Yup, I think I'll do dual mono with one toroid per channel. Then double up everything. Seems the V5 release gives the option to purchase everything I have been looking for. Super convenient.
Any of the power supply boards will work. For class AB type amplifiers, you don't usually use resistors betwen capacitors. You can use those boards by just removing the resistors and replacing them with a piece of wire. Class AB type amplifiers usually have much better PSSR than Class A type amplifiers and don't need the additional filtering. Class A amplifiers have a constant current load on the power supply while Class AB type amplifiers have varying current load on the power supply.
If you write email with your requests to toroidy they will let you know shipping, price, options etc.
The Antek AS series is the audio grade.
With all due respect, you seem to be contradicting yourself which raises eyebrows - you mentioned to me you wanted value and asked for the parts cost, which I gave you for a economy IPS+EF3-4 OPS with 80V caps (so 64VDC rails). Now you’re talking about EF3-5 and dual mono transformers? That’s not Eco at all that’s deluxe. Also You seem to be rushing and demanding people answer you. Now rest assured we will answer any build questions, just sometimes it takes a couple days not in 5 minutes. If you’re not getting a response, take the time to search the thread and learn?
Read this slowly, all new builders - I said this build should take you a while, and that also means the planning for it.
I’m going to suggest you start with basics if this your first amplifier build. That would be the EF3-3 or -4, a hypex 63V SMPS, and the speaker protection boards offered in the GB. That way you don’t need soft starts, Tgnd would be optional and gndlift would be optional (can just use a bridge rectifier standalone). This still gives you a state of the art amplifier that will handle 2 ohm dips at reasonable volumes. And I’ve measured the hypex with Wolverine and it’s silent.
If you prefer Linear PSU, fine, but use a well regarded soft start and capacitor bank board to look after it - use the forum search function or google search diyaudio.com please. Go to aliexpress at your peril.
You’re welcome to do what you like just don’t say we didn’t tell you so if your a couple grand in and can’t make it work or blow the internal windings of an “audio grade” toroidal transformer.
Take your time - building AND planning.
Read this slowly, all new builders - I said this build should take you a while, and that also means the planning for it.
I’m going to suggest you start with basics if this your first amplifier build. That would be the EF3-3 or -4, a hypex 63V SMPS, and the speaker protection boards offered in the GB. That way you don’t need soft starts, Tgnd would be optional and gndlift would be optional (can just use a bridge rectifier standalone). This still gives you a state of the art amplifier that will handle 2 ohm dips at reasonable volumes. And I’ve measured the hypex with Wolverine and it’s silent.
If you prefer Linear PSU, fine, but use a well regarded soft start and capacitor bank board to look after it - use the forum search function or google search diyaudio.com please. Go to aliexpress at your peril.
You’re welcome to do what you like just don’t say we didn’t tell you so if your a couple grand in and can’t make it work or blow the internal windings of an “audio grade” toroidal transformer.
Take your time - building AND planning.
Well said Mainframe!
This is what I eluded to in post#5529.
New project excitement must then turn into lots of planning and homework. After all, this is DIY, not DIFM🙂
This is what I eluded to in post#5529.
New project excitement must then turn into lots of planning and homework. After all, this is DIY, not DIFM🙂
I asked how much it would cost to get a ball park. I have been researching the differences and doing a cost/benefit analysis. I do this nearly every day at work. Nothing out of the ordinary and something anyone living in a capitalist society should rightly do.
I never asked for the cost of the cheapest way to build the amplifier. You seemed to have filled in that detail yourself.
Again, never said I wanted the cheapest option. Not once. I want what is best for the loudspeakers I plan to build. The EF3-5 lets me run 2 ohm? That is what I want.
I never demanded answers on a specific time frame. Again, you have added in that little detail yourself. I am seeing a trend. I am also feeling like you are getting upset. I am just asking questions. I think you confused me demanding answers in an immediate fashion with me asking if the questions would ever be answered. You confused that, I did not say what you allude to.
That is what I am doing. Why do I need to read that slowly? Are you starting to become aggressive and talking down to me? Telling someone to "read this slowly" is quite rude.
Clearly not, since you are now being rude.
My last loudspeaker build took 8 months of planning and a single day of assembly. I have projects in the shop that have I have worked on the design for over a year. They are then built in 2 weeks. I have boards until boards upon boards of planning. What I am doing is asking questions and planning. Again, you jump to conclusions about me. You know absolutely nothing about me. I would not assume to know anything about you. I am forming an opinion though
So now you speak for everyone in this group? I have to say, if you are all this way, then I might stick to the multi way forum. We have our share of not as civil people but for the most part everyone is kind and helpful. I don't think I have ever read over there "just google it" like you just wrote.
Why couldn't I make it work? Didn't you tell me the build guide is excellent? As long as someone helps me set the trim pots and I build it to spec then I should be fine. The embedded department has a whole slew of lab grade o scopes I can use whenever I want.
Not really. I have no plans to build this immediately. I am trying to figure what direction to go for the build, then I am trying to figure out exactly what I need to source. I am on the latter right now. I will then read the build guide in its totality, plan the build according to schedule, assemble, then ask for some help setting the trim pots and what not. The shop I run has 40 engineering projects being run concurrently at this very moment. I am no stranger to planning electrically based projects.
FYI, I normally do not bring up what I do for a living anywhere in this forum but some of you seem to think I am just an average joe with ideas of building an amplifier. This couldn't be further from the truth. Even if I were, why couldn't you just show a joe schmoe how to build an amplifier? Over the years I have taught so many people who have turned into great technicians and engineers. How are people to learn if no one will teach them? If you never let anyone new into your hobby you'd just end up with a smaller and smaller group of people interested and the inevitable "why doesn't anyone build their own amplifiers anymore" post.
Well, didn't think that would escalate! Sorry I did not mean to come across rude - just firm - and not aimed at you directly. Please understand when I write a reply on a public forum, I write as if all visitors are reading, and not directly aimed at anyone unless I quote them directly (this should be my signature...). I didn't mean to call you out on anything, but rather understand it is quite common for new builders to skim over text and look for the information they want, rather than read every word and take in the information they should. I hope you appreciate that I was the first to answer your queries in great detail when you asked, and you can appreciate that I just want to save you unnecessary loss or damage.
Most of the experienced builders here see the rushed approach to the high end and see it fail, or the builder is just never heard from again (wonder why), so it is somewhat of a default response to recommend taking a step back or try something easier first. This forum is absolutely littered with newbies coming in hot with expensive plans or coming in with molten aftermaths asking for help fixing.
You've made it clear you built a 3-way as your first speaker, well done, no easy feat, even building it in one day! I have no doubt you skilled enough to build a wolverine, sorry you think we got off on the wrong foot, and I will make sure I can help when and where I can. I will never not help someone because I just don't think they are good enough, but most times that "help" involves giving the information as above. If you get reactive or defensive receiving such information, how reactive are you going to get when a poorly chosen soft start explodes?
Most of the experienced builders here see the rushed approach to the high end and see it fail, or the builder is just never heard from again (wonder why), so it is somewhat of a default response to recommend taking a step back or try something easier first. This forum is absolutely littered with newbies coming in hot with expensive plans or coming in with molten aftermaths asking for help fixing.
You've made it clear you built a 3-way as your first speaker, well done, no easy feat, even building it in one day! I have no doubt you skilled enough to build a wolverine, sorry you think we got off on the wrong foot, and I will make sure I can help when and where I can. I will never not help someone because I just don't think they are good enough, but most times that "help" involves giving the information as above. If you get reactive or defensive receiving such information, how reactive are you going to get when a poorly chosen soft start explodes?
@danieljw
Daniel,
Thanks for your Wolverine videos. In one of them you beautifully showed testing configurations for 8 ohm, 4 ohm and 2 ohm loads using the 10 ohm EBG low distortion power resistors. I have the same ones and I can arrange 10 of them on a heatsink although I have only setup 4 at this time.
Can you point me to your diagram detailing the connections for the 8 ohm, 4 ohm and 2 ohm loads or post individual pictures of your setup with the 10 EBG resistors on the heatsink? I have read ESP’s Project 124 describing his method which uses 4 ohm resistors.
I want to double check since our setup uses 10 ohm resistors. It’s a fun mental exercise to do without resorting to series parallel calculators!
Thanks
Anand.
Daniel,
Thanks for your Wolverine videos. In one of them you beautifully showed testing configurations for 8 ohm, 4 ohm and 2 ohm loads using the 10 ohm EBG low distortion power resistors. I have the same ones and I can arrange 10 of them on a heatsink although I have only setup 4 at this time.
Can you point me to your diagram detailing the connections for the 8 ohm, 4 ohm and 2 ohm loads or post individual pictures of your setup with the 10 EBG resistors on the heatsink? I have read ESP’s Project 124 describing his method which uses 4 ohm resistors.
I want to double check since our setup uses 10 ohm resistors. It’s a fun mental exercise to do without resorting to series parallel calculators!
Thanks
Anand.
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The forum timed out before I could finish my edits. My plan was to replace the 4 ohm resistors in figure 2 of ESP’s link above with the 10 Ω resistors, i.e. (2) 10 Ω resistors in parallel to create a 5 Ω resistor which is close enough and use the connections as detailed in the diagram. As such, the setup would use (8) 10 Ω resistors for a stereo dummy load setup. Throw the whole thing together on a 5U/400 heatsink, 4 EBG resistors per half sink; mount some brackets and be happy.
Best,
Anand.
Best,
Anand.
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Hope you both sorted your differences out. Lol
Sometimes when answering in a text, it is hard to come across the right way. Anyway. I'm one of them people who skates over things. I hope I don't when building this amp. I have to read very slow. But I'll get there. You can't rush a good thing.
Sometimes when answering in a text, it is hard to come across the right way. Anyway. I'm one of them people who skates over things. I hope I don't when building this amp. I have to read very slow. But I'll get there. You can't rush a good thing.
Hi Anand,
I have two 4 ohm sections, which allows 8 Ohm using a series configuration, or 2 Ohm using a parallel configuration. For 4 Ohm I just use one section.
Thanks for your kind words about the videos.
Hope this helps
- Dan
I fully understand the "please don't waste our time" sentiment in a forum. We have this in the MultiWay forum and a lot in the racing community. Guy pops in and wants to do an engine swap not realizing it totals up to $25k, a years worth of work, and a knowledge base that takes years to learn.
Your responses are what convinced me to dive in. Thank you for that. I am sure that 10 years down the road I will be happy I built this amplifier. I do not think I will regret building this or the money it costs. I want to build a "for life" amplifier which is why I'm leaning towards bigger power and a proper dual mono setup.
I will come off as stern through a text medium. In person, I am not that way. My days are filled dealing with ivy league graduate engineers with a chip on their shoulder and hard edged technicians.
As far as it exploding, I am ok with that too. I've let out plenty of magic smoke in my lifetime. I am lucky enough now to have the skills to put the magic smoke back into the machine. If I weren't where I am skill wise, I probably wouldn't jump into this. I don't see how a total newb could attempt to take this on.
Here's some eye candy for you. This is my office setup. These are the monitors that took me 9 months. They are flat to within 3db from 30 hz to 24khz. The F3 is 27hz and the ribbon does extend up to around 35khz. Their off axis isn't very good but they are designed for your head to be stuck right inbetween them. The enclosure is pure function. The waveguide and stand/folded port took over 20 revisions each. The shape nearly eliminates diffraction so the speakers just disappear and the sound seems to come from the computer monitor. Its almost eerie.
I am aware I come off strong. To anyone reading this: that is not my intention, it is a symptom of my profession.
I'm just going to add this for anyone who isn't already aware and as this thread is now quite long (and I'm aware most of us are Engineers who are I.T. literate); the below 2x methods help me 90%+ of the time find information way faster on this, or any, forum. Indeed, some of the information gets out of date, so feel free to post a query on any older information you've found.
Also, you can use the add bookmark feature to save individual posts that you think you may need to get back quick to later (bookmarks saved under your name at the top)
Also, you can use the add bookmark feature to save individual posts that you think you may need to get back quick to later (bookmarks saved under your name at the top)