The P4L Innovations LLC-4 is a four channel line output converter that was engineered, tested, and handmade in the USA. The LLC-4 is perfect for use with factory or aftermarket radios. This unit converts your high level speaker outputs into a low level RCA signal that is safe for aftermarket amplifiers.
The LLC-4 has the following specifications.
60 watts RMS max input per channel
20hz-20khz frequency response
Four RCA output channels
Adjustable output sensitivity
OFC 16 gauge direct wire inputs
Chassis ground to reduce noise.
3D printed PETG enclosure available in three colors.
Included in package
One LLC-4 unit
Owners manual
Cable ties
Warranty Info:
The LLC-4 comes with a one year limited warranty. This covers manufacturer, component, and material defects only. Improper installation and abuse is not covered under our warranty. The warranty only applies to the original purchaser. If you have any issues with your LLC-4 beyond the warranty period, please reach out to us through our repair request form and we will be happy to help.
The P4L FS.500 is a class D full range monoblock amplifier. This amplifier was engineered, tested, and produced in the USA. It features a completely bespoke power supply and output section design.
The Heatsink
Each aluminum heatsink is machined in Ohio, while the acrylic is laser cut and engraved at our facility in Michigan. All holes are drilled and tapped by hand at our facility as well. The heatsink was designed to keep the amplifier running cool, while keeping a lightweight profile. The center acrylic section allows for the PCB to be visible in a standard mounting position. It also allows for the amplifiers to be customized upon request. Each heatsink features 3D printed PETG end caps.
The Power Supply
The FS.500 features a classic switch mode power supply design. At the heart of the power supply is a hand wound transformer using an oversized epoxy ferrite core. The transformer is ran by two pairs of mosfets, which are driven by single PNP transistors. Two 16 amp rectifiers are responsible for creating the DC rails for the output section. VCC is generated by an auxiliary winding on the transformer which is rectified by a pair of 1000v rated diodes. The power supply has a generous bank of rail capacitors to store energy for the output section. 80 amps of on-board fusing is used to protect the amplifier and your vehicle in the event of an overcurrent situation.
The Output Section
The output section of the FS.500 Is a half bridge design focused around the IRS2092S driver. The driver runs four 200 volt, 76 amp rated mosfets at a switching frequency of 120khz. This allows the amplifier to play full range at high power levels efficiently, while staying away from the breakdown voltage of the components. The class D switching is filtered through a hand wound inductor using a Kool Mu core, and a 400v rated Wima film capacitor. An abundance of rail capacitors are placed near the output mosfets allowing the amplifier to make great dynamic power during transient notes.
The Filter Network
The simplistic filter network design allows the amplifier to have quality sound output with minimal points of failure. It uses a single op-amp to boost the input signal while using passive components for the high and low pass filters.
Testing and Development
The FS.500 has been in development for over 15 months. During that time, the power supply and output section have gone through many revisions to refine the circuit as much as possible. Our circuit design has gone through extensive environmental, vibration, and load testing.
Amplifier Features:
4 gauge pure copper power input terminals.
8 gauge pure copper speaker output terminals.
Tiffany style RCA input
6db Fixed high pass filter at 80hz.
6db Fixed low pass filter at 100hz
Full range mode
11 volt - 15.5 volt input voltage. (higher voltage models available upon request)
20hz-20khz frequency response.
Green power LED (different colors available upon request)
Built in overcurrent protection
80 amps of onboard fusing
Replaceable aluminum mounting feet
Each amplifier we produce goes through a one hour endurance test to ensure it’s functionality.
Power Ratings at 14.4 volts:
4 ohm: 200 watts RMS x 1
2 ohm: 320 watts RMS x 1
1 ohm: 500 watts RMS x 1
Power Ratings at 15.5 volts:
4 ohm: 300 watts RMS x 1
2 ohm: 430 watts RMS x1
1 ohm: 650 watts RMS x1
Warranty Info:
Each amplifier comes with a one year limited warranty. This covers manufacturer, component, and material defects only. Improper installation and abuse is not covered under our warranty. The warranty only applies to the original purchaser. If you have any issues with your amplifier beyond the warranty period, please reach out to us through our repair request form and we will be happy to help.
The P4L Innovations 75.2 is a low-profile class AB two channel amplifier. This amplifier was engineered, tested, and handcrafted in the USA. It features a completely bespoke circuit design.
Specifications:
8 gauge removable power inputs.
16 gauge removable remote input and speaker outputs.
Separate HPF/LPF for each channel.
6db Fixed high pass filter at 80hz.
6db Fixed low pass filter at 100hz
Full range mode.
10v - 16.2v input voltage.
20hz-20khz frequency response.
0.04% THD at 80% of rated power.
1% THD at rated power.
Damping factor: >70
Signal to noise ratio: 78db
Built in clip indicator at 1% THD
Built in overcurrent protection.
Built in short circuit protection.
Built in overtemp protection.
20 amps of onboard fusing.
3D printed carbon fiber reinforced PETG end caps.
Low profile 3.6" x 5.5" x 1.5" lightweight heatsink.
Each amplifier we produce goes through a one-hour endurance test to ensure its functionality.
Power Ratings at 14.4 volts:
25W x 2 at 4 ohm
45W x 2 at 2 ohm
75W x 2 at 1 ohm
Power Ratings at 16.2 volts:
30W x 2 at 4 ohm
50W x 2 at 2 ohm
82W x 2 at 1 ohm
More About The 75.2
The Heatsink
The heatsink of the 75.2 is compact and lightweight, while still offering plenty of heat dissipation. This amplifier has been tested in environmental chambers at temperatures above 248F (120c). Even at these extreme temps, the heatsink provided plenty of cooling to keep the amplifier running properly. The amplifier’s mounting feet are integrated into the heatsink.
The Power Supply
There isn’t one….this amplifier uses the 10v-16.2v input voltage as its rail voltage. This allows the amp to be simplistic and reliable. The amplifier uses six Wurth 1000uf capacitors to store and filter power for the output section. Several ceramic capacitors are strategically placed around the board for additional filtering and decoupling. An onboard 20-amp fuse is fitted to protect the amp and your vehicle in the event of an overcurrent situation.
The Output Section
The output section of the 75.2 is powered by two TDA7575B IC’s. Each IC is being ran in 1 ohm mode. Doing this allows the amp to make significant power without the use of a power supply. These IC’s have excellent built in protection features and a convenient clip indicator output. We are using the through hole variant of these IC’s to help dissipate heat to the heatsink more efficiently and to keep heat away from other components on the PCB.
The Preamp
The preamp section of the 75.2 is driven by two 072 op amps. Each channel has its own completely separate preamp circuit. This allows the filters to be set differently on each channel. The filter network is composed of all passive components. This makes for a reliable and robust filter circuit.
Testing and Development
The 75.2 has undergone several design revisions during our six months of testing. Our goal with this amp is to bring our customers a well-built, reliable, and affordable amplifier that is one of a kind. The 75.2 has gone through extensive environmental, vibration, and load testing to ensure reliability.
Warranty Info:
Each amplifier comes with a one-year limited warranty. This covers manufacturer, component, and material defects only. Improper installation and abuse are not covered under our warranty. The warranty only applies to the original purchaser. If you have any issues with your amplifier beyond the warranty period, please reach out to us through our repair request form and we will be happy to help.
Foreign debris is a major cause of failure on many Taramps due to their high-power fans. This air filter blocks any materials from being sucked into the amp. It features a laser cut washable filter, and a 3D printed PETG housing.
We are working to verify fitment on other models and will update this listing accordingly.
Verified to fit:
Taramps MD12k
Taramps Smart 8K
Simple, yet effective, aluminum dual zero gauge amplifier inputs.