Hello all,
while discussing some amp-issues on an event with a diesel generator, we once again went into the topic of Active PFCs in PA Amps with switch mode PSU - so I went on the yourney of gathering information... Which Amps do have a very good active PFC (which is able to almost mimic a constant load)? And since I have found only snipplets of information, I thoght it might be a good idea to start a thread, maybe make a list... ?
I am not a PSU Expert - please feel free to correct me whenever needed. If this thread makes sense and will grow, I would be happy to polish it... I will start a list of amps, I know have acive PFC that mimiks sine-type draws from the mains:
Not sure about:
All input on the issue is welcome 🙂
while discussing some amp-issues on an event with a diesel generator, we once again went into the topic of Active PFCs in PA Amps with switch mode PSU - so I went on the yourney of gathering information... Which Amps do have a very good active PFC (which is able to almost mimic a constant load)? And since I have found only snipplets of information, I thoght it might be a good idea to start a thread, maybe make a list... ?
I am not a PSU Expert - please feel free to correct me whenever needed. If this thread makes sense and will grow, I would be happy to polish it... I will start a list of amps, I know have acive PFC that mimiks sine-type draws from the mains:
- All Hoellstern Amps
- PKN Controll XE and XD models
- Powersoft X-Series
Not sure about:
- Crown i-Tech Series
- older/other Powersoft
All input on the issue is welcome 🙂
If you look at the front end power supply schematics, there is your answer.
Mackie (Loud Technologies) , Crown Tech, Bose and most newer power amplifiers use a PFC.
It is a legal requirement to use a PFC for most European equipment including stepper motor driver power supplies for medical equipment.
All Sanyo LCD Projectors have used a PFC since 2001.
Mackie (Loud Technologies) , Crown Tech, Bose and most newer power amplifiers use a PFC.
It is a legal requirement to use a PFC for most European equipment including stepper motor driver power supplies for medical equipment.
All Sanyo LCD Projectors have used a PFC since 2001.
Thanx for commenting.
I would like to focus on those amps that have an active PFC, which is able to get an almost sinusodial draw from the wall (lets say around 0,9..). Those are rare and not all models from one manufacturer are alike. Crown seems to have them in iTech, XT Models don´t have them. Most Entry level Amps sold in Europe and even a lot of more expensive gear don´t have these (just simple PFCs).
A list with specific models would be the goal.
I would like to focus on those amps that have an active PFC, which is able to get an almost sinusodial draw from the wall (lets say around 0,9..). Those are rare and not all models from one manufacturer are alike. Crown seems to have them in iTech, XT Models don´t have them. Most Entry level Amps sold in Europe and even a lot of more expensive gear don´t have these (just simple PFCs).
A list with specific models would be the goal.