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Starkrimson® Ultra Amplifier Modules -- 250/500W into 8/4ohm
- Thread starter orchardaudio
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OP
- Thread Starter
- #82
Happy to.
I have sent him many messages without any response. I believe he will not review my products because I post my own measurements and he is all about getting measurements for products where they are not avaialble.
OP
- Thread Starter
- #84
BTW
@SIY has agreed to measure the new amps for AudioXpress like he did with the 150W modules in this article:
https://audioxpress.com/article/fre...d-audio-bosc-and-purifi-audio-eigentakt-eval1
@SIY has agreed to measure the new amps for AudioXpress like he did with the 150W modules in this article:
https://audioxpress.com/article/fre...d-audio-bosc-and-purifi-audio-eigentakt-eval1
And with luck, I’ll have my lab set up and going this week in my new location. Still aching from carrying boxes…
finally got my modules 
and now the tests ...
the first impression is verry impressive
i will let it work for a couple of days to see if anything will change and a test with and without Line Filter. Then little interior cosmetics etc.
and now the tests ... the first impression is verry impressive
i will let it work for a couple of days to see if anything will change and a test with and without Line Filter. Then little interior cosmetics etc.
Attachments
finally got my modules
the first impression is verry impressive
i will let it work for a couple of days to see if anything will change and a test with and without Line Filter. Then little interior cosmetics etc.
Nice ! ... why the extra caps on the header?
it’s an option if you want towards Leo
I quote Leo "I have had multiple requests about adding additional rail capacitance to the amplifier. Based on my listening and testing the low-frequency response is slightly improved (subjective) and the performance of the amplifier is slightly better at 50W of output power and up. "
I quote Leo "I have had multiple requests about adding additional rail capacitance to the amplifier. Based on my listening and testing the low-frequency response is slightly improved (subjective) and the performance of the amplifier is slightly better at 50W of output power and up. "
OP
- Thread Starter
- #89
About 1.5 to 2dB improvement in THD+N at power levels of 50+ watts
like this at first,
I have a Parasound HINT 6 integrated amplifier, I know they are not in class but when I connect these monoblocks to my KEF R7, Parasound goes on sale
the difference is how to describe it, when I go back to HINT 6 as if I put the thick bag over the speakers, so much difference, and I can't even talk about the texture in the bass area.
when i ordered these modules i wasn't sure (cat in bag concept) but when i first turned them on i couldn't believe it
all in all in a week or two I will send Leo my detailed observation along with pictures of the finished amps
I have a Parasound HINT 6 integrated amplifier, I know they are not in class but when I connect these monoblocks to my KEF R7, Parasound goes on sale
the difference is how to describe it, when I go back to HINT 6 as if I put the thick bag over the speakers, so much difference, and I can't even talk about the texture in the bass area.
when i ordered these modules i wasn't sure (cat in bag concept) but when i first turned them on i couldn't believe it
all in all in a week or two I will send Leo my detailed observation along with pictures of the finished amps
This is huge! Are you going to respin your boards to accommodate this extra capacitance? What are the rail values BTW (if it's not a secret)?
It seems to me that more capacitance = less distortion, just like it is when filtering the reference voltage pin in ADC and DAC chips.
OP
- Thread Starter
- #92
This is huge! Are you going to respin your boards to accommodate this extra capacitance? What are the rail values BTW (if it's not a secret)?
It's not a secret. The rails are +/-40V most people use the Hypex SMPS1200A100 which provides this voltage. Since these modules are for DIY and not everybody will use the hypex supply the caps may or may not be needed depending on the other power supply used. I may get away from using the Hypex supply myself and just do the old-fashioned toroid transformer--> full bridge rectifier --> large cap.
Also, all of my posted measurements are without the caps.
no, i need XLR
OP
- Thread Starter
- #96
OP
- Thread Starter
- #97
I created this today while building a customer's unit. 3+ hours down to 10 seconds.
@amirm, would it be possible to review these new DIY class D amp modules, as you did for the Purifi units?
thanks for the effort, i ordered a custom LR 1 Pro router from mapletree audio
Very excited to see your build. I am looking forward to making MonoBlocks out of these boards as you have. Can you please post you impressions about the amps. Is the SS "box" on the side just after the Mains a hum eliminator?finally got my modules
the first impression is verry impressive
i will let it work for a couple of days to see if anything will change and a test with and without Line Filter. Then little interior cosmetics etc.
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