B&O ICEpower Digital Amplifier Modules
(Disclaimer: this site is not affiliated with B&O in any way -- it is a regurgitation of preliminary information supplied by the manufacturer at AES 107 September 1999)
18/02/02 The information here is stale, but being kept for historical reasons. For current information please visit ICEpower's website.
pictures used with permission from Bang & Olufsen ICEpower a/s. Note that these represent the original design. For current designs please visit the ICEpower website.
The development of this technology is well documented. I have reproduced a list from B&O of 21 papers pertaining to these amplifiers and their power supplies.
Note: i haven't found an official web site for these yet, although Dr. Nielsen was featured as one of the rotating personalities on B&Os site.
Specifications (edited) provided by ICEPower
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ICE250A |
ICE500A |
ICE1000A |
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| Output Power (RMS) |
2.7 ohms |
250 |
500 |
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|
4 ohms |
200 |
350 |
1000 |
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|
8 ohms |
110 |
200 |
500 |
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| Dynamic Range |
118 dBA |
118 dBA |
120 dBA |
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| Supply Voltage (single ended) |
48V |
65V |
100V |
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| Power Supply Rejection (PSRR) |
60 dB |
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| Output referenced idle noise |
A-weighted |
|
100 microV max |
140 microV max |
| Efficiency |
>92% |
>93% |
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| THD @ 250mW, 1kHz |
0.0005% |
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| THD+N @ all frequencies & powers |
<0.05% |
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| Size |
3.2"x3.2"x1" |
3.6"x3.6"x1" |
4"x4"x1" |
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| Efficiency (no heatsinks required) |
>92% |
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| Frequency Response (all loads) |
20Hz-20kHz +/-0.3 max/0.1 typical |
20Hz-5kHz |
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| IMD |
<0.003 typical |
<0.005 typical |
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| Full Power Bandwidth (-3 dB) |
40 kHz |
25 kHz |
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| Minimum Load |
2 ohms |
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| Output referenced idle noise (typical) |
75 microV |
80 microV |
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| Standard Features |
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send me an email if you have additional information or questions
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