. I am not sure which glue I should use. Anyone has any idea where can I buy it. I found a type of plywood which can be rolled like a tube. So If I get the glue, I am ready to go.

DIY, SPEAKER, SCANSPEAK, VIFA, PEERLESS, SPEAKER BUILDING, CROSSOVER, SWITCH AMPLIFIER

DIY, SPEAKER, SCANSPEAK, VIFA, PEERLESS, SPEAKER BUILDING, CROSSOVER, SWITCH AMPLIFIER
 
Last edited:
sudhishkv said:
Anyone has any idea where can I buy it. I found a type of plywood which can be rolled like a tube. So If I get the glue, I am ready to go.
Click to expand...
Hi sudhish,
Can you share more details of the plywood you have mentioned ^. Are you talking about flexible plywood? I have used 12mm flexible plywood for making the curved short horns of my Altec A7. Though it is flexible, it cannot be rolled like a tube.

EDIT: Also Sudhish, will Fevicol not work? FM sbg mentioned a product called Liquid nails to be very good in one of the DIY meets.
 
Last edited:
sudhishkv said:
Thanks guys for the great links. My plan is not to go for the plan which waists lots of wood. I am looking at the following build which is little difficult but has a great result. The main problem with this is the glue. I am not sure which glue I should use. Anyone has any idea where can I buy it. I found a type of plywood which can be rolled like a tube. So If I get the glue, I am ready to go.
Click to expand...

santhosh said:
Hi sudhish,
Can you share more details of the plywood you have mentioned ^. Are you talking about flexible plywood? I have used 12mm flexible plywood for making the curved short horns of my Altec A7. Though it is flexible, it cannot be rolled like a tube.

EDIT: Also Sudhish, will Fevicol not work? FM sbg mentioned a product called Liquid nails to be very good in one of the DIY meets.
Click to expand...

I agree. The 6 mm flex ply I have used is similar to the one linked below. It bends but not into a roll.

Truwood - Products
 
I am down with fever. I will post the picture of the plywood and the cross over build as soon as i get well. I have already received the components from parts-express.
 
I am back after the holidays :)

Assembled the crossovers and tested with my stereo amp. Sounds fine next step is making the cabinet.

Some pics













 
navin advani said:
I am not a regular here but I have built a few cabinets with curved sides. I have posted some picturs of the last pair I built here.
Pictures of Selah designed Tempesta Extreme and RC4 (no subwoofer)

It is not terribly diffcult. Just take 3-4 layers of 6mm marine grade ply and bend it over a pattern. I used the bracing as the pattern.

In my speaker I used 3 layers of ply between 2 layers I put in 3mm of resin bonded fiberglass for added stifness and between 2 other layers I added a layer of 3mm lead sheet for weight and damping. The insides of the box were lined with a combination of dampmat (a product similar to Dynamat Extreme) and 18mm of open cell foam (25mm would not fit).
Click to expand...

Nice speaker build
 
Audio Technica AT-LP60X Fully Automatic Belt-Drive Turntable
Buy from India's official online dealer!

Similar threads

S
Anyone from Bengaluru who can guide me in building BookShelf speakers?
Replies
10
Views
2K
smslca
S
F
Build This Tube Amp With A Screwdriver
Replies
10
Views
8K
Amarendra
A
HiFiVision
Wharfedale DIY KIT
Replies
5
Views
5K
reignofchaos
R
johnnyaud
Bookshelf Speakers + Amp ~25-30k | Open to DIY
Replies
3
Views
2K
Mahi
M
H
Stereo setup
Replies
10
Views
4K
RohanBhatia
R
Back
Top