Planet Audio PX4000D Class D Monoblock Power Amplifier
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Class D Topology
A class-D amplifier or switching amplifier is an electronic amplifier where all power devices (usually MOSFETs) are operated as binary switches. They are either fully on or fully off. Ideally, zero time is spent transitioning between those two states. In this way, power loss is significantly reduced and making a D class amplifier anywhere from 75% to 95% efficient. To maintain high efficiency, the filter is made with purely reactive components (inductors and capacitors), which store the excess energy until it is needed instead of converting some of it into heat. Some other advantages include Reduction in size and weight, Reduced power waste as heat dissipation and hence smaller (or no) heat sinks and Reduction in cost due to smaller heat sink and compact circuitry.
MOSFET Power Supply
Metal–Oxide–Semiconductor Field-Effect Transistor is a transistor used for amplifying or switching electronic signals. We use it in computers, telephones, game consoles, cars, electrical appliances and in this case, our amplifiers. They are found in systems where information is processed or stored. A MOSFET is basically an electrical switch that allows the flow of electrical current. An electrical switch has two possible states, on or off. The MOSFET performs its most important role in our D Class amplifiers by allowing or preventing the flow of power and creating an efficient amplifier.
1 Ohm Stable
The PX4000D is a 1-Ohm stable amplifier which is able to continuously power loads of 1 ohm X 1 channel without encountering difficulties such as overheating. Almost all car amplifiers are at least four ohm stable and some are two ohm stable. 1 Ohm stable amplifiers are typically made to power up subwoofers that demand the heavier power load requirements to be able to perform the way they were made to perform.
Low Level Inputs With Pre-Amp Outputs
A low level input is measured in volts. It comes in the form of RCA (low level) outputs on the back of your head unit and goes to the RCA inputs on your amplifier (Right/Left). With that in mind, you can take control of more power by connecting more amplifiers together using the RCA pre-amp outputs (Right/Left) from your primary amplifier straight to the RCA inputs of a second or satellite amplifier (Right/Left).
Strapping Capable
You are able to strap your PX4000D amplifier to another AXIS class D amplifier 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 Bass Boost (0 to +18 dB)
So you have Bass Boost and Variable Bass Boost. The difference between the two is that with Bass Boost you either have extra bass or you don’t. But with Variable Bass Boost you have the control of exactly how much bass you want to pump out to your subwoofer(s). And this is what you get with the PX4000D Amplifier - Variable Bass Boost.
Features
- Thermal, Overload and Speaker Short Protection
- Soft Turn-On Circuit
- Remote Turn On / Turn Off circuit
- Variable Input Gain Control
- Input Voltage Sensitivity Selector
- Variable Low-pass Filter
- 0 - 180º Phase Shift Selector
- Switchable Input Sensitivity: 100mV to 2V-8V
- Nickel Plated RCA Low Level Inputs
- Nickel Plated Speaker and Power Terminals
- Black Anodized Heatsink
- LED Power and Protection Indicators
Variable Subsonic Filter (15Hz to 45Hz)
Subwoofers start to bottom out trying to reproduce low-frequency signals that are below their abilities to sound off. Bottoming out is more a mechanical problem and happens when the subwoofer driver reaches the limit of its excursion and creates a clacking or flapping sound instead of the low frequency entering its voice coils. If your sub is bottoming out, short of changing the driver into one that has better low-frequency handling, you can try the PX4000D which has a subsonic filter to filter out frequencies below its specified low frequency limits.
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The [TITLE] Details
- Amazon Sales Rank: #61860 in Car Audio or Theater
- Brand: Planet Audio
- Model: PX4000D
- Number of items: 1
- Dimensions: 2.35" h x 10.00" w x 14.96" l, 11.33 pounds
Features
- 4000 Watts Max Power (One Ohm)
- Switchable Input Sensitivity: 100mV-2V or 2V-8V
- Variable Bass Boost (0 to +18dB)
- Chrome Plated Connections and Illuminated Logo
- Strapping Capability: Strap two amps together for twice the power
PX4000D - Planet Audio
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