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WTB: F4 PCB boards

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#481
nycavsr2000 said:
(4) 1N4148W-FDICT-ND DIODE SWITCH 100V 400MW SOD123 0 0.44000 $1.76
Click to expand...

Is a SMD Diode, 🙁

I ordered all this and they sent me SMD diodes, BAH, now i need to order more of the non surface mount, DO you have the part # for digikey?

Other than that im almost set to go 🙂

Jase.

p.s thanks for your help nycavsr2000
 
#487
For those who have built, or are building, the F4, are you using 2sk170 and 2sj74? Is there any schematic adjustment need to be done?

Other than the chasis, I have everything I need to build a pair of balance mono-block. Actually, I have made a choice between two heatsinks...
 
#488
niner said:
For those who have built, or are building, the F4, are you using 2sk170 and 2sj74? Is there any schematic adjustment need to be done?

Other than the chasis, I have everything I need to build a pair of balance mono-block. Actually, I have made a choice between two heatsinks...
Click to expand...


Right on, post some pictures 🙂 Ill post a few of my chassis, im about 3/4's way done just need to order diodes and i'm ready to fire it up 🙂

Ive showed a few of my friends my chassis design and they all like it 🙂

Jase
 
#493
jleaman said:



Im thinking about ordering 8 more and 16 more mur brown diodes and 2 more psu board from peter daniel, so i can put them into my aleph Mini's.
Click to expand...

Best of luck to you--hope you're having a blast.

This will be my first attempt at using the Mur diodes... hope I hear a difference, they aren't exactly cheap!😱 I purchased 16. If they are great, I'll probably do the same as you. For now, I'll stick with the F4s; I'd like to have about 4 stereo pairs.

To keep things unusual, I'm going to try my project with IRF630 & 9630 fets. These fellows have about half the input capacitance of the 240s and can handle 72 watts. With the light load the F4 demands of the fets, I think this could work. If it doesn't work, I'll slip in NP's suggested chip.🙂
 
#494
carpenter said:


Best of luck to you--hope you're having a blast.

This will be my first attempt at using the Mur diodes... hope I hear a difference, they aren't exactly cheap!😱 I purchased 16. If they are great, I'll probably do the same as you. For now, I'll stick with the F4s; I'd like to have about 4 stereo pairs.

To keep things unusual, I'm going to try my project with IRF630 & 9630 fets. These fellows have about half the input capacitance of the 240s and can handle 72 watts. With the light load the F4 demands of the fets, I think this could work. If it doesn't work, I'll slip in NP's suggested chip.🙂
Click to expand...


Thanks. However i do have this feeling that ill still like my 4 aleph mini's. I built 2 stereo blocks, and till this day i still like them. They are the SMD version, i love how mush clear sound i get out of something so small but yet little power.

Must put new resistors in pre-amp and then see if i like balanced, if not i have a pre-amp for sale 🙂 With very nice case and lots of goodies inside case 🙂

Jase
 
#495
I'm glad you like your mini's. I may try this....someday. Too many projects, not enough somedays.😀

I had a lot of fun with my ZV7-T, which has become the ZV7-bjcc (buffered--jfet--cascoded--choke loaded). This is the best sounding amplifier I've ever fabricated--so smooth, liquid. I learned to draft pcbs and order from a pcb fab house. So much fun!!! It operates on 20 volts and easily drives my JBL 2446 110db paper-mache horns. 😀 😀 😀

What would we do without Nelson?:att'n:
 
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