Great video I'm wanting to get into solid state amp building.I have been building tube amps with great success.Not so good with solid state keep these awesome vidios coming they are very helpful thanks
Thanks for the video, eddie! I hope you give it a try with different numbers of capacitors. I would be very interested in seeing how the characteristics change with differing amounts of bulk capacitance. Might help us understand why it was designed with the number of caps it has.
Thanks Jonathan - that’s exactly what I want to show. I want us to better understand what we need and why. I hope you like the testing video that will post tomorrow.
Thanks.This looks like a good power supply design and board. I have one question though.You said you were aiming for 5V of ripple from the power supply and therefore you would only need quite small caps.Firstly, that seems awfully high for ripple-are you going to rely on the amp to filter out the rest of the ripple?Secondly,my understanding of power supplies for power amps is that you need a decent amount of capacitance to deliver the peak power requirements.I'm not an engineer so I could be wrong but what are your thoughts?
That’s a great question and leads into my testing in a video to come. There are several factors; one is what voltage is at the voltage rail and how much that can dip (ripple) and still give enough voltage to allow the circuit to work (which is referred to is voltage headroom). Another possible issue is; does the ripple conduct noise into the circuit? Well, the amplifier has feedback, which at the low frequency ripple, it is very high, so it has very good ripple rejection. A benefit of more ripple is obviously less capacitance cost, but another might be that current conducts more of the cycle so possibly less noise. I’ll talk more about this in the videos to come.
Hey Eddie! How did this project finish up? I'd love to hear the Hiraga 30w. I have built one but still need that big 18-0-18 transformer. I'm new to the concept of CRC filtering. Again, I built a Pass style CRC type PCB with 27kuf caps! It seems some people love Class A, others loathe the inefficiency. I want to find out for myself. One gripe: I can't understand why Toshiba stopped production of its famous FETs, like the K170? They're hens teeth now, but still highly sought after, hence often counterfeited, and rudely expensive!
Thanks for asking! This is one project that I have to pick up in the near future and finish it. I got stuck on needing an enclosure large enough. They are expensive and so I started some other projects. But I do want to get back on this project so I will do it very soon.
@@KissAnalog lol, yes I know. I have a few amp projects in drydock, needing either an enclo$ure or another tran$former. The good stuff is expensive! Happy New Year to you and yours!
Looks relatively interesting supply - I guess you'd want to tune it for need like you're doing so it makes for a great video. I'm not clear on your calculation for the ripple though: you have two, independent channels with their own capacitance and bridge rectification but you combine the current draw for the purposes of your capacitance calculation. I.e. you're looking at 5A per channel but the current you use in the calculation FOR ONE CHANNEL is 10A?? Even if I've misunderstood and it's 10A per channel, then the divisor for the number of caps must be 8, not 4? Could you clarify this a bit for me. I guess if there's plenty of voltage overhead then 5V ripple would be ok: I assume the idea is to keep the ripple above the level of voltage actually needed? Did you pick 5V for any particular reason?
Hi Andrew - sorry this comment was lost for awhile;) I was using 10 Amps as 5 per channel from this single power supply, and I think I chose 5 V as a good number to keep the ripple above the voltage needed. There are 4 caps per bank (for plus and minus voltage rails), so I divided by 4 as this is how many caps that I can install. Does that make sense? I just did a video comparing the output of two transformers and how much power I can get because of the higher voltage/power of a larger transformer. ruclips.net/video/IDNM2OAAXeg/видео.html
Thank you! Try this link. This I think is the same design on a different board that might actually be better with larger resistors: rover.ebay.com/rover/1/711-53200-19255-0/1?mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2FAleph-5-60W-A-class-Amplifier-D-I-Y%2F112627178092%3Fhash%3Ditem1a391a5a6c%3Ag%3A~fYAAOSwaSZZ-4e4&campid=5338607533&toolid=10001&customid=Aleph 5 Amplifier
Hi, never too late to the game. Thanks for the video! Question: Can the Hiraga Le Monster be used for the following circuits: Dartzeel Dartzeel NHB-108 circuit Input voltage: DC +/-55V (Transformer not less than 250W) Output power: 100 W RMS @ 8 KRELL KSA50 circuit Working voltage: ± 35V (Class A), Class AB working condition ± 45V Output power: 50W (Class A); 150W (Class AB)
Hi Eddie, Perhaps I'm asking a stupid question, but why not have regulated power supply for an audio amp? Is it because of dynamic supply capacity? Or cost and current capabilities? Wouldn't a regulated supply better remove ripple and noise? I suppose that a good amp design and sufficient margins in V and I will be enough? Cheers Mark
That is such a great question Mark! Thanks for asking. I think a proper regulated power supply would be great, but I think in the past they might not have been great, so people got a bad taste. Also cost would go up. I want to explore this by offering a regulated power supply. This will happen in videos to come.
The original "Le Monstre" was running on a 14V lead-acid car battery as a power supply ! Zero ripple and very low output impedance ;) (Source : l'Audiophile n. 27)
I think your videos will bring a resurgence of building the Aleph 5 by new DIY and old. Bring a lot of traffic to diyaudio.com and the Pass Labs thread and forms.
Great video I'm wanting to get into solid state amp building.I have been building tube amps with great success.Not so good with solid state keep these awesome vidios coming they are very helpful thanks
Thank you for the great feedback! I appreciate you!
Your channel is my bigger discovery last days!! I even listen your videos in a car :D
That's awesome! Thank you!!
Hi Eddie, I really enjoyed your tutoring. Thanks for another great video.
Thank you for the great feedback!
Thanks for the video, eddie! I hope you give it a try with different numbers of capacitors. I would be very interested in seeing how the characteristics change with differing amounts of bulk capacitance. Might help us understand why it was designed with the number of caps it has.
Thanks Jonathan - that’s exactly what I want to show. I want us to better understand what we need and why. I hope you like the testing video that will post tomorrow.
Thanks.This looks like a good power supply design and board.
I have one question though.You said you were aiming for 5V of ripple from the power supply and therefore you would only need quite small caps.Firstly, that seems awfully high for ripple-are you going to rely on the amp to filter out the rest of the ripple?Secondly,my understanding of power supplies for power amps is that you need a decent amount of capacitance to deliver the peak power requirements.I'm not an engineer so I could be wrong but what are your thoughts?
That’s a great question and leads into my testing in a video to come. There are several factors; one is what voltage is at the voltage rail and how much that can dip (ripple) and still give enough voltage to allow the circuit to work (which is referred to is voltage headroom). Another possible issue is; does the ripple conduct noise into the circuit? Well, the amplifier has feedback, which at the low frequency ripple, it is very high, so it has very good ripple rejection. A benefit of more ripple is obviously less capacitance cost, but another might be that current conducts more of the cycle so possibly less noise. I’ll talk more about this in the videos to come.
Great video.. Informative. Thank you.. 🙏✨
Thank you for the support!
Hey Eddie! How did this project finish up? I'd love to hear the Hiraga 30w. I have built one but still need that big 18-0-18 transformer. I'm new to the concept of CRC filtering. Again, I built a Pass style CRC type PCB with 27kuf caps! It seems some people love Class A, others loathe the inefficiency. I want to find out for myself. One gripe: I can't understand why Toshiba stopped production of its famous FETs, like the K170? They're hens teeth now, but still highly sought after, hence often counterfeited, and rudely expensive!
Thanks for asking! This is one project that I have to pick up in the near future and finish it. I got stuck on needing an enclosure large enough. They are expensive and so I started some other projects. But I do want to get back on this project so I will do it very soon.
@@KissAnalog lol, yes I know. I have a few amp projects in drydock, needing either an enclo$ure or another tran$former. The good stuff is expensive! Happy New Year to you and yours!
Looks relatively interesting supply - I guess you'd want to tune it for need like you're doing so it makes for a great video. I'm not clear on your calculation for the ripple though: you have two, independent channels with their own capacitance and bridge rectification but you combine the current draw for the purposes of your capacitance calculation. I.e. you're looking at 5A per channel but the current you use in the calculation FOR ONE CHANNEL is 10A?? Even if I've misunderstood and it's 10A per channel, then the divisor for the number of caps must be 8, not 4? Could you clarify this a bit for me.
I guess if there's plenty of voltage overhead then 5V ripple would be ok: I assume the idea is to keep the ripple above the level of voltage actually needed? Did you pick 5V for any particular reason?
Hi Andrew - sorry this comment was lost for awhile;) I was using 10 Amps as 5 per channel from this single power supply, and I think I chose 5 V as a good number to keep the ripple above the voltage needed. There are 4 caps per bank (for plus and minus voltage rails), so I divided by 4 as this is how many caps that I can install. Does that make sense? I just did a video comparing the output of two transformers and how much power I can get because of the higher voltage/power of a larger transformer.
ruclips.net/video/IDNM2OAAXeg/видео.html
Thank, s... From indonesia
Great to hear from our friends in Indonesia!
The amplifier kit is sold out long ago.
Please update if possible.
Thank you! Try this link. This I think is the same design on a different board that might actually be better with larger resistors: rover.ebay.com/rover/1/711-53200-19255-0/1?mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2FAleph-5-60W-A-class-Amplifier-D-I-Y%2F112627178092%3Fhash%3Ditem1a391a5a6c%3Ag%3A~fYAAOSwaSZZ-4e4&campid=5338607533&toolid=10001&customid=Aleph 5 Amplifier
Hi, never too late to the game. Thanks for the video!
Question: Can the Hiraga Le Monster be used for the following circuits:
Dartzeel Dartzeel NHB-108 circuit
Input voltage: DC +/-55V (Transformer not less than 250W)
Output power: 100 W RMS @ 8
KRELL KSA50 circuit
Working voltage: ± 35V (Class A), Class AB working condition ± 45V
Output power: 50W (Class A); 150W (Class AB)
Hi Eddie,
Perhaps I'm asking a stupid question, but why not have regulated power supply for an audio amp? Is it because of dynamic supply capacity? Or cost and current capabilities? Wouldn't a regulated supply better remove ripple and noise?
I suppose that a good amp design and sufficient margins in V and I will be enough?
Cheers
Mark
That is such a great question Mark! Thanks for asking. I think a proper regulated power supply would be great, but I think in the past they might not have been great, so people got a bad taste. Also cost would go up. I want to explore this by offering a regulated power supply. This will happen in videos to come.
@@KissAnalog Thank you, Eddie. Looking forward to it.
Cheers
Mark
The original "Le Monstre" was running on a 14V lead-acid car battery as a power supply ! Zero ripple and very low output impedance ;) (Source : l'Audiophile n. 27)
LOL I think I read that;) i used to be an avid reader of that publication. Thanks!
@@KissAnalog You can see some pictures of the supply on this page sound-au.com/tcaas/monster29.htm
Thank you for this link @ee! Very nice! I should do a video to talk about this paper;)
Starground is the only best. Really starground, even there are 2 or 12 or more ground wires.
Thank you! I agree;)
@@KissAnalog bus ground isn't good.
I think your videos will bring a resurgence of building the Aleph 5 by new DIY and old. Bring a lot of traffic to diyaudio.com and the Pass Labs thread and forms.
t lech Thanks - that would be great if people feel the confidence to build their own equipment;) I appreciate your feedback.