I'm not a huge Eden fan, but I quite liked the NC200 combo I had for about a month last year until I bought my Markbass combo. For $250 you couldn't beat it. Never got to stack it on its side, though. I sold it before I "discovered" it.
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Vertical cab stacking---the only way to play
- Thread starter JimmyM
- Start date
billfitzmaurice
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- Sep 15, 2004
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- Owner, Bill Fitzmaurice Loudspeaker Design
The horizontal angle of dispersion is inversely proportional to the width of the source, but varies with frequency. Side by side tens with the frames touching have a radiating plane (cone edge to cone edge) about 18 inches across. 18 inches is one wavelength at about 750 Hz. Below that off-axis response will be good. Above that the dispersion angle narrows, getting narrower the higher you go. With the tens vertical the radiating plane is about 8 inches across, and the zone of wide dispersion goes up to 1.7 kHz.
Rick Auricchio
Registered Bass Offender
Jimmy, the 112s are 8 ohms each, and the 210T is 4 ohms.
Combinations:
Single 112: 8 ohms
Dual 112s: 4 ohms
Solo 210T : 4 ohms
112+210 : 2.67 ohms
All three: 2 ohms
The configurations under 4 ohms require me to use the WT550 (shown in the photo). For a 4- or 8-ohm config, I have the option of using the WTX260.
The full-stack configuration actually runs the four drivers in parallel, due to the internal parallel connection inside the 210T. Since the 210T's drivers are 125w units, that will limit my overall power to 4x125 (500w), though the WT550 will put out 750w into a 2-ohm load. The 112s will be loafing.
All cabs are rated at 103dB sensitivity, so their relative levels should be similar. I haven't tested the full stack yet.
Combinations:
Single 112: 8 ohms
Dual 112s: 4 ohms
Solo 210T : 4 ohms
112+210 : 2.67 ohms
All three: 2 ohms
The configurations under 4 ohms require me to use the WT550 (shown in the photo). For a 4- or 8-ohm config, I have the option of using the WTX260.
The full-stack configuration actually runs the four drivers in parallel, due to the internal parallel connection inside the 210T. Since the 210T's drivers are 125w units, that will limit my overall power to 4x125 (500w), though the WT550 will put out 750w into a 2-ohm load. The 112s will be loafing.
All cabs are rated at 103dB sensitivity, so their relative levels should be similar. I haven't tested the full stack yet.
http://www.talkbass.com/forum/attachment.php?attachmentid=93906&d=1213301494
How about using #1 with the top cab with the horn on the opposite side, mirroring each other.
billfitzmaurice
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Rick Auricchio
Registered Bass Offender
Right. You need the tweeters in vertical alignment too. So it's either #1 or #3. I may flip the badges too.
Comb filter? With hair like I have, I don't even carry a comb!
Comb filter? With hair like I have, I don't even carry a comb!
If you mean the Bag End stack, it's a black XLR connector which is often plugged into the DI of the amp ... it's very quiet at the moment
...my photography skills aren't the best... not by a long shot.
I've been playing with mic's for a bit as I can beg or borrow them. I intend on an RE-20 or TLM 103 deal depending. The RE-20 is the better bass cab mic to my ear - maybe the best. The TLM is very good and way better as a multi purpose mic. So in my project studio - multi-tasker's are looked favorably on as budget maximizers.
Before you settle on the RE 20, try out the Heil PR 40 if you can. It's a lot like the RE 20, only it goes down to 28 hz. And it's $75 cheaper. I was going to get an RE 20, but I went with the PR 40 instead, and I think I made the right decision. Makes a nifty Swiss Army Mic just like the RE 20 but the low end response is amazing.
Rick Auricchio
Registered Bass Offender
I just noticed Bill's note on his forum that one should not run two different cabs covering the same bandwidth. Perhaps my idea of stacking the D210T with the D112(s) might not be such a good idea?
unfortunatly, no matter how you stack them, you will have time delay because they are two different distances from your ear. they will add at some frequencies, subtract at others and have time smear. is it possible to deactivate the bottom tweeter? it will be clearer on the top end. johnny a
I'm having issues with the verticality of my new stack. On their ends or on their sides - just doesn't seem to make a difference ...
Vertical cab-stacking for dummies. I'm right there with ya!
billfitzmaurice
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A crapshoot. Every speaker/driver has its own unique phase response. When you combine different cabs/drivers their differing phase responses will compliment each other at some frequencies, fight each other at some frequencies, and the result is totally unpredictable. Well engineered speaker systems always use a crossover to assign frequency bandwidths to the various drivers in the system. Well engineered systems also don't mix drivers of similar sizes, there's no advantage to having less than a 2:1 cone size ratio and many disadvantages.
Rick Auricchio
Registered Bass Offender
I'm spending lots of time this morning on your forum, Bill, reading about the O10.5 enclosure....
I've read through the whole topic... What about the PORT placing? the port works at the same frequencies as the woofer, so should it be UNDER the woofer? to eliminate comb filtering effect.
so slot porting is better then one or more tubes on the side?
so slot porting is better then one or more tubes on the side?
billfitzmaurice
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I've read through the whole topic... What about the PORT placing? the port works at the same frequencies as the woofer, so should it be UNDER the woofer? to eliminate comb filtering effect.
so slot porting is better then one or more tubes on the side?
Combing occurs when the acoustic centers of the sources are over one wavelength apart. The shortest wavelength radiated by a port is about ten feet.
Please excuse my ignorance here Bill
Does that mean that it's OK to flip and stack cabs on their sides as long as the drivers of the same dimensions and horns are in the same vertical axis, and it doesn't matter whether the ports are oriented on the bottom or sides of the cabs?
For example, I have two Warwick WCA 211Pro cabs like this:
I stack them vertically so that the W on the grill looks like a capital "E".
The 10's are in axis vertically, as are the horns, and the ports are all lined up vertically along the right hand side.
Is that port orientation OK?
Thanks,
Luke.
billfitzmaurice
Commercial User
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YesPlease excuse my ignorance here Bill
Does that mean that it's OK to flip and stack cabs on their sides as long as the drivers of the same dimensions and horns are in the same vertical axis, and it doesn't matter whether the ports are oriented on the bottom or sides of the cabs?
Yes. The wavelengths sourced by the ports are so long that they can literally go anywhere.
Bill as long as you're answering questions...I have the Music Man2x12 (picture here incase you forgot what they looked like http://cgi.ebay.com/ws/eBayISAPI.dl...ndexURL=0&photoDisplayType=2#ebayphotohosting) and was wondering if I'd be better off laying the darn thing on its side w/ that port thingie verticle instead of on the bottom?
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