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    Speaker building update 4: It’s ALIIIIIVE!!


    2011 - 04.23

    This last weekend had cause for celebration: the loudspeakers are finished*!

    *”almost finished”.

    It was a triumphant moment to sit back with a beer and just listen for a few hours.  This is the moment of payoff, with sweet sounds being the spoils of victory.

    As with so many long projects, I found myself rushing down the home stretch.  I did have one moment that sort of cut through the frenzy; when I turned the soldering iron off and realized, “Huh.  Well, that’s it, there’s no more soldering to be done.”  For a brief moment it actually bummed me out, that the section of the program flush with the thrill of ongoing creation was about to conclude.  As quickly as it came, it left, as I reminded myself that the rest of the night would be devoted to listening.  Ahh, tis a blissful thing, high fidelity.

    A large part of the joy in building loudspeakers is listening to familiar recordings on them, and finding things to hear that you never heard before.  Inevitably, a given pair of speakers will reveal something new to you, no matter how authoritative your reference set in the living room or the richness of your open-back headphones.

    Firing up the album “Arboreal” by The Flashbulb brought forth a whole slew of details that I had never heard before.  Notably, I learned that there is a low-res filter over a lot of the synths in “A Million Dotted Lines”.  Never caught that.  Miles Davis’ “In A Silent Way” also makes for excellent auditioning.  “Fahrenheit Fair Enough” by Telefon Tel Aviv blew me away with the lush Rhodes intro, and the outrageous density of electronic sounds and tweaks as the beat drops.  That track is like pop rocks+coca-cola for your ears.

    The Scan Speak tweeters are crisp.  They’re quite ‘forward’ for a fabric dome but I don’t think “bright” accurately captures their timbre.  I think “articulate” would be the best word to describe the sound.  Definitely a good bang for the buck, no doubt.  Would I get them again?  Yes, if I wasn’t so curious to try other brands and types of tweeters.  I’m all but certain that my next speaker design is going to have a ribbon tweeter.  I’ve always been curious about those.

    I’m definitely glad that I included an L-pad in the design (a volume control for just the tweeter, which is a first for me).  When the L-pad is set to max, the speakers sound topheavy.  Those tweets are rated at 91.4dB with a 6 ohm impedance, while the woofer is specified as 91dB at 8 ohms.  It may be that the lower impedance causes the tweet to draw more power, in spite of the nearly identical efficency rating… although those impedance ratings somewhat come down to semantics.  Something I still need to do is measure the overall frequency response of the system.  That will be illuminating.  But with the L-pad at max, the speakers sound bright, the same way that “flat” response studio monitors commonly sound bright.  So these babies should work good for mastering duty.  And when you just want to listen, you can dial back the treble for a more balanced sound.

    When I sat down to listen to these guys, I really wasn’t sure what the ideal setting for the L-pad should be.  One surprising detail I figured out is that it really depends on what you’re listening to.  To broadly generalize, I liked them “hotter” for electronic music, with the pads at -2/3dB.  For jazz and folk music, they sounded best at about -4/5dB.  And for rock music, I liked them dialed back to maybe -7dB.  It’s pretty cool being able to control the sound quality by adjusting the tweeter output.  Next time I build a new set of speakers, I will definitely include L-pads again.  It’s almost like getting to have many different pairs of speakers all inside one box.

    There remains a few things which must be done before these guys are completely “done” and ready for duty.  Number one on that list is that I need to replace one of the binding posts: I was using a ratchet to fasten down the bolt/washer on the inside and holding the outside terminal steady by means of a drill bit inserted into the cable opening when SNAP! the post broke in half!  Apparently I don’t know my own strength?  For a brief moment I was very distraught that I wouldn’t be able to listen to them for another week!  Then I realized I could just solder the connecting wire onto the broken terminal.  A ghetto patch, but it’ll work until I can get new terminals in the mail.

    I also didn’t bond the flared port tubes with ABS cement yet.  Part of me wonders if they are really the correct length.  I used the formula that came with the flared tubes to determine the port length, which is a very short 5″.  That only left about a 1″ section to be straight, while most of the port length is taken up by the flares.  I did calculate that airspeed through the port and it was low enough that I really didn’t need to use flared ports, but I think they look cooler, and they didn’t add that much extra cost (yay sales!), so why not.

    I may or may not need to change a few things after I plot the frequency response too.  More or less foam inside, inverting the polarity on the tweet, etc.  Before I put the foam on the inside of the enclosures, these things were BOOMY.  It kind of scared me.  Thankfully adding foam made a big difference.

    So yeah!  They’re finished!  If you ignore the fine print anyway.  Some tweaking will be going on over the next couple weeks.  Expect to hear more!

    Speaker building update 3: Green Meanies


    2011 - 04.10

    check these suckas out:

    My bro asks for GREEN.  Green it is.

    The lady who mixed the paint for me was cool.  She was probably in her 50s and seemed like she belonged in a neighborhood greenhouse rather than a Lowe’s.  She was like, ‘now that’s a green green.’  Heh, yep.  I did two coats over the white primer and I think they look ready for finishing.  You’ll notice the hole on the side of the right speaker; it’s for an L-pad (a volume control for the tweeter).  I drilled it with a hole-saw attachment for my power drill.  A steel bit cutting into MDF… it would slow to a halt and I had to back it up and plunge it back down repeatedly to get it to cut all the way through.  When one hole was complete, the drill bit was literally smoking.  There was smoke coming out of the tweeter hole too.  It was sort of badass.

    This weekend some Envirotex arrived in the mail, and I’ve been covering these cabinets in it.  Seems like it should provide a durable finish, although time will tell.  If successful, this may become my chosen method for speaker finish.  While messy, it’s easier than endless coats of lacquer and sanding.  More detailed impressions to come…

    Have a listen to the 70’s Style Jam.


    2011 - 04.04

    There’s some new streaming content available on the trumpet page now.  Click the cassette next to the Electro-Acoustic Workshop (or just click here) and listen in without the need to download anything.  This was an awesome evening that goes down as one of the coolest jam sessions I ever played while in Chicago.  Lots of heavy hitters sitting in, and just an overall happening vibe.  I recommend having a listen to the “70’s style jam”.  Word.

    Joy in Rediscovery, Part One.


    2011 - 03.31

    aka Finding  the Meaning Model Railroad Edition?

    So my model train locomotives that I’ve been waiting around a half a year for arrived in the mail last week. So. Exciting. Few people will understand why, but it is. I subscribe to the Milwaukee Road Modelers Yahoo usergroup, which is an incredible resource and a fascinating discussion forum that I’d recommend to anyone interested in such affairs. On the group, one member Eric, who is like mister milwaukee electric, chimed in that he had gotten two of them, and one couldn’t pull much weight. Naturally I had to test mine, but my train layout was packed up in boxes. What to do…?

    First, I went digging for spare track. There was an old fluorescent light cardboard box stuffed full of it out in the garage. This I had wisely purchased off eBay a long time ago, and it had formed the backbone of my old layout in Chicago. Second, a trip to the local hobby shop for some rail joiners. I know I have a ton of them somewhere, but a daunting stack of sealed boxes packed tight with many small objects stood between them and myself. Armed with these, and a power transformer which had been easy to locate among the moving boxes, I set up a long, straight test track to find out how many cars my new engines could pull.

    Somewhere along the line of setting this up, I had the thought, wow, I wonder how long it’s been since I’ve actually set up a train track on the floor? Probably not since I was a kid. For that matter that last time I ran a model train was the beginning of last June. Ten months ago.

    With the train on the track, I turned up the juice. It was the same transformer I had as a kid, the same knurled handle applying those volts to make a miniature fantasy-land come alive. A familiar old feeling I hadn’t felt in some time came rushing back; the excitement of a tiny network of gears and axles churning under my command. There is some child-like wonder inherent in the animation of these bits of plastic that takes me back to someplace hard to reach, someplace hidden. Late that night, I myself was transported; backward through time, lying on the carpet, watching the long stretch of passenger cars move back and forth.

    A friend of mine once said, “Don’t ever let anyone tell you what you should or shouldn’t do on your railroad–it’s YOUR empire.” Indeed. And while my empire resides primarily inside of boxes at this point, I have no doubt that these two will be big stars when it makes a triumphant return.

    Progenitor of Jams, Beats, Vibes… the Birth of EMOTIONS, Dawg.


    2011 - 03.22

    This weekend I spent a lot of time working on a project I’m excited about: new speakers. These speakers are not for myself, they’ll be a birthday gift for my little brother, but still! Building loudspeakers is something I’m definitely passionate about, although this is the first time I’m mentioning it on the site. So let’s get into it!

    First of all, why is this cool? Well, a ton of reasons. Building speakers is an art of trade-offs. There is, and never will be such thing as ‘perfect’ speakers. Every system is a compromise in some sense, with strengths in some areas and weaknesses in others. For example, the two main strengths in the ones I’m making right now are a high efficiency rating of 91dB (pretty good! This means that given less power, these speakers play louder than most), and a very smooth frequency response. The smooth frequency response was my main goal; important because my brother is going to recording school. If he’s going to be using these to audition recordings and potentially do mastering, it’s critically important that they don’t add their own ‘color’ to the sound. Speakers with choppy response curves can still sound great, but they add their own personality to the tone, which does not copy over to any other stereo setup. So it would be a terrible idea to master a recording on a system with a response curve that has lots of peaks and valleys. The weaknesses would be that I maybe didn’t get as deep of a bass response as I would’ve wished, and the price went a little higher because I insisted on drivers with good responses. In order to try to keep the costs down but still use good components, I omitted a midrange and used only two drivers per channel. For the enclosure, I chose to use a port to get what bass I could. I’d prefer a sealed box, but again, these are the compromises that you get forced into making. It’s part of what keeps it interesting.

    There’s also the brand name aspect too. Just like having your favorite sports team or buying new shoes from your favorite brand, getting speakers from a particular maker is sort of exciting in and of itself. This time around I picked a tweeter from a Danish brand I’ve always wished I could afford, Scan Speak. Scan Speak is very highly regarded in the industry, and with that awesome pedigree comes an accompanying price tag. I’m guessing the recent economic downturn led them to eschew their typical snobiness and produce a series of drivers ‘for the people’ called their “discovery” series. Maybe it’s called that because it’s my opportunity to “discover” what it’s like to listen to Scan Speak (on the cheap)? This I look forward to.

    Something else very neat about speaker building is how long lasting it is. I built myself a pair in high school, and with one driver replacement (right midrange went bad) they’ve been serving me faithfully ever since. That’s well over a decade of listening. GOOD listening! I built another set for my buddy Luke, probably over a decade ago as well. Not long ago he told me he’s still lovin’ them and they continue to serve as his main listening system. That’s so rad! It brings me joy to think about this; the construction that I’m setting in motion in my garage today will last for decades. These are long term actions right now.

    And more than that–these things will be making MUSIC! There will be huge moments of rocking out, when you’re getting ready to go do something great and you put on some tracks to pump yourself up! There will be mellow times late in the night when you come home and put on some chill vibes before you wind down for bed. Sad songs for when you just need to wallow in despair for a while, or daily anthems to get you into the groove of doing what you need to get done. These things are mood machines. Life enhancers. Tone establishers. Music colors our lives, it shapes our feelings. All those emotions will be flowing forth from these paper cones and cloth domes. I love that idea. LOVE IT!

    In the morning, I cook myself an omelet with red onion, cheddar, and spinach. Filled up and ready for action, I head out to the garage. The sun is searingly bright and as I step out, I hear a crescendoing rumble in the sky. Before I can even step out onto the driveway, I say to myself aloud, “what the hell IS that?!” As I pass under the garage door I look up and see one of the biggest propeller planes I’ve ever seen flying very, very low overhead. It’s a 4-engine passenger plane, like one of those vintage prop-airliners from the 60s or something. Very unusual, and a pitch-perfect start to the day. It’s like a good omen. I watch it lumbering slowly across the sky in a wide arc as it turns toward the nearby municipal airport, slipping away behind the treeline.

    Making speakers is something I love doing so much that if I could choose one thing to do for the rest of my days, building speakers would be near the top of the list. While I was out in the garage, I thought back to Geoff Marcy and his story of picking what he wanted to do with his life. Things weren’t going good and he knew he had to make a decision to go in a new direction. He thought, well, what I really want to do is find planets even though it seems like a crazy idea. There’s really no money, glory, or fame in it, but I just want to do this because that’s what makes me happy. I could say the same thing about speakers.

    So here I am, out in the garage, doing one of the things I love best! It is literally an ideal spring day, with temperatures in the high 70s and a nice cool breeze. I’m out with my measuring tape, drawing lines and slicing wood panels with my circular saw. There’s brown aviator sunglasses on my nose, to protect against wood chips and the blinding Texas sun. A few mistakes here, a curse word there, and a course correction gets me back on track. By the day’s end I will begin to see the cabinets take shape, and there are very nice looking flush-mount circles cut with my new router for the drivers. This is a new skill I have learned today, seen in the lead picture at the top. A neat speaker cutting jig helped me get just the right cut. Using these new tools is gratifying.

    Mid afternoon I uncap my water bottle and take a huge swig of the cool refreshment inside. Stopping to assess my progress, it’s uncanny how quiet and peaceful things are between the rounds of power tools. Birds chirp somewhere in the trees and the streets are empty. No one else is here, no one super into this the way I am. It feels like this instant is a triumphant moment, but without anyone else around who ‘gets it’ enough to chime in and say “oh man, what’s happening right now is so sweeeet!!” The absence of conversation feels both ironically strange yet somehow appropriate in an inexplicable way. Here I am, by myself in the garage, making it happen, “blowing it up” so to speak. I guess this sums up what it’s like being into niche hobbies, hey?

    There’s a tiny bit of red sunburn on my neck and a mix of sawdust and sweat on my brow. I am in an odd mode of excitedly rushing to get to the next step yet leisurely configuring the power tools for my next operations. Occasionally a dog-walker goes by, curiously eyeing the piles of wood, my setup of sawhorses, and various power tools strewn about. Sporadic flocks of kids fill up the air with sound as they pass down the block. Now and then I hear the distant roar of a power saw from someone else’s garage. It’s a great day to get some work done. Maybe once an hour I stop and look around, conscious that I’m doing something I love, which I only get to do once every few years. Building loudspeakers is expensive. And time intensive. A whole lot of planning goes into picking the drivers, crossover points, cabinet design; this is sort of a sacred moment, The Moment Of Genesis when ideas begin to take physical form.

    There may be no money, glory, or fame in it, but I have a lot of love for the speaker building art. I don’t think I could ever make a living off of it, even if I decided I was willing to risk it all to try. But I hope to build many more sets over the years, to share my love of high-fidelity sound, and help give to other people the experiences that their own DJing can give to themselves, with crisp detail in the playback.

    Primo Vino Art: Rock Lobster


    2011 - 03.20

    Third installment of the celebration of awesome pieces of art for wine labels; this California Zinfandel.

     

     

     

     

     

     

     

     

     

     

    scratch made


    2011 - 03.13

    Scratch made pizza is the best. THE. BEST.

    Here we’ve got freshmade dough from the market, part skim mozzarella in block form (yes, that’s a lot of shredding), turkey pepperoni, basil, red onion, and orange pepper.  My favorite combo!  Mmmmmmmmmm

    Finding the Meaning: GTA Edition


    2011 - 02.26

    This is a long one, but hear me out: it ends in a great story–even if you hate video games.

    I’m a big fan of the video game blog Kotaku. Every day it’s a steady stream of news to check out, and they often have articles which are just musings upon what the editors liked about ‘the experience’ of playing a particular game. Often even more interesting is what you find in the comments on these articles; random people chiming in about their individual experiences, which is sometimes like a kaleidescope of perspectives and appreciations for different subtleties, and the stories that accompany them. I find it fascinating, reading about the reasons why people enjoy things, or that transcendent moment that ‘did it’ for them.

    One of my favorites was an article published shortly before the release of the fourth Grand Theft Auto entitled “GTA: Rememberances of Cars Jacked” which related lasting memories of experiences in the game and asked commenters what their favorite stories were. At the beginning of the article, Owen Good writes that one of the distinguishing hallmarks of the series is its ability to impart these moments of greatness “that rates the kind of visceral, first-time-ever memories that people usually have of events in the real world.”

    My friend Luke once described to me playing GTA: Vice City at a friend’s house. They were playing through the game near the beginning and had just obtained their first uzi submachine gun. Luke had stolen a motorcycle and was riding along the strip in Miami Beach, that famous stretch with all the vintage art deco hotels. Against the backdrop of neon signs, bikini-clad pedestrians, and 50’s-looking cars, he discovered he could shoot the uzi straight forward, something you can’t do in a car. He described finding the set of wooden ramps that lead to a set of daring motorcycle jumps across the rooftops, and taking that first wild jump where the camera suddenly swaps to a dramatic angle and the time goes slow motion. Through some convoluted series of police chases and blasting random cars with his new grip, he wound up back on the strip, looking out at the ocean–when right then the song “Shoot It Up” came on the radio.

    It’s one of those moments where you’ve just pulled off the craziest stunt, you can hardly believe you somehow came out unscathed, a bombardment of unexpected insanity ensues requiring deft maneuvers to escape, and then right in the thick of it all, that perfect song comes on and BAM, you’re not just sitting on the couch at a friend’s house–you’re transported. You’re in Miami. You smell the salt of seawater in the air, feel the breeze on your face, listening to the sounds of some song you haven’t heard since forever ago and it takes you back to some strangely-foreign, strangely-familiar place in your childhood. In that moment it really IS the 80s. You are THERE.

    Some of the more awesome comments from Kotaku:

    “Over the years and through three GTA games, we’d have a playsession once a week where (my friend and I would) each play a ‘turn’ wreaking havoc and trying to survive. When one of us would die in the game, we’d hand the controller over. His very first time playing GTAIII was especially memorable: after having seen me play it, he really wanted to steal an ambulance. So when he got the controller, he immediately popped a pedestrian and waited for the ambulance to arrive. When it did, he killed the EMTs and stole the ambulance, roaring in triumph and raising his fist in the air. I about fell off the bed laughing when, six seconds later, he drove the ambulance off a cliff and into the water (and died).”

    “I loved (the radio) so much, I actually bothered to rip the audio from the game discs of GTA3 and Vice City and converted it to play in my real-life car. Uncut, with (fake) commercials and all.” (I actually did the same thing for K-JAH/GTA3 and Radio Esperanto/VC)

    “The day I beat Vice City I watched all the Back to the Future movies and sewed all the Homestarrunner patches to a pair of tattered jeans I had. I was flying high and I couldn’t believe that after all the times I’d tried before, I’d finally done it. I was with my first gamer boyfriend (I know!) so for once in my life, playing a game and beating it was an event, something special. I couldn’t wait to tell him that night… then he dumped me. Ah, but I still remember the final firefight in the mansion like it was yesterday… I drove around on a bike in the gray t-shirt from the mall hitting as many pedestrians as possible in a huge victory lap around the city.”

    “My first GTA was Vice City for the PC, I didn’t have a PS2 then. I would spend hours cruising just listening to the radio station, I loved Fever. But I knew I was hooked on GTA when I was bummed out for the whole weekend that I had to take out Lance. Then, the first car I jumped in, they are playing “I Just Died In Your Arms” on the radio. It hit me so hard. Almost, almost teared up.”

    “In real life, I was driving down a street that had a cul de sac. It was winter, so the road was snow-covered and slippery. I sped up my car, and did a hand-brake turn at the end, effectively doing a 180. My passenger said “whoa, where did you learn that?” I coolly said “GTA”.”

    Vice City overlaid on a photo of the Avalon Hotel, Miami Beach
    Which brings me to this: Where things really start to take on a new dimension are the tales where video games and reality begin to overlap. Not for the illusion of invincibility or the reckless audacity it may accompany, but for the feeling of magic, of excitement, and the rediscovery of the sense of wonder, exploration, and experimentation that it brings.

    The summer after Grand Theft Auto III came out, I was living in the upstairs apartment of a house in Madison Wisconsin with my friend Rob. We had a slack-off office summer job together and lived one short block from State Street, the buzzing magnet for youth and juvenile shenanigans. The street is closed to traffic, cluttered with skateboarders, bikers, and a mix of student pedestrians from the university at one end and working professionals from the capital square at the other. Strung out in a ring around this area, our map was dotted with pubs to crash, late-night pizza joints to raid, an abundance of odd concrete begging for a freestyle, and endless question marks.

    One of the coolest aspects of the GTA series is how it constantly prods you to explore. To jump out of the car and see where that narrow crack between the buildings leads. If you’re lucky, you’ll find a little spot tucked away from view, a winding walkway ending in a fire escape climb, atop of which sits a “hidden package.” A small white box tied up with twine that is a badge of discovery. A bite-size reward, a tour of duty emblem that adds one more number to your score of how far down into obscurity your voyages have taken you and how boldly you sought out the tiny spots waiting to be stumbled upon.

    We used to take that idea into real life and go “hidden package hunting” on many a late nite bender. Hidden package hunting wasn’t so much about finding something as it was about looking. We’d take the weirdest shortcuts through people’s back yards, slipping through holes in the fences and squeezing between closely parked cars. If you were to chart our path through the city on a map, it would have been a squiggly line with only the loosest adherence to streets, blocks, or sidewalks. There was one night we went up to the top of a multi-story car park and jumped a medium-sized gap to land inside the neighboring, separate car park, working our way back down and walking past the bored attendant who gave us a funny look on the way out.

    As the summer wore on we got more ambitious and mischievous. One night involved the creative repositioning of those blinky, wooden construction markers into a narrow, twisting corridor along some minor sidestreet. Anyone who had to navigate their way through there the next day surely suffered the wrath of our annoying prank. I’m not saying it was considerate, or even a good idea. But I AM saying that it was definitely awesome.

    Another night we found this cool little area recessed below street level, filled with furniture and an expansive shallow pool. Having passed right by it many times we both kind of looked at each other and asked, “how did we not know this was here??” One way or another, some of that furniture ended up sitting inside the shallow pool, tables and chairs neatly arranged for leisurely eating cafe food and chatting. We sat in the pool-chairs and giggled over a brief conversation or two, long enough to enjoy the fruits of our little escapade before slipping away into the night to continue our hidden package hunt. Probably the culmination of these adventures was sneaking into the newly built convention center on the lakefront to see if we could make it to the top of the fountain on the roof. We did.

    We made hand holds with our feet and knees to hoist each other up and after a series of surprisingly easy clamberings, we dipped our toes in the fountain’s water of triumph, surrounded on one side by city lights and the other by lakewater. It was a sublime moment of victory. We OWNED that city. We laughed and gawked at the expansive view, maybe waxed philosophical a bit, and sat down with our legs hanging off the edge of the fountain to savor the moment. It was a glorious instant in time.

    The spell of which was broken by an inquisitive police cruiser pausing far off at the end of the long pedestrian bridge which had led us here. We froze. “Do you think he can see us?” “Nah. It’s pitch black up here.” “But our legs…?” We both looked at each other. Sure it was completely dark up here, but our feet had been hanging off the edge for some time, and the base of the fountain was brightly lit. Shit!

    Shoes and socks hastily went back on, and we made the jumps down onto the hard concrete in a frantic escape dash. There was only one way out: straight toward the police cruiser over the pedestrian bridge. Unless… the doors to a glass-enclosed stairway down to a lower level were unlocked. As luck would have it, they were. Mad laughter ensued and we took the stairs at full speed, crashing through the door at the bottom which opened up to the city street. Clean getaway. Zero stars.

    Primo Vino Art: REDS


    2011 - 02.22

    A populist wine.  A wine for the proletariat!  “A wine for the people” it says on the bottle.  Tried it a few weeks ago and it is, certainly the motherland’s finest.  Drink up, comrades.

    You just blew my mind: Imaginary Colors


    2011 - 02.15

    Move over imaginary numbers, there’s a new impossible-to-visualize concept in town: Imaginary Colors!

    Stick with me here: Cone cells are the photoreceptor cells in your retinas that allow you to see colors. Human beings have three sizes of cone cells, logically named S (small), M (medium), and L (large). Each of these three is best at a particular range of wavelengths of light, and the combinations of how much each particular cone gets ‘stimulated’ by a light wave will determine the color you see. The color yellow, for example, is perceived when the L cones are stimulated slightly more than the M cones and not much activity happens at the S cones. Yellow!

    So all colors are a combination of different cone responses. Here’s where things get wild: there are theoretical combinations of cone responses which cannot be generated by any physical light source! That means there’s colors that your eyes could see, but that no light could make!

    Dude.

    I found out about this when I was working on a Photoshop tutorial and started reading about Lab color. Lab color is an alternate colorspace (ie not RGB like a monitor or CMYK like a printing press) designed to mimic the behavior of the human eye. But there are a lot of colors which are possible to create in Lab color which cannot be reproduced by your RGB monitor. Or by ANYTHING!

    all the white=imaginary colors! So are you salivating yet, over these new colors that you’ve never seen before? Wanna know how to see them? Yes you do! It’s easy. And a little disappointing, because all you can get is a limited, fleeting glimpse. Says Wikipedia:

    “If a saturated green is viewed until the green receptors are fatigued and then a saturated red is viewed, a perception of red more intense than pure spectral red can be experienced. This is due to the fatigue of the green receptors and the resulting lack of their ability to desaturate the perceptual response to the output of the red receptors.”

    I think I remember having that effect at a 5th grade Science fair after staring too long at a giant posterboard colored bright neon lime. As a final note, one last anecdote from Wikipedia:

    “At Walt Disney World, Kodak engineered Epcot’s pavement to be a certain hue of pink so that the grass would look greener through the reverse of this effect.”

    Crazy!!

    Maybe someday when computers have the ability to interface directly with our retinas, we’ll be able to “see” other colors… Maybe like an augmented reality style HUD or something.  Or maybe just the most awesomest music visualizer ever.  Hello, Institute of Shockingly Incredible Research That Sadly Has No Practical Value?  I’d like to sign up for your Imaginary Colors program! ;)