I designed it, using IRS2092 + IRFI4019H.
Piece element. Digital power amplifier.
USE + - 35 TO + - 55V DC
Frequency response diagram - actual measurement: (digital power amplifier, because of the relationship of the filter, will have a little upward gain measured in a 8 ohm load, which will not be shown in 4 Europe. This measurement data is consistent with the official IR)
Piece element. Digital power amplifier.
USE + - 35 TO + - 55V DC
Frequency response diagram - actual measurement: (digital power amplifier, because of the relationship of the filter, will have a little upward gain measured in a 8 ohm load, which will not be shown in 4 Europe. This measurement data is consistent with the official IR)
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Hello,
I tried to buy an assembled board of this amplifier, and on every item I see there is a description like this: "Output Power: Scalable output power from 25W- 500W (see Table 1)".
The problem is I can´t find that table!
I would like to try a pair of this boards because they look good, have good comments and seems to have low THD, the idea is to use them with 80w speakers, for that reason I´m interested on that table.
Can you suggest which power supply can I use with them? I have a +/-40v 400va, but I don´t know if that will be too much power for my 80w speakers.
Thanks in advance.
Gustavo
I tried to buy an assembled board of this amplifier, and on every item I see there is a description like this: "Output Power: Scalable output power from 25W- 500W (see Table 1)".
The problem is I can´t find that table!
I would like to try a pair of this boards because they look good, have good comments and seems to have low THD, the idea is to use them with 80w speakers, for that reason I´m interested on that table.
Can you suggest which power supply can I use with them? I have a +/-40v 400va, but I don´t know if that will be too much power for my 80w speakers.
Thanks in advance.
Gustavo
Hello,
I tried to buy an assembled board of this amplifier, and on every item I see there is a description like this: "Output Power: Scalable output power from 25W- 500W (see Table 1)".
The problem is I can´t find that table!
I would like to try a pair of this boards because they look good, have good comments and seems to have low THD, the idea is to use them with 80w speakers, for that reason I´m interested on that table.
Can you suggest which power supply can I use with them? I have a +/-40v 400va, but I don´t know if that will be too much power for my 80w speakers.
Thanks in advance.
Gustavo
I have many digital and analog amplifiers.
In digital amplifier. I highly recommend L15D-SMD.
+- 40V is no problem. It can work very well.
Believe me. The power of the speaker doesn't make any sense.
In fact, the power of the power amplifier is equally meaningless.
If you need more volume. So what you need is one. P7MINI similar preamplifier.
It's not a higher power amplifier.
ljm...
We have corresponded before regarding the kit I purchased on eBay. The schematic I found from IR is correct - except for the components connected to the output. The IR schematic does not show how the four 2N5551 transistors are connected into the circuit, nor the protection relay. The circuit shows D5A and D6A. I am trying to trace this out - not easy. Since this is unit you sell, I would hope that you'd have an accurate schematic for the LJM L15D KIT IRS2092 Power amplifier kit. Thank you, Tom
We have corresponded before regarding the kit I purchased on eBay. The schematic I found from IR is correct - except for the components connected to the output. The IR schematic does not show how the four 2N5551 transistors are connected into the circuit, nor the protection relay. The circuit shows D5A and D6A. I am trying to trace this out - not easy. Since this is unit you sell, I would hope that you'd have an accurate schematic for the LJM L15D KIT IRS2092 Power amplifier kit. Thank you, Tom
My l15dsmd is exactly the same as IR's circuit diagram.
L15d SMD does not have 5551 5401. It has D5 D6 diodes.
Look at the picture
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If you mean ac25-0-25.
Add the rectifier. Filter capacitor. We get + - 36V DC.
It has no problems to use. L15dsmd only. Other models are not included.
L15dsmd can use a slightly lower voltage.
L15d or l15dx2 (iraudamp7s) can't.
There should be no fakes. And I suggest digital power amplifier.
Try not to use industrial MOSFET. At present, I think irfi4019. Is second only to irf6645.
Others, such as 2nxx series MOSFET, have poor performance
I just received a pair of these boards in the mail and temporarily hooked them up. I used a cheap AliExpress 500W LLC +/-48V power supply with a 10000uf/63v cap on each rail and it sounds great driving a pair of 4ohm PSB Stratus Minis!
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Just received recently these boards and I don't know is there some issue or they shouldn't be used with any preamp ? I tried with simple tinny preamp and hooking on phone and there is a lot of humming noise, also it's pretty loud on just 1 notch volume up on phone and there is 75 lines. Is something wrong with my boards or it's just preamp unnecessary?
im looking to use those.
still trying to find a decent psu for them
https://www.aliexpress.com/item/32948381172.html seem like the cheapest bet but 220V input, im in canada so 120V.
next option is 2 of those: https://www.aliexpress.com/item/1005005910971875.html
but im not absolutly sure they are isolated and I can put them in series to get +-48V
any tips?
still trying to find a decent psu for them
https://www.aliexpress.com/item/32948381172.html seem like the cheapest bet but 220V input, im in canada so 120V.
next option is 2 of those: https://www.aliexpress.com/item/1005005910971875.html
but im not absolutly sure they are isolated and I can put them in series to get +-48V
any tips?