Hi, yes it'll become a commercial product at a really favourable price...
Hey Col don't panic, you don't HAVE to use the on board power supply...😉
Hey Col don't panic, you don't HAVE to use the on board power supply...😉
How would it compete sonically with a Truepath? Is your goal to make a cheaper, easily accessible version or a comparative alternative?
v-bro said:
They custom make all voltages to your liking, with the default being 60V for the Truepath. It was the specific smps discussed in the 41hz forums (http://www.41hz.com/Forums/topic.asp?TOPIC_ID=1946).
v-bro said:
Good news, i could stop stalcking the guy selling a second hand bel canto evo
Could we get an idea of price and availabilities ? My 7 channel amplifier still don`t know wich part it will be made of 😉
Regards
Anthony
TA3020 news
Hi there Fellow DIYers,
Ive ordered the first 20 pieces now, and it will take about one week before there done.
Exact specs will be posted after ive tested the first production units, i still need a 60+60 volts powersupply!! so sofar ive only tested at 30+30 volts.
This is why the specs have not been posted yet.
Greetings,
Arjen Helder
Hi there Fellow DIYers,
Ive ordered the first 20 pieces now, and it will take about one week before there done.
Exact specs will be posted after ive tested the first production units, i still need a 60+60 volts powersupply!! so sofar ive only tested at 30+30 volts.
This is why the specs have not been posted yet.
Greetings,
Arjen Helder
V-bro, is the amp you are talking about the same as amp7 listed on 41hz.com?
http://www.41hz.com/main.aspx?pageID=122
cheers,
col.
http://www.41hz.com/main.aspx?pageID=122
cheers,
col.
Nope, it's something entirely different... It's much smaller in the first place, it has numerous PCB holes to fit all kinds of input caps (like on the AMP11). It's got 5V and VN10 supplies on board, but of course they can also be done externally when this is preferred...
Can't tell much more because it's not released yet...
Can't tell much more because it's not released yet...
Hi V-bro
Sounds exciting 🙂
Just joined diyaudio and stumbled across this thread. Looking forward to seing pictures of your kit.
Sounds exciting 🙂
Just joined diyaudio and stumbled across this thread. Looking forward to seing pictures of your kit.
Looks interesting v-bro. Having all power supply components on-board has a lot of advantages. The TA3020 Bel Canto had all power supply components other than mains filtering and soft start located on the amplifier board:
http://www.belcantodesign.com/pdfs/eVo_architecture.pdf
It makes it easier and cheaper to build a multi-channel amplifier or run two amps in bridged mode.
It would be nice to also provide some sort of speaker protection and silent on-off as this is another thing that needs to be added to the truepath with external boards.
A two channel truepath build with all the power supply components and speaker protection takes up a lot of real estate inside the case. It looks nice though 🙂
http://www.belcantodesign.com/pdfs/eVo_architecture.pdf
It makes it easier and cheaper to build a multi-channel amplifier or run two amps in bridged mode.
It would be nice to also provide some sort of speaker protection and silent on-off as this is another thing that needs to be added to the truepath with external boards.
A two channel truepath build with all the power supply components and speaker protection takes up a lot of real estate inside the case. It looks nice though 🙂
New fully finished TA3020 Board
Ladies and Gentleman,
Finally im done with testing, and from now on ready for ordering,
The TA3020 Fully Finished amplifer PCB.
The following specs,
-Supply voltage, 30-60 Volts
Output power, at 60 volts supply voltage:
- 300 Watt at 4 Ohms
- 150 Watts at 8 Ohms
At more normal power levels,
- 0.02% THD+N @ 50W, 8Ù
- 0.03% IHF-IM @ 30W, 8Ù
The Powersupply needs 2 X 60 volts, and does not need any other voltages.
Later today i will add a photo of the PCB ( im still @ work )
Price is the equalivant of 1000 RMB, or 117 Euro at the current ratings, for a fully finished and tested PCB.
Ladies and Gentleman,
Finally im done with testing, and from now on ready for ordering,
The TA3020 Fully Finished amplifer PCB.
The following specs,
-Supply voltage, 30-60 Volts
Output power, at 60 volts supply voltage:
- 300 Watt at 4 Ohms
- 150 Watts at 8 Ohms
At more normal power levels,
- 0.02% THD+N @ 50W, 8Ù
- 0.03% IHF-IM @ 30W, 8Ù
The Powersupply needs 2 X 60 volts, and does not need any other voltages.
Later today i will add a photo of the PCB ( im still @ work )
Price is the equalivant of 1000 RMB, or 117 Euro at the current ratings, for a fully finished and tested PCB.
Congratulations Arjen!
Measured of course!
More features are
-jumper to choose between star ground or full ground planes.
-fets and rectifier diodes are all faced downwards so the whole amp can be bolted to a heatsink with large flat surface, this makes it ideal to use as a plate amp.
-traces towards the fets are EXTREMELY short.
-all electrolytic caps will be very low impedance and long life.
-just a transformer with double voltage is needed.
BWRX said:
Measured of course!
More features are
-jumper to choose between star ground or full ground planes.
-fets and rectifier diodes are all faced downwards so the whole amp can be bolted to a heatsink with large flat surface, this makes it ideal to use as a plate amp.
-traces towards the fets are EXTREMELY short.
-all electrolytic caps will be very low impedance and long life.
-just a transformer with double voltage is needed.
Nice,
It will be difficult to choose beetween your product:
Do you have the input impedance ?
Is it possible to bridge them for a balanced input ?
Regards
Anthony
It will be difficult to choose beetween your product:
Do you have the input impedance ?
Is it possible to bridge them for a balanced input ?
Regards
Anthony
TA3020
What a amazing coincidence, two Dutchman, one in China, one in Holland both with the same IC, and comparable design.
The PCB here is also a Flat design that cools al the mosfets and the TA3020 on one heatsink, and it bearly gets even warm, even at high power i have let it run without any heat sink at all, without it getting hot. i didnt expect this, nor reccomend this, but this is one " green " amplifier!
As for the specs, yeah, gotta admit, there guessed, i measured the output power for as far as i could, ( speakers started to get a bit smelly and ears started bleeding ;-)
And if there is anyone who has such equipment to measure output power and THD levels at different output power and load.... im your new friend, please help me get it tested 🙂
Other than that, here is the photo, more photo's will follow as soon as i have the time taking them.
Greetings from the far east,
Arjen Helder
What a amazing coincidence, two Dutchman, one in China, one in Holland both with the same IC, and comparable design.
The PCB here is also a Flat design that cools al the mosfets and the TA3020 on one heatsink, and it bearly gets even warm, even at high power i have let it run without any heat sink at all, without it getting hot. i didnt expect this, nor reccomend this, but this is one " green " amplifier!
As for the specs, yeah, gotta admit, there guessed, i measured the output power for as far as i could, ( speakers started to get a bit smelly and ears started bleeding ;-)
And if there is anyone who has such equipment to measure output power and THD levels at different output power and load.... im your new friend, please help me get it tested 🙂
Other than that, here is the photo, more photo's will follow as soon as i have the time taking them.
Greetings from the far east,
Arjen Helder
Attachments
Please excuse the question, but just PCB or fully populated with all components including heatsink? Is the PCB stereo or single channel?
Sorry to ask
TA3020
The PCB is fully finished, thus populated and tested, and includes the heatsink.
its the stereo version, but with some small mods it can also be bridged.
all you need are:
- 2 X 60 volts powersupply
- Housing and connectors
- Speakers
- CD player or other source
The PCB is fully finished, thus populated and tested, and includes the heatsink.
its the stereo version, but with some small mods it can also be bridged.
all you need are:
- 2 X 60 volts powersupply
- Housing and connectors
- Speakers
- CD player or other source
From Argentina ...
Hi Arjen this is Fabio ... maybe I'll go for this one too...
It´s tempting me, and easy to hide from the wife too.
Nice work if you can get it.
Hi Arjen this is Fabio ... maybe I'll go for this one too...
It´s tempting me, and easy to hide from the wife too.
Nice work if you can get it.
TA3020
Does it help to say that my girl loves the sound of it ? 🙂
She even helps assamble them! hahah
not to worry ill give you the photo's tomorrow and put some more info online. just have been too busy last days so im too tired to actually think.....
im also making PDF files for all different PCB's i have to make sure everyone is well informed and knows how to use and modd them.
ive also bought some empty inductor " rods " if you will, to wind my own coils. im listning to the TA2020 now whil using them. the amp seems a bit more stabile and it reduced the resistance in the outpout stage with about 50 milli ohms. they keep stone cold, so i think the losses in the coils are very low.
Anyways, feel free to pre-order, as the first lot is only 10 pieces and ive got quite some requests. no need to pay in advance, and first come fist serve.
Greetings from my un-heated house at 14 degrees in Shenzhen. Brrrr.....
Does it help to say that my girl loves the sound of it ? 🙂
She even helps assamble them! hahah
not to worry ill give you the photo's tomorrow and put some more info online. just have been too busy last days so im too tired to actually think.....
im also making PDF files for all different PCB's i have to make sure everyone is well informed and knows how to use and modd them.
ive also bought some empty inductor " rods " if you will, to wind my own coils. im listning to the TA2020 now whil using them. the amp seems a bit more stabile and it reduced the resistance in the outpout stage with about 50 milli ohms. they keep stone cold, so i think the losses in the coils are very low.
Anyways, feel free to pre-order, as the first lot is only 10 pieces and ive got quite some requests. no need to pay in advance, and first come fist serve.
Greetings from my un-heated house at 14 degrees in Shenzhen. Brrrr.....
- Status
- Not open for further replies.