High current amp search
Hello, so as the title says, I'm looking for a 200+ wats amp (8ohm) that will double it's power down to 2 ohms but importantly also check all the audiophile boxes so strong, articulate, fast bass, smooth resolving mid-range and extended non fatiguing highs. It's proving to be rather difficult because hardly any manufacturers list output into 2ohms. Budget is around 4000$ so I'm looking at mostly used. Besides something like the Krell FPB 300/400 CX which can be had for that much , what else can be recommended?
@rauliruegas Of course! The advice I give on forums tends to be generalized so if its taken seriously it will not lead to problems. In a smaller room than yours 100Hz could be problematic especially if the slope isn’t particularly steep.
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Maybe you should have read my post about the Krell FPB 600. You’re right though, the Krell’s power does not double at each halving of impedance. 970W @ 8 ohm should get 7760W @ 1 ohm, yet in reality it only managed 6000W. Here are the independent measurements: https://www.stereophile.com/content/krell-full-power-balanced-600-power-amplifier-measurements Any amp whose manufacturer specs don’t include a 2 ohm rating (not just a "stable into 2 ohm" note) should be considered suspect as far as being a high-current amp. That doesn’t mean such an amp cannot do a lovely job driving easy-to-drive speakers. It’s a question of choice.
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This... Measure it and the 8ohm output will be higher (messing up that perfect audiophile doubling).....But, they have to cater to the audiophile tribe who believe it is a high current amp only if the power perfectly doubles from 8 to 4 to 2 to 1 to to (facepalm)...... underrate for sale, it is...... 2 ohm dip, drop speaker in the trash can.... 1 ohm dip, drop speaker in trash can and take a flamethrower to it...especially in 2025....but, apparently the designer in his garage was some immaculate genius of sound with his 1 ohm dip goofbox. He claims glory when it is the electronics that carried his goofbox anywhere.
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@deep_333 a lot of speakers have a dip to around 2ohms, some that you and others probably think are quite sensitive, it's just that most manufacturers don't publish the impedance graphs of those speakers, all your ever see is "nominal impedance 4 ohms". No minimal impedance is mentioned either, unless it is complimentary. Usually it takes outside tests to find what those are. |
@lukaszwk An impedance drop upto 3.2 ohms is permissible for claiming a nominal impedance of 4ohm on the specification (IEC standard). If the manufacturer claimed his speaker is 4 ohms and his speaker dropped to 2 ohm or 1 ohm, he is also a liar and a fraud. Return it to him quickly and get your money back. Sue him for damaging your expensive amps and the mental stress he caused. Get him...
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