HD Tune Pro V5.75
Irena Kerfien
If you're worried about doing something wrong during the connection process, know that the RX-V575 is pretty foolproof. It includes Yamaha Parametric Room Acoustic Optimizer, also known as YPAO. This perk does all of the speaker level and delay tweaks so you won't have to. Just set up the included microphone in your favorite listening position and follow the on-screen menu. Some people still appreciate being able to fine-tune a setup, which you can if you like, but the entire YPAO setup process takes minutes, with pretty satisfying results.
Once the receiver is hooked up, AirPlay streaming is insanely easy. My iPhone instantly recognized the RX-V575 as an AirPlay zone, as did my Windows laptop. From there, streaming isn't just easy, but it also sounds really nice. Yamaha has this little perk called Compressed Music Enhancer, which promises to pump up the sound of digital music to near-CD quality. Admittedly, some tunes sounded better than others did. For instance, old Grandmaster Flash didn't pack the same punch as something recent from Mackelmore. However, I'd have to blame the source material for that. Overall, I was extremely pleased -- and pretty giddy about this newfound way for blasting out my digital music. If you're not convinced by this Yamaha goodness, trying using the remote to shut off the Compressed Music Enhancer feature and I think you'll see (or at least hear) what a difference it's making.
AM/FM Tuner: The Yamaha RX-V575 AV receiver features a built-in AM/FM tuner with manual, seek, and preset tuning. The RX-V575 lets you store up to 40 AM/FM station presets. This can be done manually or automatically (auto-preset tuning). You can set this receiver to automatically match FM broadcast frequencies in stereo, or convert the frequency to monaural for weaker stations. An indoor FM wire antenna and AM loop antenna are included with the receiver.
AV Controller App: This AV Controller App (free) will turn your iPod touch, iPhone, iPad or Android device into a Wi-Fi enabled remote control for the Yamaha AV receiver. This App provides the flexibility to control input, volume, mute and power commands. You can browse content from all internally available sources such as Internet Radio, USB and AM/FM tuners. You can also control all AV receiver zones such as powering on and changing input for each zone. This App not only controls the Yamaha AV receiver, it also controls Yamaha Blu-ray Disc Players, supporting various functions including Play, Stop and Forward. In addition, you can browse music stored on your Apple iOS or Android device and wirelessly transfer the content to the Yamaha A/V receiver for playback.
To reduce the impact of backup tasks on the cluster, TiDB v5.4.0 introduces the auto-tune feature, which is enabled by default. When the cluster resource utilization is high, BR automatically limits the resources used by backup tasks and thereby reduces their impact on the cluster. The auto-tune feature is enabled by default.
If you want to reduce the impact of backup tasks on the cluster, you can enable the auto-tune feature. With this feature enabled, TiDB performs backup tasks as fast as possible without excessively affecting the cluster.
TiKV supports dynamically configuring the auto-tune feature. You can enable or disable the feature without restarting your cluster. To dynamically enable or disable the auto-tune feature, run the following command:
Auto-tune is a coarse-grained solution for limiting backup speed. It reduces the need for manual tuning. However, because of the lack of fine-grained control, auto-tune might not be able to completely remove the impact of backup on the cluster.
Issue 1: For write-heavy clusters, auto-tune might put the workload and backup tasks into a "positive feedback loop": the backup tasks take up too many resources, which causes the cluster to use fewer resources; at this point, auto-tune might mistakenly assume that the cluster is not under heavy workload and thus allowing backup to run faster. In such cases, auto-tune is ineffective.
Issue 3: For scenarios with high traffic jitter, because auto-tune adjusts the speed limit on a fixed interval (1 minute by default), it might not be able to handle high traffic jitter. For details, see auto-tune-refresh-interval.
When American Bill Johnson won the Olympic downhill years ago, his skis were tuned with a 4-5 base edge bevel and a slightly reduced side edge bevel...this provided the fastest possible speed for Johnson on a relatively flat, soft downhill course. By contrast, Tommy Moe won his Olympic downhill gold with only 1 of bottom edge bevel. This was dictated by the steep, icy conditions on the course in Norway.
One option is to use bevel "devices" or tuning tools. These tools usually feature a plastic body fitted which will accept specially sized files or diamond stones. The bevel angles are usually widely adjustable and they will usually tune both the side and base edges, either simultaneously or by repositioning the insert. The advantage of these tools is convenience, adjustability, ease of use, and they provide pretty precise results in the hands of a less-than-attentive or skilled mechanic. Their disadvantages include more frequent file replacement (since file inserts are small and tend to wear faster) and, some might argue, less "feel" for the cutting action of the files. We usually recommend these tools for beginners, folks born without meteoric learning skills, or those less mechanically-gifted. They are also great for tuners looking for an effective, minimal kit without a lot of fuss.
When filing the side edges of a ski or board always keep the base pointed away from you when mounted in the vise. This means you will file tip to tail on one edge and tail to tip on the other. This is OK! The same is true when tuning the base edges...you will flip the position of the ski to allow you to tune with your predominate hand.
PLASMA EDGES
Fisher has produced some skis with "Plasma" edges. These are regular steel edges that, after the skis have been made, are zapped along the lip by a laser for a split second. The intense heat created work-hardens the outer surface of the steel from a normal rating (Rockwell 40) to a very hard (Rockwell 62) rating. This hardening is done to reduce edge wear for recreational skiers who, generally speaking, are less attentive to tuning needs than serious skiers or racers. To tune these babies, you'll first need to remove this hardened surface with a diamond stone before filing or beveling with regular files or edge tuners.
GOOD SHOP TUNES
If you take your gear to a shop for tuning, check out the quality of their work by asking to see other examples of their work...like on a recently-tuned demo ski or snowboard. Check the edges with your fingernails to see how well it's been filed, deburred and polished; ask how much the base and side edges were beveled (and why); check the base with a true bar to see if it' s been stoneground flat, and if the structure is clean and crisp (with no p-tex hairs visible). The shop tech should also ask you questions... such as where and how well you ski or ride to determine the best tune, and also inspect your ski or board to diagnose and suggest appropriate repairs. If you don't like what you see or hear, go to another shop...or, better yet, do your own work at home and get the tune you deserve.
REAL RUSTY EDGES
I tune skis and snowboards for friends, but live near the ocean where the salty air makes for some edges that accumulates a lot of rust!
To remove heavy rust before filing edges, I carefully use a small Dremel tool with a small rotary sander on it (used mostly by modelers and wood sculptors). I attached a rolling guide to it and lightly spray the edges with base cleaner to reduce friction and keep down the rust dust. I keep the tool moving and work down the full length of the edge in one direction. Although the sander leaves a certain sharpness to the edge, it should always be followed by filing, beveling, deburring and polishing in the normal fashion.
Charles F., Wrightsville Beach, NC
BACKSIDE BEVELING?
Beveling the backside base edge of a snowboard more than the frontside base edge is important because initiating a backside turn is harder...neither the knees or ankles flex in that direction. Asymmetric boards are designed to accommodate that..the backside edge has a shorter tip and longer tail because boarders find backside turns easier to finish than frontside turns. Likewise, top snowboard tuners are sharpening the tip of the frontside edge more than the backside tip, and sharpening the tail of the backside edge more than the tail of the frontside.
Getting good edge grip on ice or hardpack is a tough task for most skiers, but technology inspired by the concave design of ice skate blades enabled Ed Dittmar of ICE (Ice Control Edge Company) to create the microgroove...a tiny groove machined into the steel edge of a ski under the feet. In effect, it reduces the surface area that contacts the ice, and thus increases edge penetration. Although the main beneficiaries of ICE edges will probably be weekend skiers who tune less frequently and exert less torque, racers such as Marc Giradelli have also been using it since 1989.
Tester claim skis are 2.2% faster on an icy course with the microgroove...that's 1.32 seconds on a 60 second course. It costs about $40 per pair to have the microgroove machined into your edges at a ski shop, but it can (and should) be deburred and polished periodically by hand with the ICE Polishing Tool.
When testing we found the ICE microgroove worked well on icy slopes, although it took a while to find the optimal angle of skis on edge when turning...it held like a dam until the skis were cranked too far on edge, at which point the extra gripping advantage was lost.
CERAMIC BASE TUNING
Some Atomic alpine race skis feature narrow strips of ceramic base material inlaid along the steel edges. This is done to help avoid base burn, since ceramic is harder and more durable than p-tex.
You can tune, patch and wax these areas just as you do the rest of your base without a problem.