Chris Tsutsui
Screenwriter
- Joined
- Feb 1, 2002
- Messages
- 1,865
I am about to purchase the materials necessary to start my Tempest project. It will be an Adire Alignment enclosure with a 15" tempest.
214L cabinet (37.5"H, 22"W, 22"D on 4" legs)
tuned to 15.4 hz
3" flared ports with 11" long center tube
Matches 2nd order roll-off with
Q = 0.577
Fc 20HZ within 0.5db down to 11hz
Group Delay near 17ms at 20hz
I am open for any suggestions that will save money and would like any thoughts/concerns.
Parts Express 250 Watt plate amp$135.90 + S&H
Link Removed$150 shipped
PE round speaker terminal $4
17ft EFX-2 RCA interconnect FREE (old car audio IC, will use one side for sub's mono)
Dayton 12ft RCA IC $11.70 -- If the EFX cable sounds bad, I'll buy this. Hopefully the low quality EFX cable only distorts the highs and won't affect the lows.
PE 3" flared port tube kit I'll need 2 of these kits = $24.60 + S&H. Can I just get the flared ends somewhere?
12 gauge home depot speaker wire0.47 per ft, to connect driver to plate amp.
Question: Do I wire the amp parallel to the 2 terminals on the driver? Will this produce 4 ohms so my amp can output 250 watts instead of 150?
$312.45 total items + shipping
$80 = 2 x maple laminated 3/4" MDF sheets (4x8')
$7 for some Spray on over coat
Total costs: $400
The cost of nails/screws/glue/biscuits/solder/caulk is free. I will build it with my friend who is a professional contractor at his shop. He wanted to cut the edges of the maple laminate at 45 degrees and join the planes together using biscuits (wood oval discs that fit in slots) and glue. He said the outside will have no nails, but if I want, he can use countersunk screws and maple plugs to hide the screws.
We will turn out some sold maple legs on a lathe from some scrap wood and not use speaker spikes. I might add the spikes later if I'm not satisfied. The HT room is about 11' by 12' on the 2nd floor of my house so things are gonna shake anyways.
I was going to use 64oz of R-12 fiberglass insulation on the inside of the box but am afraid it will cause a health hazard due to the vents. I will probably NOT use any, and will add it later when I want to spend the $40 on 5lbs of acousta-stuf.
That about does it for the parts I'm ordering. I'll be able to take many pics and post results on my website once I get started. Thanks
214L cabinet (37.5"H, 22"W, 22"D on 4" legs)
tuned to 15.4 hz
3" flared ports with 11" long center tube
Matches 2nd order roll-off with
Q = 0.577
Fc 20HZ within 0.5db down to 11hz
Group Delay near 17ms at 20hz
I am open for any suggestions that will save money and would like any thoughts/concerns.
Parts Express 250 Watt plate amp$135.90 + S&H
Link Removed$150 shipped
PE round speaker terminal $4
17ft EFX-2 RCA interconnect FREE (old car audio IC, will use one side for sub's mono)
Dayton 12ft RCA IC $11.70 -- If the EFX cable sounds bad, I'll buy this. Hopefully the low quality EFX cable only distorts the highs and won't affect the lows.
PE 3" flared port tube kit I'll need 2 of these kits = $24.60 + S&H. Can I just get the flared ends somewhere?
12 gauge home depot speaker wire0.47 per ft, to connect driver to plate amp.
Question: Do I wire the amp parallel to the 2 terminals on the driver? Will this produce 4 ohms so my amp can output 250 watts instead of 150?
$312.45 total items + shipping
$80 = 2 x maple laminated 3/4" MDF sheets (4x8')
$7 for some Spray on over coat
Total costs: $400
The cost of nails/screws/glue/biscuits/solder/caulk is free. I will build it with my friend who is a professional contractor at his shop. He wanted to cut the edges of the maple laminate at 45 degrees and join the planes together using biscuits (wood oval discs that fit in slots) and glue. He said the outside will have no nails, but if I want, he can use countersunk screws and maple plugs to hide the screws.
We will turn out some sold maple legs on a lathe from some scrap wood and not use speaker spikes. I might add the spikes later if I'm not satisfied. The HT room is about 11' by 12' on the 2nd floor of my house so things are gonna shake anyways.
I was going to use 64oz of R-12 fiberglass insulation on the inside of the box but am afraid it will cause a health hazard due to the vents. I will probably NOT use any, and will add it later when I want to spend the $40 on 5lbs of acousta-stuf.
That about does it for the parts I'm ordering. I'll be able to take many pics and post results on my website once I get started. Thanks