|21st September 2014, 11:38 PM||#1|
My_Ref Fremen Edition GB (fifth run)
From the last run I've had several requests for boards, it's possibly time for a fifth run.
This run boards will have a position for a film bypass for C9.
Now the usual opener:
The My_Ref Fremen Edition is a variation of Mauro Penasa's My_Ref with this goals:
I've been authorized by Mauro Penasa to proceed with this My_Ref derivate amp.
You can find references on development, beta and release candidate here:
My_Ref Fremen Edition - need help on PCB evaluation - diyAudio
My_Ref Fremen Edition - Beta build/Fine tuning - diyAudio
My_Ref Fremen Edition RC - Build thread - diyAudio
My_Ref Fremen Edition - Build Thread
On my Google Drive you'll find:
And a YouTube video on SMD soldering of FE modules.
Actual price will depend on number of partecipants/kits, the Group Buy is about PCBs only
Approximate prices (one kit = 2 PCBs, PayPal fees and 1€/kit donation to DIY audio included):
10-14 kits 38€
15-19 kits 30€
20-24 kits 26€
25-29 kits 24€
30-39 kits 22€
40-50 kits 20€
100 or more 16€
Shipping prices will be (for each kit, for 2 kits add 1€, more than 2 will be calculated):
Rest of the world apart Oceania 13€
PCBs (circa 12 x 10.5 cm) will be blue, 2mm tick, 2 Oz/70um copper, gold plated, made in Italy.
One transformer 160VA-300VA will be needed for each board (monoblock design)
BOM cost is around 76€ per board (premium industrial BOM) which can be lowered to 52€ (On a budget BOM).
Build a complete amp (premium industrial BOM with case, connectors, cabling. etc.) will cost around 450€ and up.
If interested please PM me your PayPal associated email address and fill your nickname, country (2 letter code) and number of kits on the Google Spreadsheet (please leave blank the 'PP account sent' column, I'll fill it so you have a feedbakc that I've received your data)
October, 27 price will be fixed and I'll start sending PayPal Invoices, all payments are due by November, 2.
Until PCB order from manifaturer is done it will be possible to partecipate to the GB
Boards will be ordered by November,3 and should be in my hands in 15-20 days, then packaged and shipped in a week or so.
Mauro Penasa for his great design and kind permission
LinuxGuru for his help on new compensation
Luka for the LM318 PS initial design
KSTR for the new C9, R10 arrangement.
Soongsc, Marce, Sebaastian, KSTR and Metal for help on PCB design
BMCBob for all support, tests and reviews
Images of boards from the first GB:
ClaveFremen "Bailando Salsa en el Sietch" - My_Ref Fremen Edition Group Buy 10th Run.
Last edited by ClaveFremen; 1st May 2015 at 10:14 PM.
|23rd September 2014, 07:49 PM||#2|
5 kits so far.
Please, after filling in the Google Docs spreadsheet and sending PP info, post also here.
|26th September 2014, 01:20 PM||#5|
|26th September 2014, 04:43 PM||#6|
Join Date: Sep 2010
Location: Cagliari - Sardinia
I could adopt the same solution on my PCB. You advice this intervention?
I want to inform you but I'm buying for a capacitor C9 a Black Gate, and perhaps, therefore, would not need the bypass.
I also purchased the two ERO 1834 (10 nF and 150 pF) and the Riken for R10.
Many Thanks Dario
|26th September 2014, 07:53 PM||#7|
I've added the bypass position to overcome the scarcity of BGs.
Buy the BG only if price is reasonable, prices on eBay are mostly absurd.
When using a BG a bypass is not necessary, sometimes even detrimental.
|29th September 2014, 01:48 AM||#9|
Join Date: Jan 2008
Location: Chelsea, Michigan
I'm in. again.
I've got a few of the earlier boards to build yet, but I think I want to play around with R10 and the added pads for the Caddocks will help. Besides, I eventually want to be using FE's for each stage of an active crossover. That means I'll need several boards.
For all of you who haven't built one of these yet, jump on board. This is a great amp with lots of helpful people behind it.
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