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#21 |
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diyAudio Member
Join Date: May 2001
Location: Tasmania, Australia
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the figures quoted are result of real world measurements across the load.
The only explanation would be supply regulation, as the DC voltage on the supply caps drops to about 85 volts under load... The way Crown achieve power o/p approching 4 times the power o/p is because they use tightly regulated SMPS... |
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#22 |
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diyAudio Member
Join Date: Nov 2004
Location: L'Assomption, QC
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#23 | |
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Warp Engineer
On Holiday
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Quote:
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#24 |
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diyAudio Member
Join Date: Nov 2001
Location: Harlowton, MT, USA
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Also, here's an example that proves that more than 2x the power is attainable using bridge mode (and it's not class D). This is the power ouput of Alpine's MRV-1507:
450W x 2 (4 Ohm Stereo) 1500 x 1 (Bridged 4 Ohm) This is the max power, RMS is (they claim) 225W/900W respectively, which also proves the point, even if that 900W figure is a slight exaggeration. Perhaps it is all in the power supply, an Anthony has suggested. |
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#25 |
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Warp Engineer
On Holiday
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I agree it is hugely dependent on the capabities of the power supply .... also most the specs for car amps are voltage limited not current limited .... mind you, if your bridging 2 amps to achieve 4 times the power then each of them must supply only double that of their normal output.... with a BIG power supply and plenty of o/p devices, this shouldnt be too much to ask.... after all, this is the equivalent of running the amp into half the impedance ... upto a point, this is quite doable.
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#26 |
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diyAudio Member
Join Date: Nov 2004
Location: L'Assomption, QC
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Hi aussiamps,
If you use electronicsworkbench, and/or Multisim, i would like to send you a conceptual bridging schematic for your consideration...and comment?!? |
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#27 |
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diyAudio Member
Join Date: May 2001
Location: Tasmania, Australia
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#28 | ||
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Warp Engineer
On Holiday
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Quote:
So i stand by my earlier post .... Quote:
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#29 |
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diyAudio Member
Join Date: Nov 2001
Location: Harlowton, MT, USA
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I thought we were talking about the total power of the two amps all along. I guess not.
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#30 |
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Warp Engineer
On Holiday
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Well kilowatt.... you and i were but it appears Anthony was not.
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