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Multi-Way Conventional loudspeakers with crossovers

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Old 15th March 2017, 02:13 PM   #11
Mrcloc is offline Mrcloc  South Africa
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Thanks. I've started to play around in boxsim. I'm just no good with crossovers. I think I get the basic idea, and I'll see what I can do.
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Old 15th March 2017, 02:52 PM   #12
Mrcloc is offline Mrcloc  South Africa
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A little tweaking here and there, and I get this. Any comments? How accurate is boxsim? This is with a CP13 tweeter.
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File Type: png CP13_1_W130S_2.png (32.8 KB, 164 views)
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Old 15th March 2017, 02:55 PM   #13
Mrcloc is offline Mrcloc  South Africa
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This is the crossover.
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Old 15th March 2017, 03:36 PM   #14
system7 is offline system7  United Kingdom
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That won't work at all. Puny tweeter just not up to it.

https://boxsim-db.de/kategorie/systeme/drei-wege/

These designs can be imported straight into the projekte folder and adjusted.

Most of them aren't actually that impressive, but a good start.

There's no replacement for displacement with bass. But the SEAS Bragi MTM is a good one for an authoritative sound. And series wiring two 4 ohm basses is also a good one. Or you can add a sideways firing bass or two as in the Devore Fidelity Gibbon X.

Your impedance correction can't be right for two series wired W130S-4 basses. You need to check that. I get 8.75R/15uF.
mh-audio.nl - Home
W 130 S - 4 Ohm

You have to double the DC Resistance (3.5R) and Inductance (0.6mH) with two in series. Bafflestep is a moveable feast. 4dB is usually about right. But if you want more bass, you definitely need bigger drivers.
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Old 15th March 2017, 03:45 PM   #15
Mrcloc is offline Mrcloc  South Africa
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Ok, thanks. I got those values too, but I didn't know how to smooth the curve.... I'll look further into this. I unfortunately don't have access to anything, except Visaton, and then no name stuff. PA speakers are readily available, but those won't cut it.
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Old 15th March 2017, 04:10 PM   #16
system7 is offline system7  United Kingdom
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I wasn't suggesting SEAS drivers at all. But any project should be based on a good idea that works. And MTM is a good idea.

The W130S is quite a difficult driver, IMO. You'll probably find the W170S-4 easier.

These tweeters are worth looking at:
G 20 SC - 8 Ohm
SC 10 N - 8 Ohm
DT 94

TBH, tweeters are fairly interchangeable. The SC10N and DT 94 (which I have used) are louder 91dB types, the G20SC is a 88dB type which Lojzek has said nice things about.
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Last edited by system7; 15th March 2017 at 04:16 PM.
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Old 15th March 2017, 04:26 PM   #17
Mrcloc is offline Mrcloc  South Africa
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Legendary advice, which I very much appreciate!
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Old 15th March 2017, 04:31 PM   #18
system7 is offline system7  United Kingdom
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Lojzek's splendid dumpster diving seems to have rustled up a fun tweeter there:

Click the image to open in full size.

Here's some Visaton experiments I did a while back. Both pretty good.

8" W200S-8, DT 94 and TW 70 cone tweeter. Actually the port was a bit small, so I fitted an old Sony 8" bass I had lying about.
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File Type: jpg Visaton Drive Units system7 lashup.jpg (81.9 KB, 158 views)
File Type: jpg Visaton REflex Two Way.jpg (66.2 KB, 158 views)
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Old 15th March 2017, 04:51 PM   #19
Mrcloc is offline Mrcloc  South Africa
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So what so you think would be better, 2xW170S, or 1xW200S? And 2xW200S? Will that do well? Perhaps 1xW200S and 1xW170S, or even a W100S? I'm going to play around with these in boxsim tonight, but I have absolutely no experience with these drivers, or really with high-end multi-way speakers. I'm trying to get something that will blow my Celestions away, and they're pretty good.
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Old 15th March 2017, 05:44 PM   #20
Mrcloc is offline Mrcloc  South Africa
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I think the main thing with the Celestions is that they lack a little definition in the midrange, and they're not balanced at low levels.
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