I received these cables today which I will include from now on to make it a little easier to connect.
An externally hosted image should be here but it was not working when we last tested it.
Boo hoo.
I was too early to order. The input pins are making me feel all thumbs. That's without a soldering iron, so hopefully soon I'll see if I can slap something together. Nevertheless the board looks great!
I think I should have said "parallel," not "bridge." But if a single TP2050 chip can operate in either a two channel (6/8 ohm) or a paralleled one channel (4 ohm) configuration (datasheet: http://www.datasheetcatalog.org/datasheet/Tripath/mXyzwqtx.pdf), it would be useful to have the ability to switch between the two modes (e.g., with a dip switch).
I don't know if this feature would be practical to implement. But it would make the board more versatile, and give more people a reason to buy it.
Hi all, my first post here but im not new to audio (into it 30yrs) or Class T (8years,
anyways, I recieved 2 of these amps yesterday from Nick12247, i hooked one up to a Meanwell 36v supply (turned down to 31v ) in place of a stock standard Sureelectronics 2ch 2050 amp board that i had powering a pair of 8ohm bookshelf speakers,(TL 6.5s with Foster Ribbon tweets and.... WOW !! this little beast is Great ! actually i think it eats the stock Sure amp for breakfast ! super bass control, a larger soundstage and what seems like more power too ??. Had it running flatout all afternoon here (playing Trentemoeller and DeadMau5 and some Goa ) the heatsink is just cruising,thats no mean feat on this music !
i havnt tried the amp on my good dac or my on my big speakers yet ( 6 ohm VonSchwekert floorstanders ) that will be very interesting, those are currently powredd by 2 Hilly 90 /T2022 based amps,one amp on each speaker ;-) and they sound pretty dam good
anyways,I am going to buy 2 more of these little beauties.
Good Find ,thanksagain Nick!
anyways, I recieved 2 of these amps yesterday from Nick12247, i hooked one up to a Meanwell 36v supply (turned down to 31v ) in place of a stock standard Sureelectronics 2ch 2050 amp board that i had powering a pair of 8ohm bookshelf speakers,(TL 6.5s with Foster Ribbon tweets and.... WOW !! this little beast is Great ! actually i think it eats the stock Sure amp for breakfast ! super bass control, a larger soundstage and what seems like more power too ??. Had it running flatout all afternoon here (playing Trentemoeller and DeadMau5 and some Goa ) the heatsink is just cruising,thats no mean feat on this music !
i havnt tried the amp on my good dac or my on my big speakers yet ( 6 ohm VonSchwekert floorstanders ) that will be very interesting, those are currently powredd by 2 Hilly 90 /T2022 based amps,one amp on each speaker ;-) and they sound pretty dam good
anyways,I am going to buy 2 more of these little beauties.
Good Find ,thanksagain Nick!
This isn't dangerous at all...
[phone Pic]
Solder-free test!
PC as a source in this first test setup was too noisy, but the portable Fuze works well. I think this amp has better low level detail than my HLLY TA2020 amp.
I'm using a HP brick 31VDC 3A power supply.
Heat sink is kinda warm...
It's great so far! I'm tickled pink!
An externally hosted image should be here but it was not working when we last tested it.
[phone Pic]
Solder-free test!
PC as a source in this first test setup was too noisy, but the portable Fuze works well. I think this amp has better low level detail than my HLLY TA2020 amp.
I'm using a HP brick 31VDC 3A power supply.
Heat sink is kinda warm...
It's great so far! I'm tickled pink!
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Heat Sink
I've been running this board for an hour now using a 31v power supply and no audio signal. The heat dissipation (measured by fingertip) seems similar to my Sure board using a Zalman heatsink (ZM-NB47J), possibly a bit worse. I have to pull my finger away after 4-5 seconds. Even if the sound quality is better, the heat generated is pretty much the same.
I've been running this board for an hour now using a 31v power supply and no audio signal. The heat dissipation (measured by fingertip) seems similar to my Sure board using a Zalman heatsink (ZM-NB47J), possibly a bit worse. I have to pull my finger away after 4-5 seconds. Even if the sound quality is better, the heat generated is pretty much the same.
Ok, i am now listening to one of these TK2050 boards on my best speakers - ive had em 10yrs, theyr Von Schweikert VR4.5 Fullrange -6ohms 20-20- floorstanders . anyways the new amp board i installed in place of the two Hlly 90 (ta2022)amplifiers ive been using for 3 months,one hlly90 on each speaker -non bridged .
Well, anybody want to buy 2 mint Hlly 90 amps ?? lol.
from first power up the new TK2050 is in another league to the hlly !! actually its alot like my Autocostruire Ta2020 boards -but with loads more power.
the low bass wow !! tight tight so controled, HUGE soundstage ,detailed an sssweet ,gobloads of that Tripath mid depth and speed. i just know it will improve too with more hours use . power for the new board is from the Meanwell 36v smps ,ive now turned it up a bit from 31v to 33.8v no problem so far, the heatsink is quite comfortable for me to touch for as long as i want but it is cold here -20c - its winter in australia.
ive got a pair of nice Obligato caps i was going to put in -it will be so easy on this board to cap roll ,they thought of everything- but i wont yet ,the stock MKP ? input caps sound just fine.
ok rave over.
Well, anybody want to buy 2 mint Hlly 90 amps ?? lol.
from first power up the new TK2050 is in another league to the hlly !! actually its alot like my Autocostruire Ta2020 boards -but with loads more power.
the low bass wow !! tight tight so controled, HUGE soundstage ,detailed an sssweet ,gobloads of that Tripath mid depth and speed. i just know it will improve too with more hours use . power for the new board is from the Meanwell 36v smps ,ive now turned it up a bit from 31v to 33.8v
no problem so far, the heatsink is quite comfortable for me to touch for as long as i want but it is cold here -20c - its winter in australia.ive got a pair of nice Obligato caps i was going to put in -it will be so easy on this board to cap roll ,they thought of everything- but i wont yet ,the stock MKP ? input caps sound just fine.
ok rave over.
Update, bad news ,it was all sounding soo great an all ...an then all went very quiet and there was a bad smell. Woops, I guess giving it just under 34v dc was too much for it after all. It was sounding sooo good too . damit.
i just ordered 3 more but i will keep my meanwell smps turned right down from now on!
i just ordered 3 more but i will keep my meanwell smps turned right down from now on!
31vdc max now!!
I have been in touch with hifimediy about this, and he says it's because of too high voltage. We must say 31VDC is maxium voltage from now on.
if it gets too warm it will auto turnoff, the high temperature will not make it burn.
So everybody: take note and don't push it over 31VDC.
cirkittboy will ship his board back and I will send him a new one.
I have been in touch with hifimediy about this, and he says it's because of too high voltage. We must say 31VDC is maxium voltage from now on.
if it gets too warm it will auto turnoff, the high temperature will not make it burn.
So everybody: take note and don't push it over 31VDC.
cirkittboy will ship his board back and I will send him a new one.
Thank you for advice, however, I do not use the Meanwell SMPS but this one, custom modified to 36V output:
Wholesale 150W SMPS Product-150W +5V/1A/+ 15V/1A/24V/5A ATX Switch Power Supply
A few questions
I'm still trying to decide on a board to use for an upcoming multichannel amp project. Currently looking at 4 x 41hz amp9-b, 4 x sure 4*100, 8 x this TK2050 amp, or build my own TK2050 amp (sounds scary and like a fun challenge at the same time).
Questions:
I'm still trying to decide on a board to use for an upcoming multichannel amp project. Currently looking at 4 x 41hz amp9-b, 4 x sure 4*100, 8 x this TK2050 amp, or build my own TK2050 amp (sounds scary and like a fun challenge at the same time).
Questions:
- What considerations are there when powering multiple boards? Can a single power supply be split to multiple boards, and how would you wire it?
- How does this board handle DC offset? There is an application example in the Tripath 6ch TK2050 dev board using an opamp to correct for DC offset, but I didn't know if this had an automatic correction like that, or a manual correction like the sure boards, or no correction.
- How accessible are the mute and ovrldb pins on the TC2000? I'd want to tap into the mute pin to mute it, and the ovrldb pin to show an overload indicator.
- What value and type is the right angle pcb mounted volume pot? I'd probably get some front panel mounted pots to use instead and pull the existing one.
Hi, I think you can split single power supply if the current ability is enough for multiple boards. you can connect all boards to the output of power supply seperately.
Our board (AMT2050 series) use Trimming Potentiometers (near the volume pot) to adjust the DC offset. We also will pre-adjust the offset close to 0mV before we send out.
Mute of TC2000 is connected to a supervise IC which will keep it mute both when power on and off. Overload pin is not used now. you can use these pins if you want, some hand work needed.
I will post the dimension of the volume pot later.
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