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Old 4th July 2019, 02:41 PM   #1421
matt_garman is offline matt_garman  United States
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@DUG - your tpa325x looks great! Have you done any comparisons to your tpa311x design?

I'm still running an amp based on your tpa3116 boards in our living room. I leave that amp powered on 24/7, and that's been the state since I built them, which looks like over four years ago!
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Old 5th July 2019, 12:57 AM   #1422
enio nery is offline enio nery  Philippines
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Originally Posted by DUG View Post
So I start with a TPA3251/3255 pcb, a front end for it and heatsink sliced from a computer heatsink.
I have a bunch of those cpu heatsinks but i cant fimd any aluminum fabricator that is willing to cut them to size. Planning to change the tiny heatsink that came with the tpa 3116d2 board that i ordered. But im not sure if theres any real world avantage going for a larger heatsink? Tia
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Old 14th July 2019, 03:54 PM   #1423
orchardaudio is online now orchardaudio  United States
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Default BOSC - HiFi Monoblock Class-D GaN Amp

BOSC | Orchard Audio
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Old 22nd July 2019, 01:30 PM   #1424
BallJack is offline BallJack  Philippines
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This is a sleeper build of a pair of HX-M311 with passive tone controls, stuffed in a discarded SFX PSU case (125x100x64mm). The board is configured with 36dB which cause some hiss which can be heard a meter away. The main draw of this model is that the capacitors can be easily replaced. The only difference between this and the more popular 3118 mono board is the slight bump between 100~300hz. Although not as great as, say LM1875, this chip can provide high quality sound without making a dent in the electric bill.
Mods were very minimal; 1. removal of terminal block for power 2. lowering gain to 20dB (60kΩ input impedance) thru removal of 75kΩ resistor at GVDD
Only the boards and stand offs were new and the rest are from my old parts bin so don't mind the bottle cap and ice cream tub cover
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Old 25th July 2019, 05:02 PM   #1425
lasithc is offline lasithc  Sri Lanka
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Quote:
Originally Posted by zeroFILL View Post
Let me suggest one more option, is Chinese XH-M190 board based on 2 TDA3116D2. I have bought 2 of this board, one V3 (which passed to my friend) and one V4 (just ordered and will be delivered in a next few days). I don't know exactly what is the difference between V3 and V4, but the XH-M190 V3 was sound good for me at the price of $7.5. It can play very well with an old IBM 16VDC/3.45A laptop adapter and I think it will fit your needs
Did you get the v4 board and how is it
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Old 30th July 2019, 02:19 AM   #1426
redjr is offline redjr  United States
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Originally Posted by PiotrL View Post
Hi Eric, can you share by any chance how the DIY community can find those ICEPower modules available for purchase?
Checkout Parts Express
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Old 2nd August 2019, 11:58 AM   #1427
Wardsweb is offline Wardsweb  United States
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Picked up a couple ALC0240-2300 modules from a buddy and built a pair that are switchable between stereo and mono block.

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Old 2nd August 2019, 12:11 PM   #1428
e_fortier is offline e_fortier  Canada
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Excellent work, congrats!
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Old 2nd August 2019, 03:40 PM   #1429
chermann is offline chermann  Austria
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Nice housing- which one is it?
sorry my stupid question - to switch from mono/stereo (bridged?) -i canīt see the switch



chris
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Old 2nd August 2019, 03:50 PM   #1430
Wardsweb is offline Wardsweb  United States
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Originally Posted by chermann View Post
Nice housing- which one is it?
sorry my stupid question - to switch from mono/stereo (bridged?) -i canīt see the switch
chris
The switch changes between:
Stereo - left and right inputs to left and right amp inputs
Bridged mono - left input to both left and right amp inputs

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