Re: Who reviews the reviewers in the Audio Industry?
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Rich, regarding SMPS vs. LPS, I have a 1000-8 coming that will be used with my actives. That amp is spec'd to give me 375 dynamic Watts on all eight channels simultaneously into 4 Ohm loads from a 120VAC/15A outlet. Show me an amplifier with an SMPS that can do that. Heck, show me an amp that can do that!
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: Who reviews the reviewers in the Audio Industry?
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Joined: Sep 2009
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connoisseur
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Mojo, are you telling me it is impossible to design a switching supply to be as good as the supply in a ada1000?
Last edited by rrlev; 10/29/19 12:28 AM.
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Re: Who reviews the reviewers in the Audio Industry?
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Joined: Jan 2007
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shareholder in the making
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shareholder in the making
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It is impossible to design a switching power supply that will result in 3000 dynamic Watts from a 120VAC/15A outlet.
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: Who reviews the reviewers in the Audio Industry?
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Not if you add a flux capacitor, it isn't.
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Re: Who reviews the reviewers in the Audio Industry?
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1.21 jiggawatts with that puppy!
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: Who reviews the reviewers in the Audio Industry?
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Joined: Sep 2009
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Not if you add a flux capacitor, it isn't. Craig, normal caps would probably do the trick ... no time travel needs to be invoked
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Re: Who reviews the reviewers in the Audio Industry?
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Joined: Jan 2007
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shareholder in the making
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Nope. Compared to LPSs, SMPSs give you high continuous power with high efficiency in a small package but no dynamic headroom.
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: Who reviews the reviewers in the Audio Industry?
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Not if you add a flux capacitor, it isn't. Craig, normal caps would probably do the trick ... no time travel needs to be invoked Rich - What is this "need" stuff? We aren't commies. We do want stuff!
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Re: Who reviews the reviewers in the Audio Industry?
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Joined: Sep 2009
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Nope. Compared to LPSs, SMPSs give you high continuous power with high efficiency in a small package but no dynamic headroom. Dynamic power comes from a combination of higher rails and a bit of storage
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Re: Who reviews the reviewers in the Audio Industry?
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Joined: Jan 2007
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shareholder in the making
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To measure continuous power, you apply a continuous voltage and increase its level until clipping is observed into a known load. Say you apply 2Vrms into a 4 Ohm resistive load and observe clipping. That's a total of 1W continuous power (2*2/4).
To measure dynamic power, you apply a transient voltage into the same load. Say you apply 4Vrms for 10 cycles and observe clipping in the last 3 cycles. You could then say the dynamic power is 4W (4*4/4) for 7 cycles. If those cycles you applied was a 60Hz mid-bass, you could say the dynamic power is 4W for 117msec (16.7 msec/cycle * 7 cycles). More accurately, I would say I can support 4W into a 4 Ohm resistive load for seven, 60Hz cycles.
1W of this dynamic power comes from the wall socket and the remainder from charge in the storage capacitors.
In this example, the dynamic headroom is 10log(4/1)=6dB. That's a damned impressive LPS!
I would also keep the power supply voltage fixed at say 120VAC for all tests.
Last edited by Mojo; 10/29/19 04:28 AM.
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