Lilmike's Cinema F-20 - Page 61 - AVS Forum | Home Theater Discussions And Reviews
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Old 03-16-2016, 11:00 AM
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Driver List

I am thinking of building an F-20 and had a couple questions before I start cutting wood. Is there a list of approved drivers? Obviously the MFW and Dayton can be used, but are there any others? The other question is about the bevel angle on the internal panels. I cannot find in the plans where it specifies the and of the bevel cuts. Does anyone know what these should be?


Thanks
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Old 03-16-2016, 11:29 AM
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^

after looking at the pic in post 1,

those worrysome bevel cuts are not such a huge concern

it is a simple (ly) beautiful design
my experience from looking at and building boxes with internal panels as depicted, those bevel angles come in around 5 degrees or slightly more i.e.v : not much

cut your panels straight, check your dry fit
then use a belt sander to get a little angle,
which is why you constantly check the dry fit,
you really only need to come semi close, no reason to go full-on OCD

the fit does not have to be a perfect flush fit, it's not heirloom furniture for your great-great grandchildren

you should be using PL3 as your construction adhesive

applied liberally, it will expand, fill and seal that joint air tight

go thru your clamping.blocking, etc. dry run set up before going for it,
PL3 will slide you out of spec if you don't prepare for it

ask me how I know . .
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Old 03-16-2016, 02:08 PM
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Back from the dead...Literally


Did the HF drop right into the hole from the DVC? Did the screw holes line up? The specs show them as being a little different sizes.
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Old 03-16-2016, 02:46 PM
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Did the HF drop right into the hole from the DVC? Did the screw holes line up? The specs show them as being a little different sizes.
I used the original screw holes and it bolted up fine.

On the down side, I think I cooked my HF after a couple hours of "testing". Argh, I knew that Crown amp might over power it. I'm hoping maybe a wire came loose, but I'm too discouraged to pull it apart again and look.
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Old 03-16-2016, 04:13 PM
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Ouch! The HFs extra power handling really only helps at higher frequencies. On the low end both are excursion limited and the DVC actually has more Xmax. I bet you bottomed it out but who knows?
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Old 03-16-2016, 07:00 PM
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Still needing a list of compatible drivers. The Dayton DVC is discontinued as is the MFW. The Dayton HF and Ultimax are both on back order. Are there any other good drivers I can use? I know the Alpine SWS drivers are used in some other horns to good effect. Would the SWS or SWR 15 work well for the F-20? Thanks guys for the help.
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Old 03-16-2016, 07:43 PM
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You can order the Dayton HF from other retailers. Look on eBay, some have a few in stock. You won't be able to use coupon codes or get the excellent PE service but if you just can't wait...

You might be able to find the jbl 1514d online someplace. It models really good but I'm not sure if anyone actually tested it to verify.
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Old 03-16-2016, 09:26 PM
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Quote:
Originally Posted by brookhart995 View Post
Still needing a list of compatible drivers. The Dayton DVC is discontinued as is the MFW. The Dayton HF and Ultimax are both on back order. Are there any other good drivers I can use? I know the Alpine SWS drivers are used in some other horns to good effect. Would the SWS or SWR 15 work well for the F-20? Thanks guys for the help.
whoaaaaaaaaaaaaaaa, when did the Dayton DVC get discontinued? sad cuz that was a great budget driver ... I still have one lying around actually
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Old 03-28-2016, 09:56 AM
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Well I just completed construction of my F-20 this weekend. Here are a couple of pictures showing the internals and after I attached the final panel. I am going to load it with a MFW driver that I was lucky enough to locate on Ebay. During my driver search I was able to get in contact with a person who had 5 leftover MFW drivers that had minor VC rubbing issues. I bought all 5 for $25.00 and am able to get them repaired locally (Dallas) for $40.00 each. I thought it was a good deal. So I might be making more F-20's or other compatible subs in the near future.
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