You haven't seen my mullet. Full late-season Miami Vice era Don Johnson. 
Two drivers in bipole: 'business in the front, party in the back.' 
If they're both full range, I'd wire them in series, and put a low value cap across the bottom one. I also have long hair; is it something that advocates of full range drivers share?
Ye olde mullethunters website is still active. Honestly, I'm more surprised by that than the return of the mullet
It's my substitute for achievement.
Well-known examples are the Seas Thor, Tritrix TL, early versions of the Ariel and many others.
Yes, it's a well-known photograph. Per my answer above: like every QW enclosure where a pair of drive units share the same volume / line, as far as exciting the resonant modes go they acoustically speaking function as a single ovoid unit with the tap / offset location being the centrepoint between the pair. If two [more or less] identical drivers share the same volume, you dont (can't) have an independent line / box tuning for each. It's not unusual to have a QW / TL variation with several drivers. Here's an MLTL I did recently: https://www.markaudio.com/wp-content/uploads/2024/11/MA200M-CHN50-MTM.png
Well-known examples are the Seas Thor, Tritrix TL, early versions of the Ariel and many others.
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I'm going to play devil's advocate. Primarily, and significantly, they will be under the same conditions and this is the wanted effect.
On the other hand a transmission line has length so that modes can be realised. That is to say it is acoustically large so there is a gradient along it's length. The drivers were also placed away from one end, acknowledging this...
On the other hand a transmission line has length so that modes can be realised. That is to say it is acoustically large so there is a gradient along it's length. The drivers were also placed away from one end, acknowledging this...
Not at all -you're absolutely right; that's what I was referring to when I mentioned 'tap / offset location'. In the case of a pair of drivers, which as far as the line is concerned at these frequencies represent a mild oval / oblong, it's effectively located at the mean / centre point between them. End loading provides maximum excitation of the fundamental & all relevant harmonics, which isn't usually ideal, so most QW / TL variations have some offset of the driver or drivers & often the vent to reduce excitation of the unwanted upper modes. You lose a bit of efficiency with the fundamental too, but the benefits usually massively outweigh any minor loss there & you can compensate if necessary by increasing the acoustic volume. Since many are designed that way from scratch, that often tends to come automatically.
Where it can get more involved are things like the old Transflex or the DSL style [double] tapped horns since the driver / drivers are exciting the pipe at dramatically different locations, but for most direct radiators like the PMC above that doesn't apply.
Where it can get more involved are things like the old Transflex or the DSL style [double] tapped horns since the driver / drivers are exciting the pipe at dramatically different locations, but for most direct radiators like the PMC above that doesn't apply.
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Been watching the entire series lately on OTA TV to see what all the 'fuss' was about way back when it first aired. At the time I had a life, so little time for TV, but did get involved re whether the various Ferraris were real or fakes (they were all basically so-so kit cars except for close-ups).You haven't seen my mullet. Full late-season Miami Vice era Don Johnson.
A shame the 'foxy' daughter ultimately got type cast as a one dimensional sex 'siren'/'tramp' if her cameo on a 'Big Bang Theory' TV episode is any indication.
Miami Vice = best US series I've ever seen (love M*A*S*H & Bosh though I do).
Yeah, there were a lot of very decent actors in the main & guest cast -I'm still impressed at how good Davis, Frey, Zappa & Nelson were when they did their cameos. Some early performances by big names now too. Bit ironic that the series has been described as a 'joke' for decades, since it's black as a coal bin. I caught the very tail end first time around (I was 11 / 12 when it ended) & finally fell in love when I caught a few episodes on Men & Motors (give me strength) & went out & bought the box sets the next day.
Interesting time though -you couldn't make Vice again. Not like that, anyway -it needed a bunch of circumstances to all come together at the same time. Launch of MTV, widespread luxury off-the-peg fashion culture & its promotion, new technologies, a huge percentage of the drugs in the US entering through Miami, proximity to the Vietnam war, interventions in central / south Americas. Could only happen in those few years in the '80s.
Right -IIRC the 'Daytona' convertable was a Corvette under the skin. Ferrari liked the publicity but not that it was a known fake, so speaking from (very) fallible memory they gave them the Testarossa to use, resprayed white from black to show up better on night shoots, with a bunch more kit-car doubles standing by to hammer when they had something a bit riskier in mind. 😉
Yeah, there were a lot of very decent actors in the main & guest cast -I'm still impressed at how good Davis, Frey, Zappa & Nelson were when they did their cameos. Some early performances by big names now too. Bit ironic that the series has been described as a 'joke' for decades, since it's black as a coal bin. I caught the very tail end first time around (I was 11 / 12 when it ended) & finally fell in love when I caught a few episodes on Men & Motors (give me strength) & went out & bought the box sets the next day.
Interesting time though -you couldn't make Vice again. Not like that, anyway -it needed a bunch of circumstances to all come together at the same time. Launch of MTV, widespread luxury off-the-peg fashion culture & its promotion, new technologies, a huge percentage of the drugs in the US entering through Miami, proximity to the Vietnam war, interventions in central / south Americas. Could only happen in those few years in the '80s.
Right -IIRC the 'Daytona' convertable was a Corvette under the skin. Ferrari liked the publicity but not that it was a known fake, so speaking from (very) fallible memory they gave them the Testarossa to use, resprayed white from black to show up better on night shoots, with a bunch more kit-car doubles standing by to hammer when they had something a bit riskier in mind. 😉
+1 Could be........... when military/'flatop' buzz cuts were the norm I was sporting Kookie's Pompadour/modest 'DA' (Duck A$$)