Amp built years ago when TA0103A were popular - with a Hypex SMSP400 SMPS. Turn on and Turn off thump (these Tripaths were notorious for these thumps) have been mitigated with delays.
Sounds great / clean. See attached pics and Application notes.
Ships from West sub of Chicago
How's $450 + ship? CONUS only please....
Sounds great / clean. See attached pics and Application notes.
Ships from West sub of Chicago
How's $450 + ship? CONUS only please....
Attachments
This is of potential interest to me.
How does the 0103 compare to the 0105 such as this: https://connexelectronic.com/product/ta0105arb/
Why is the quoted power output as low as it is, shouldn't this chip support higher output? Certainly the smps could be more powerful; what mosfets are you using?
I have a ta3020 from connex, the v3c I believe, with all the upgrade options - mosfets, capacitors. I have I believe a 300w smps and it actually holds back my power output: the amp doesn't distort audibly until it simply shuts off if I'm driving a very high level bass signal. I plan to get a bigger smps and see what it can do. I also spec'd the rail voltage to be as high as possible, I don't know exactly what it is but it's north of 60 volts. This amp has taken serious abuse for over a decade and is still going, and it's left on 24/7. Sometimes these days though, if I cut the power and plug it back in, it struggles or fails to turn on a time or two and I have to keep plugging it in after waiting 10 seconds for the safety delay. But it still sounds like when it was new (or better if burn in has had any positive effects).
The ta3020, esp if you look at the v4d or other newer connex offering, when given the highest safe rail voltage and appropriate mosfets, can output an easy 200 clean watts into 8 ohms and more into 4. I love the tripath sound but with 15" pro woofers handling low bass in a pure 2ch setup, I need power. I got a crown amp with 500+ watts into 8 ohms and the bass capabilities exposed in my speakers was impressive. But it doesn't sound as good obviously.
If the 0103, and specifically your implementation here, sounds better than my 3020 I would be interested even if it's only 100w. My v3c isn't doing much more than that on a 300w smps, maybe 125w/ch. Is that a ln ultra low sub .01% or .1% thd power spec? Will it output more clean power given a 600 or 800w smps? Are there any other improvements that could be made like mosfets, for power output?
How does the 0103 compare to the 0105 such as this: https://connexelectronic.com/product/ta0105arb/
Why is the quoted power output as low as it is, shouldn't this chip support higher output? Certainly the smps could be more powerful; what mosfets are you using?
I have a ta3020 from connex, the v3c I believe, with all the upgrade options - mosfets, capacitors. I have I believe a 300w smps and it actually holds back my power output: the amp doesn't distort audibly until it simply shuts off if I'm driving a very high level bass signal. I plan to get a bigger smps and see what it can do. I also spec'd the rail voltage to be as high as possible, I don't know exactly what it is but it's north of 60 volts. This amp has taken serious abuse for over a decade and is still going, and it's left on 24/7. Sometimes these days though, if I cut the power and plug it back in, it struggles or fails to turn on a time or two and I have to keep plugging it in after waiting 10 seconds for the safety delay. But it still sounds like when it was new (or better if burn in has had any positive effects).
The ta3020, esp if you look at the v4d or other newer connex offering, when given the highest safe rail voltage and appropriate mosfets, can output an easy 200 clean watts into 8 ohms and more into 4. I love the tripath sound but with 15" pro woofers handling low bass in a pure 2ch setup, I need power. I got a crown amp with 500+ watts into 8 ohms and the bass capabilities exposed in my speakers was impressive. But it doesn't sound as good obviously.
If the 0103, and specifically your implementation here, sounds better than my 3020 I would be interested even if it's only 100w. My v3c isn't doing much more than that on a 300w smps, maybe 125w/ch. Is that a ln ultra low sub .01% or .1% thd power spec? Will it output more clean power given a 600 or 800w smps? Are there any other improvements that could be made like mosfets, for power output?
Thank you, I've seen the reference PDF. So your amplifier is a straight reference design board? Who built the board? Where did it come from? Did you put the pieces together in a case? It looks nice btw.
I could be wrong but from my understanding, tripath provided a reference layout but only sold the chips, so a prospective builder could just copy their reference design or they could modify and potentially seek to improve it. The "better" tripath amps commercially available back in the day weren't typically reference designs afaik, not that the reference design is bad. But that PDF only discusses the board, not a complete package with the hypex smps. I find it curious it only specs 250wx2 into 4 ohms and doesn't mention an 8 ohm power, nor multiple voltages, and only gives the single .1% thd number... Most of tripaths literature for other models had more information.
However from the 250w spec at 4 ohms it does seem the 400w smps could hold it back some depending on the load. The amp could theoretically put out 125w at 8 ohms at that voltage, and might be capable of quite a bit more if it can handle more voltage.
If that is all the info you have access to or care to gather that's ok, I appreciate it. If you find anything more let me know. I'm not ready to pull the trigger just now, there's a lot of options to consider, including available tripath amps from connex or hifimediy, but I love tripath stuff and remain intrigued - haven't seen the 0103 anywhere else, and frankly don't know how it compares to the 0105. If it starts to collect dust and you decide really want to get rid of it, either revise your offer or ask me for one if you are willing to come down/negotiate. It would be in a loving home put to regular use by someone who understands and appreciates what it is.
I could be wrong but from my understanding, tripath provided a reference layout but only sold the chips, so a prospective builder could just copy their reference design or they could modify and potentially seek to improve it. The "better" tripath amps commercially available back in the day weren't typically reference designs afaik, not that the reference design is bad. But that PDF only discusses the board, not a complete package with the hypex smps. I find it curious it only specs 250wx2 into 4 ohms and doesn't mention an 8 ohm power, nor multiple voltages, and only gives the single .1% thd number... Most of tripaths literature for other models had more information.
However from the 250w spec at 4 ohms it does seem the 400w smps could hold it back some depending on the load. The amp could theoretically put out 125w at 8 ohms at that voltage, and might be capable of quite a bit more if it can handle more voltage.
If that is all the info you have access to or care to gather that's ok, I appreciate it. If you find anything more let me know. I'm not ready to pull the trigger just now, there's a lot of options to consider, including available tripath amps from connex or hifimediy, but I love tripath stuff and remain intrigued - haven't seen the 0103 anywhere else, and frankly don't know how it compares to the 0105. If it starts to collect dust and you decide really want to get rid of it, either revise your offer or ask me for one if you are willing to come down/negotiate. It would be in a loving home put to regular use by someone who understands and appreciates what it is.
The amp Board came from Profusion in UK a number of years ago. From what I understand, the board was made by Tripath - its the TA0103 Evaluation Board. The attachment I posted is the actual Evaluation Board, hence the filename eb-ta0103. There is an eb-ta0105 evaluation board that Tripath made too that had higher voltage rails.
The TA0103 TA0104 and TA0105 were put into Carver Z amps, Audio Research 150.2, 300.2 and Bel Canto EVO amplifiers back in the 2000's...
As far as I understand, you do not need 500 watt power supply to power a 2 x 250 watt 4 ohm Class D amp for music...I remember an ICEPower 2x500A amp kit powered with a single 400VA transformer...
PM me an offer. Worst that can happen is a no...
The TA0103 TA0104 and TA0105 were put into Carver Z amps, Audio Research 150.2, 300.2 and Bel Canto EVO amplifiers back in the 2000's...
As far as I understand, you do not need 500 watt power supply to power a 2 x 250 watt 4 ohm Class D amp for music...I remember an ICEPower 2x500A amp kit powered with a single 400VA transformer...
PM me an offer. Worst that can happen is a no...