Hi all,
I'm building a "test" amplifier for my long term speaker building project and looking for some recommendations.
The final setup will be Hypex DLCP based, 2 nCore;s per channel for mid and high and a UCD400 for sub, driving (basically) a Grimm Audio LS1 clone -- humbly called the WC1D (wc-eend for our dutch speaking friends). As said, it'll be a long term project as I'll have to spread out the cost over a few months, especially for the DLCP and additional ncore's. Progress (dutch only) can be seen here.
Lots of off topic chatter, so you'll have to browse a bit. Some design pictures.
In the mean time, I've picked up a supercheap second hand minidsp 2x4 to get a hang of digital filtering, measuring etc. Apart from some really low power/crappy TA2024's I don;t have any test amplifiers handy and if I start to build new amplifiers that;ll drive up cost/time considerably.
SO...
Are you guys aware of any reasonably performing, not too expensive (say <20 USD per stereo pair) simple chinese/ebay/whatever modules ? preferably without stuff like volume or tone controls.
I'll need 2 modules, subs will be added later. They'll be powered either from an old Lenovo laptop transformer (~20V) or I'll have to go through my parts bin and build a proper PSU, voltage somewhere in the 20-36V range.
Does anyone know of someone who has happened to have tested a bunch of these modules?
What I've found so far:
TPA3116D2 - Ebay link
Seems EMI is a problem with these modules, apparently the output filter sucks (or, at least on the chinese knockoff versions), the bootstrap caps are misplaced leading to bad performance and whatnot. Still a reasonable option, and maybe best of the worst ?
TDA7498 - ebay link
Seems that most of the TDA7498 based boards use fake TDA7498 chips with performance and EMI issues (?)
TP2050 - ebay link
Not much info to be found, at least no measurements.
Looking for a "throw it in a box" kind of module, I won't be modding anything 🙂
Thanks (in advance) for your tips!
PS: posted in the Class D forum as most of the chinese cheap crappy modules seem to use Class D. I don;t really care about what technology is used, class D does have the advantage of low power dissipation.
I'm building a "test" amplifier for my long term speaker building project and looking for some recommendations.
The final setup will be Hypex DLCP based, 2 nCore;s per channel for mid and high and a UCD400 for sub, driving (basically) a Grimm Audio LS1 clone -- humbly called the WC1D (wc-eend for our dutch speaking friends). As said, it'll be a long term project as I'll have to spread out the cost over a few months, especially for the DLCP and additional ncore's. Progress (dutch only) can be seen here.
Lots of off topic chatter, so you'll have to browse a bit. Some design pictures.
In the mean time, I've picked up a supercheap second hand minidsp 2x4 to get a hang of digital filtering, measuring etc. Apart from some really low power/crappy TA2024's I don;t have any test amplifiers handy and if I start to build new amplifiers that;ll drive up cost/time considerably.
SO...
Are you guys aware of any reasonably performing, not too expensive (say <20 USD per stereo pair) simple chinese/ebay/whatever modules ? preferably without stuff like volume or tone controls.
I'll need 2 modules, subs will be added later. They'll be powered either from an old Lenovo laptop transformer (~20V) or I'll have to go through my parts bin and build a proper PSU, voltage somewhere in the 20-36V range.
Does anyone know of someone who has happened to have tested a bunch of these modules?
What I've found so far:
TPA3116D2 - Ebay link
Seems EMI is a problem with these modules, apparently the output filter sucks (or, at least on the chinese knockoff versions), the bootstrap caps are misplaced leading to bad performance and whatnot. Still a reasonable option, and maybe best of the worst ?
TDA7498 - ebay link
Seems that most of the TDA7498 based boards use fake TDA7498 chips with performance and EMI issues (?)
TP2050 - ebay link
Not much info to be found, at least no measurements.
Looking for a "throw it in a box" kind of module, I won't be modding anything 🙂
Thanks (in advance) for your tips!
PS: posted in the Class D forum as most of the chinese cheap crappy modules seem to use Class D. I don;t really care about what technology is used, class D does have the advantage of low power dissipation.
Save your self the trouble and get an icepower 50asx2, includes the psu on the board.
You may actually end up liking the result, if you upgrade to ncore, you can resell board or use it in a secondary system.
You may actually end up liking the result, if you upgrade to ncore, you can resell board or use it in a secondary system.
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2*100W TPA3116 D2 Dual Channel Digital Audio Amplifier Board 12V-24V for Arduino | eBay
^^^ That one or similar. Comes with a shielded JST XH cable for input.
Or may: YJ Assembled TPA3116 power amplifier board 50W+50W green board-sn | eBay
Avoid the YJ blue board (SQ).
J.
^^^ That one or similar. Comes with a shielded JST XH cable for input.
Or may: YJ Assembled TPA3116 power amplifier board 50W+50W green board-sn | eBay
Avoid the YJ blue board (SQ).
J.
Have you looked at the IRS2092 based modules? I got a pair for $28 and an Abletec power supply for $19. Seems decent.. it's not an Ncore, but it also isn't hundreds of $$...
http://www.diyaudio.com/forums/class-d/275915-200w-irs2092-amp-20-a.html
http://www.diyaudio.com/forums/class-d/281698-abletec-53v-dual-rail-450w-supply-20-a.html
http://www.diyaudio.com/forums/class-d/275915-200w-irs2092-amp-20-a.html
http://www.diyaudio.com/forums/class-d/281698-abletec-53v-dual-rail-450w-supply-20-a.html
Hi matjans,
I own two Sure TPA3116D2 boards and also IcePower 50ASX2 SE modules.
I went to IcePower because I wasn't satisfied of the TPA3116 boards even with changing the six PSU rails caps with OSCON SEPF.
So my advice is also to go directly to IcePower 50ASX2 SE or BTL, depending of the power needed.
I own two Sure TPA3116D2 boards and also IcePower 50ASX2 SE modules.
I went to IcePower because I wasn't satisfied of the TPA3116 boards even with changing the six PSU rails caps with OSCON SEPF.
So my advice is also to go directly to IcePower 50ASX2 SE or BTL, depending of the power needed.
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hi, im using 2 ES9023 based DACs and some amps from Hifimediy. T3 mono and T4 (both macp) for a 3way setup. the amps are absolutly stunning, yet, not the cheapest ones.
the DACs were quite cheap, and are a huge improvement for the minidsp.
- way less noise
- higher output (2Vrms)
- little bit better performance, soundwise
the noise-limiting factor is now the input ADC of the minidsp, redudant with I2S connection.
so my recommendation : 1. DACs 2. Hifimediy Amps
the DACs were quite cheap, and are a huge improvement for the minidsp.
- way less noise
- higher output (2Vrms)
- little bit better performance, soundwise
the noise-limiting factor is now the input ADC of the minidsp, redudant with I2S connection.
so my recommendation : 1. DACs 2. Hifimediy Amps
hey guys, thanks for the replies. With the minidsp I'm not aiming for a high end integrated crossover/amp, the minidsp being a limiting factor no matter what amps you use.
This is just a temporary solution that needs to be cheap and "not too bad", as I will be migrating to a DLCP + 2x2ch ncore anyway. I needed somewhat more power than the TA2024 (2*15W really isn;t enough).
On the other hand, a Hypex 4 channel 32w/ch is only 100 euro (including power supply), so that may be a better choice overall...
This is just a temporary solution that needs to be cheap and "not too bad", as I will be migrating to a DLCP + 2x2ch ncore anyway. I needed somewhat more power than the TA2024 (2*15W really isn;t enough).
On the other hand, a Hypex 4 channel 32w/ch is only 100 euro (including power supply), so that may be a better choice overall...
Hi matjans,
Not really a plug en play product like the rest of the UCD range IMHO.
BR
/Pascal
Those UCD3x modules have no input buffer, the UCD 180 ST/HG have one.
Not really a plug en play product like the rest of the UCD range IMHO.
BR
/Pascal
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