I ordered another just for the sticker 😀
That would be great if you carved out some time to check out those chokes.
Thank you for getting the boards back in stock, the MoFo is a fun project.
Regards,
Vunce
Looks great Drpro!!
There is such a small voltage drop with the Allo capMx you might not need the dc voltage booster.
There is such a small voltage drop with the Allo capMx you might not need the dc voltage booster.
Also David, I used a 12K carbon resistor at location R10 on the Aksa LP daughter boards to use with the MoFo.
Yes, I got two sets of DB from X, so one will be built with the 12K and the other closer to 4K. I have a pair of F4s, currently using a BA-3 and ImPasse to drive them. Just one more tool in the HiFi closet to play with!!
That’s a nice looking setup DrPro! Love the aluminum channel setup. What brand of extruded channels are those? I used to use Bosch Rexroth and found that they were nice because the distributor would make CAD drawings to my hand sketch then cut and deliver the whole thing with all angle brackets nuts and screws - pay only for materials. Only needed a wrench and screwdriver to assemble it as if it were a kit. Regarding the DC booster - nice to be able to dial in the voltage you want - in effect the PSU becomes a regulated supply. Useful for testing effects of Vcc dual abyield from say 18v to 28v? Assuming your heat removal is up to the task.
How are you coming along on the Aksa Lender pre for driving the MoFo?
How are you coming along on the Aksa Lender pre for driving the MoFo?
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X I am using the product from T-Nutz. There shortest precut length is 12" so that set my dimensions. The only cutting I did was for the corner pieces which are 9" tall. This company's product has been more affordable than some of the other choices out there. Only issue is a limited product line compared to 8020. The rubber feet I am using came from 8020.
For the MoFo do the DC boosters need to have a heatsink?
The AKSA pre is coming along also.
Thanks
David
For the MoFo do the DC boosters need to have a heatsink?
The AKSA pre is coming along also.
Thanks
David
I have finally gotten both channels up and running with no magic smoke. Playing a little Miles from a DAP, probably only 2v or so, volume low but sounds nice.
Question for those folks using the Hammond 193V in their builds. The internal resistance of mine measured 1.36 ohm, so figuring 2.5 amps for bias, I am showing a voltage across the inductors of about 3.5vdc.
Thoughts appreciated.
Thanks
David
Question for those folks using the Hammond 193V in their builds. The internal resistance of mine measured 1.36 ohm, so figuring 2.5 amps for bias, I am showing a voltage across the inductors of about 3.5vdc.
Thoughts appreciated.
Thanks
David
I had similar measurements that appeared at odds with the tolerances noted on the datasheet. I stick a meter in series with the supply and measure current draw. I think this is a valid way to measure bias.
Hi David,
Just wondering if you accounted for the resistance of the test leads?
Cheers,
Dennis
Hi David,
My 193V’s measured 1.3ohms also. I set mine to 3.1vdc so a tad under 2.5A bias.
How hot are your heatsinks getting?
My 193V’s measured 1.3ohms also. I set mine to 3.1vdc so a tad under 2.5A bias.
How hot are your heatsinks getting?
I didn't count for the lead resistance, Dennis.
So your 193Vs probably came out of the same batch I bought from Mouser. The heatsinks are just a nice hand warmer warm. However the cap MX little heatsink was quite toasty, so I have replaced them with something a bit larger, still hot but hopefully not in the dager zone.
So your 193Vs probably came out of the same batch I bought from Mouser. The heatsinks are just a nice hand warmer warm. However the cap MX little heatsink was quite toasty, so I have replaced them with something a bit larger, still hot but hopefully not in the dager zone.