SIGMA Optimization Pro is the dedicated software that enables you to connect lenses from new product lines to your computer via SIGMA USB Dock, and to customize the lens with operations such as firmware update and focus adjustment. On this page, you can download the installer program “SIGMA Optimization Pro 1.6.0 Windows version” as well as “SIGMA Optimization Pro 1.6.0 Macintosh version”. Please make sure you read information about the product before starting the download.
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Users who purchased SIGMA USB DOCK UD-01 / UD-11 / SIGMA FLASH USB DOCK FD-11 / SIGMA MOUNT CONVERTER MC-11, and who use SIGMA interchangeable lenses from the three product lines (Contemporary, Art, Sports) / CINE LENS / ELECTRONIC FLASH EF-630 / SIGMA TELE CONVERTER TC-1411 / TC-2011 / SIGMA MOUNT CONVERTER MC-21.
- It brings compatibility with the SIGMA USB DOCK UD-11 for L-Mount and Canon EF-M mount※1
- It brings compatibility with SIGMA TELE CONVERTER TC-1411 / TC-2011※2
- It brings compatibility with SIGMA MOUNT CONVERTER MC-21※2
- It introduces focus ring adjustment functionality. ※1※3
- It has added the “AF function button setting”* to the customization menu. With this setting, it is possible to allocate various functions to the AF function button incorporated in the SIGMA 70-200mm F2.8 DG OS HSM | Sports.
- Before you start the download of the installer program, make sure all applications in your computer are finished.
- Click the download button, or push the right button of your mouse (“right click”) and start download.
- Make sure SOP_1.6.0_setup.exe is saved in the destination you specified.
- If you have “SIGMA Optimization Pro” installed on your computer, uninstall it by using “Add or Remove Programs” on a computer. It is not possible to install “SIGMA Optimization Pro” properly if “SIGMA Optimization Pro” is already installed.
- First, you have to choose the language of the program you install. Select the language and push the OK button. Then, carry out the install according to the procedures displayed in the screen.
- Core2Duo or faster processor
- Windows 8.1, Windows 10
- 1GB of RAM
- 1GB of available hard disk space
- 24bit or more graphics card
- 1024 x 768 or higher screen resolution
- PC with USB 1.1 port
This download is not compatible with your current device. Please use the link below to access this download via another device.
Send download link Download SOP_1.6.0_setup.exe (27.8 MB) SIGMA USB DOCK / SIGMA Optimization Pro TUTORIAL- It brings compatibility with the SIGMA USB DOCK UD-11 for L-Mount and Canon EF-M mount※1
- It brings compatibility with SIGMA TELE CONVERTER TC-1411 / TC-2011※2
- It brings compatibility with SIGMA MOUNT CONVERTER MC-21※2
- It introduces focus ring adjustment functionality. ※1※3
- Apple’s Notarization Service support※
- It has added the “AF function button setting”* to the customization menu. With this setting, it is possible to allocate various functions to the AF function button incorporated in the SIGMA 70-200mm F2.8 DG OS HSM | Sports.
- It has become compatible with MacOS Mojave (10.14).
- It has corrected the display error of the customization menu in traditional Chinese language.
- Before starting the download of the installer program, make sure all applications in your computer are closed.
- Click the download button, or push the mouse button whilst holding down the Control key on your keyboard (Control+ Click).
- Select “download linked file” from the displayed menu. Start the download of the file.
- After completing the download of “SIGMA_Optimization_Pro160.dmg” file, it will be mounted automatically and “SIGMA Optimization Pro” disk image will be displayed. If the file is not mounted automatically, please double click the “SIGMA_Optimization_Pro160.dmg” file. “SIGMA Optimization Pro” disk image will then be displayed.
- To start the installation drag and copy SIGMA Optimization Pro folder from “SIGMA Optimization Pro” Disk Image to applications folder. Installation will be complete after being copied to this folder.
- Select and open the Applications folder from “Go” in the Finder menu.
- If SIGMA Optimization Pro already has been installed on your computer, please delete the “SIGMA Optimization Pro” folder in the “Application” folder before installing.
- MacOS10.13, 10.14, 10.15 and Intel Core Processor
- 1GB of RAM
- 1GB of available hard disk space
- 24bit or more graphics card
- 1024 x 768 or higher screen resolution
- PC with USB 1.1 port
Sigma Designs Distribution
This download is not compatible with your current device. Please use the link below to access this download via another device.
Send download link Download SIGMA_Optimization_Pro160.dmg (24.7 MB) SIGMA USB DOCK / SIGMA Optimization Pro TUTORIALAugust 2009
World Premiere
Tekton Design OB45 Hybrid 4.5 Loudspeaker
Giving full range drivers the design attention they deserve.
Review By Rick Becker
Click here to e-mail reviewer
Single driver loudspeakers havecaught my attention from time to time over the past decade, primarily at the
At the CES show in 2009 two things, among many, happened.First, a number of open baffle loudspeakers, most often large and veryexpensive, grabbed my attention. They were also very good sounding loudspeakers— much more so than an encounter I had with this breed at a
Months later, at the Salon Son-Image at Montreal, Iencountered some very impressive small stand-mounted single driver loudspeakersimported from Asia under the name John Blue, driven by some very modestly pricedTri-Path amplifiers. Given the state of the economy, these began to make a lotof sense to me. I later learned that there is a whole cult of people who relishthis small, affordable high end gear — and has been for years. Forgive me forbeing late to the party.
First Encounter
Itwas late on Sunday at
While I originally wanted to review the $1200 Montreal samplewith its thicker than standard painted baffle, when I learned the standard satinblack model cost only $550, I said “Let’s start there.” It seems Eric is amaster craftsman and can produce very high levels of paint and wood veneer onhis products. But why not start at the entry level for this model and open theeyes and ears of young people thinking of getting started in this hobby? Infact, Tekton starts with single driver models at $200 per pair with atraditional enclosure, as well as much more expensive floor standers. But lestyou think you will be getting down and dirty in this price range, the reviewsamples arrived expertly packaged in an absolutely flawless satin black finish.This guy is a real pro.
The Roots
Duringthe course of the review Eric completed his 500th pair of Tektonloudspeakers, mostly in the past two and a half years, though the company wasfounded about four and a half years ago. For a micro-company that essentiallyoffers a custom hand made product, that is a lot of speakers. Before that, Ericworked for a number of much larger companies and has had his hands on the designand/or manufacture of about 50 different models that have been produced in farlarger quantities. One such company, Sound Tube Entertainment, I had never heardmentioned before. They make speakers for industries such as the fast food chainsand we listen to music through their speakers as we supersize ourselves. Thismay not seem like a stellar credential for high-end audio, but work such as thisexposed Eric to large scale production in
Marketing seems to be the biggest challenge for Tekton Design.They are direct sellers so CES, where manufacturers market their products toretailers, is not really an appropriate show for them. The 2009 show was theirfirst experience at
In the Video Rig
Listening began with the OB4.5 speakers up on concreteblocks topped with a cotton wash cloth to protect the finish. Using them in thevideo rig allowed the most rapid break-in and right from the get-go it wasevident these were good loudspeakers. It took a bit of getting used to themissing deep bass, but I reveled in the smooth presentation and high degree ofmidrange focus that surpassed my Coincident Partial Eclipse II loudspeakerswhich now cost more than eight times as much as the Tekton OB4.5. The adventurehad begun and I soon discovered the pleasure of late night listening at lowvolume while my wife slept peacefully. Even at low volume, the midrange claritywas sustained and drew me into the music. Had I been listening to my Kharmaloudspeakers in the big rig at this volume, I likely would have shut it down,answering the question “Why bother?” At low volume, the highs trickle offand the bass fades — a consequence of how our ear/brain has evolved from thegood old “hunting and gathering” days, but the listening experiencecontinues to invite. If you live in an apartment or have small children youdon’t wish to awaken, this is a valuable asset.
The OB4.5 is an efficient loudspeaker being a dipole on topand a ported design on the upward firing driver. The two Fostex FE 127 driversare wired in parallel. Sensitivity is rated at 92dB/W/m. Impedance is rated at 4Ohms and it is claimed to handle 90 watts. The integrated amplifier in my videorig is a vintage Tandberg 3012A rated at 100 wpc into 8 Ohms, much of thatbiased in Class A. Obviously, I didn’t try and test the limits with this kindof power on tap. The Fostex drivers sounded very good, but with paper cones anda stamped steel cage, they were not the most robust drivers I’ve seen, norshould that be expected at this price range. (A single driver retails for lessthan $50 on the web). With the baffle placed two feet in front of the wallbehind them, a reasonable soundstage appeared in spite of the TV and the cabinetplaced between them. A second cabinet supporting the electronics sat just off tothe left. It was not a pinpoint soundstage, but sufficient for video basedlistening.
In The Big Rig
Pushing the Kharma aside and replacing them with theTekton loudspeakers seemed almost ludicrous — the Tekton being a few percentof the total cost of the system. Placed out into the room where my Kharmanormally reside, creating a roughly 60-degree triangle with the listening chair,a full pinpoint soundstage developed. Within the frequency limitations of theFostex driver, the focus was superior to the Kharmas. Likewise, the transparencyof the Tekton easily surpassed the Kharma. And again, within the limitations ofthe Fostex drivers, seamlessness matched the Kharma from the midrange on up.
Tonal balance, however, was a different experience. Thefrequency response of the Tekton is said to be 45 Hz to 20 kHz (no limitationsgiven). Now, 20 kHz is way above what my aging ears can cognitively perceive,yet I often sense an openness or airiness of loudspeakers equipped withsuper-tweeters that play far above these limits. That said, the Tekton seemed tohave an upward tilt to the treble upon initial listening. But was it really so?Curiosity led me to pull out my analog Radio Shack SPL meter to check it out.Overall, the frequency response measured at the listeningposition was very smooth, although there was a slight drop in themidrange at 300 to 400 Hz, followed by a smooth, but elevated upper midrangethrough the mid-treble. I would guess it is this slight elevation coupled withthe outstanding transparency that gave me the impression of a small upward tiltin the treble. For those less familiar with response curves measured inroom at the seating position (rather than on-axis in an anechoicchamber), this is a very good reading for this type of instrumentation. At theupper and lower extremes, the Radio Shack SPL meter is known to be inaccurate,so take them with a grain of salt. The black line shown here is with thespeakers aimed straight ahead. Later I toe’d them in which gave the red linereadings, as explained further below.
And the bass? Right below the midrange the upper bass took a10 dB leap that peaked at 91.5 Hz and then rolled off practically in a straightline all the way to about 55 dB at 20 Hz. The hump no doubt contributed to thesatisfying perception of bass in the upper bass region, and the smoothness ofthe roll-off ameliorated the fact that the useful bass extended only into themid-bass region. Usually this type of hump is attributed to room resonanceinterference. For a loudspeaker of this size and cost, this is far from shabby.More important than the actual frequency response in the bass region is the qualityof the bass which was not only tuneful, but almost as well focused as themidrange and treble. While the peak at 91.5 might suggest a one-note bass, thiswas not the case. While it surrendered volume as the frequency declined, it didnot surrender quality. It was musical throughout its useful range down to about50 Hz.
All of this says the OB4.5 fairly begs for a subwoofer andthis fact has not escaped Eric Alexander who has developed a unique patentpending design that will hopefully be headed my way in the very near future.Likewise, at the upper extreme, Eric offers an exclusive 1-inch soft dome add-ontweeter ($50/pair) to fortify the upper treble for those with good hearing inthat range.
Can’t Get No Satisfaction?
If you love to listen at head-banging, ear shatteringlevels, this is not the loudspeaker for your aural suicide. Nor is it wimpy. Iexperienced great satisfaction in my large, 6000 cu. ft. listening room (thatopens up into another large family room) at levels peaking from 87 to 92 dB asmeasured from the listening chair. Listening levels depended a lot on thedynamic nature of the music being played, however. A modest overall level mightcontain a drum whack that would bottom out the driver. Music that was a lotfuller and more demanding might not fly at that level, but music of all genreswas certainly very engaging and satisfying at reasonable listening levels. Whenover driven, you get clicks and pops that send you scrambling for the pausebutton to give you a chance to adjust the volume. A rig with a remote controlledvolume would have come in handy to adjust for different recording levels andexceptionally dynamic passages. Once you learn to respect the limitations ofplayback level of the loudspeaker you open the door to appreciating itsqualities. The outstanding focus and transparency delivered music at a level Ihave heard with precious few other loudspeakers — most of which are priced forthe very rich. Placed in a smaller room, it may very well play louder, though Iexpect that like most loudspeakers, it needs to be well out from the wall tomaximize its soundstage capability. Likewise, side and ceiling reflections in asmall room may not allow you to achieve quite the level of focus I experienced.With the wide dispersion of this dipole design, I expect it will play best whenplaced along the long wall of a room. Moving it back closer to the front wallwill give you more bass at the expense of soundstage depth. Plan accordingly. Beprepared to play with positioning a bit, but it is not difficult to get goodmusic from this loudspeaker.
It responds to changes in position with rather obviousresults. Likewise, changes in gear up stream are easily revealed.
Dumbing It Down
The above comments were written based upon listening in mymain room with a high level rig. But how likely is it that a person with such arig would buy a $550 loudspeaker? For comparison, I dumbed my rig down with avintage Musical Design SP-1 preamplifier and Manley Mahi monoblocks. Both pieceshave been treated with AVM which improved their focus, but no vibrationabsorbing devices were used under the preamp. I retained my JPS Labs power cordsand speaker cables, and Kharma commercial grade interconnects as well as myanalog and digital front ends.
Predictably, the quality took a step down. There was only aslight loss of transparency, but the overall focus took a moderate step down inquality. The bass, in particular, suffered from the smaller transformers in theMahi monoblocks. Bass was more bloated and had noticeably less control, henceless focus than the TubeMagic monoblocks. Much of this was undoubtedly due tothe more diffuse signal coming from the Musical Design preamp. Was it horrible?No, but anyone reading my laudatory comments above might question my judgment ifthey heard these loudspeakers with lesser electronics.
I also began thinking about a minor dissatisfaction with thetreble region at this time. In checking out the frequency response chart for theFE 127 on the Madisound.com website, I noted a rather significant drop-off intreble response at 30 degrees off axis, which is about where I had the speakerspositioned. With conventional dynamic loudspeakers with separate tweeters Iinvariably aim them straight ahead for smooth treble response, so that is what Idid with the Tekton. After experimenting with toe-in I settled with them aimedat each shoulder. The treble smoothed out beautifully, albeit at the cost of asmall loss of soundstage depth, most notable at the outer corners. Right downthe middle the soundscape remained deep and clear. The frequency trace on thegraph showing the results in the toed-in position (red line) doesn’t conveythe improvement in smoothness and focus in the treble. It was sounding very,very good at this point, so I decided to up the ante and putTuneBlocks under the Musical Design preamp. The resulting improvement broughtthe “dumbed-down” rig embarrassingly close to the results with the CATpreamp and TubeMagic monoblocks. We’re talking serious High End quality, here.Although this music was extremely well focused, among the best I’ve heard, itwas easy to listen for long periods. The outstanding detail of the music andtransparency of the soundscape were very inviting and often tricked me intobelieving I was at the venue of the recording, particularly with female vocalsand music with fewer instruments that had less bass content.
Aesthetics
The pair I sawat Montreal, with their bright blue baffle attracted me as a modern design suggestingMondrian’s paintings. The larger front baffle eclipses the box behind it fromstraight on, but from any other angle the box of this hybrid design is visible.The combination of the two elements — box and baffle — is anything buttraditional. My friend Tom, whose wife has their home decorated in constantanticipation of photographers from Traditional Home magazine, thinks they’reugly. I, on the other hand, see them as a blank slate waiting to be handdecorated by artistic young mothers with small children or plastered withstickers from indie bands and musical instrument companies by young dudes whohave somehow “got it” that sound quality matters. I can envision thespeakers sitting just as they are in my music room — atop cinder blocks,perhaps spray painted satin black to match the speakers, with maybe a red tintedpatio paver or two to bring the driver up to ear level. Tekton offers customdesigned, sand fill-able speaker stands for $200 as seen in the photo of theblue OB4.5. Certainly, the OB4.5 deserves a solid foundation to achieve itshighest potential, and I have to admit I’ve been using Sound Dead SteelIsofeet beneath the box to absorb the faintest trace of cabinet vibration. Formore sophisticated contemporary settings consider a colorfully hand paintedbaffle like the one shown here on a Tetra 105 loudspeaker or an elegantlyveneered one like this bubinga pair from the factory.
You might even squeak into a traditional setting with a gicleeof a French impressionist painting, though you might have to find an outsidecraftsman to pull off that feat. Even at $1200 with the thicker, color accentedbaffle, the OB4.5 is an incredible value if you have quality electronics andhome décor that require a more upscale look.
Hybrid Design
So, what’s going on here? Why the two drivers? And whyis the one in the box facing upward? As best I understand the explanation, Ericbegins with a single full range driver that is positioned in the classic openbaffle configuration. He then uses a second identical driver mounted in a portedenclosure firing upward, right behind the open baffle driver. With the driverswired in parallel and in phase, this creates an acoustical short circuit pathwhich nullifies the bass energy radiating from the rear side of the open baffledriver. He wrote:
“We must remember that the power radiating from both the front and rear of an open baffle dipole system is equal and opposite in nature. So… if we nullify (i.e. short-circuit) the low frequency power being radiated from the rear side of the open baffle, we now have an open baffle radiator that is totally compact, and effective in presentation. And because we're dealing with longer wavelengths here, the low frequency power disperses evenly throughout the entire room [from the front of the baffle].”
Regarding the vent located on the open baffle: “It might seem a bit counter intuitive to vent a system like this. And I do produce models that have no vent; however, the full-range transducer I’ve chosen to use here is really quite conducive to the classic vented alignment, so we’ve gone with the vent to further augment the performance of the overall system.”
“My primary design objective here was to offer a compact open baffle system (with high wife acceptance factor) that is 100% compatible with a pure analog system! I felt that a giant baffle, complex manifolds and labyrinths, equalization, and DSP processing must be avoided at all cost. I've also taken the creative license to integrate the full-range potential of the upward firing driver into the potential of the overall presentation. In my opinion, the result is best described [as a] hybrid that is closest in relation to an omni-directional polar type loudspeaker.'
Eric told me the upward firing driver is padded down about 10dB in the mid and high frequencies and acts much like a rear-firing drivertypically found in Von Schweikert and Vandersteen loudspeakers to create adeeper soundstage and more three dimensional sound. Simple and elegant. And thatis what I heard. It does not achieve the true omni-directional effect I’veheard from much more expensive loudspeakers costing well into five figures, suchas various mbl models, among a few others. A centrally positioned musician orsinger will follow you as you move left or right and then be positioned at theloudspeaker as you move even further off stage. But in comparison with theexceptional soundstaging, which is slightly recessed due to the volumelimitations, this lack of true omni-directional effect is trivial. From thelistening chair, the three dimensional soundstaging is about as good as it getsfrom even the best known manufacturers.
Shortcomings
So what are the shortcomings? The Fostex 127E is ashielded driver with a banana fiber paper cone sourced from the Far East. It is pretty amazing by itself, and even more amazing in this hybridapplication, but there are better full range drivers out there. Lowther and AERcome to mind, but these would totally destroy the price and size of this designconcept. A larger driver should produce a more satisfying bass, but this mightalso compromise the excellent imaging of the smaller driver. A larger, higherquality driver might also be able to deliver more dynamics and handle morepower, hence play louder overall. The absence of deep bass limits the excellentmidrange and treble by stripping the music of the subtle room tone cues that,when present in the recording, give us the sense of “being there”. These arenot criticisms of the OB4.5, merely shortcomings of what you can expect for $550or even more money if it were not available factory direct. The shortcomingscould be seen as opportunity for future development of larger, more expensivevariations of this design. They also keep me lusting for an opportunity to hearthe $650 Tekton subwoofer. Stay tuned to this station.
At a more detailed level, the standard binding posts were toothick to accept my JPS Labs speaker cables, so I was forced to insert one pronginto the hole of the post and tighten it down in that position. Eric explainedthat his products are custom made and that he stocks both Cardas and WBT bindingposts for those who need a thinner post. Likewise, he offers different internalwiring for those who prefer something better than the standard 18 gauge stranded copper he uses. I also had concern for mounting the binding postson top of the enclosure. This raises the speaker cables into a position ofgreater visibility and vulnerability. It also puts them closer to eye level forsmall children with big curiosity. The danger of heavy, stiff cables pulling ona relatively light loudspeaker is also greater with cables protruding straightoff the back, rather than draping straight down toward the floor. As a fatherwith young children, Eric said he would give these views some consideration forfuture development.
Hearts Of Space
It is no secret that I love to listen to Heartsof Space on National Public Radio on Sunday nights. Tonight Ilistened to program #844. I started listening when they were in the 400’s.That’s like eight years ago. Virtually everything I review gets evaluatedduring this show on at least one Sunday night. Earlier in the evening I swappedout the Plinius solid state amplifier for the tube powered Mahis just for thisshow. Often times I multi-task with audio magazines while I listen. With theOB4.5 now toe’d in, the “slow music for fast times” was much better thanprevious weeks. I put the magazine down and turned out the light to listen inthe dark as I often do. The listening experience took me to a level I’vereached only with the Gemme Audio Green Gem loudspeakers, a $37,000 model. TheOB4.5 lacks the frequency extremes and the ultimate refinement of the Green Gem,but the heart of the music was right up there in that league.
New Age music is often computer generated and sometimes lacksthe timbral cues of conventional instruments hence I listen with no expectationsof what a note should sound like.Deep bass is not a prerequisite for this genre, either. The music often just happenswith the predictability of a kaleidoscope imparting a feeling of floating inspace. Listening in the dark, the excellent focus afforded by the OB4.5permitted the attack and decay of notes to suggest space as deep as our solarsystem. Had I been using my better amplifiers and had my power conditioner beenin the rig I would have experienced an even better signal to noise ratio whichwould have imparted a more galactic experience. The OB4.5 completely disappearedand there was seemingly no correlation between the modest drivers in thatloudspeaker and the expansive music I was hearing.
The Larger Soundscape
One of my friends, with deep roots in the history ofaudio, wrote to me about single driver full range loudspeakers:
In my listening arsenal I have several full range drivers fromthe last 60 years including a pair of Fostex, albeit a rarer type.
As all crossovers degrade time coherence, a top class fullrange system with one full range driver is a crucial reference for hearing. Inmany aspects the best of breed ones can not be equaled or eclipsed in theirhomogenous portrayal of music.
Advancing full range driver design is the biggest challenge inspeaker design as it demands profound knowledge of the sonic signatures ofmaterials and other less travelled avenues of insight.
In the 1960s we had the famous 'Exact' full rangedrivers from
Maybe some day full range drivers will get the designattention they deserve and we may get the ultimate speaker technology withthem....
The Tekton OB4.5 certainly seems to be a step in thatdirection.
Wrap it up? For Now...
The OB4.5 gives you an incredibly transparent and focusedview into the recording venue that opens the door to the upper level of High Endaudio at an entry level price. Its shortcomings insure that you will not likelybreak your lease or your marriage. With even modest gear and attention to detailand set up, it should help flood our ranks with new believers and elevate jadedold timers to the status of Born Again Audiophiles.
My wise friend who builds veryexpensive audio gear on another continent warned me:
Be careful not to fall in love with the full-range idea for yourself. The
best of them are so good that they may move upwards thetolerance
threshold of future reviews of conventionalproducts...or even spoil it.
That,folks, is pretty much what happened here.
Sigma Designs Driver Training
Specifications
Type: Full-range single-driver hybrid loudspeaker
Frequency Response: 45 Hz to 20 kHz
Drivers: Two 4.5-inch Fostex 127E
True full-range-no crossover
Sensitivity: 92dB/W/m
Impedance: 4 Ohms
Weight: 21 lbs
Dimensions: 22 x 13.25 x 12 (HxWxD in inches)
Custom finishes available
Price: $550, optional grills adds $45/pair
Tweeter addition adds $50/pair
Company Information
Tekton Design LLC
272 South Ridgecrest Drive
Orem, Utah 84058
Sigma Designs Driver Download
Voice: (801) 836-0764
Email: tekton_design@yahoo.com
Website: www.tektondesign.com