I still don't see a schematic.
Why don't you admit you don't have it or won't supply it
Quit jacking with us.
If you are going to sell amp kits, do it right.
Why don't you admit you don't have it or won't supply it
Quit jacking with us.
If you are going to sell amp kits, do it right.
Circuit often changes the changes.Can not be used as the correct design.
May refer to #5.
In the KIT, not with the document.
May refer to #5.
In the KIT, not with the document.
Laugh.
Is done and leave for some time. The work is very busy, as well as there is no time to DIY and to forums.
Was too busy😛
Let's see the correct design and do away with all the excuses.
Man!, you are dancing all around the right answer and solution.
Man!, you are dancing all around the right answer and solution.
I have a chassis with preamp and a PSU of +-DC 53V . I have only to decide for the power amplifier and protection circuitry.
What provides better sound, an Class A / B amplifier as the L7 or a classe D as the L15D?
If you prefer the class D, which is the difference between modules and the module L15DX2 L15D (other than being double)? Why the larger size of the L15DX2 caps ? Which is better?
What provides better sound, an Class A / B amplifier as the L7 or a classe D as the L15D?
If you prefer the class D, which is the difference between modules and the module L15DX2 L15D (other than being double)? Why the larger size of the L15DX2 caps ? Which is better?
hi ljm,
Could you give the heatsink thermal resistance carateristics that you involve in L15D ver.3?
Marc
Could you give the heatsink thermal resistance carateristics that you involve in L15D ver.3?
Marc
L15D for active 2-way?
I’ve been lurking this and the L20D thread for some time and have a few questions about the boards. I’m building an active 2-way bookshelf speaker with a full range driver and a bass woofer where I plan to use the 2 x L15D boards + 1 x SMPS inside each speaker. The full range driver is 8 ohm 20W and the is woofer 4 ohm 150/300W (nominal/peak). For power supply I’m planning to use the SMPS300RE +-45V.
I’ve been lurking this and the L20D thread for some time and have a few questions about the boards. I’m building an active 2-way bookshelf speaker with a full range driver and a bass woofer where I plan to use the 2 x L15D boards + 1 x SMPS inside each speaker. The full range driver is 8 ohm 20W and the is woofer 4 ohm 150/300W (nominal/peak). For power supply I’m planning to use the SMPS300RE +-45V.
- Will the speaker drivers’ impedance difference be a problem for the L15D boards + SMPS300RE?
- Although the SMPS300RE is not taking advantage of the L15D’s full potential (as opposed to e.g. the SMPS500R), will this SMPS be sufficient considering the speaker drivers I’m using?
- Is the heat generated from the boards so high that I need to vent the speaker enclosure or even place external heat sinks?
L15DX2 higher than the L15D performance difference is not particularly large.
Distortion smaller.
Analog amplifier L7, its wide range of applications. No fixed rules on the voltage.
Are free to use, L7, very durable
It should use the L15D + - 45V DC power supply.
The L15D the fever is lower than the L20D 25D. He can be full of power without the need to increase the radiator.
Attachments
Marked on the front of the reference map detailed size chart I can find.
L15D fever is relatively small in actual use, almost no temperature.
Attachments
According to the datasheet of the original IRAUDAMP7s has multiple protection features that have not been included in LJM designs.
Anyone know if its necessary in original (or ebay copy ) IRAUDAMP7s amp add another protection circuit as a delay for anti-plop or similar?
Anyone know if its necessary in original (or ebay copy ) IRAUDAMP7s amp add another protection circuit as a delay for anti-plop or similar?
Cristi's latest IRS2092 designs are supposed to include multiple protections.
Connexelectronic CxD400
Connexelectronic CxD300
The detailed description is not yet on the website.
Speaker protection board, including anti-pop delay are easy to find on ebay.
In fact I have a design similar products.
But after testing his performance is not the L15D good, so I gave up.
I repeated the same reference design based on the IRAUDAMP7S.
But every time the failure of the test in all SMT less than the performance of L15D.
400K HZ PWM frequency. Inductors, capacitors, filters.
Waveform distortion. L15D DIP parts. Distortion is very small.
At present, I still have no way to using SMT instead of DIP.L15D version.
But after testing his performance is not the L15D good, so I gave up.
I repeated the same reference design based on the IRAUDAMP7S.
But every time the failure of the test in all SMT less than the performance of L15D.
400K HZ PWM frequency. Inductors, capacitors, filters.
Waveform distortion. L15D DIP parts. Distortion is very small.
At present, I still have no way to using SMT instead of DIP.L15D version.
Attachments
SMT test the performance of the oscilloscope performance.
Not a substitute for L15D, maybe I can be solved in the future so that it can be smaller.
Not a substitute for L15D, maybe I can be solved in the future so that it can be smaller.
We need to understand is that the MOSFET temperature is not low.
As the voltage increases. Fever is obvious, because it has a quiescent current.
Therefore, the larger the heat sink must be equipped with.
As the voltage increases. Fever is obvious, because it has a quiescent current.
Therefore, the larger the heat sink must be equipped with.
