Electrically speaking, for lower impedance load, the required voltage is lower so switching to high voltage will occur at higher power output.
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Outlaw 2220 Review (Monoblock Amplifier)
- Thread starter amirm
- Start date
Electrically speaking, for lower impedance load, the required voltage is lower so switching to high voltage will occur at higher power output.
I am not an EE, so I'll defer.
Do you agree that the 5 watt multi-tone test is not going to expose the harmonic distortions that may be occurring when the amp switches rails?
- Rich
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Yes but no cross talk, better cooling @ high power, can be located closer to the speakers, and they look cool.
Even vacuum tube amplifiers can use toroidal transformers, but the only one I can remember seeing is this AricAudio "Transcend" EL34 PP amplifier (from Aric Kimball). He states that he uses "Toroid power transformer for low EMI".
I looked at the front of my 2220 and could not find anything but the indicator light. And I know what it says in the manual...
FWIW if you haven't done so compare the 2220 with the previous generation 2200.
https://www.audiosciencereview.com/...s/outlaw-2200-m-block-amplifier-review.11403/
It's striking how similar the performance is with the major difference being the improved frequency response in the 2220 as Amir pointed out. You could almost chalk it up to variations off the production line.
My only regret, and I have been kicking myself for over a year, is that I didn't buy my three 2220 amps when Outlaw briefly had a 2020 holiday sale that offered the bundle price plus an additional discount for $270 for each amp, plus shipping. Oh well... He who hesitates is lost.
https://www.audiosciencereview.com/...s/outlaw-2200-m-block-amplifier-review.11403/
It's striking how similar the performance is with the major difference being the improved frequency response in the 2220 as Amir pointed out. You could almost chalk it up to variations off the production line.
My only regret, and I have been kicking myself for over a year, is that I didn't buy my three 2220 amps when Outlaw briefly had a 2020 holiday sale that offered the bundle price plus an additional discount for $270 for each amp, plus shipping. Oh well... He who hesitates is lost.
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OP
- Thread Starter
- #71
Yeh, I noticed that but was too lazy to override the default title for graphs.
OP
- Thread Starter
- #72
I have to check but it may be because I have put a DC filter in the measurement. DC can confuse AP sometimes and hence for the filter (> 10 Hz).
Amir, did you test the amp through the balanced or unbalanced input?
OP
- Thread Starter
- #74
All my testing was balanced as noted with "XLR" designation on the graphs.
OP
- Thread Starter
- #75
Someone asked about the gain. It is always in the dashboard:
As you see, it is 27.6 dB which is a bit lower than nominal 29 dB.
As you see, it is 27.6 dB which is a bit lower than nominal 29 dB.
I guess it's my vision as well as my hearing that is an issue. Sorry I missed it.
Still, 27.6dB should be plenty sufficient - given roughly 0.2V input for 5W output, this amp should be driven to full power by any DAC that can do 2V output.
The 2220 doesn't get hot at all. After playing music all day the amps are barely warm to the touch on top. I'm giving them two inches of space to the shelf above, one amp per shelf.
OP
- Thread Starter
- #80
I left it on overnight by accident and it was barely warm on top. So idle current is low. If it is class G, that is the reason for low idle dissipation.
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