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Frequently Asked Questions

What is the difference between single and dual voice coil subs?

MTX Mobile Audio - Frequently Asked Questions
It is easy to confuse a dual voice coil sub as a better subwoofer, but that’s not the case. You will get the same output from either sub when used in the right application. Both sets of terminals must be wired up when using a dual voice coil subwoofer. Your amp and the number of subs will determine which subwoofer you would want. For example, if you had a TA5601 amplifier and wanted to run a pair of 12s, you would want single voice coil 4Ω woofers.
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What does ohm load mean? What is the difference between dual voice coil and single voice coil subs?

Please Read: NEW S&S FAQ - S-10 Forum
the ohm load is the total resistance that your amp is seeing when wired up to the subs/speakers. In general, lower ohm loads will mean that your amp will be putting out more power. However, you need to make sure that your amp is stable at that ohm load or you will cause significant damage. The ohm load can be changed by wiring the subs differently, ie. Parallel vs. series. To determine ohm load when wired in series, the ohm load = Resistance1 +Resistance2+Resistance3+....
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What's a dual voice coil sub?

Subwoofers Frequently Asked Questions
A dual voice coil subwoofer has two separate voice coils (each with its own connections), offering more flexibility in system wiring than a standard sub. The DVC sub can be wired in three different configurations: parallel, series, or independent. This way, you can wire the subwoofer according to your system design and preferences. Check out the article on dual voice coil subwoofers for more information.
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Is it ok to run the voice coils of a DVC (Dual Voice Coil) sub to different channels of an amp?

Audiobahn 2006
It is acceptable to run the coils off of different channels of an amp. You will need to make sure that you are receiving a mono signal to both inputs on the amplifier; otherwise the sub will be trying to play 2 different signals. This can eventually lead to permanent damage.
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What is the difference between a single-hose system and a dual-hose system?

Dry Ice Blasting with Cold Jet: Frequently Asked Questions
In a dual-hose Venturi Series dry ice blasting system, an ejector type nozzle, similar to a conventional abrasive media blasting nozzle, is used to combine the compressed air stream with the dry ice particle carrying vacuum stream created by the ejector. In Cold Jet's single-hose Radial Feed Series dry ice blasting systems, the dry ice pellets are mechanically fed into the air stream. No energy is wasted creating a vacuum to pull the pellets through a separate line.
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What is the difference between Dual and Single Layered DVD's?

FAQ
Size. Dual Layered Disc are Twice the size of a Single Layered Disc. Dual layered disc's also cost more.
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Will dual subs be better than 1?

Surround Associates - Specializing in all aspects of surroun...
Generally speaking, dual subwoofers placed under the left and right front speakers will eliminate any leaning of the low frequencies towards a single sub as well as lower the distortion thanks to increased headroom. Dual subs may also make the monitor system easier to calibrate.
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What is known as the Speaker Voice Coil?

Welcome to JVCUAE.COM
The voice coil is the real heart of the speaker. It gets energized by the amps output signal and moves the cone in and out to produce the audible sound. The voice coil is wound on a round former, about 1 1/4" long, that is made of either paper, Nomex, Aluminum, or Kapton. Each has its advantages and disadvantages, the advantages having to do with power handling ability, the disadvantages having to do with weight. A coil is usually either two or four layers of copper wire.
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What's the difference between a single and a dual source speaker selector?

Phoenix Gold :: Support :: Frequently Asked Questions
A single source selector (ISM models) accepts input from one audio source (receiver/amplifier) and distributes audio output to a number of zones or speakers. However, a dual source selector (DSSM, VSS models) accepts inputs from two separate amplifiers/receivers and allows the user to select the program from one of the two sources for each zone output. With dual source selectors, the audio programs from both amplifiers cannot be selected at the same time for any zone output.
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What's the difference in single- and dual-rate springs?

FAQ's - Works Performance Products Shocks
Depending on each application, either single-rate or dual-rate springs are available. Dual-rate springs are just that-- a spring set with two separate rates. This is done with a short spring stacked on a longer spring. As both springs collapse they result in a soft, or initial, rate. The spring set will retain this initial rate until the short spring stops compressing. At that point, the spring rate "crosses over" to the stiffer, or final, rate.
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What is the difference between single and dual power source LCMs?

Wintek-News-FAQ
Single power source modules needs just one 3 - 5V power supply for the entire module. The module contains an inverter that supplies the operating voltage for driving the liquid crystal. Dual power source modules need a 3- 5V power supply for the LCM and another power supply to provide the Vop for the liquid crystal.
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What is the difference between dual track and single track holders?

FAQ for Almetek Industries, manufacturer of pole tags, utili...
The difference between dual track and single track is that single track holders hold one line of tags while dual track holds two lines of tags. Click here to view E-Z tags and holders.
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Question: What is the difference between Single flush or Dual flush Toilets?

Steam Showers | Stalls | Shower Enclosures | Tubs | Tekon |B...
Answer: Acquinox? dual flush toilets will save you over 6,000 gallons of water per year for a family of 4. The Dual Flush system gives you the best of both worlds: The Low Flush uses less than 8/10s of a gallon of water while the Normal Single Flush uses 1.58 gallons ? still within conservation limits.
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What is the difference between a single conversion and a dual conversion receiver?

FMA Direct : FAQs
ALSO SEE THE SUPPORT SECTION FOR A TUTORIAL REGARDING SINGLE AND DUAL CONVERSION. The single conversion receiver uses a single Local Oscillator at 455 kHz removed from the transmitter frequency to achieve narrow band and high sensitivity. A dual conversion receiver has two local oscillators. The first L.O. is 10.7 MHz removed from the transmitter frequency to overcome the one weakness of single conversion; i.e., the lack of rejection at the image frequency.
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What is the difference between a single-band and dual-band phone?

Working Assets Wireless customers enjoy the best wireless coverage available through Sprint, providing the largest all-digital, all-PCS nationwide network. The network covers more than 4,000 metropolitan areas and communities across the country. Digital technology allows your call to be processed and carried on the network more efficiently than an analog network. Digital technology also ensures greater call security than analog technology.
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What is the difference between a single band and a dual band booster amplifier?

SmoothTalker FAQ - Single Band VS Dual Band Boosters
A booster is a radio frequency amplifier that will do two things: it will take the signal that is transmitted by the cell phone when a call is engaged and use electrical energy to make it stronger and send it out through the antenna to the tower. The booster will also receive the signal that was generated by the tower, through the booster antenna, use electrical energy to amplify the tower signal and send it to the phone.
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What is the difference between a single hose design and a dual hose design?

Frequently Asked Questions about Portable Air Conditioners
AIRLUX portable air conditioners have only one air exhaust hose as oppose to some other models that have two air hoses, one for air intake and one for air exhaust. A single hose unit will take air from the room that it is in and return most of that air back into the room as cold conditioned air. A dual hose unit works by taking in air from the outside through one of its hoses and using that air to cool the unit - and then that hot air is expelled through the exhaust hose.
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What is the difference between single-action and dual-action swivel clamps?

Racquet Stringing Machine Frequently Asked Questions
The single-action clamp is a one piece assembly - both the clamp and the base are attached to the turntable. Unfortunately, the brake of the single-action clamp wears out with frequent use, requiring regular maintenance. In 1990, the Wilson Sporting Goods Co. introduced its Pro Staff (Prestige) stringing machine, which was manufactured in Taiwan. It utilized the single-action swivel clamp assembly, and it had brake problems (as mentioned above). Wilson Sporting Good Co.
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What is the difference between digest and single messages?

folkmusic FREQUENTLY ASKED QUESTIONS v.5.0b
Many people prefer to subscribe to this list in "digest" form. This means that all of a day's messages are combined in a single email message with a table of contents. Due to network traffic and other factors, digests aren't received at the same time each day or even at the same time by all subscribers. It's not unusual for digest posts to be separated by more than or less than 24 hours. Occasionally, two digests may arrive on the same day.
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How many ways can a single coil pickup be made?

Seymour Duncan/Basslines
There are so many combinations and multiples of combinations that can make for many types of pickups. Here are some elements that make for many types of single coil pickups. You can see from above that there are so many factors that can determine how a pickup is built and the possibilities are endless with so many combinations.
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What are your subs?

Tulse Hill & Dulwich Hockey Club - Frequently Asked Ques...
Most members pay through a standing order system. This covers subs, match fees (including teas) and training fees paid in five payments across the season. The total cost for the 2007/08 is £310 (with a surcharge for members of the 1st and 2nd XIs). Alternatively members can pay a one-off subscriptions fee of £185.00 plus £10 per game, but if you are going to play more than 13 games a season it makes sense to pay by standing order.
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Should I use single-side or dual-side foil?

Victor Insulation
The single-side foil is great for acoustic applications where sound can be absorbed into the natural fibers. The dual-sided foil provides an excellent radiant heat barrier to resist heat flow.
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Why is there Single Link and Dual Link?

FAQS
DVI has the ability to employ two links. Each link is comprised of three data channels for RGB. Each link has a maximum bandwidth of 165 MHz. Dual link has a maximum bandwidth of 330 MHz. Dual link supports resolutions up to 2048 x 1536. Currently, most equipment is Single Link.
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Is it necessary to wire both voice coils of my subs up to an amplifier?

Audiobahn 2006
Yes, by only wiring one voice coil, you can cause damage to the subwoofer making it unplayable. You always need to wire both voice coils together.
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WHAT is a Custom Coil?

Spring Works - Frequently Asked Questions (FAQ) leaf spring ...
Custom coils are designed to your exact specifications. They can be made either constant rate or varible rate.
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What is the difference between dual enrollment and a home school assistance program?

Iowa Depatment of Education
If a child is dually enrolled, s/he may participate in all academic and extracurricular activities offered at the district on the same basis as a regularly enrolled child. A child enrolled in a HSAP must also dually enroll to participate in academic and extracurricular activities.
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How do I transpose only a SINGLE Voice on the Yamaha VL70-m?

WIND CONTROLLER FAQ (UPDATED)
Make sure it is set to "VOICE" Mode (not "VL-XG" Mode) (Use the MODE and VALUE- and VALUE+ buttons to change this if needed) There is no Master setting on the VL70-m, but it is possible to control the level of the effects in the VL70-m as well as several other aspects of the VL70-m sounds via MIDI continuous controller messages. These controllers offer a LOT of really expressive sound design possibilites.
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What is the difference between a Dual Major and a Dual Baccalaureate?

Urban Affairs Advising Center Student Information FAQ's
You can complete a dual major (more than one course of study) by completing the requirements for each major. At graduation time, you will have both majors listed on one diploma (example: Bachelor of Arts, Communication and Sociology). Please note that if you are completing a Bachelor of Science degree and a Bachelor of Arts degree, you may only complete this as a dual baccalaureate degree.
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On my sub, why are there 2 + and 2 - terminals on each voice coil?

Audiobahn 2006
There are 2 + and 2 - on each voice coil. This is so when wiring the subs together you do not need to try and fit both wires in the same hole. You do not have to use both on each coil, but it will let you use a larger wire. Think of them as Y connectors. Both + and both - go to the same place on the same coil. You can wire as normal and only use 1 + and 1- on each coil.
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