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Older Activity
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Today, 05:09 AM
That there my friend, is a LUNA MOTH.
3 replies | 61 view(s)
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Yesterday, 11:06 PM
Jeff, do you have something that shows the phase of the woofer and PR individually in addition to the total phase?
dlr
39 replies | 771 view(s)
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Yesterday, 09:56 PM
I graduated from Moore High School, along with my sisters. One lives in Norman and was on the phone with my mother when the line went dead. I was...
12 replies | 221 view(s)
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Yesterday, 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.
15 replies | 276 view(s)
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Yesterday, 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 | 370 view(s)
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Yesterday, 08:29 PM
It would be great for a young person, but not for someone like me. I would love to work in audio, at least I think it would be fun, but I think it...
8 replies | 763 view(s)
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Yesterday, 08:25 PM
It was the phrase, "the cheapest polarized one's are $12+ each" that got my attention. You must have meant "polyproylene".
15 replies | 276 view(s)
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Yesterday, 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....
15 replies | 276 view(s)
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Yesterday, 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...
39 replies | 771 view(s)
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Yesterday, 01:29 PM
Any idea how the 1850 and/or the 1798 compare to the 1757?
1757: http://www.parts-express.com/pe/showdetl.cfm?partnumber=264-881
1850:...
25 replies | 5205 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.
14 replies | 411 view(s)
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05-19-2013, 09:18 PM
You likely blew the tweeters because you were clipping the amp continuously.
Be careful with the next set or you could blow those tweeters too.
14 replies | 411 view(s)
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05-19-2013, 09:16 PM
I've used laminate myself on occasion.
The baffle is oak veneer on this one.
This one is all laminate.
91 replies | 2792 view(s)
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05-19-2013, 07:40 PM
This is great thread as my current project will have external crossovers, mainly to leave open the option of going active if passive doesn't work...
52 replies | 1714 view(s)
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05-19-2013, 06:20 PM
I don't think its that the guide reduces the highs as much as it boosts the lows.
I know that the interface between the dome and guide is critical...
17 replies | 425 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 | 186 view(s)
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05-19-2013, 05:29 PM
The problem you have with fabric dome tweeters is that their shape is not spherical over their operating range. The domes undergo modal oscillations...
17 replies | 425 view(s)
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05-19-2013, 05:16 PM
DA215 or DA270. The DA215 in a sealed enclosure will give you surprisingly good bass in a smallish cabinet, like the PE 1cf MTM cabinet. ...
10 replies | 408 view(s)
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05-19-2013, 05:07 PM
Good eyes Wolf. Right after I took the picture I had to change a couple of wrong wires. I'm sure it won't be the last time. The Ultra cap says 8uf...
52 replies | 1714 view(s)
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05-19-2013, 02:54 PM
Enjoy.
52 replies | 1714 view(s)
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05-19-2013, 09:32 AM
Interesting. How did you produce that? I'm not a fan of color gradation for intensity.
dlr
12 replies | 272 view(s)
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05-19-2013, 09:28 AM
I will be doing that, but I'm not at that point right now. Your point is taken.
In reviewing Small's PR "Analysis" paper, there are two...
39 replies | 771 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...
39 replies | 771 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...
39 replies | 771 view(s)
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05-19-2013, 02:40 AM
takitaj has been doing some baffles and other items for us. He charges by how much machine time, but that is totally dependent on what the...
14 replies | 647 view(s)
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05-19-2013, 12:25 AM
If you need something to meet that ribbon, you'll want a midwoofer of about 6" or less.
But if you only want to use the ribbon as a "super...
12 replies | 425 view(s)
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05-18-2013, 11:32 PM
Your description of "being 12db/oct -aligning with the roll-off of the PR" does not make sense. The system is the summed response, it won't align...
39 replies | 771 view(s)
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05-18-2013, 10:46 PM
The problems you're going to have with large diameter drivers going to high frequency are numerous. The most obvious one is that as frequency goes...
12 replies | 425 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 | 94 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,...
39 replies | 771 view(s)
About jkim
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View jkim's Blog
by jkim on 06-02-2010 at 11:44 AM
Find details of this design here
Jay
by jkim on 06-02-2010 at 07:41 AM
See here for details of this design
Jay
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