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Alpine PDX?

Old 01-29-2007, 09:51 AM
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Alpine PDX?

I'm about to upgrade the amplifier in my car. I am going to go Alpine but am undecided on the series. I'm looking at the V-series (low end) and the PDX (high end) I am slightly confused as the specs of both amps are very comparable other than the SNR on the low end (yes low end) is higher. Is there a big advantage to the PDX othe than the regulated power?

P.S. I am looking for two mono's and a four channel.
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Old 01-29-2007, 11:22 AM
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Physical size and efficiency (compared to a typical class AB) are the PDX strong points.
Price is a low point and unless the two above reasons are of the utmost concern they're not worth the big pricetag IMO.
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Old 01-29-2007, 11:24 AM
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Apples and Oranges. The PDX amps are in a different class altogther. The V series really dosen't have a big power mono amp, but the PDX amps do. If your on a tight budget I would stick the the V series though. PDX can get expensive.
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Old 01-29-2007, 11:29 AM
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Thanks fella's. For the mono I'm toying between the PDX 600.1 (600rms at 2-4 ohms) and the V series MRPM850 (500 at 2 ohms and 800 at 4 ohms) and the 4 channel I'm undecided between the 70x4 V series and the 100x4 PDX. I'm upgrading from 40x4 so both will be an improvement. Will SQ be similar?
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Old 01-29-2007, 12:09 PM
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SQ should be similar. The advantage to the PDX series is due to their full range class D ICEpower circuitry that they employ. This has allowed them to shrink the size of the amplifier, maintain power and not need to worry about heat as compared to a regular class D amplifier. This is Alpine first year with these types of amps, however it has been proven as Eclipse has used this amp topology now for 3 years. Pioneer Premiere amps also use this same very type of circuit topology and with the start of the 07 season coming, expect more companies to embrace it as well. While I have not played with the PDX series, I have played with the Eclipse for the last 3 years and have been thoroughly impressed by what they offer.
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