Hehe, then you have to hurry, because the "owner" (it's me) knows where you live...
Can you explain a bit about the parts, and share some inside pics?
OK the parts:
Fets:
IRF240/9240 from Vishay. These IRF can be replaced by better sounding stuff!
You have send me matched mosfets. I measured them and tossed em back in the bag. I chose 4 pairs of my own pair-matched IRF's. the pairs are matched very well under heat. The N AND the P Fets are close together also. I made screeshots from the analyser 4 you.
The 16 caps are rated for 22.000 / 63Volts / 125 degrees, suprising small and very heavy. These are Mundorf caps, and, boy, are they expensive.
I talked allready about the rectifiers; MUR3020 doublediodes - the real fun stuff.
Connecting cables:
Connecting the Speacon to the rectifiers 4mm² this Thomann Elefantcable.
Connecting from Rectifiers to Caps 4mm² Lithiumbattery superflexible silicon-cables.
Then connecting from Caps to the Powerboards each polarity 2,5mm² (you cant solder 4mm² to the boards this will be a mess)
Output to Speakerterminals:
Van den Hull 4mm² CS14 (This cables my favorite, i equiped my internal speakercabling with all Van den Hull - Amen!)
Ah, the Speakon connector from the Transformer-case ambylical cord to the amp is quite tricky. It reads 40amps - i doubt it. As soon as i do the powertest on this big test-heatsink i will see whats happening beyond 8 amps at 20 Hz. I am electrician - i break parts.
On the Transformerside nothing to write home about. This cable, Elefant 8x4mm² superflexible is the real deal for such a project. The audiophonics transformer likes to humm i little, you can't hear it case-closed in hearing position.
The PLA Parts WILL melt at 78 degree celscius, its the transitionpoint for this material, at 55-60 degree it is stable. I really regret not having the copper parts. Anyway your amp will blow you away. Any Class-D fanbois here? Hold my beer.
The chassis is a very nice work from french audiophonics shiped from china.
Closing this i like to say that all this plan was depending on the powertransmission over 1 cable 1meter long, from transformer to the amp. We are talking here 4 times 24Volts at serious amps 🙂 It took me weeks to find the cable and the connector. I mean, look at the capacitance - make them sing i though. And since you pay the bills i thought: Hey, Amps.
Now this amp will have to burn in. The needle needs to be activated and illumination applied. Some Makeup-stuff
and voilà.
F5T
Not to forget that the custom toroidal tranny is 1.25 kVa, with four windings (makes it close to a dual mono PSU).
Not to forget that the custom toroidal tranny is 1.25 kVa, with four windings (makes it close to a dual mono PSU).
Ah..yes.. the problem with the space inside the amp-chassis.
Since there are 16 caps, gold on black sleve, decision was made to place them in a row - V16 engine. Then the rectiviers had to go SOME-where, the choise was easy to make, after some 6 weeks and even more bottles of fine italian redwine i gave in to hide them just slighly under the capacitancebank. The monting-riggs for the diodes had to be constructed and printed, this turned out good. All Caps-banks and rectifier-riggs are mounted on rubberpads - we dont want vibrations on our chassis that make us no-sleep at night 😉
Hard to beliefe that a pile of Non-wife-factor-parts soldered together make fine music.
Since there are 16 caps, gold on black sleve, decision was made to place them in a row - V16 engine. Then the rectiviers had to go SOME-where, the choise was easy to make, after some 6 weeks and even more bottles of fine italian redwine i gave in to hide them just slighly under the capacitancebank. The monting-riggs for the diodes had to be constructed and printed, this turned out good. All Caps-banks and rectifier-riggs are mounted on rubberpads - we dont want vibrations on our chassis that make us no-sleep at night 😉
Hard to beliefe that a pile of Non-wife-factor-parts soldered together make fine music.
who can find the error?
THAT is a classic, who can tell?
ok this was BEFOR 1st powerup.
THAT is a classic, who can tell?
ok this was BEFOR 1st powerup.
Attachments
@elvenears - amazing build!!! Well done! 
@Alfetta87, congratulations on what will definitely be a one-of-a-kind amp!
@Alfetta87, congratulations on what will definitely be a one-of-a-kind amp!
F5T: parts
The PSU PCB's are from the DIY store, and they carry... 16 capacitors (8 per channel, it's a dual mono) of 22000uF, that's a hefty 352000uF!
All Mundorf.
The PSU PCB's are from the DIY store, and they carry... 16 capacitors (8 per channel, it's a dual mono) of 22000uF, that's a hefty 352000uF!
All Mundorf.
NPXP
@elven ears,
Amazing build and execution, I love the custom organization of your wirings and custom extrusions you placed on the heatsink for the F5 boards. Beautiful work.
My build is much more rudimentary but I do use an 800VA Toroidy with (4) 20V secondaries for ease of wiring and nearly a dual mono setup.
Best,
Anand.
@elven ears,
Amazing build and execution, I love the custom organization of your wirings and custom extrusions you placed on the heatsink for the F5 boards. Beautiful work.
My build is much more rudimentary but I do use an 800VA Toroidy with (4) 20V secondaries for ease of wiring and nearly a dual mono setup.
Best,
Anand.
Attachments
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> The chassis is a very nice work from french audiophonics shiped from china.
So now they are openly importing and selling copied Pass cases in the EU !!!
Patrick
So now they are openly importing and selling copied Pass cases in the EU !!!
Patrick
I didn't even saw that post .....
evidently selling in EU :
DIY Aluminium Case with Power Indicator and Heatsink 396x360x195mm - Audiophonics
evidently selling in EU :
DIY Aluminium Case with Power Indicator and Heatsink 396x360x195mm - Audiophonics