Go Back   Home > Forums > >

Solid State Talk all about solid state amplification.

Q17 - a QUAD405 audiophile approach to perfect sound
Q17 - a QUAD405 audiophile approach to perfect sound
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools
Old 23rd July 2021, 12:09 PM   #11
tvicol is offline tvicol  Europe
diyAudio Member
 
tvicol's Avatar
 
Join Date: Jan 2005
Location: Bucharest
Q17 - a QUAD405 audiophile approach to perfect sound
Hello Tim,

You may download kicad 5.99 for macbook from >>> https://kicad-downloads.s3.cern.ch/o...8d1dd1f8b0.dmg
for windows from >>>https://kicad-downloads.s3.cern.ch/w...eea-x86_64.exe

IXFK220N20X3 and IXTK120P20T are drop in replacement for FQA46N15 & FQA36P15 and stage A have enough juice to drive them both.
However, I personally fall in love with FQA46N15 & FQA36P15, these are very musical and involving. In the same time, FQA46N15 & FQA36P15, are able to drive very low impedances well below 2ohm. Your Wilson's will feel the power. :-)
But when we talk about power, there is always need for more. Just to praise myself, a 8 pair design is under construction, but I'll not make it public because is extremist in all ways.

Thanks & Regards,
Tibi
__________________
https://evotronix.eu
  Reply With Quote
Old 24th July 2021, 11:48 AM   #12
Tim1999de is offline Tim1999de  Germany
diyAudio Member
 
Join Date: Feb 2016
Location: Weimar
Hello Tibi,

Thank you for the link, I didn't find it with Google.

Fortunately I don't have Audio Wilson speakers , I just wanted to understand a bit more how you select the MosFET.

I can fully understand you not publishing your own amp. If it gets really eccentric, you should keep it to yourself, otherwise it just gives endless discussions without others really trying it out.
Nevertheless, I find your concept of the Q17 very interesting and will probably pre-order the parts. There are supposed to be semiconductors again in 2022.

Would you sell PCBs? Well, I'm not thrilled that you soldered on the OPA, but those are details.

One more thing, have you already tried the OPA1611? TI offers it as a reference for single OP.

Regards Tim
  Reply With Quote
Old 24th July 2021, 04:58 PM   #13
tvicol is offline tvicol  Europe
diyAudio Member
 
tvicol's Avatar
 
Join Date: Jan 2005
Location: Bucharest
Q17 - a QUAD405 audiophile approach to perfect sound
FQA46N15 & FQA36P15 make a very good pair.
I do not sell PCB's. You may drop the gerber zip file on jlcpcb and get 5 boards for under 10$ including shipping to EU.
On other side, I know that someone in Romania started to redesign the PCB and will conduct a GB. If here is any interest in this this project, I'll ask him to post here as well.

I have OPA1611 in one of my dac's and is sounding very good.
If you like it, use it.

Regards,
Tibi
__________________
https://evotronix.eu
  Reply With Quote
Old 24th July 2021, 08:55 PM   #14
thimios is offline thimios  Greece
diyAudio Member
 
Join Date: Aug 2009
Location: Agrinion
Q17 - a QUAD405 audiophile approach to perfect sound
Of I have upload zip file to Jlcpcb and only power supply is shown
Attached Images
File Type: jpg SAVE_20210725_241032.jpg (105.6 KB, 689 views)

Last edited by thimios; 24th July 2021 at 09:11 PM.
  Reply With Quote
Old 25th July 2021, 05:34 AM   #15
tvicol is offline tvicol  Europe
diyAudio Member
 
tvicol's Avatar
 
Join Date: Jan 2005
Location: Bucharest
Q17 - a QUAD405 audiophile approach to perfect sound
Inside Q17.zip, under Q17 directory, are another two zip files. One GerberQ17.zip for amplifier pcb and one gerberPS.zip for power supply.
Upload each zip file separately to jlcpcb. Jlcpcb will process one file at a time.

5 standard boards - 7.7$
audiophile boards with 2oz, enig, black finish - 92.68$

Regards,
Tibi
Attached Images
File Type: png Capture.PNG (222.2 KB, 580 views)
File Type: png Capture1.PNG (184.1 KB, 567 views)
__________________
https://evotronix.eu

Last edited by tvicol; 25th July 2021 at 05:59 AM.
  Reply With Quote
Old 25th July 2021, 07:36 AM   #16
analog_sa is offline analog_sa  Europe
diyAudio Member
 
analog_sa's Avatar
 
Join Date: Aug 2002
Location: Cascais
Q17 - a QUAD405 audiophile approach to perfect sound
Quote:
Originally Posted by tvicol View Post
a 8 pair design is under construction
No source resistors?
  Reply With Quote
Old 25th July 2021, 09:27 AM   #17
thimios is offline thimios  Greece
diyAudio Member
 
Join Date: Aug 2009
Location: Agrinion
Q17 - a QUAD405 audiophile approach to perfect sound
Ok i will try again.
Thanks Tibi
  Reply With Quote
Old 25th July 2021, 09:43 AM   #18
tvicol is offline tvicol  Europe
diyAudio Member
 
tvicol's Avatar
 
Join Date: Jan 2005
Location: Bucharest
Q17 - a QUAD405 audiophile approach to perfect sound
Quote:
Originally Posted by analog_sa View Post
No source resistors?
If you refer to 8 pair, there are source resistors 0,1ohm for each.
I divulge one more detail of my extremist Q17. Because these 8 pairs are not easy to drive, output is CFP. Now you have, almost, a complete image.

Regards,
Tibi
__________________
https://evotronix.eu

Last edited by tvicol; 25th July 2021 at 09:45 AM.
  Reply With Quote
Old 25th July 2021, 10:15 AM   #19
analog_sa is offline analog_sa  Europe
diyAudio Member
 
analog_sa's Avatar
 
Join Date: Aug 2002
Location: Cascais
Q17 - a QUAD405 audiophile approach to perfect sound
Тhank you. Appreciated.
  Reply With Quote
Old 25th July 2021, 12:06 PM   #20
hpavictor is offline hpavictor  Romania
diyAudio Member
 
hpavictor's Avatar
 
Join Date: Feb 2006
Location: Bucharest-Romania
Quote:
Originally Posted by tvicol View Post
If you refer to 8 pair, there are source resistors 0,1ohm for each.
I divulge one more detail of my extremist Q17. Because these 8 pairs are not easy to drive, output is CFP. Now you have, almost, a complete image.

Regards,
Tibi
Hello Tibi!

Quad17 with 8 pairs is very interesting, can you develop this project, please!
  Reply With Quote

Reply


Q17 - a QUAD405 audiophile approach to perfect soundHide this!Advertise here!
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
QUASAR a QUAD405 reborn design tvicol Solid State 207 19th October 2015 03:56 PM
Help: inductances in original Quad405. La Mer Solid State 13 8th December 2008 03:58 PM
Rebuilt Quad405 Problems Thomo Solid State 18 5th September 2007 10:37 AM
question about quad405. ary Solid State 8 25th July 2005 01:44 AM


New To Site? Need Help?

All times are GMT. The time now is 01:06 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 13.64%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright ©1999-2021 diyAudio
Wiki