Need advise on pre-amp/amp setup.

[preedy]

I am designing/making a floating center channel shelf. The center channel is a SLA design from Bill Fitzmaurice. I am also making a portion of the cabinet a 8" subwoofer.
I would like to make sure that i have selected the correct bass for the cabinet space.
I will be attaching 4 satellite speakers to this setup.

Most important is the amp setup.
1. For the center channel and sub -- Sure Electronics AA-AB32971 2x100W Class D
2. Satellite speakers -------------------- Dayton Audio KABD-430 4 x 30W All-in-one Amplifier Board with DSP not sure how to connect four RCA to this. so 2 Sure Electronics AA-AB32165 2x25W.

How to get the TV signal to these amps??
Would this work? ATNEDCVH 5.1 Surround Sound Decoder Separator Converter on amazon.
I was unable to find any boards with ARC HDMI or opitical input 5.1.

I have attached the cabinet design and here a list of the drivers for your info.
Center channel.
6 - Godwood GW-4028s
6 - HIVI T20 8
Sub
1 - Goldwood GW-408D

[Harpo]

What you're suggesting will work but it may be overly complex, particularly dealing with all those volume controls.

If the tv has ARC, it might make more sense to get an inexpensive 5.1 home theater receiver and a small plate amp for the sub. That will give you a single control for all (with a remote) and additional inputs.

[billfitzmaurice]

I am also making a portion of the cabinet a 8" subwoofer.

Don't do that. For details why and what you should do post on my forum.

[preedy]

What you're suggesting will work but it may be overly complex, particularly dealing with all those volume controls.

If the tv has ARC, it might make more sense to get an inexpensive 5.1 home theater receiver and a small plate amp for the sub. That will give you a single control for all (with a remote) and additional inputs.

Thank you for your response, But the Idea is to no have a visible amp, I am trying to make this look like furniture, minus speakers,,,,,

Aaaah I realized that in my drawing the left and right side of the cabinet is open, but those areas will be enclosed when built.

[Chris Roemer]

You can do box design with WinISD (from www.linearteam.org ), and you SHOULD (besides, it's fun).
Your 4"ers can reach lower than your 8" "sub" (WinISD will show you this).
Also, I wouldn't call an 8" driver that only has 3.5mm of Xmax (and can barely reach 60Hz) a "sub".

[JRT]

Your front center channel loudspeaker design (depiction quoted above) is creating a cavity in front of the driver baffle, and there will be cavity resonances associated with that (quarter wavelength fundamentals and associated harmonics) and the resonances will add some delay to direct radiation, and will constructively and destructively interfere with the direct radiation in the sum. The associated frequencies will be somewhat distributed due to the varied depth.

If you want a curved front center channel loudspeaker design, look at building a CBT array (maybe a scaled down version of Monte Kay's CBT front center channel loudspeaker, shown below), which is convex instead of concave, and so does not have the cavity that would create the cavity resonances. To make your curved front center channel loudspeaker look like a curved console table, add a top panel that aligns with the front baffle without overhang. Add a bottom panel and bracing to reduce panel resonance, and stuff the unused cavity. Add some grill cloth to the front to hide the drivers.

http://mfk-projects.com/Home_Theatre...r_speaker.html

[JRT]

Below is a "curved console table" which has a shape that might be useful in this. If you use a "french cleat" to mount that to a wall (a technique often used in mounting well-installed kitchen cabinets), then you can eliminate the two legs adjacent to the wall. leaving only the one front leg rigidly supporting the front weight of the cabinet. And with the cabinet attached to the wall, that remaining front leg may be angled to attach to the wall at the bottom of the leg at the top of the baseboard moulding, eliminating the need for the bottom shelf and the structural support that shelf otherwise provides to free standing legs.

[billfitzmaurice]

Your front center channel loudspeaker design (depiction quoted above) is creating a cavity in front of the driver baffle, and there will be cavity resonances associated with that (quarter wavelength fundamentals and associated harmonics)

That's why my design doesn't look like that, but like the picture in the first post. It has no audible or measurable cavity resonances. If it did it never would have made it past the prototype stage.

[djg]

Put a smoked glass front on the credenza underneath all this. Get some proper AV equipment and put it behind the smoked glass. These little Class D things are fun, but in my opinion belong in your PC 2.1 system, not a living room.