Reviews Variable Power

Makita Brush Set (Makita 9565CV, 9564CV, PW5001C)

Powerful 13.0 AMP motor delivers more output and variable (2,800 - 10,500) RPM for the most demanding applications.
SJS technology is a mechanical clutch system that minimizes motor and gear damage.
Variable speed control dial enables user to match the speed to the application.
Electronic controller provides constant speed control which automatically applies additional power to the motor to maintain speed under load.
Electronic controller provides soft-start which is designed to suppress start-up reaction for smooth start-ups and longer gear life.

... output to you speakers and subwoofers by connecting two amplifier channels.
Mosfet Power Supply - A MOSFET is an electrical switch that allows the flow of electrical current. It controls the output voltage & current precisely by removing the output current sensing loss & eliminating all secondary feedback circuitry.
Variable Bass Boost - Bass Boost allows you to adjust the low bass within the boost range to just the way you like it.
Variable High-Pass Crossover - Speakers reproduce sound based on high, low or mid-range frequencies. A variable high pass crossover gears specifically towards “highs” such as all size speakers including mid ranges and tweeters.
Variable Low Pass Crossover - Subwoofers reproduce sound based on a number of different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction.
Specs - Dimensions: 15.01” x 5.12” x 1.7”, Weight: 5.6 lbs..
Warranty - Planet Audio provides a powerful 6-year Platinum Online Dealer Warranty so long as the purchase is made through Amazon.Com. We strongly encourage professional installation of this product to ensure proper and safe functionality.

a variable AC input to a transformer input DC bridge rectifier to produce a variable output.
The adjustable voltage transformers does not convert AC to DC. It requires an AC input and the output is also AC. Also, the unit will not affect the cycle rate from the power company. If your power system is providing 60Hz, the Variac auto transformer will not change that, the ouput will be an undistorted 60Hz. This unit is rated up to 20 Amps or 2KVA Peak (16A Continous)..
Power: 2000VA,Input voltage: 110V, Input current: 18A, Output voltage: 0-130V, Rated output current: 15.38A (Continuous operation for 2 hours, 003c10A can work continuously.
This variable transformer is the perfect speed controller. The speed is infinitely variable, and because a transformer doesn't chop up the AC waveform like electronic speed controllers do, there's no noise, humming, etc..
If you're planning on using this as an "industrial" or bench-top supply with heavy loads, I'd recommend examining the brushes and adjusting the spring pressure on the windings. This can improve performance by reducing brush-contact sparking. Otherwise, this device is ready to work right out of the box..

... precisely by removing the output current sensing loss & eliminating all secondary feedback circuitry.
Strapping Capable - You are able to strap two R3400D amplifiers and double the power that is being sent to your subwoofer(s). You now have the ability to connect more subwoofers to take advantage of the extra power.
Variable Subsonic Filter - To prevent your subwoofer(s) from bottoming out, the variable subsonic filter filters out frequencies below the subwoofer(s) specified low frequency limits and allows the driver to reach a maximum safe excursion.
Variable Low-Pass Crossover - Subwoofers reproduce sound based on a number of different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction.
Specs - Dimensions: 13.5 x 10.44 x 2.25, Weight: 7.63 lbs..
Warranty - BOSS Audio Systems provides a powerful 6 year Platinum Online Dealer Warranty so long as the purchase is made through Amazon.Com. We strongly encourage professional installation of this product to ensure proper and safe functionality.

Powerful 12.0 AMP motor delivers more output and variable (2,800 - 11,000) RPM.
SJSII provides a leaf spring and cam gear drive mechanism that is engineered to reduce vibration.
SJSII provides a mechanical gear drive to help prevent motor and gear damage by dampening the force on the gear when the wheel is forced to stop.
Variable speed control dial enables user to match the speed to the application.
Electronic Controller is a three-part electronic feature designed to provide the required power in high torque applications for increased tool life.

4000 W MAX Power, 1 Channel 3000 W X 1 RMS @ 1 ohm 1500 W X 1 RMS @ 2 ohm 750 W X 1 RMS @ 4 ohm.
Variable Low Pass Crossover, Variable Bass Boost and Variable Subsonic Filter and Switchable Phase Control.

Picasso Nano Series 2-Channel Class D Car Amplifier.
RMS Power Rating: 4 ohms: 115 watts x 2 chan. / 2 ohms: 175 watts x 2 chan..
Variable Bass Boost (0 to +12 dB bass boost at 45 Hz) & Variable low-pass filter (50-250 Hz, 24 dB/octave).
Pulse Width Modulated MOSFET power supply.

...fers that demand the heavier power load requirements to be able to perform the way they were made to.
Strapping Capable - You are able to strap two AR3000D amplifiers and double the power that is being sent to your subwoofer(s). You now have the ability to connect more subwoofers to take advantage of the extra power.
Variable Subsonic Filter - To prevent your subwoofer(s) from bottoming out, the variable subsonic filter filters out frequencies below the subwoofer(s) specified low frequency limits and allows the driver to reach a maximum safe excursion.
Variable Low-Pass Crossover - Subwoofers reproduce sound based on a number of different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction.
Specs - Dimensions: 12.31 x 6.50 x 2.80, Weight: 6.86.
Warranty - BOSS Audio Systems provides a powerful 6-year Platinum Online Dealer Warranty so long as the purchase is made through Amazon.com. We strongly encourage professional installation of this product to ensure proper and safe functionality.