Those have to be registered with the USGS and IAEA.
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Big E Speakers Part 4 - Quadraphenia
- Thread starter kesslari
- Start date
Those have to be registered with the USGS and IAEA.
Since I acquired two nice combos recently my MAS GAS has subsided to some extent. I do wish I could experience the 115 (or any other cab for that matter) in person. What I have now more than covers my needs and I doubt that I could get a single or dual fifteen cab up to the volume needed to engage the vortexitude but I still want one, if nothing more than because I could. Like using a .50 AE Desert Eagle as your CCW.If my experience with the 115 is any indicator, you definitely need some help.
Ok--I'm learning bit by bit as far as this speaker thang. Most drivers that are considered 8 ohms are actually lower. Like 5.24 to 6 ohms. I talked to Duke and Jerry at Eminence ----Duke had the same question for Jerry, because he was doing a 215 where the Re of each driver was 5.24. This driver was present in a few commercial 215 cabs. Or the same as two of the 12" drivers---which are present in a lot of cabs.In other words---if you parallel two 5.24 drivers you get 2.62 ohms. Most 212, 210, and 215 cabs are in this same boat.Jerry (who is the head designer) said that 1. he's never heard of an amp having trouble driving this because 2. The speaker never really goes that low in use.
So--the two driver choices for the 66 are the 5.24 ohm (8 ohm) driver or the 3.56 ohm (4 ohm driver). With the 8 ohm driver I series two drivers (10.48 ohms) and parallel the 3 pairs ---so----3.49 ohms. So, if I'm using the "8 ohm" drivers it actually yields a 4 ohm cab.
If I use the 4 ohm drivers I'm putting 3 drivers in series---10.68 ohms---and the putting each 3 driver series in parallel yielding 5.34 ohms---essentially an 8 ohm cab.
Nomantic's uses the 4 ohm drivers so it's actually an 8 ohm cab combined with the 8 ohm subwoofer. Interesting thing is that the 10 incher is 7 ohms---pretty high for a nominally 8 ohm driver. Jerry needed it that impedance to get the "Q" where he wanted it. So that woofer would probably be stable even with the 4 ohm cab. But the balance is probably best with the 8 ohm 66.
Make sense?
Yeah man---really got me thinking. The VD (volume of air moved) of the 110 sub is around 600cc's. The Vd of the 66 is around 900 cc's. So the 110 is going to be the limiting factor. The extra 300 cc's of the 66 are kindof lost because the 110 will fart out first. The MAS46 is around 600 cc's---about the same as the sub. So, combining a 46 and 110 sub should yield all of the benefits of the 66/110 combination. Total output of around 1200 cc's. More than a 410 or any 15, also. more than any 212.
This is a really cool thing about Talkbass. It likely wouldn't have crossed my radar to combine these two. As much as Nomatic digs it, I think I can mess around with the crossover to improve it a bit over what he's experiencing.
The cab would be 26 wide by 28 high by 14 1/2" deep. And around 60#. I'm building one next week. BTW---I'd use the 8 ohm drivers--series/parallel---yielding 5.24 ohms. Same as the 66.
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This said (I've noticed this also and validate cabs I use with a multimeter) can you share any practical amp knowledge regarding 5StringPocket's question? How much variation is present in an amp by design, if any? Obviously this will vary amongst mfg's, models, etc; where's @agedhorse when you need him? Or maybe @JGR?
Your answer to my impedance question does make sense. You really dug into that one. Thanks. I know impedance varies with frequency, loading, and a few other factors so it is anything but fixed. Nominal impedance seems like a useful ballpark number when matching amps with cabs and combining loads but if you're not running hot or distorted and it sounds good you're probably alright. Still digging my MAS66 twins but that 46/110 sounds interesting - mad scientist at work on another new creation... Muuhaha
This said (I've noticed this also and validate cabs I use with a multimeter) can you share any practical amp knowledge regarding 5StringPocket's question? How much variation is present in an amp by design, if any? Obviously this will vary amongst mfg's, models, etc; where's @agedhorse when you need him? Or maybe @JGR?
Duke and I have talked about this at length. Which is why he asked Jerry at Eminence. He designed all of the Kappalite as well as other models and is now chief designer. His experience is that he's never had a single problem running two 5.24 ohms (nominal 8) into any amp rated as a 4 ohm minimum. Since he's supplying drivers to 80% of the manufacturers---I trust his opinion.
Hey Mike, out of curiosity, is there a particularly correct way to mic a MVW cab? We recorded the 115 last night and it sounded fantastic, but my singer and I were just curious if there is a preferred way. Also, would there be any phasing issues in the low end with how the vortex works when combining the recorded sound with a DI line?
Stephen Regier
Commercial User
- Apr 11, 2014
- 78
- 131
- Disclosures
- Co-Inventer and Co-Owner of Big E Loudspeakers Technology
I would recommend either a mic close to the transducer cone or at a distance greater than one meter from the front of the loudspeaker. I would not recommend a microphone near to Output Flare (port) as the multiturbulent hydrodynamic flow may cause unwanted artifacts as well as an absence of definition. This is because the energy has not yet reached equilibrium with the ambient environment.
To successfully combine the mic signal with a DI signal I would suggest a close mic to the cone about 20% of the cone radius inward from the cone suspension with the mic capsule aimed at a 45 degree angle from the radiating plane of the woofer pointed towards the mid-tweets. If studio noise is not an issue a far-field boundary mic at about three meters would add some nice ambience and MVW flavor.
Stephen Regier
Commercial User
- Apr 11, 2014
- 78
- 131
- Disclosures
- Co-Inventer and Co-Owner of Big E Loudspeakers Technology
Thanks, we're in the midst of all the extra Vortexitude...and loving it! - safely.
Cool. In my area we call the 20 or 30 year events "shift happens". You guys get more frequent challenges.
lelandcrooks
Commercial User
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I believe my 26 is the current version w/ 2 mids. Special 4ohm version though i understand the alt impedence drivers are available now. The 26 and 109 sound more alike than different really, not too surprising as. They have the same mids in both, the 109 is larger and louder and 8(6) ohm.
I was surprised to receive my new MAS 112 aka
the purple tank yesterday! I didn't even know it was on its way to me.
After breaking it in a bit I was in love! The low end is tight but deep, and the mids have a nice little bump in the upper end of the range. The ciare tweeter adds just enough extra highs on top.
The build quality is awesome and the purple is too cool for school. I was worried it would be too flamboyant, but it is nothing but cool. Can't wait to get it into a mix.
Thanks Mike!
After breaking it in a bit I was in love! The low end is tight but deep, and the mids have a nice little bump in the upper end of the range. The ciare tweeter adds just enough extra highs on top.
The build quality is awesome and the purple is too cool for school. I was worried it would be too flamboyant, but it is nothing but cool. Can't wait to get it into a mix.
Thanks Mike!
That purple is sexy. Are the two buttons in the vortexitude window the switches for altering the tone?
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