After searching DIYA for suitable candidates, I have settled on designs by ASTX (Toni) for my upcoming HT and Living Room systems. I settled on Toni's designs for a number of reasons, mainly due to the fact that he has incorporated extensive protection and control features making them ideal for a family environment.
The living room system will be an active 3 (or 4) way, and the HT will eventually be 11.2 Atmos so we are talking quite a few channels...
To kick things off, I'm starting with a 2ch amp based off Toni's SA2014. This is a highly optimised amp with very low distortion combined with stability and reliability. Perfect. You can find more info here:
http://www.diyaudio.com/forums/soli...ormance-class-ab-power-amp-200w8r-400w4r.html
Most of the BOM components are on the way. PCB's and some hard to get components from Toni
I have access to a rather well equipped CNC machine shop and the necessary CAD/CAM software. Most of the chassis components will be machined from solid aluminium. Here is what I've come up with so far:
The living room system will be an active 3 (or 4) way, and the HT will eventually be 11.2 Atmos so we are talking quite a few channels...
To kick things off, I'm starting with a 2ch amp based off Toni's SA2014. This is a highly optimised amp with very low distortion combined with stability and reliability. Perfect. You can find more info here:
http://www.diyaudio.com/forums/soli...ormance-class-ab-power-amp-200w8r-400w4r.html
Most of the BOM components are on the way. PCB's and some hard to get components from Toni
I have access to a rather well equipped CNC machine shop and the necessary CAD/CAM software. Most of the chassis components will be machined from solid aluminium. Here is what I've come up with so far:
Attachments
Awesome design! Self made case from solid aluminium block! Wow!
I like your idea making the IPS accessible from outside and placed far away from toroid and AC!
I will jump in with help whenever it is needed.
Many thanks for the decision building the flagship SA2014.
Have fun,
Toni
I like your idea making the IPS accessible from outside and placed far away from toroid and AC!
I will jump in with help whenever it is needed.
Many thanks for the decision building the flagship SA2014.
Have fun,
Toni
Whooey! How unique this is!
And yes, I'm fully with you about Tony's elaborate designs in the amplifiers as well as in their protection and housekeeping environments.
Good luck to you and keep us up to date, please! Follow-up pictures are welcome to anybody here, I dare to claim 🙂.
Best regards!
And yes, I'm fully with you about Tony's elaborate designs in the amplifiers as well as in their protection and housekeeping environments.
Good luck to you and keep us up to date, please! Follow-up pictures are welcome to anybody here, I dare to claim 🙂.
Best regards!
Very nice drivers! Signed! Wow!
Do you have a link to your speaker build? Part list, schematics, case drawing?
BTW: my 2 subwoofers for LFE effects are powered by Audio Technology Flexunits 10 A 77 25 10.
BR, Toni
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Those boards look awesome Toni. Cant wait to get my hands on them 🙂
I haven't finalised the design yet, but it will be an active in wall 3 way for the living room. The front baffle will be CNC machined aluminium (of course 😀 ) so I might take advantage of that to do some kind of waveguide loaded tweeter.
Maybe a W-T-M-W using the Scan-Speak 28W for woofers:
http://www.scan-speak.dk/datasheet/pdf/28w-4878t00.pdf
At this stage the plan is to use the "Ultimate Preamp" to tie it all together:
Hi-end DSP based multi-channel integrated Preamp/Crossover/DAC project
Please note that the house isn't built yet so there is plenty of time to come up with a plan 🙂 House will be somewhere around those piles of dirt...
I haven't finalised the design yet, but it will be an active in wall 3 way for the living room. The front baffle will be CNC machined aluminium (of course 😀 ) so I might take advantage of that to do some kind of waveguide loaded tweeter.
Maybe a W-T-M-W using the Scan-Speak 28W for woofers:
http://www.scan-speak.dk/datasheet/pdf/28w-4878t00.pdf
At this stage the plan is to use the "Ultimate Preamp" to tie it all together:
Hi-end DSP based multi-channel integrated Preamp/Crossover/DAC project
Please note that the house isn't built yet so there is plenty of time to come up with a plan 🙂 House will be somewhere around those piles of dirt...
Attachments
Plenty of room for all SA20xx variants 😎.
I see you like the same speaker manufacturers as I do.
My main speakers (front/rear L/R ) are diy "M50 TL TA" (transmissionline; partially active; Scanspeak 26W8867T, ATC 75 SM 150 -16, Scanspeak D3004/6640 Beryllium) from this speaker developer site:
A.O.S. Audio Systeme
Top speakers and PC monitors are models "ILLU18-8 BE" (passve; Scanspeak 8WU8741T, D3004/6640 Beryllium)
with scanspeak drivers.
Subwoofers are Audio Technology Flexunits "10 A 77 25 10"
BR, Toni
I see you like the same speaker manufacturers as I do.
My main speakers (front/rear L/R ) are diy "M50 TL TA" (transmissionline; partially active; Scanspeak 26W8867T, ATC 75 SM 150 -16, Scanspeak D3004/6640 Beryllium) from this speaker developer site:
A.O.S. Audio Systeme
Top speakers and PC monitors are models "ILLU18-8 BE" (passve; Scanspeak 8WU8741T, D3004/6640 Beryllium)
with scanspeak drivers.
Subwoofers are Audio Technology Flexunits "10 A 77 25 10"
BR, Toni
PCB's arrived!
PCB's and some other parts arrived from Toni a couple of days ago. Thanks Toni!
Going well so far, but I need to order a few more parts that I either forgot or were not in stock.
Soon I will start matching the transistors with Atlas DCA Pro. Any advice regarding acceptable tolerances would be appreciated. 🙂
PCB's and some other parts arrived from Toni a couple of days ago. Thanks Toni!
Going well so far, but I need to order a few more parts that I either forgot or were not in stock.
Soon I will start matching the transistors with Atlas DCA Pro. Any advice regarding acceptable tolerances would be appreciated. 🙂
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Very clean soldering!
One hint: first solder flat parts and last solder the highest parts.
Matching: I have matched them out of the whole batch for lowest Vbe and hFe difference. During matching with your DCA 75 pro all transistors should have the same temperature. e.g. Use a thick aluminium brick and let the transistor cool down after you have touched them. After measurement write down the number on the back side of the transistor so you can find the part after sorting your spread sheet.
Have fun, Toni
One hint: first solder flat parts and last solder the highest parts.
Matching: I have matched them out of the whole batch for lowest Vbe and hFe difference. During matching with your DCA 75 pro all transistors should have the same temperature. e.g. Use a thick aluminium brick and let the transistor cool down after you have touched them. After measurement write down the number on the back side of the transistor so you can find the part after sorting your spread sheet.
Have fun, Toni
I got plenty of the smaller transistors and was able to get perfect matches where required.
For the output devices, I only got 20 of each and eliminating the worst 4 gave me hFe spread within 5-10%. Good enough?
For the output devices, I only got 20 of each and eliminating the worst 4 gave me hFe spread within 5-10%. Good enough?
very nice! well done! - Status
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