Hi,
i have read in the (chaos) threads about the Blame Amp a year ago. I was interested in the Blame ST Amp and wanted to build this Amp. I made some pcb's with KiCad and in the last days i build the Blame ST. With my pcb you can also build the Blame ES, components are marked on the pcb. For the known problem with one BC546 (Q6) you can put in a 1K resistor and a diode BAV21 when building an ES Amp.
The pcb is similar to the XRK FH9 and many others, transistors on the pcb side and bias transistor underneath the pcb. The old pcb's, shown in the original thread, were rather large,
now the size is 99 mm x 74mm. For heat release on the heatsink this version is better i thought , but the amp needs not much cooling. The biasadjusting is very stable from power on. After 2 hours not much heat on the heatsinks. If i had known i had choose a smaller housing.
My Blame Amp is powerd by an 500 Watt Connex SMPS, +- 35 Volt, the bias is set to 70 mA. The amp sounds very good, doing everything right. I use the toshiba 2SC5200/2SA1943.
Perhaps i give some MJE transistors a chance later.
If someone is interested he can get the gerberfiles over PM. Dont know if it is good to post here, or do you see no problem with that ? The original thread is 10 years old.
Perhaps Carlos, Destroyer X, had been happy to hear from a Blame Amp build in Germany...but he died month ago...RIP.
A homage to Carlos building his Amp...
Peter
i have read in the (chaos) threads about the Blame Amp a year ago. I was interested in the Blame ST Amp and wanted to build this Amp. I made some pcb's with KiCad and in the last days i build the Blame ST. With my pcb you can also build the Blame ES, components are marked on the pcb. For the known problem with one BC546 (Q6) you can put in a 1K resistor and a diode BAV21 when building an ES Amp.
The pcb is similar to the XRK FH9 and many others, transistors on the pcb side and bias transistor underneath the pcb. The old pcb's, shown in the original thread, were rather large,
now the size is 99 mm x 74mm. For heat release on the heatsink this version is better i thought , but the amp needs not much cooling. The biasadjusting is very stable from power on. After 2 hours not much heat on the heatsinks. If i had known i had choose a smaller housing.
My Blame Amp is powerd by an 500 Watt Connex SMPS, +- 35 Volt, the bias is set to 70 mA. The amp sounds very good, doing everything right. I use the toshiba 2SC5200/2SA1943.
Perhaps i give some MJE transistors a chance later.
If someone is interested he can get the gerberfiles over PM. Dont know if it is good to post here, or do you see no problem with that ? The original thread is 10 years old.
Perhaps Carlos, Destroyer X, had been happy to hear from a Blame Amp build in Germany...but he died month ago...RIP.
A homage to Carlos building his Amp...
Peter
