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Old 12th August 2011, 02:42 PM   #1061
epa is offline epa  Netherlands
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by j bells mini's you mean the 1/2"ply ss15?
there is a topic about this where the lf3015 cone doesn't like the open bafle.
imo as djk sugested there, beter use a slot opening to prevent the uneven loading.
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Old 12th August 2011, 03:52 PM   #1062
jbell is offline jbell  United States
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Quote:
Originally Posted by screamersusa View Post
Anybody in Denver and points near there..... Give me a shout cuz that's where I'm Heading.
I'm in KS... which is not a destination... more like a place to pass through.

you'll go past me on the way to denver.

BTW -- kansas speed limit is now 75!! on I-70, so you'll be able to go quickly past me.


Yes, some compression on the ss15 would be helpful. And while I have not personally wrecked a cone like 4pyro's has on his TH that is similar to my cabinet, a bit of compression is a good thing. (but then it wouldn't be a single sheet any more....)

Good to hear from you scott -- glad you are still upright and kickin. Ping flipc -- he has a dozen ss15, which is double your normal 6-stack.
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Old 12th August 2011, 04:20 PM   #1063
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Quote:
Originally Posted by jbell View Post
Yes, some compression on the ss15 would be helpful. And while I have not personally wrecked a cone like 4pyro's has on his TH that is similar to my cabinet, a bit of compression is a good thing. (but then it wouldn't be a single sheet any more....).
I was thinking single sheet and it's slightly bigger brother... the A-10 version
Ya know me....armor plate everything and put a big fast gun in it and take it into combat!

Glad to see you r all still at it..... it's certainly worth the trouble.
And especially thanks to DR Danley for getting us all addicted to TH's.

Last edited by screamersusa; 12th August 2011 at 04:23 PM.
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Old 12th September 2011, 09:19 PM   #1064
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Default Compression, you say....

Ok, for the sake of argument, what would you to to the SS15 to add said compression. I don't mind having to buy more wood. I like the size/performance it offers now.


Lee
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Old 13th September 2011, 12:57 AM   #1065
jbell is offline jbell  United States
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Originally Posted by bassiklee View Post
Ok, for the sake of argument, what would you to to the SS15 to add said compression. I don't mind having to buy more wood. I like the size/performance it offers now.


Lee
Build the ss15 'as is' with the exception of the driver baffle. Make an opening approx 400cm2 in it ONLY. Then double the 'as drawn baffle board' up with 3/4" ply. Cut the required hole size for the 15" driver. That'll give you 3/4" worth of xmax room for your driver, which is about 2mm more than xlim on a 3015lf.
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Old 13th September 2011, 01:52 AM   #1066
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jbell sorry if i missed it, but what effect will more compression have on the output? lower? louder?
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Old 13th September 2011, 02:38 AM   #1067
jbell is offline jbell  United States
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Originally Posted by m R g S r View Post
jbell sorry if i missed it, but what effect will more compression have on the output? lower? louder?
safer
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Old 13th September 2011, 03:54 AM   #1068
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safer for the cone? wouldn't more compression put more pressure on cone making it not as safe?
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Old 13th September 2011, 04:05 AM   #1069
jbell is offline jbell  United States
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2 things (as I understand it)

1. it provides an 'even' load so the driver won't try to deform and offset during excursion, and rub the vc.

2. it provides some resistance below Fc of the horn, so it doesn't unload as quickly and 'flap'.

There may be other benefits as well.
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Old 16th September 2011, 04:06 PM   #1070
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Given the 3015lf's huge price increase, and threatened discontinuation, what is a GOOD alternative driver that is still affordable? Kappa Pro 15 lf2? Difinimax 4015?
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