|1st September 2013, 01:16 AM||#1|
not politcally affiliated
GB for Salas Folded Simplistic Phono PCB
I am proud to offer the Salas Folded Simplistic Phono Preamp PCB.
In Salas words :
"It uses a folded cascode input stage, passive RIAA filter, common source second stage, a source follower buffer with constant current bias. No form of feedback between stages is employed.
It can be made for different voltage gain. Input load is switchable. Suitable for LMC-MC-HMC-MM. (see build guide)
There is an official double layer PCB available for it that carries two channels and two MOSFET
It comes in one piece and it is pre-grooved to be breakable into separate channels."
The PCB is available for $52USD (~39 Euro).
The shipping costs is 8.00 USD for USA and Canada - 13.00 for Overseas shipping with Minikit and PS RAW Board. First class packaging available (some countries have tracking, most do not) starts at 24.00
Accepting USD PayPal only.
This project took significant development costs and a long time cycle. It will probably be a limited edition for one or two runs depending on demand. Good components and nice boxes for it will be money well spent judging from my prototype's sonic results.
Minikits will be made available as well and will contain limited parts - resistors and transistors for the Shunt supply portion and the RIAA caps VISHAY MKP 1837.
Please subscribe to this thread as well as check out the sign up spread sheet for "Salas Board" in my signature.
Here is the minikit details.
It is designed to allow for a bulk packaging of parts to get transistors and resistors for the power supply, and some small parts for the phono section.
Price is $64.00
3MM /Green/Red LED 20ma D1-4 10/20
BC560C Fairchild High HFE (600 typical) Q3y 6
2SK117GR Q2,Q3,Q5 10
BC550C Fairchild HIGH HFE (600 typical) Q4x 6
Vishay CFP 15R 100PPM metal film 2-3W R1x 2
VISHAY - MRS25 Series .6W 6.2K 50ppm R3x (high IDSS) 2
MRS-25 9.1k R3x 2
MRS25 120R R2x,R4x 4
MRS25 33.2R R6x 2
MRS25 27.4R R6x (high IDSS) 2
Welwyn MFR4 1R2 1% 50ppm
Vishay CFP 1.2K 100ppm 2W R13 2
Bourns 3296Y 1K VR1 2
Bourns 3296Y 2K VR2 2
IRF9610PBF Q1x 2
IRF9530PBF Q6x 2
4 position SPST 2
KEMET 0.1uf 100v 5% C3x 2
Vishay MKP-1837 .047 1% C1 2
Vishay MKP-1837 .015 1% C2 2
Wima 150pf 2.5%, plus 100pf sytrene cap C2Y2+2 (to trim to liking)
2SK369BL matched pair - $10.00usd
2SK369BL matched quads - 25.00usd (LOMC Only)
2SK170BL's - 31 usd
Q4-Q5 and Q6 are now going to be custom selected with different R11 (for Q5) and R8 (for Q4). These will help adjust the currents to any matched pair of 2SK170BL.
This is to make better use of existing stock of 2SK170BL without any performance hit. R11 and R8 resistors are now included with the 2SK170BL sets.
PRP RIAA Resistor 8usd for 4 resistors, enough for stereo set of boards
PRP 9372 1/4W 25ppm .1% 47K -2 (R14)
PRP 9372 1/4W 25ppm .1%6.754k -2 (Replaced R5-R6)
Here is the new RAW PSU that people have requested. Use this before the Folded Boards Shunt Supply as described in Folded Guide.
These are 15.00 each.
Salas Boards GB 2019 #2 Sign Up Sheet Click Here to Sign Up! | M2C Boards, PS and transformers Available PM
Last edited by Tea-Bag; 9th May 2018 at 04:54 PM. Reason: added minikit
|1st September 2013, 09:25 AM||#3|
I' m in for a board too.
"Without deviations from the norm, progress is not possible" - Frank Zappa
|1st September 2013, 10:09 AM||#6|
Join Date: May 2010
I m in for two boards and minikits. thanks a lot for doing this guys
Too many projects... so little time...
|1st September 2013, 10:13 AM||#7|
Join Date: Sep 2009
Location: Catalonia - Europe Union
Add myself for one board & one minikit
Last edited by merlin el mago; 1st September 2013 at 10:15 AM.
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