100VA will power between 50W and 100W of maximum output.
The disadvantage of the smallish transformer is the increased regulation. This does not reduce the maximum power output. But it does increase the voltage across the chipamp when either quiescent or playing quiet signals.
The down side of this is that the increased dissipation of the chipamp will make it run hotter.
The solution is easy. A bigger heatsink to keep the chipamp at the same temperature that the lower regulation transformer would achieve.
The solution for increased ripple due to the increased impedance of the smaller transformer is a bit more smoothing capacitance.
A commercial offering would not bother with either solution, all they want is maximum profit.
You have the choice. Be informed and make a choice that suits you.
The disadvantage of the smallish transformer is the increased regulation. This does not reduce the maximum power output. But it does increase the voltage across the chipamp when either quiescent or playing quiet signals.
The down side of this is that the increased dissipation of the chipamp will make it run hotter.
The solution is easy. A bigger heatsink to keep the chipamp at the same temperature that the lower regulation transformer would achieve.
The solution for increased ripple due to the increased impedance of the smaller transformer is a bit more smoothing capacitance.
A commercial offering would not bother with either solution, all they want is maximum profit.
You have the choice. Be informed and make a choice that suits you.
Well, so to test the amp, will be OK to use the 100VA toroidals 
after i collect some money and purchase an bigger one.
Btw in having some problems with the C4 and C5 Cap, i will try to see if have in stock other size from other kit that i purchased some time (i have a few at home that dont build yet).
if dont have it at home, i just need to curve the pin of the cap to try to reach the hole, right?
another one, the Blue terminals (the ones that have 2 holes to insert some wires), where i need to use it?
after i collect some money and purchase an bigger one.Btw in having some problems with the C4 and C5 Cap, i will try to see if have in stock other size from other kit that i purchased some time (i have a few at home that dont build yet).
if dont have it at home, i just need to curve the pin of the cap to try to reach the hole, right?
another one, the Blue terminals (the ones that have 2 holes to insert some wires), where i need to use it?
Indeed, C4/5 as we purchased them have lesser spacing between their leads than what the board has. They go in just fine if you bend the legs carefully with needle nose pliers.samsagaz said:
The terminal blocks are optional for use on the input and the LED. Some people like soldering directly others enjoy the terminal blocks... there is no specific need for them.
peter
Got my stuff!
Peter & Uriah
I just returned from an overseas trip and found my kits and extra parts waiting for me.
What a wonderful job you guys made putting this together - you set the bar pretty high for other group buys!
I am not sure if I should wait until I finish unpacking before I turn the soldering station on...
Thanks again!
Peter & Uriah
I just returned from an overseas trip and found my kits and extra parts waiting for me.
What a wonderful job you guys made putting this together - you set the bar pretty high for other group buys!
I am not sure if I should wait until I finish unpacking before I turn the soldering station on...
Thanks again!
noodle said:
Was yours the ILP trafo?
2 white leads, ONE red, black, yellow and blue?
Look like this?
http://www.diyaudio.com/forums/showthread.php?postid=1730705#post1730705
If not post a picture of the torid you have please.
No worries we WILL get you hooked up (pun intended)!!
Yesterday I brought the Rev_C to Mr. Gerald's for him to listen to it.
We took out a tube amp and put the Rev_C in it's place in his work shop system.
Source: Magnavox CD player rebuilt. Apparently the CD drawer mechanism is suppose to be good but the rest was all rebuilt.
Pre: Passive and tube 12au7 (or ua7) active
Amp: AES (Cary) set amp
Speakers: 6.5" two way, SS revelator mid-woofer, Seas softdome tweeter.
CD: Jennifer Warnes "The Hunter"
We listened to the system, swapped out the amp and listened to the same tracks again.
He liked the Rev_C more..
We swapped out the passive pre with the active tube pre and listened to the same tracks again..
We then swapped out the amps and put the tube amp back in..
That lasted 2 tracks and the Rev_C came back in...
Rev_C is killer for the money...
Then we went into his listening room and played the same tracks on his main system.
Well the Rev_C wasn't THAT good...
ML 39 cd, ML 4x1 amp, Kimber Monocle XL spkr cable to his three way 10" speakers..
We took out a tube amp and put the Rev_C in it's place in his work shop system.
Source: Magnavox CD player rebuilt. Apparently the CD drawer mechanism is suppose to be good but the rest was all rebuilt.
Pre: Passive and tube 12au7 (or ua7) active
Amp: AES (Cary) set amp
Speakers: 6.5" two way, SS revelator mid-woofer, Seas softdome tweeter.
CD: Jennifer Warnes "The Hunter"
We listened to the system, swapped out the amp and listened to the same tracks again.
He liked the Rev_C more..
We swapped out the passive pre with the active tube pre and listened to the same tracks again..
We then swapped out the amps and put the tube amp back in..
That lasted 2 tracks and the Rev_C came back in...
Rev_C is killer for the money...
Then we went into his listening room and played the same tracks on his main system.
Well the Rev_C wasn't THAT good...
ML 39 cd, ML 4x1 amp, Kimber Monocle XL spkr cable to his three way 10" speakers..
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