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A Closer Look At Car Audio Crossovers

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Car audio crossovers are a class of electronic filters designed for use in audio applications such as hi-fi. A dynamic loudspeaker driver that is commonly used is incapable of covering the entire audio spectrum all by itself.

Crossovers split the audio signal into separate frequency bands which can be handled by individual loudspeaker drivers optimized for those frequency bands. Let’s take a closer look at Kenwood’s KE-600 Crossover, KPX-F801 Crossover and Kenwood KPX-L101 Crossover.

Kenwood KE-600 Crossover

Kenwood KE-600, one of the most advanced signal processors, is a 6-Way electronic crossover with built-in parametric equalizer and a DC to DC power supply for high voltage outputs and low noise.

It has input selection, phase switching, variable level controls and the following outputs: subwoofer, low-pass, low-cut, high-cut and high-pass. It is a great component for multi-amp installations and is available for around $370.

Features

● DC to DC converter.

● High-frequency output.

● Input selector.

● Different phase switches.

● Subwoofer output from 30Hz to 800Hz (low-pass).

● 6-way multi-amp configuration.

● Variable level controls.

Kenwood KPX-F801 Crossover

Kenwood KPX-F801 Crossover is a 3-way passive crossover network. It is available for around $75.

Features

● Guard circuit that protects against excessive tweeter inputs.

● Special capacitors and inductors for audio purpose.

● Phase inverter switch for midrange and tweeter.

Kenwood KPX-L101 Crossover

Kenwood KPX-L101 Crossover is a low-pass passive crossover network. It is available for $50.

Features

● Special capacitor and inductor for audio purpose.

● 80Hz crossover.

Remember, an audio crossover splits the incoming audio signal into separate bands that do not overlap at all, and which, when added together, gives the signal unchanged in both frequency and phase response.

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Source by Chimezirim Chinecherem Odimba

/ By edd / spiral-freezers/ / 0 Comments

Home Remodeling – Top 5 Energy Saving Projects for Remodeling Your Home

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Millions of American homeowners plan to remodel instead of move. If you plan to remodel your home, here are some of the most effective projects when it comes to recapturing more of your hard-earned dollars by lowering your home’s energy usage.

1. Insulation

The first one, though it won’t show on the outside, is adding a layer of insulation to your attic. To decide if your home could use an upgrade, check to see how much you already have. If it’s less than twelve inches, adding another layer will lessen your energy bills significantly.

2. Windows

Replacing wood windows with energy-efficient vinyl windows can also offer a relatively quick payback in energy costs. If the cost of replacing all your windows at once is beyond your budget, start by replacing south and west-facing windows first, to save on summer cooling costs. Then replace your east and north-facing windows to reduce heating expenses.

3. Furnace Filters

A very inexpensive upgrade is simply to change your furnace filter regularly. It can improve your cooling system’s efficiency by as much as ten percent when combined with making sure your registers are clear, as well. You can save even more, while helping the environment by not having to recycle your old filter, by buying a washable filter for about $20, which can last for as long as five years if properly cared for.

4. Lighting

Changing incandescent lighting to fluorescent can also provide a strong return on investment. For instance, replacing just one quarter of your incandescent bulbs to compact fluorescents can reduce your home’s electricity usage by 50 percent. As energy costs continue to rise, this is a great way to fight back.

5. Appliances

Finally, many of today’s new appliances can save large amounts of energy when compared to their ancestors. They’re also an excellent way to give your kitchen a dramatic new look while you’re saving money on energy costs.

Energy costs are going to continue rising. Of that, there is no doubt. However, there are many projects that you can do yourself that will provide significant energy savings around your home, all of which will eventually pay for themselves by reducing the amount of energy your home uses.

As energy costs continue to soar, it will be well worth your while to look around your home, take stock, and see if any of these relatively easy and inexpensive projects will be right for you. You’ll be pleased with the difference, and with the money you’ll save.

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Source by Jeanette Joy Fisher

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Three Types of HVAC Condensers

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A condenser is a device that is used to liquefy gas by cooling it. In HVAC equipment, hot discharge gas (refrigerant vapor) from the compressor enters the condenser coils at the top and is condensed, drains out of the condenser to a receiver located near the bottom. The condenser coil is located along with the compressor and controlling devices in the condensing unit. In a remote or split system air conditioning installation, the condensing unit is located outdoors. Condensers are available in a variety of sizes and designs that include plain tube, finned tube and plate type, series-pass and parallel pass units.

Condensers are classified by their cooling method. The three main types are broken down to:

  1. Air-cooled condensers
  2. Combined air and water-cooled condensers
  3. Water-cooled condensers

Air-Cooled Condensers

An air-cooled condenser consists of a coil of ample surface that air is blown by a fan or induced by natural draft. This type of condenser is universally used in small capacity refrigerating units. Mostly designed for residential or small office air conditioners.

Air-chilled condensers should be kept from free from dirt, lint and other foreign materials because they tend to reduce the airflow around the tubes and fins if they are allowed to accumulate just like evaporators.

Combined Air- and Water-cooled Condensers

This type of condenser is also know as an evaporative condenser and consists of a coil cooled by water sprayed from above and then cold air enters from the bottom and is blown across the coils. As water evaporates from the coil it creates a cooling effect that condenses the refrigerant within the coil. The refrigerant gas in the coil is hot which changed to the liquid state by combining the sprayed water and the large column of moving air supplied by the fan. The water that does not evaporate is recirculated by means of a pump.

Water-Cooled Condensers

A water-cooled condenser is similar to a steam surface condenser in that cooling is accomplished by water alone that circulates through tubes or coils enclosed in a shell. IN a water-cooled condenser the refrigerant circulates through the annular space between the tubes or coils. Because of its construction, a water-cooled condenser is also referred to as a double-pipe condenser.

Because an evaporative condenser is not wasteful of water, large compressor installations are possible in areas where water is scarce. Tests have shown that the amount of water required will not exceed the.03 gpm per ton of refrigeration. This is one of the eco-friendly reasons to use this type of condenser. Evaporative condensers also eliminate water water disposal problems and provide the most economical means of cooling refrigerant gases of standard air conditioners.

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Source by John Stackson

/ By edd / spiral-freezers/ / 0 Comments

The Benefits of a Wireless Commercial HVAC System

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Whether you plan to remodel you current office or commercial property, or plan a new construction for your company, you must consider how the heating, air, and ventilation system will figure into your plans. For businesses involving in a new building, the idea of committing to more recent technologies and innovations in the industry seems likely. Wireless systems specially designed for commercial enterprise are not only gaining popularity, but will possibly become the future where commercial HVAC is concerned.

What are the benefits of having a wireless system to control your office heating and air? Take into consideration these points:

1) A wireless system is more cost effective. There are less materials required to set up the system, therefore less parts to worry about and purchase/replace. Already you are working toward a more efficient way of heating and cooling your commercial property. Consider, too, that a wireless system does not take as long to install as a traditional HVAC, so workflow is not interrupted.

2) Ease of use. Wireless sensors set around your building and other workplace property are simple to use and adjust where needed. High quality equipment helps guarantee round the clock comfort for employees and customers/clients.

3) Less maintenance. A system from a trusted name in commercial HVAC will run on a long-life battery and provide you with few problems. Even in the instance of an equipment breakdown, wireless systems have proven simpler to repair or replace.

4) Cost efficiency. As your wireless system properly manages the heating and cooling of your buildings and offices, you may find your monthly energy bills decrease. Sensors in place will detect activity and temperature and adjust accordingly so you are not necessarily heating or cooling an unused area.

5) Flexibility. Because wireless systems, naturally, have no wires, the motion sensors may be adjusted to place anywhere they are needed. If you decide to renovate your office – take down walls, move furniture – the sensor can be easily relocated to a place where supplemental heat or air from a fan or copier will affect it.

Wireless technology is the future, and it is fair to say that the future is here. When you install a wireless system to manage your commercial HVAC equipment, you benefit your company with reduced energy bills, increased comfort, and the convenience of a heating and cooling solution that lasts. Consult with your area commercial HVAC contractor to learn more.

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Source by Kathryn Lively

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Importance of Buying a Centrifugal Air Mover

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Centrifugal air movers are ideal for drying applications and are regularly utilized by experts in the water damage restoration industry. They can be utilized to blow away dust during demolition or accelerate drying times for drywall and paint jobs – expediting all of those procedures that consistently take up your time.

This sort of air mover makes an exceptionally focused airflow by routing the air through a series of ducts, dampers and different segments. The Inside of these units appears as a hamster wheel, which is the reason these fans are known as squirrel cages. Read on to know more.

Why should you choose a centrifugal fan?

Centrifugal fans (or spiral fans) are comprised of a fan wheel (impeller) driven by a motor that pivots in a stator appended to the wheel. This stator has two openings: the first one supplies the focal piece of the impeller with liquid, which penetrates by vacuum and is blown by centrifugal effect through the second orifice towards the edge.

There are two types of outward fans: forward bended fans and reverse bended fans. Forward bended radial fans have a “squirrel cage” and a number of sharp blades extending from 32 to 42 units. Their productivity is 60 to 75%. Reverse bended centrifugal fans have a proficiency of 75 to 85%, with various units running from 6 to 16.

The overpressure is higher than that provided by a propeller fan; these fans are a lot more suitable for long circuits. Apart from this, they offer an advantage regarding noise level: they are much quieter.

Things to consider

Environment

The environment where the machine works should be considered to pick the correct blower-motor combination.

Outdoors

Consider a Totally Enclosed Fan Cooled (TEFC) electric motor on direct drive units, or a belt driven unit with an included climate spread.

Grimy or Dusty Environment

A TEFC engine is best for longer life and ideal productivity.

Corrosive Environment

In wet, damp conditions, a stainless-steel blower is suggested, ideally with a stainless wash-duty motor.

Hazardous Environment

Consider a non-sparking blower, for example. This is a radial or high-pressure blower.

Airflow (CFM)

CFM or cubic feet per minute is the estimation of how much air is moved by the machine in 1 minute. Remember: a higher torque doesn’t mean a higher CFM. For the most part, you can expect that axial air movers should have a CFM rating of at least 3000. Centrifugal air movers regularly run 2400-2700 CFM.

Motor power and speed

While picking an air blower, you can consider the engine that will control it which could extend from a ΒΌ HP engine to 1 HP engine. To begin with, you’ll have to consider where you’ll be utilizing the air mover.

The Takeaway

Unlike your standard fan, centrifugal air movers work by giving a consistent blast of air that you can direct on a particular spot. As a result, you can use them for a variety tasks, including drying wet surfaces, improving the airflow and preventing different types of machines from overheating.

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Source by Shalini M

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How to Delay Ejaculation in Five Simple Ways

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The key to learning how to delay ejaculation is to train your mind and body to perform as you wish it. There are many things you can do to master the art of ejaculating. The most vital thing is to simply know your body well and control it.

One

But first you have to know your body. Know what it can do and not do. Understand the signals it gives you and act on them. We all have different points that draw us up to the point of “No Return” Know your point, know what takes to get you there and learn to not reach that point so fast.

Two

When you are thinking you are going to have sex a good thing to do is to masturbate and before you ejaculate stop. Wait a few minutes and do it again. Train your body not to release until you are ready to release. Do not give in to the urge. When you feel the need hard and fast to cum then reach down with your strong hand and grab the base of your penis and squeeze hard.

Three

Learn the breathing routine. When you are close to releasing the ejaculate, take a deep breath through your nose, as deep as you can and hold it for at least five seconds and up to ten. Then slowly let it go through your mouth. Do this repeatedly until you are in control again.

Four

Change positions. There are so many positions that you can try. Do not be shy and just go for it. Slow down your strokes and breathe. Missionary style is NOT the best for controlling your ejaculations.

Five

Something you can try as a technique to train your body before having sex is the cold water treatment. Whenever you take a shower the last thing you do is to shower your genitals with cold water, icy cold is good. The idea behind this is the penis and the testicles need lower heat that is why they are outside of the body. This keeps the production of sperm at their best.

The goal of doing this, and you can alternate off during the say shower cold and hot, cold and hot, just make sure the last is cold. What this does is give your testicles a teasing work out. Where the cells and the muscles contract and expand, contract and expand repeatedly. A great work out don’t you think?

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Source by Corinne Bridgewater

/ By edd / spiral-freezers/ / 0 Comments

Stay Cool and Stay Raw

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I’m sure by now everyone has noticed, the heat has officially set in this summer. It’s time to cool off with some delicious fruits and vegetables that actually help lower your bodies temperature and keep you nice and hydrated. The raw food diet is probably the most ideal diet for summer time as everything yummy is in season, lower in price, and there is no need to turn on that hot stove or oven to whip up a delicious meal. Nature provides an abundance of foods this time of year to help keep us cool and nourished. Many fruits and veggies that have a shorter season like summer squashes, cucumbers, and melons come into their full glory during the hottest months, and have the most cooling effect. Some cooling vegetables include crunchy lettuces, mixed baby greens, celery, crisp sunflower greens and sprouts, and broccoli which make great salad fixings. Chop up some fresh corn into your summer salads as well, I have certainly been enjoying that lately. For a light dressing try a high quality extra virgin olive oil like bariani, and our brand new coconut vinegar and coconut aminos. Combine with minced fresh herbs and a pinch of salt and our salad will be rawkin and ready to go.

Aim for high levels of juicy fruits during the summer. Melons of all kinds are amazing, watermelon being especially cooling to the system. Try also different varieties like galia, crenshaw, canary, Tucson cantaloupe, and casaba. Some of these melons are so sweet and delicately flavored and textured that they nearly melt in your mouth. Keep your melons in the fridge once ripe to avoid spoilage and to heighten their cooling effect on the body. Make sure to load up on lots of tomatoes, fresh bell peppers, cucumbers, zucchini, and yellow summer squashes too, as these are cooling fruits that will make great bases for savory meals when fruit isn’t hitting the spot. You can make veggie chips out of the summer squashes by simply marinating in a little olive oil, salt and herbs and dehydrating until crisp. Also, one of my ultimate summer meals is zucchini pasta, which is so light and flavorful, even your cooked food friends will be amazed that it is raw and so easy to make. Great for summer potlucks and family meals.

Here are just a few of my favorite summertime recipes:

Cilantro-Lime Watermelon Juice- (Brrr…this juice is SURE to cool you off quickly)

1/3-1/2 of an organic seeded watermelon- chilled in the fridge. Rinse outer rind thoroughly because you will be juicing the rind as well. The rind of the watermelon is very mild in flavor and packs a punch of minerals, and will help balance the sweetness of the flesh.

1 handful fresh cilantro

juice of 1 whole lime

3 handfuls fresh sunflower greens

Optional- 3 large lacinto kale leafs (black dino kale)

Juice together and serve right away.

Cool Cucumber Dill Soup

3 cucumbers peeled

1/4 cup fresh lemon juice

1 whole avocado

2 tbs fresh dill

2-3 tbs bariani olive oil or Ruth’s hemp seed Oil

a few pinches Bali sea salt to taste

Simply blend above ingredients until very smooth, garnish with a bit of fresh dill and chunks of avocado. This soup is amazingly light, refreshing, and yet filling Great with flax crackers for a light evening meal.

No Heat Pasta

*Spiralize both green zucchini and yellow summer squash for a nice color variation

Summer Noodles:

2 zucchini, 1 yellow summer squash spiralized

sun dried tomato Sauce:

2 medium heirloom tomatoes

1 cup sun dried tomatoes- soak for a few hours to soften

1/4 cup bariani olive oil

1/3 cup chopped fresh basil

fresh herbs to taste such as oregano, sage, and thyme

A few pinches of Bali sea salt

-Optional- 1 clove garlic (will increase the heat element of this dish)

hemp seed Pesto:

1/4 cup hemp seeds

1/2 cup walnuts

1/4 cup bariani olive oil, hemp oil, or pumpkin seed oil.

1 cup packed basil

1/8 cup lemon juice

A few pinches of Bali sea salt to taste

Optional- 1 clove of garlic.

Both of these sauces can be blended until smooth or left a bit chunky in a food processor depending on your preference. spoon onto zucchini noodles, garnish with fresh basil leaves

Follow your bodies natural gravitation towards light, refreshing raw foods this summer to stay balanced and active. Also remember to drink plenty of fresh, pure water along with your fruits and vegetables to ensure our body is perfectly hydrated even as the temperatures rise.

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Source by Alex Malinsky

/ By edd / spiral-freezers/ / 0 Comments

Cool Sculpting Review – Zeltiq’s Cool Sculpting Miracle?

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This Cool Sculpting review will get you up to speed about what it can do, and if it really works. The science-based company, Zeltiq, has developed a new medical device designed to help you lose fat in specific trouble areas. This non-invasive procedure, called Cool Sculpting, was created based on the work first started by Dr. Rox Anderson at the Wellman Labs located at the Massachusetts General Hospital in Boston.

The basic concept is to apply extreme COLD temperatures to the fatty area of the body to safely eliminate fat from the body.

How does it work?

The Cool Sculpting process is performed in a doctor’s office but does not involve any needles or anesthetics. The procedure begins by using a suction applicator where portions of the skin are sucked up into the applicator. At this point, the cooling process begins causing your skin to be in contact with temperatures that are high enough to transform the fat from a liquid to a solid. Once in the solid formed, the fat cells will slowly begin to be destroyed and will safely be processed through the body.

Does it hurt?

Throughout the procedure there is virtually no pain, some claim to feel a “pulling” or “tugging” effect on their skin but it goes away within about 10 minutes.

This should not be considered a weight loss procedure and is only done for those patients who are just slightly overweight. I’ll stress in this Cool Sculpting review that yes, it is approved by the FDA but be careful of copy cat procedures and be Absolutely sure to use a real DOCTOR who is experienced in performing the Cool Sculpting procedure. Currently only certain parts of the body are able to have this treatment done including:

  • tummy
  • love handles
  • back
  • inner thighs

Zeltiq is currently working on improving the device to allow it to treat other areas of the body, so again, you want to talk with your doctor about any area of your body you want help with.

Other Cool Sculpting reviews have also noted that certain patients have been able to see success with Cool Sculpting, averaging about twenty to forty percent fat loss. While you will begin to see results in about four to six weeks, it may take up to three months to see your full results. Many people are happy with the success of their first procedure but you are able to have up to three procedures done on each area of your body. To add safety to the treatment, there is a required one or two month waiting period between procedures.

However, Cool Sculpting methods are VERY expensive and does not actually cure the problem of obesity. Finding a well-rounded exercise and nutrition plan that will get you long-term results is the healthiest approach to losing weight.

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Source by Sara Reynolds

/ By edd / spiral-freezers/ / 0 Comments

Kennel Ventilation – Supply and Exhaust

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Correctly designed ventilation can reduce or eliminate odors, reduce bacteria buildup, and help maintain that fresh clean smell in the kennel. Your pets will be happier and you’ll spend less time trying to dry floors and eliminating the odors. If you have trouble understanding information in this article, email us on the web at Sun Hill Pet Supplies.

No matter the size of your facility, ventilation will play a key role in the first impression of visitors to the kennel. Simply stated, ventilation is controlled, directed air movement.

Design basics:

  1. Air exchanges: change all of the air in the room four to six times an hour. Calculate the room volume in cubic feet, multiply the result by four, five or six, then divide by sixty to find the air volume, in cfm (cubic feet per minute).
  2. Exhaust pick-up points: most kennel odors are created at the same level as the dogs so position your exhaust pick up points lower than 30 inches to insure the odors are pulled downward, away from your nose. However, not lower than twelve inches from the floor to prevent cleaning water from entering the ventilation system.
  3. How many exhaust pick up points: Multiple points throughout the room insure air movement has the chance to properly circulate. Remember we are not talking about the return air duct to your heat system, we’re talking about exhaust vents to remove air from the room.
  4. Air supply: Install your air supply vents, high up in the room. This allows the air to flow downward to the exhaust pick up points, thereby pulling the odors down, and away from your nose. Remember, supply air must be filtered and tempered, (heated or cooled), not be raw outside air. Your HVAC contractor can install a unit that provides sufficient fresh air into the ventilation system to meet the supply requirements.
  5. Position of air supply and exhaust vents: Position the supply vents over the aisle ways and the exhaust pick up points at the back of the runs in the walls or as pipes coming down the walls. If the heating source is a “hot air” system, have one third of the heated air introduced at the floor and two thirds introduced via the vents over the aisle ways.
  6. Type and design of the exhaust fan: You’ll want to use a blower with a centrifugal wheel as the air mover. Fans and blowers that use a blade similar to that of a window fan won’t be able to overcome the static pressure created by the ductwork required for multiple pick up points
  7. Size the blower: Create a safety factor by multiplying the cfm you calculated in step #1, by 1.5 to insure your moving enough air, then choose the exhaust blower to move that amount of cfm at ½” of static pressure or higher. Static pressure is resistance to air flow, usually created by the duct system.
  8. Duct sizing: High air velocity in the system will insure good air flow so size the ducts for around 2000 fpm (feet per minute) air velocity. The easiest approach to sizing is to determine the size of duct needed to handle the total air flow, then, install that size as the primary duct, throughout the building. Determine the number of drops you want and divide the area of the primary duct by the number of drops. Each drop is then sized to that area. Use this formula to determine primary duct size: (cfm / 1500fpm) x 144 = duct area in square inches

Formula information: · http://www.Grainger.com is a great source for blowers.

· Area of a circle: radius squared times 3.14 ( [r x r] x 3.14) Example of area of 3″ round duct: (1.5 x 1.5) x 3.14 = 7.065 sq inches

· Convert square inches to square feet: divide square inches by 144. From the example above 7.065 square inches divided by 144 = .049 square feet.

Example:

1. Kennel room is 20 ft x 15 ft with a 10 ft high ceiling: 20 x 20 x 10 = 4000 cubic feet

2. Five (5) air changes per hour = 4000 x 5 = 20,000 cubic feet

3. Determine cfm (cubic feet per minute) 20,000 / 60 = 333 cfm

4. Safety factor air flow: 1.5 x 333 = 500 cfm

5. From Grainger’s: http://www.grainger.com/Grainger/items/2C946 This blower moves 537 cfm at ½” of static pressure, and is only $165.38 and can be plugged into most outlets.

6. Primary duct size in square inches: (500cfm / 2000 fpm) x 144 = 36 square inch duct. You could use 6’x 6″ square duct, or 7″ diameter round duct.

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Source by Glenn Adams

/ By edd / spiral-freezers/ / 0 Comments

Why Your Air Conditioner May Not Be Working (Or Working Well)

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Few things are more frustrating than buying something new that doesn’t work. A significant financial investment like an air conditioner definitely should not be that way. There are key points to keep in mind when buying an air conditioner, and yes, you need to maintain it too. So if you have a fairly new air conditioner (less than a couple years old), read on for the reasons why it may not be working too well.

  • Too big. A unit that is too large will not remove humidity well.
  • Too small. A unit that is too small will not get your home cool enough on the hottest days.
  • Improper installation. Customers should pay attention to duct installation, unit location, and insulation amount.
  • Low energy efficiency ratio. An air conditioner model with high efficiency is important. At minimum, air conditioners need to have a seasonal energy efficiency ratio (SEER) of 13. Higher SEER ratings will equal greater savings. Look for an Energy Star sticker that gives the energy efficiency rating or calculate the rating yourself by dividing the watt rating into the BTU.
  • Dirty filter. Don’t forget to clean or replace your air conditioner’s filter. Dirty filters block air flow and will reduce your air conditioning system’s efficiency greatly. Air that does get through may carry dirt to the evaporator coil and limit the coil’s heat-absorbing ability. Some filters are reusable while others must be replaced. Filters should be cleaned or replaced every 1-2 months, when using the air condition often. Filters may need to be checked even more frequently if the air condition is on constantly, the house is dusty, or there are pets in the house.
  • Dirty evaporator coil. Even with a clean filter, the evaporator coil will still collect dirt, just not as fast. The evaporator coil should be check every year and cleaned as necessary.

For those with old air conditioners (from the 1970s and earlier), save energy by getting a new air conditioner as today’s most efficient air conditioners use 30% to 50% less energy to produce the same amount of cooling as air conditioners from the 1970s.

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Source by Ryan Corey