Thanks, at what minimum uF in the AG line does that ESR fall, is it the 33000?
EDIT: Also are you using ALPS or a stepped Attenuator, or just the original volume pot?
What changes are urgently needed on the TA3020 ? I own one from hifimediy but still not had the time to check it up. Also it needs two heatsinks for the mos-fets.
t3 humm
I received my T3 set some 2 weeks ago. I used one S-350-48 power supply and was disappointed with the humm. I would not call it "light noise", the humm is much too loud not to be noticed, it makes the amp unusable for me. Too bad that both boards apparently need their own power supply.
Maarten
In my test, 2x T3 can work under 1 SMPS with very light noise. If your T3 still have the bead(B1) on board, I suggest replace it with a wire short. also I suggest remove c10 on the bottom side.
By the way, I actually have new board on the way, it's called T3_V2, which is stereo version of T3, and the board build the PSU and protection circuit in. So it's big board 175*122mmI will post it when I get the PCB.
I received my T3 set some 2 weeks ago. I used one S-350-48 power supply and was disappointed with the humm. I would not call it "light noise", the humm is much too loud not to be noticed, it makes the amp unusable for me. Too bad that both boards apparently need their own power supply.
Maarten
I believe that if you do the modifications proposed, then the hum can be fixed. More info here at 41Hz: 1 Power Supply, 2 Amps. Possible?
many people use the hole marked GND next to power terminal.
edit: oops, did not see Yubing response.
I am looking for an amp to drive 8ohm 110dB sensitive CD with horn for my HT.
Reading the last part of this thread plus some other sites it looks like these amps would be quiet enough to do it.
Coupling caps on the output will be used.
What version should I choose? I plan on powering it with a 24V SMPS.
Sitting 2m from the speakers I doubt I will be needing any serious power so I have been looking at the T1.
Also how low voltage can the T4 take when transformer powered?
Reading the last part of this thread plus some other sites it looks like these amps would be quiet enough to do it.
Coupling caps on the output will be used.
What version should I choose? I plan on powering it with a 24V SMPS.
Sitting 2m from the speakers I doubt I will be needing any serious power so I have been looking at the T1.
Also how low voltage can the T4 take when transformer powered?
Been thinking a long time about trying out a tripath amp. About ready to go with the T3 but needing two power supplies is less than ideal...and T3 is sold out. Here are some questions:
- I see that hifimediy will now be distributing the connexelectronic power supplies. Wondering if the dual rail capability of the SMPS300R would offer a solution to the hum issues of using a single PSU with dual mono T3?
- Are there going to be more T3 available? If so, when?
- Is there going to be a stereo T3? If so, when and what is the projected price point?
- Status
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