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SYMEF PCB

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#43
I wanted to open a poll for this.

Assume that you were interested in these PCBs, kindly indicate what would your contribution be to offset the cost of production per PCB 😀

1. Free
2. $3
3. $5
4. $8
5. $12
6. $15
7. $20
8. $25
 
#44
SYMEF Amp PCB's

I'm interested in the following PCB's for the SYMEF Amps:

Type 1 PCB: Output Transistors not under PCB <---- 4 PCB's
Type 2 PCB: Output Transistors under PCB <---- 4 PCB's
Type 3 PCB: TO3 <---------------------------------- 4 PCB's
Type 4 PCB: SMT <---------------------------------- 2 PCB's just to try working
with SMT

Take care.😀
 
#45
kindly noted 😀

mrsavage said:
I'm interested in the following PCB's for the SYMEF Amps:

Type 1 PCB: Output Transistors not under PCB <---- 4 PCB's
Type 2 PCB: Output Transistors under PCB <---- 4 PCB's
Type 3 PCB: TO3 <---------------------------------- 4 PCB's
Type 4 PCB: SMT <---------------------------------- 2 PCB's just to try working
with SMT

Take care.😀
Click to expand...
 
#54
The list

Member
mrsavage-> Type1: 4, Type2: 4, Type3: 4
passive420-> Type1: 4, Type4: 4
evette->Type1: 6, Type2: 6, Type3: 6
Total-> Type1: 14, Type2: 10, Type3: 10, Type4: 4

We are approaching the numbers where the type1 might get printed first 😉 . Am targeting $8 or $12 per 2oz PCB with the right numbers 😀.
 
Last edited:
#55
Hi Harrison,

Are you planning a Lateral Mosfet version of this amp? As much as I love the mid high and lower registry of the Symef I built, I somehow think it has its limitations on the upper registry and not faulting your design but mostly due to the limitation of bipolar devices in this area. Mosfets have a tiny bit less presence in lower registry but make it really good in the upper one.

Those are my observations after building many different amps. I read a bit about this after my findings and I'm not the only one who observed this phenomena. However, I must admin, the control you have on the lower registry is tremendously good.

Thanks
Do
 
#56
Hi Pinnocchio,

Not yet 😉. Thanks for your observations. We could examine the actual characteristics of that upper registry in the SYMEF thread. The findings might be interesting.

kind regards,

Harrison.

pinnocchio said:
Hi Harrison,

Are you planning a Lateral Mosfet version of this amp? As much as I love the mid high and lower registry of the Symef I built, I somehow think it has its limitations on the upper registry and not faulting your design but mostly due to the limitation of bipolar devices in this area. Mosfets have a tiny bit less presence in lower registry but make it really good in the upper one.

Those are my observations after building many different amps. I read a bit about this after my findings and I'm not the only one who observed this phenomena. However, I must admin, the control you have on the lower registry is tremendously good.

Thanks
Do
Click to expand...
 
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