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Wharfedale Super Denton 3-way Bookshelf Speaker
captrajesh said:
How about this: Assembled IRAUD350 mono Power amplifier board Class D AMP board | eBay
Click to expand...

Oh boy, thats a bucket load of power. I surely wont be needing it. My speakers will fry before I am anywhere close to using its power.

Before anyone gets impressed by the power and pricing and bites the bullet, one should keep in mind that there are other costs to an amp which will be higher than its lower powered cousins. Bigger trafo, bigger heatsinks (with this one, you might need a fan), larger and higher value caps in the psu etc.:)
 
doors666 said:
Before anyone gets impressed by the power and pricing and bites the bullet, one should keep in mind that there are other costs to an amp which will be higher than its lower powered cousins. Bigger trafo, bigger heatsinks (with this one, you might need a fan), larger and higher value caps in the psu etc.:)
Click to expand...

There is beauty of this amps class D or class T, they are efficient >90%, need no fan, smallest heatsinks, some cases no heatsinks at all. They are cheap and small in size. On con side they emit switching noise which kills radio reception.
 
anujmishra said:
What does this mean? Is it mean that these class D amps cannot be used with AM/FM receivers?
Click to expand...

If I am right what Omishra means is that they inject noise back into the AC circuit. The result being that other devices especially rf based ones will pick up the interference and cause noise. If you try tuning a radio receiver you will get a motorboating sound, especially in MW and to a certain extent in SW in AM. FM is not affected.
 
gopib said:
If I am right what Omishra means is that they inject noise back into the AC circuit. The result being that other devices especially rf based ones will pick up the interference and cause noise. If you try tuning a radio receiver you will get a motorboating sound, especially in MW and to a certain extent in SW in AM. FM is not affected.
Click to expand...

You are correct! That's true for FM too if that station is weak or setup missing antenna. Not only all wires including ground but speaker wires also acts as transmitting antenna for this switching frequency residual in output.
 
doors666 said:
Oh boy, thats a bucket load of power. I surely wont be needing it. My speakers will fry before I am anywhere close to using its power.

Before anyone gets impressed by the power and pricing and bites the bullet, one should keep in mind that there are other costs to an amp which will be higher than its lower powered cousins. Bigger trafo, bigger heatsinks (with this one, you might need a fan), larger and higher value caps in the psu etc.:)
Click to expand...

Hi,

The major cost would be the cabinet and Courier charges for the components. But still if the performance is good, it is worth the effort and money.

N.Murali
 
Hi capt,

At Harish Reddy's house some months ago, I am not sure if srinisundar accompanied me.

N.Murali
 
Assembling it is quiet easy. One can purchase a good enclosure from the same seller for around 3700 which has the Front panel CNCed for the LCD. I have made a surround decoder in the same enclosure. Although the semiconductor based preamplifier sounds decent there are mant HATE forums about this chip online. For a DIY preamplifier nothing comes close to the pass designs (BOSOZ, B1 and BOZ).
 
Audiodoc said:
For a DIY preamplifier nothing comes close to the pass designs (BOSOZ, B1 and BOZ).
Click to expand...

Before buying the APs, I was seriously considering to make the Bride of Son of Zen which I've gathered is the best of the lot to mate it with the F5.

However the complexities involved in sourcing components and PCB, not to mention the trafo and cabinet (Then) put me off and I went in to buy the APs.
 
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