Hi,
I finally assembled my Half Changs. Not yet finally sealed, just with a coulpe of wood screws. First listening impression was too much HF. Then with 3.6R in series much better.
Acoustic instruments and female vocals sound awsome!
The only concern I have is quite poor bass, which I have expected to be more solid and simply stronger. I don't need to rumble my house walls, just would like to hear a solid drum foot or bass guitar.
The cabinet is lined by egg crate foam - top, back and one side, as recommended.
The foam is one inch thick.
Please have a look at the pictures and advise.
Thanks
I finally assembled my Half Changs. Not yet finally sealed, just with a coulpe of wood screws. First listening impression was too much HF. Then with 3.6R in series much better.
Acoustic instruments and female vocals sound awsome!
The only concern I have is quite poor bass, which I have expected to be more solid and simply stronger. I don't need to rumble my house walls, just would like to hear a solid drum foot or bass guitar.
The cabinet is lined by egg crate foam - top, back and one side, as recommended.
The foam is one inch thick.
Please have a look at the pictures and advise.
Thanks
Last edited by a moderator:
Than you for the advise how to upload pictures!
Regarding my bass complains, I have read whole the thread and now I know that drivers need 100 hours playing to show their full presence.
I would like you just validate the lining, before I finally glue them.
Regarding my bass complains, I have read whole the thread and now I know that drivers need 100 hours playing to show their full presence.
I would like you just validate the lining, before I finally glue them.
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I would like you just validate the lining
Foam does not work well… the 1st thing is to replace it.
dave
I don't recall ever recommending grey egg-crate acoustic foam. Most of my designs specifically recommend not using it. As a material it has its place, but I generally avoid it. Acoustic fibreglass or natural fibre materials (jute, cotton felt / wool felt, Ultratouch recycled denim etc.) tend to work better for this application.
Will the felt 10mm thick and density 1000g/sqare meter do?
Guys,
any opinion?
Instead of a felt I can also obtain polyester low density wad (250g/sqare meter), like on the picture.
Scootmoose,
your recommendation as a designer's will be appreciated.
Thanks in advance!
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Hi Dave,
thank you for your input.
So the natural felt 10mm thick and density 1000g/sqare meter will work better?
I haven't permanently attached the last side yet, as I want to solve the lining issue before. For a test the side was attached with a dozen or so of a wood screws.
Finally I intend to attach it with a polyurethane glue, which will also seal the slits.
thank you for your input.
So the natural felt 10mm thick and density 1000g/sqare meter will work better?
I haven't permanently attached the last side yet, as I want to solve the lining issue before. For a test the side was attached with a dozen or so of a wood screws.
Finally I intend to attach it with a polyurethane glue, which will also seal the slits.
Hi guys,
Please see what I have found. This is a recycled cotton made nonwoven, 10mm thick and 800g/m2 dense.
Mainly used in automotive and housewares for damping.
Do you think this can work properly?
Please see what I have found. This is a recycled cotton made nonwoven, 10mm thick and 800g/m2 dense.
Mainly used in automotive and housewares for damping.
Do you think this can work properly?
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Hello guys,
Hope you are all safe in this tough time.
I have finished building my Half Chang cabinets, just waiting for coating.
As I'm going to use Fostex 206en I should apply correction circuit (1mH inductor & few ohms resistor).
1) could you please confirm whether 5W resistor is going to be durable enough ?
2) inductor's resistance 0,85 ohm is okay or should be lower?
Cheers
Hope you are all safe in this tough time.
I have finished building my Half Chang cabinets, just waiting for coating.
As I'm going to use Fostex 206en I should apply correction circuit (1mH inductor & few ohms resistor).
1) could you please confirm whether 5W resistor is going to be durable enough ?
2) inductor's resistance 0,85 ohm is okay or should be lower?
Cheers
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