mahdi8

There is no group order at the moment. Only option is to go to a pcb maker with the design and get your own

And here is the finished build. By far the most transparent I amp I have ever tried. Kudos to KG its a brilliant design

Coming from 70 holes at the top and bottom only which running at a high 82 degrees C. I've drilled much more. Top and bottom now has total of 118 holes and the sides has total of 48 holes. Now the hottest transistor running at 65 degrees C. Pretty happy with that. It was lot of drilling. I almost warped the top and bottom plates from the drilling. Now it's just a matter of resurfacing and repainting the case now. Cos lots of holes on stainles steel look like a cheese grater lols

Sounds Brilliant. For me it's as detailed as it's get from any amp. and scales well with better DAC. compared with my old amp moving to a better DAC gives a more noticeable difference using Dynahi

I just run it with the bottom case open for now. Most of the heatsink is running under 70 degress only one heatsink is showing 80 degrees. I might adjust the bias again but for now should be all good running it this way. until I have time to redo the case

Yikes 323 holes? Don't think I will have the patient to drill that many. I'm considering 3d cutting mdf so i cam easily make lots of holes and painting it for the top part and bottom. Not not sure about the integrity of the mdf after cutting too much holes in it

Hi guys I'm finalising my case ventilation. I have put 28 holes with 1.5cm diameter each on the top and bottom of the case and the amp is still running to hot for my liking. I measure the heatsinks is around 85-90 degrees Celsius. That's after the amp running for 2 hours What's the normal heatsink temperature for the on board heatsinkheatsink version? BTW the case has 2 s22 power and 2 amp board.

Last time the offset went that high I fried all the npn and pnp transistor

Does anyone know where if there is grounding guide write up for the Susy dynahi? Or this b22 grounding guide will work with the dynahi?http://www.amb.org/audio/beta22/wiring.shtml

So I'm still trying to figure out where the ground noise is coming from. My setup is 2 case: metal case housing amp and power supply and plastic case housing the transformer. DC power plug, trs jack are isolated from case ground. The volume pot are not isolated from case ground. Should the rca be isolated or connected to the case ground?

Referencing you balanced protector board http://gilmore.chem.northwestern.edu/boards/protect3.zipwhich resistor should I change to reduce the trip point to 0.25V?

not sure what hennyo style is BTW Looks like a protector board or delay board is really necessary with my build on switch on and off the offset jumps to 1V for 1 second before it stabilize to 10-15mV after 3 second

drill away it is

Top and bottom? So top only not enough? I'm thinking 20 holes around 6mm possition parallel with the heatsinks would that be enough?

Thanks I'll try that. BTW been using the amp with the case close for an hour it does get quite hot the caae is barely touchable now. The case is sealed full aluminum with no ventilation. Looks like I need to drill holes for ventilation. Or is it okay to leave it as it is. Considering the full aluminum case will act like a big heatsink. The case is 3u rack case but I am putting 2 amp board and 2 sigma22 board in it. Soo its packed. I put the transformer in another case. Will the temperature hike effect the bias and offset? Can't really check it with the case closed