Really good boards and with lots of options. I went for single 5U x 400 UMS tapped Dissipante chassis, +/- 52V rails, cascoded jfets, source resistor diodes fitted, stability caps and higher resistance gatestoppers, (I dont want it going unstable). I also fitted a manually resettable 70 degree C thermostat in line with the mains supply and fixed to the right heatsink at the top, its a big amp and I think safety is important. Doubled up feedback resistors to to 4 x 470R @ 3W by fixing another pair on the back of the board, jfet source resistors upped to 11R and P3 fitted and centred for now. 2000VA Airlink transformer with 6 x 82,000uF/63V Kemet ALS70 psu caps and 15mm thick aluminium ground block. Only running at 1amp bias so far and yet to tidy up wiring loop area etc, will then bias up to standard 300mV suitable for MUR3020 doides and a reasonable chassis dissipation of 240W. So far this amp has big authority in the sound and super bass, I like it!
Big thanks to Diy Audio Store and especially NP, these boards make phenomenal circuits so accessible.
A wonderfully designed amplifier! These PCBs are easy to solder, feature clear writing and proper spacing. The circuit is easy to assemble with some patience- follow the guide/watch NocturneVid66's assembly videos, and you're off to a great start!
This build is a dual mono (common star ground) in a 500mm dissipante chassis. Biased to 300mV, it runs at approximately 115 degrees F while never exceeding 10mV of offset across either channel. I highly recommend the available thermal pads from the site as well!! I chose to cassacode as well as put caps on the output boards. Cassacode if your needs demand it, skip the caps unless you have HF osculation. Power caps are 22,000uF x 16 = 352,000uF total at 63v rails; all wire is oversized, and I soldered screw-down wire terminals for connections between boards.
I live in the UK, the boards JFETS and MOSFETS arrived within two weeks. The F5 Turbo is my most challenging yet surprisingly straight forward build to date. I used a 5U Galaxy enclosure and 2 X 625 VA Transformers 24-0-24v bolted vertically to the front panel it’s not pretty but functional. Thus the two large bolts in the front panel. Thanks to 6L6’s build guide the build was straightforward. I opted for the V3 build without the extra transistor. Care has to be taken with the components as the MOSFETS and diodes are identical. The biasing is a slow process but was eventually biased to 350 mV. The guide has excellent instructions. It sounds superb and slightly more dynamic than the normally aspirated F5 which also sounds superb. Thank you Nelson, 6L6 and all the team at DIY Audio.
Bought the boards from DiyStore in April 2018 and it was going to be next months project..... I eventually got to it about month ago and build it without any problems. Using a 30v Antek 800VA transformer to give me 41V DC and currently have it biased at 0.330v and monitoring the heatsink temperature which seems to be fine and sitting at roughly 50deg Celsius. After a couple of hours of playing it with the Noir pre-amp the sound settled and it sounding absolutely stunning now… a project well worth it and highly recommended!!!
I’m planning to pair this with the electrostats I’m building, but that’s for next month.
It has everything I need plus a bit more for my F5Turbo build. Can't wait to gather the rest of the items that I need to complete my Mono Block versions of the F5T.
As always beautiful looking pcb's .Can't wait to get started on this new project . F5-Aleph-j now the turbo,all my pcb's came from the diyaudio store Perfect guides from 6L6 makes it a breeze to follow,id like to take this opportunity to thank Mr.Nelson Pass and all the input everyone has left in the forum i found a plethora of information that left me with out having to ask for any help .Again thank you all.soon to come pics i hope lol.
Excellent quality boards. Fast delivery.
All great.Thx
Second time purchase together with MOSFETs. And quickly delivered as usual half the earth around to little Norway 🙂.
Second time purchase together with PCBs. And quickly delivered as usual half the earth around to little Norway 🙂.
Received this pcb together with the F6 pcb and JFETs. The delivery is fast. The quality and design is excellent. The packing is very good. I have not built this amplifier yet. Thanks.
the pcb have arrived! they are of excellent quality, the shipping in italy was very fast! i can't wait to start building my f5 turbo!! thanks to all the staff!!!
1st class as usual. Always among the very best in communication and follow through.
High quality , fast delivery ,Thanks !
Unlike many of the other board sets on this site there are an incredible number of possible configurations available with these boards. Given the variability of skill and knowledge of your target market, I suspect that a high percentage of your users will have issues that will require a number of board removal and possible component replacement. While I will not dwell on the issues with the current hole size problems that have been documented in previous posts, it appears that the best approach would be to give an option for easy board removal for repair or inspection. I would suggest faston, which I found a wonderful configuration on the PSU boards that you currently offer.
Completed my F5 T.
DIY audio did a fantastic job communicating with me every step of the way.
Did have an issue with not enough standoffs (provided amount listed in description).
Quick response to resolve and got supplier involved.
For people considering building F5 T,
Chassis and back panel kit $500
Power supply $250
Amplifier boards and components $250
Cost me approx $1000
I also built an ACA amp while living in Korea and the DIY team was incredibly responsive to some of the shipping issues there.
top
Fast delivery!
Absolutely first class !! very happy....these are very well made pcbs....by any count.
Have not wired these up yet but can say they came superbly packed....clearly plenty of care and attention....has been paid to that aspect....I suspect the same care and attention went to part picking and matching.....so for Mosfets.....I think all is good.
Awesome service and communication
The community of enthusiasts is second to none.
Just finished soldering. Will see how good the transistors kit is
The boards are great quality and I like the way they have been laid out to allow different sized components. I do not have the time at the moment to build this amp nut hope to in the next few months. I highly recommend buying from here
Great service and great quality boards. Go ahead and buy from them. You won't regret it! Five stars!!! I'll be back....
Very fast ordering. Thank you.
Great boards, better quality than Ebay boards by a bunch! Well laid out and easy to read, gathering up my parts to start stuffing, will be ordering chassis soon, thanks a bunch!
I am building a F5 Turbo V3 mono block amplifier.
I ordered PCBs and the transistor kit from DIY Audio Store for shipment to me here in Australia.
All parts arrived promptly and in good condition and I can't wait to complete the build.
I have received other orders from DIY Audio Store and all have been received in perfect condition.
Thanks so much for a great experience.
Promt delivery!