We have stick in ground too🙂 But single phase and neutral to our wallsocket 😀
Norway has earth floating between two phases to their wallsocket.
Or something like that 🙂
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I concur that IME, the YBDZ sounds great stock. (Mine are still bone stock - although I have parts to mod them, have not had enough reason to mess with it). If you have $50, get the SMSL TPA3118 like Von Ah did and you have a finished boxed amp that sounds great stock.
If I were to mod my YBDZ's it will be in this order:
1. qnty 2 x 330uF 25V Pansonic SEPF OSCON's for power rails, 470uF 35V Panasonic FC's for power supply input decoupler.
2. 330pF and 10R bootstrap snubbers
That's it!
Thanks, Xrk971! I knew you would come through. I like that SMSL unit but for my friends they like my idea of putting them in these book decorator boxes so they are unassuming on someone's desk. This one isn't the best example but it gives you a good idea (mine has a nice gilded antique look):
http://www.michaels.com/artminds-paper-mache-book-box/10329016.html#q=book+box&start=3
http://www.michaels.com/artminds-paper-mache-book-box/10329016.html#q=book+box&start=3
I followed von ah and picked up the SMSL TPA3118 finished box. This is my first Class D amp - sounds OK out of the box to my ears. Less "musical" than the '80s vintage Denon solid state integrated that it replaced. Plenty of clarity. Still running with the supplied 12V brick. Case does not even get warm. Slight power-off click, but no thumps. DC offset is around 1mV. I'm impressed for such a small and efficient form-factor.
BK
BK
Try a 19 volt laptop brick. It will make it more musical as you say. I think there is just more power and the higher voltage reduces HD.
Not sure if there is a consensus; someone asked the same question a few posts back, one response was given:
I haven't heard either of those, but I do have a Ybdz ("Wiener") board, and think it sounds really good in stock form.
For a stock board, you might want to take into consideration the target speaker impedance, which would imply different output filter component values. The Ybdz board's output filter is optimal for 8 ohm speakers.
I think (just judging by pics) the Audiobah board's output filter is optimal for 4 ohm speakers.
Not sure about hiampmini. Note this board is sold as a solder it together yourself kit, but I think he might (?) also offer a pre-built board. You could probably email him and inquire about output filter component values.
Audiobah offer is 8 ohm (22uH inductors)
Hiamp 10uH 4 ohm, soldered too, also offered on Ebay (most of time)
Hiamp 10uH 4 ohm, soldered too, also offered on Ebay (most of time)
Yes, these will be for 8ohm speakers, so the Ybdz would probably be best, and for $15 shipped, it's a no-brainer. Thanks for the input!
2. 330pF and 10R bootstrap snubbers
That's it![/QUOTE]
I need a some clarification.
The 330 pf and 10R are in series. ?
You connect the 330pf to the + terminal of the bootstrap caps and the 10R to the ground of the board.
Is this correct.?
will a half watt 10 R and a 100 V caps do for this application ?
thank in advance
kp93300
That's it![/QUOTE]
I need a some clarification.
The 330 pf and 10R are in series. ?
You connect the 330pf to the + terminal of the bootstrap caps and the 10R to the ground of the board.
Is this correct.?
will a half watt 10 R and a 100 V caps do for this application ?
thank in advance
kp93300
If you look back in the thread a short way you will find a circuit diagram showing the details you need.
The board I made its a simple 4 channel input selection by relays... I attach the schematic I followed for the pcb design. That board is also suitable to use with an arduino board. There are many things one can do with arduino, ad a IR remote, motorized pot, and lcd...
I'd love to have one of these relay input selection boards for my project. Been looking for a 4 input one. Any chance on getting a group buy going? Anyone else interested? I know nothing about getting pcb made but this seems great. Exactly what im looking for.
Another option instead of relays, I use a MAX9729 part, it works great, it can be used as a channel selector, bass boost, headphone amp that works great as a pre-amp for the TPA3100D2 that I used before the TPA3116 parts were available.
Cheers
Rick
Cheers
Rick
Hi,
Is there any specific change need to make on the MAX9792 circuit if use it as a pre-amp?
Thanks