Hi
Jamesfeline here again, just completed a BK mosfet 100w monoblock amplifier. I have made 2 of these and I am very pleased with the sound .. very warm with good punchy bass, no hum or hiss. I have uprated the power supply caps and installed a modified speaker protection unit (Velleman unit) I have modded this unit so both channels can be used for one channel, so dual redundancy. The amp runs warm but not hot to touch, so the whole case acts as a heatsink. I have added a good mains filter and earth lift switch. I am going to make 5 of these for a surround sound set up in the front room.
please see pics below.
many thanks for looking.
regards
Nick
Jamesfeline here again, just completed a BK mosfet 100w monoblock amplifier. I have made 2 of these and I am very pleased with the sound .. very warm with good punchy bass, no hum or hiss. I have uprated the power supply caps and installed a modified speaker protection unit (Velleman unit) I have modded this unit so both channels can be used for one channel, so dual redundancy. The amp runs warm but not hot to touch, so the whole case acts as a heatsink. I have added a good mains filter and earth lift switch. I am going to make 5 of these for a surround sound set up in the front room.
please see pics below.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
many thanks for looking.
regards
Nick
Last edited:
Nice.
I like your house.
BTW, what is it on the table?
Looks like a double LTP circuit with polar cap in the input. You can probably remove that cap, especially if your preamp already have one. Or use a Non-polar capacitor. And the 10n mylar cap in parallel with 6K8 resistor is better be replaced with MKT. You have good parts there why waste it with bad caps all around. And the feet are ugly.
I like your house.
BTW, what is it on the table?
Looks like a double LTP circuit with polar cap in the input. You can probably remove that cap, especially if your preamp already have one. Or use a Non-polar capacitor. And the 10n mylar cap in parallel with 6K8 resistor is better be replaced with MKT. You have good parts there why waste it with bad caps all around. And the feet are ugly.
Hi
Thanks for the capacitor comments, I will have a look at changing these on the next build. Remember beauty is in the eyes of the beholder, those feet are hand turned from solid metal then chrome plated .. better then all the cheap poorly made plastic ones that you see on the net.
all the best
Nick
Thanks for the capacitor comments, I will have a look at changing these on the next build. Remember beauty is in the eyes of the beholder, those feet are hand turned from solid metal then chrome plated .. better then all the cheap poorly made plastic ones that you see on the net.
all the best
Nick
I think that polyester green cap is not metallized, so not an MKT. Actually, whatever it is, that green cap is cheap, so I mean, change with an expensive one 🙂D), such as Vishay-Roederstein MKT, the one with plastic rectangular box.
Yes, the table feet are pretty indeed.
the green cap (if I am looking at the correct one) is almost certainly a metalised film. It could be mylar or polyester or terephthalate or many others.
What is the capacitor doing?
That will determine which parameters make it suitable for the duty.
Guessing at what price range is certainly not the way I could advise any Member to advance their knowledge.
What is the capacitor doing?
That will determine which parameters make it suitable for the duty.
Guessing at what price range is certainly not the way I could advise any Member to advance their knowledge.
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