Anybody had any experience with these modules?
LJ L15 MOSFET Amplifier boards 150W 8 ohm Mono (Pair) - Audiophonics
Im looking to build a solid state AB amp, looking for a solid and dynamic sound..
I welcome ANY input
Thanks
Mrfunk
LJ L15 MOSFET Amplifier boards 150W 8 ohm Mono (Pair) - Audiophonics
Im looking to build a solid state AB amp, looking for a solid and dynamic sound..
I welcome ANY input
Thanks
Mrfunk
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Not sure what solid sound is, and all sound is by its nature dynamic. The units claim 0.02% THD and -3dB at 5Hz, so go by that. There is one 4/5 review on that site, but Google translate doesn't do a good job with it!
There is no source resistors for the output mosfet. I suppose they are very well matched. 🙄
There is no bias current adjustment potentiometer....curious to know how can they control the target bias current from one board to the other....
I do not see mosfet gate protection diodes.
The indicated claimed Power ratio must be based on a very beefy power supply to get 4 times the power into 2 ohms....😉
Still Hard to tell if it is a good choice...🙄
Fab
There is no bias current adjustment potentiometer....curious to know how can they control the target bias current from one board to the other....
I do not see mosfet gate protection diodes.
The indicated claimed Power ratio must be based on a very beefy power supply to get 4 times the power into 2 ohms....😉
Still Hard to tell if it is a good choice...🙄
Fab
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Thanks for the response. So will keep looking, there seems to be many ideas and projects on this forum. Any idea of a tried and tested design? I'm looking for say 100w per channel,
I'm in UK, so kken for a kit or start from scratch
I'm in UK, so kken for a kit or start from scratch
Imo, those heatsinks are way too small for 6 o/p devices rated at 150W each.
Also the fin direction should be vertical for best airflow.
No need to even bother looking at the electrical
Also the fin direction should be vertical for best airflow.
No need to even bother looking at the electrical
I think these are a LJM design, completely agree on the heatsink situation, will keep looking, but keen to find a kit in UK or Europe thanks for the helpful replies
Was also looking at this module FSDD 120L Dual Differential Stereo Amplifier Class A/B 2x120W 8 Ohm - Audiophonics
Again not much other choice, here in UK, Europe?
Again not much other choice, here in UK, Europe?
A tried and tested design at least.
I can assemble and solder 100%, and make from scratch.
But don't want to re invent the wheel
So would appreciate any assistance in any direction.
I can assemble and solder 100%, and make from scratch.
But don't want to re invent the wheel
So would appreciate any assistance in any direction.
Audiophonics.fr are mostly aliexpress or ebay Chinese modules. I'm sure UK have some kits available. At least from velleman
If you don't mind building from scratch I can recommend this amp from Bonsai of this parish. 50 watts in class AAB so needs decent sized heat sinks. Does sound good though.
Hifisonix kx-Amplifier
I would hope so 🙂
So you are okay with the mechanical part, chassis,transformers etc
What is wrong with some of the Apex designs or DIYAudio designs?
Please can you point me in the right direction, not sure even where to start, I see there are lots of different apex designs. To be honest, I haven't the patience or time to experiment, just want a solid tried and tested amazing sounding Amp design 😁,
Really appreciate your help... And guidance
And pleased I haven't been told to use the search function, trust me I have, and now need guidance
Thanks
Fynk
Hi Fynk, I do not like to recommend something that I have not tried or experienced first hand.
But as far as the DIYAudio Honey Badger design, I am pretty sure that is a solid design, all the mechanical bits are available in the DIYAudio store. Something to consider, if that is your cup of tea? Rick
But as far as the DIYAudio Honey Badger design, I am pretty sure that is a solid design, all the mechanical bits are available in the DIYAudio store. Something to consider, if that is your cup of tea? Rick
Thanks, just looking into that design, I started looking at the apex designs, but got so lost and confused in that thread 🙄