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Everything posted by SpeakerPower

  1. Confucious say, "Man with two watches never know what time it is"
  2. The SP2-1400 is not bridgeable but can run a dual voice coil driver with one 700W amp per coil. The footprint is about 11 x 11". Your cabinet is smaller than that? What dimensions would fit? Later this year I will have a 1200W amp with the same feature set. It will probably be the same width as the SP1-700; 7.2" and taller, about 14" vs 10.75"
  3. Right on all counts. Regarding the price difference, it amazing how many HT features you can add in when you not paying for very heavy and expensive Powercon connectors and such that HT does not care about.
  4. Yea but its WAY better than the 1995 web site it replaced! Actually it is a work in progress and more info will be added soooon. The DP has no DSP, just a dataport connection to the QSC Qsys DSp. The HT has knobs for HT specific functions implemented in the DSP.
  5. Ricci is right. And rails typically will sag as current ramps up. I've never seen higher maximum voltage at lower load impedances either. brian
  6. Good job on your testing! It has been a pleasure to interact with you during the process. I feel you have been very fair and well grounded in reality. The results are about what I expected. The K20 has a higher voltage power supply so I expected it to take the honors on the burst test and it did. The SP2-12000 is not your average amplifier designed for light duty cycles and higher frequencies. It shines at very low and infrasonic frequency performance and high duty cycles. It takes special testing to reveal this performance. My long term sine wave testing is done a single frequency at a time. The initial input level is set to get the maximum undistorted short term power level. Then I graph the output power versus time. This allows you to see how the amp loses power at lower frequencies, how long it holds full power before it cuts back, how smoothly it cuts back (some go into oscillation, some cut off) and what power level it eventually settles at. In your test, the back and forth of which amp is higher may be due to the time constant of the protection circuits interacting with the sweep rate of the test signal as the impedance changed in the load. I don't mean to criticize; it just demonstrates how hard it is to test this stuff.
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