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Older Activity
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Yesterday, 09:21 PM
One more thing - I can send you the frd files for the woofer and the passive radiator if you want to load them into something and sum them yourself. ...
50 replies | 1048 view(s)
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Yesterday, 08:51 PM
Do you like the way we hid something useful and informative in a thread no one sees?
50 replies | 1048 view(s)
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Yesterday, 08:50 PM
It's the latter. You can see all of that in this graph:
50 replies | 1048 view(s)
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Yesterday, 08:43 PM
;) Several years ago on the old Mad board Dave Ellis posted that everytime he ate popcorn and listened to music everything about the music sounded...
50 replies | 1048 view(s)
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Yesterday, 05:43 PM
I did some more with this today, so I could best understand what was happening. I was able to save out the port response from 1Hz to 20khz with phase...
50 replies | 1048 view(s)
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2 replies | 72 view(s)
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05-20-2013, 09:44 PM
If you want to use the cheaper NPE cap, then you should use it, and save the money. We all have to balance our choices with our budgets.
32 replies | 739 view(s)
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05-20-2013, 08:50 PM
No interest at all, huh? OK, so how 'bout $80 + shipping. That's not bad for a new $200 driver. you can end up with a pair at a pretty good discount....
3 replies | 448 view(s)
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05-20-2013, 08:25 PM
It was the phrase, "the cheapest polarized one's are $12+ each" that got my attention. You must have meant "polyproylene".
32 replies | 739 view(s)
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05-20-2013, 07:28 PM
I'm not sure if you're just mixing some things up or not, but you should never use polarized capaciators in any location in a crossover....
32 replies | 739 view(s)
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05-20-2013, 07:10 PM
Well, the obscure thread title will cause most parties to miss our discussion, but since we have already stated quite I bit I will go ahead and...
50 replies | 1048 view(s)
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05-19-2013, 09:20 PM
+1
People often don't realize how brutal clipping is on a tweeter.
28 replies | 697 view(s)
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05-19-2013, 06:02 PM
You need to use a photo hosting site like photobucket.com.
On photobucket you copy the direct link to the pic. Then when you click to "insert...
8 replies | 191 view(s)
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05-19-2013, 07:18 AM
Dave,
Passive radiators have quite a bit more losses than a port has, so in most vented systems I would recommend using a port, especially if the...
50 replies | 1048 view(s)
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05-19-2013, 06:58 AM
But you have also not done what I asked - take a program that you respect that uses the full electroacoustical model for a passive radiator system...
50 replies | 1048 view(s)
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05-18-2013, 09:19 PM
I don't use this software, but if you were able to select a 4th order L-R transfer function then you should not need to enter the Q - that has...
2 replies | 96 view(s)
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05-18-2013, 09:15 PM
This is probably the wrong thread for this discussion, and I don't really have the time, or these days, the interest to get into a long discussion,...
50 replies | 1048 view(s)
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05-17-2013, 09:53 PM
Then Dave, I would challenge you to actually research this and you will find that mathematcially a passive radiator system does indeed roll-off...
50 replies | 1048 view(s)
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05-17-2013, 07:17 PM
I recognized your post was a joke, I didn't get taken in by that.... I was just responding to Dave's Post.
50 replies | 1048 view(s)
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05-17-2013, 05:54 PM
With a port it is as you decribe, "as the frequency approaches zero, the phase delta approaches 180", but not with passive radiators. In this case,...
50 replies | 1048 view(s)
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05-17-2013, 05:18 PM
Huh? You lost me. How would passive radiators equate to dipole? A passive radiator subwoofer is purely monopole, especially since the radiators can't...
50 replies | 1048 view(s)
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05-16-2013, 08:33 PM
OK, you're box is large enough to make the dual APR15 work OK with the supplied weights. My box was going to be a lot smaller and I couldn't get them...
9 replies | 260 view(s)
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05-16-2013, 06:54 PM
Awesome Dave! I'm looking forward to seeing the completed project. Your creativity is always exciting to watch.
9 replies | 260 view(s)
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05-16-2013, 06:53 PM
I am curious about this build, Jay. Are you using one to two APR15's? What size cabinet did you choose? What amp?
I could make the SD12X work...
9 replies | 260 view(s)
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05-14-2013, 04:50 PM
I listen to them most often without a sub, with good response to 40Hz in my room and moderate levels. However, adding the sub and getting the bottom...
32 replies | 1078 view(s)
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05-13-2013, 09:14 PM
OK, I'll put you on the list. ;)
(Everyone wishes they never posted in that thread).
32 replies | 1078 view(s)
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05-13-2013, 08:56 PM
Here's my take. I would never tell someone building one of my designs that they couldn't change it if they wanted to. It's their speaker, they paid...
110 replies | 4175 view(s)
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05-13-2013, 08:29 PM
I think I just heard choirs sing.
110 replies | 4175 view(s)
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05-13-2013, 08:17 PM
I don't see how you can make it work for everything, Dave. There have to be some file conventions that must be followed.
17 replies | 468 view(s)
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