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.
24db Fixed high pass filter at 80hz.
24db 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.
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.
24db Fixed high pass filter at 80hz.
24db 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.
