bit of a log shot this.
my tamp 90 burned it's self out a couple of weeks ago.. lots of blue smoke and burnt pcb traces.
i quickly ordered a new pcb from hlly.
9 days later and no order confrirmation or replies to my emails (but payment accepted according to paypal)
i emailed yesterday saying i was going to cancel my paypal payment unless i heard back.
finally got a reply apologising and offering a refund as the pcb is out of stock and they have no date for restock.
fantastic.
so now i have a lovely aluminium case and 24-0-24 toroid with nothing to connect it to.
anyone suggest an alternate amp of similar performance and dimensions that i can jam in the case?
link with internals here:
HLLY TAMP-90 90W Class T AMP AMPLIFIER Tripath TA2022 [TAMP-90] - $220.00 : DAC,Audio Amplifier,Hifi Amplifier,Tube Amplifier,Hlly Audio, Hlly Electronics
nice amp.. terrible customer service.
my tamp 90 burned it's self out a couple of weeks ago.. lots of blue smoke and burnt pcb traces.
i quickly ordered a new pcb from hlly.
9 days later and no order confrirmation or replies to my emails (but payment accepted according to paypal)
i emailed yesterday saying i was going to cancel my paypal payment unless i heard back.
finally got a reply apologising and offering a refund as the pcb is out of stock and they have no date for restock.
fantastic.
so now i have a lovely aluminium case and 24-0-24 toroid with nothing to connect it to.
anyone suggest an alternate amp of similar performance and dimensions that i can jam in the case?
link with internals here:
HLLY TAMP-90 90W Class T AMP AMPLIFIER Tripath TA2022 [TAMP-90] - $220.00 : DAC,Audio Amplifier,Hifi Amplifier,Tube Amplifier,Hlly Audio, Hlly Electronics
nice amp.. terrible customer service.
this is not HLLY but a ta2022 chip also, so maybe you can fit it in your case and use your existing torroid
ta2022 | eBay
ta2022 | eBay
thanks for that, ive looked through dozens of alternatives on ebay, some even looking quite similar to the original board, but i just dont wanna get burned with low grade or fake components. was hoping for a specific module or kit that comes highly recommended.
i was all set on the 41 hz amp5 kit, as it looks pretty perfect for my needs, and they have a good reputation.
unfortunately ive since realised that 41hz have some customer service issues of their own. ive not received any replies to requests for info, the forum has been down forever, and ive seen many threads saying that while you may get your kit, youll be without support.
other than them, all the ta2022 kits i can find come from unknown sources in china.
ive since pretty much decided to drop an lm3875 or 3886 stereo set in there.. seems a much simpler construction job, and plenty of well regarded kits around. bit less power than the ta2022, and ive no idea which sounds better in the end, but having a kit with a solid reputation is important to me. i dont wanna be bug hunting and modding for the next few months.
thanks anyway, Robin.
i was all set on the 41 hz amp5 kit, as it looks pretty perfect for my needs, and they have a good reputation.
unfortunately ive since realised that 41hz have some customer service issues of their own. ive not received any replies to requests for info, the forum has been down forever, and ive seen many threads saying that while you may get your kit, youll be without support.
other than them, all the ta2022 kits i can find come from unknown sources in china.
ive since pretty much decided to drop an lm3875 or 3886 stereo set in there.. seems a much simpler construction job, and plenty of well regarded kits around. bit less power than the ta2022, and ive no idea which sounds better in the end, but having a kit with a solid reputation is important to me. i dont wanna be bug hunting and modding for the next few months.
thanks anyway, Robin.
installing chip-amp boards is simple but don't they usually require much larger heatsinks and more case ventilation?
Since you are already looking at $200~300 amps, maybe add a bit more and get the Musical Fidelity M1? It costs more, but has more bells and whistles, better protection circuit (good speakers are worth protecting), from a well regarded brand with good warranty. Plus it is much easier to sell as well when you upgrade.
Since you are already looking at $200~300 amps, maybe add a bit more and get the Musical Fidelity M1? It costs more, but has more bells and whistles, better protection circuit (good speakers are worth protecting), from a well regarded brand with good warranty. Plus it is much easier to sell as well when you upgrade.
hmm, well im assuming since the case is one big aluminium extrusion, i should be ok dumping a bit more power into it. to be honest i have been wondering about that but, again, apart from 41hz, ive not found a well respected 2022 kit available to buy.
wrt the other suggestion, im certainly *not* looking to spend $200-$300!
my original amp cost in that ballpark, but the replacement board is about $80. (or would be, if it was available)
the ebay ones are unbelievably cheap at $20-$30.. hence my unwillingness to believe they are any good.
wrt the other suggestion, im certainly *not* looking to spend $200-$300!
my original amp cost in that ballpark, but the replacement board is about $80. (or would be, if it was available)
the ebay ones are unbelievably cheap at $20-$30.. hence my unwillingness to believe they are any good.
Hifimediy T2 Mundorf
this is a TK2050 board, which provide a little less power but should sound better than the 2022. I frequented the 41Hz forum quite a bit when it was still active, the censuses there, regarding which 41hz kit sounds the best, was basically amp4 (single tk2050) > amp11 (dual tk2050) >other low/mid power amps.( The really low voltage TA2020 does have its merit mostly due to the "SLA battery power" option.)
The HifimeDIY T2 in the link above is a ready-to-use board, meaning it doesn't require any upgrades. Some qualifiers:
-- voltage compatible with the ta2022. The 2022 uses dual voltage (+/-30), 2050 single 30V, so at least the transformer voltage is compatible.
-- has speaker protection relays.
-- has output DC offset trim pots.
-- has good size toroidal type output filter coil.
-- input caps seem to be decent enough. They wouldn't be my first choices (I would opt for something at the auricap level), but considering the total price involved these are respectable caps, provided they are genuine Mundorf, of course. You can always upgrade to something like auri or dynamic cap. dynamic cap for sale.
this is a TK2050 board, which provide a little less power but should sound better than the 2022. I frequented the 41Hz forum quite a bit when it was still active, the censuses there, regarding which 41hz kit sounds the best, was basically amp4 (single tk2050) > amp11 (dual tk2050) >other low/mid power amps.( The really low voltage TA2020 does have its merit mostly due to the "SLA battery power" option.)
The HifimeDIY T2 in the link above is a ready-to-use board, meaning it doesn't require any upgrades. Some qualifiers:
-- voltage compatible with the ta2022. The 2022 uses dual voltage (+/-30), 2050 single 30V, so at least the transformer voltage is compatible.
-- has speaker protection relays.
-- has output DC offset trim pots.
-- has good size toroidal type output filter coil.
-- input caps seem to be decent enough. They wouldn't be my first choices (I would opt for something at the auricap level), but considering the total price involved these are respectable caps, provided they are genuine Mundorf, of course. You can always upgrade to something like auri or dynamic cap. dynamic cap for sale.
hmm.. interesting. i have their little sabre usb dac.
questions: ( noobie ones) my toroid is 24-0-24.
specs say
a) max 22v ac input, so 24 (assuming i trust the label on the toroid) is pushing it rather?
b) can i use one side of the secondary windings and still get the full output of the toroid? it seems unreasonably small considering it was driving a 90wpc amp (its only 4.5 inches diameter and 1.5 inches high, no VA rating specified)
c) specs also say 50w into 8 ohm 100w into 4 ohm, so pretty much the same as the 2022..?
questions: ( noobie ones) my toroid is 24-0-24.
specs say
a) max 22v ac input, so 24 (assuming i trust the label on the toroid) is pushing it rather?
b) can i use one side of the secondary windings and still get the full output of the toroid? it seems unreasonably small considering it was driving a 90wpc amp (its only 4.5 inches diameter and 1.5 inches high, no VA rating specified)
c) specs also say 50w into 8 ohm 100w into 4 ohm, so pretty much the same as the 2022..?
per the tripath data sheet, the 2022 and 2050 have the same max operating voltage, which is 36V. (2022 is +/- 36, of course). so the transformer should fit. (unless the transformer output voltage was too high to start with which is why the amp died...)
you can use full-wave rectification to utilize both sides of secondary windings.
the power specs of the boards usually have a lot of water, all depending on what % THD was allowed when testing. But paralled-output tk2050 can get quite powerful indeed. ( I supposed the T2 is similar to the 41hz amp11)
If you are gonna do a separate full-wave rectified power supply, I would suggest adding a voltage regulator as well, maybe LM7824 x4 (use 0.33 ohm ballast resisters at the output of each 7824), which should give you 3A output. They do need heatsinks though.
The final power might end up being a little lower with 24V, but the sound should be a lot cleaner.
you can use full-wave rectification to utilize both sides of secondary windings.
the power specs of the boards usually have a lot of water, all depending on what % THD was allowed when testing. But paralled-output tk2050 can get quite powerful indeed. ( I supposed the T2 is similar to the 41hz amp11)
If you are gonna do a separate full-wave rectified power supply, I would suggest adding a voltage regulator as well, maybe LM7824 x4 (use 0.33 ohm ballast resisters at the output of each 7824), which should give you 3A output. They do need heatsinks though.
The final power might end up being a little lower with 24V, but the sound should be a lot cleaner.
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