HI All , some really great information on this thread , thanks to the group for the support and project as a whole. I am just starting to put together the bits fo r the BOM and I have a quick question about the input impedance options of 22k and 10k. I wonder which would be best for me , I have a DCB1 Hypnotise that I built and will be using , I have no plans to change this for the foreseeable (yeah I know!).
As I understand it I should be looking for about 10-20 times the impudence of the pre for the power amps , so anyone have a suggestion? I Could measure the DCB1 but am unsure how to do this so if you could lmk how to do this instead that would be great.
Thanks!!
As I understand it I should be looking for about 10-20 times the impudence of the pre for the power amps , so anyone have a suggestion? I Could measure the DCB1 but am unsure how to do this so if you could lmk how to do this instead that would be great.
Thanks!!
Assuming I found the correct circuit, it looks like the buffer output impedance is well under 1k, so you should be good with 10k input.
Burning Amp Festival this Weekend!
Hi Guy's,
I wanted to share some exciting news with all of you! Our talented Wolverine team member, Neil (@neilshop), will be attending the Burning Amp Festival this weekend at the Petaluma Community Center in Petaluma. Neil will be bringing along his impressive collection of gear and will be setting up his equipment on Saturday before joining in on the other activities. On Sunday, you'll also have the chance to witness his equipment in action.
Here's what Neil will be showcasing:
1. His Quad Amp Wolverine Build - this highly regarded project that has captivated many DIY enthusiasts when it firstcl appeared at the Burning Amp Festival last year.
2. The "Beast" - An 8 pair Amplifier that Neil has been collaborating on with @jjs Jeremy. This new creation is sure to make waves in the DIYAudio community.
3. Brand-new Chassis - Designed by Neil himself, this chassis is not only super special, but it's also fresh off the assembly line. Prepare to be impressed!
4. Pre-amplifier and Speakers - Neil will also have a pre-amplifier and a set of speakers on hand to demonstrate both amplifiers.
It goes without saying that Neil is not only incredibly talented but also a wonderful person to interact with. If you're attending the Burning Amp Festival and have any questions or would like more information about Neil's projects, he would be more than happy to have a chat with you.
So, don't miss out on this fantastic opportunity to meet Neil (@neilshop) at the Burning Amp Festival this weekend. Drop by his setup, explore his gear, and engage in meaningful discussions with a fellow DIYAudio enthusiast.
See you all there!
Neils Original Post in the development thread is here. Incase you don't know, Neil was heavily involved in the testing and building of the first Wolverine prototypes and was the first member of the Wolverine team to have a completed Wolverine amplifier in a chassis.
Those were certainly special times.
Hi Guy's,
I wanted to share some exciting news with all of you! Our talented Wolverine team member, Neil (@neilshop), will be attending the Burning Amp Festival this weekend at the Petaluma Community Center in Petaluma. Neil will be bringing along his impressive collection of gear and will be setting up his equipment on Saturday before joining in on the other activities. On Sunday, you'll also have the chance to witness his equipment in action.
Here's what Neil will be showcasing:
1. His Quad Amp Wolverine Build - this highly regarded project that has captivated many DIY enthusiasts when it firstcl appeared at the Burning Amp Festival last year.
2. The "Beast" - An 8 pair Amplifier that Neil has been collaborating on with @jjs Jeremy. This new creation is sure to make waves in the DIYAudio community.
3. Brand-new Chassis - Designed by Neil himself, this chassis is not only super special, but it's also fresh off the assembly line. Prepare to be impressed!
4. Pre-amplifier and Speakers - Neil will also have a pre-amplifier and a set of speakers on hand to demonstrate both amplifiers.
It goes without saying that Neil is not only incredibly talented but also a wonderful person to interact with. If you're attending the Burning Amp Festival and have any questions or would like more information about Neil's projects, he would be more than happy to have a chat with you.
So, don't miss out on this fantastic opportunity to meet Neil (@neilshop) at the Burning Amp Festival this weekend. Drop by his setup, explore his gear, and engage in meaningful discussions with a fellow DIYAudio enthusiast.
See you all there!
Neils Original Post in the development thread is here. Incase you don't know, Neil was heavily involved in the testing and building of the first Wolverine prototypes and was the first member of the Wolverine team to have a completed Wolverine amplifier in a chassis.
Those were certainly special times.
mainframe99:
Stuart has been incredibly helpful so far, and I’m making slow progress figuring out what’s gone bad on one of the two Wolverine channels. I had to take a break in the repair effort — initially because my wife and I were slated to fly cross-country so I could attend Burning Amp. Unfortunately, a death in the family forced us to cancel that long-awaited trip, and we’re now in NYC for the funeral. The good news is that I’ll be home in a few days, anxious to complete the diagnosis and effect the repair. My parents are anxious as well — they are listening to music on the stereo I built for them 18 years ago and they’re no longer impressed by it. They want their new rig back.
Stuart:
I’ll be in touch soon. Thanks again for the continued support!
Regards,
Scott
Stuart has been incredibly helpful so far, and I’m making slow progress figuring out what’s gone bad on one of the two Wolverine channels. I had to take a break in the repair effort — initially because my wife and I were slated to fly cross-country so I could attend Burning Amp. Unfortunately, a death in the family forced us to cancel that long-awaited trip, and we’re now in NYC for the funeral. The good news is that I’ll be home in a few days, anxious to complete the diagnosis and effect the repair. My parents are anxious as well — they are listening to music on the stereo I built for them 18 years ago and they’re no longer impressed by it. They want their new rig back.
Stuart:
I’ll be in touch soon. Thanks again for the continued support!
Regards,
Scott
Are Q107 and Q108 installed before testing? It just says to install q103, with no mention of the other two on the preferred order. Also, C109 is listed twice on page 24.
Yes, The driver heat sink should be installed with Q107 & Q108 attached prior the the Pre-driver heatsink to allow for good access to the other parts afterwards. I see that its noted there at point 15.1 however your right its not listed in the installation order. Sorry I missed that. I will review the build guide later and also remove the duplicate entry for C109.
Thanks for picking up on those issues. 👍
Sorry, I should have made that clearer, that's for the EF3-3. I am revising the build guide now so there should be an update out soon.
Hi Guys,
I have updated the Build Guide, Current revision is now 40.
Revisions are noted at the end of the document.
Please check your Dropbox folder or post #1 of this thread for the latest version.
Thanks for your input @MilkyChance 🙏
I have updated the Build Guide, Current revision is now 40.
Revisions are noted at the end of the document.
Please check your Dropbox folder or post #1 of this thread for the latest version.
Thanks for your input @MilkyChance 🙏
@deerhunt congrats with the build. And now that we been talking about e.caps a few posts back I must say that those RIFA's are about as good as it gets. Just sold two last week I had in my leftovers, exactly the same value as yours. Very high quality(!), not to mention the pricetag on those now sold as KEMET PEH200!!!!! Auchh 😀
@deerhunt Congrats! Might I recommend some Noalox with the connections to the aluminum plate (I assume it's aluminum). Aluminum oxidizes, and the oxide is not a good conductor. Many a mobile home has met its demise from aluminum conductors and screw terminals. The connections to the plates can carry high currents.
I think copper plate would be a better choice.
I think copper plate would be a better choice.
@hcpower Yes, those Rifa are nice. Actually leftover from earlier projects where they didn’t fit in the box. Looking at production year I think they are from 2007. Not so expensive then😊
Started them softly and they seem to format, keeping voltage very good now!
@mhuth1776 I agree, should use pure copper instead. Noticed that the aluminium was not conducting well. Perhaps oxidation or a thin layer of lacquer. I have to give it some sanding before use.
Started them softly and they seem to format, keeping voltage very good now!
@mhuth1776 I agree, should use pure copper instead. Noticed that the aluminium was not conducting well. Perhaps oxidation or a thin layer of lacquer. I have to give it some sanding before use.
@mainframe99 it’s just some PA-plastic that I use to keep the heatsinks up. I have a 5U chassis.
If Wolverine beats my reference amp I might go for mono blocks from Hifi2000. Those look nice!
If Wolverine beats my reference amp I might go for mono blocks from Hifi2000. Those look nice!
Please do keep us informed! I'm almost to the testing phase with my build and love hearing impressions to build the excitement for a finished project. 🙂
Be careful with this, as copper and aluminum are far apart on the anodic index, the aluminum of the capacitor terminals might start to behave as sacrificial anode, taking over the corrosion that would normally occur on the copper plate.
https://en.wikipedia.org/wiki/Galvanic_corrosion