Tweaking a plate amp - PE 300-794

Discussion in 'Archived Threads 2001-2004' started by Peter Jessee, Feb 27, 2002.

  1. Peter Jessee

    Peter Jessee Stunt Coordinator

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    After an e-mail conversation with John Kreskovsky about high-pass filtering the line output of the Parts Express 300-794 250 watt plate amp, I'm preparing to change some resisters to provide a 12 dB/octave high-pass at around 90 Hz.

    Now I'm wondering if it would be worthwhile to upgrade the components in the HP circuitry, since all the signal for the front left/right speakers will be passing through these components. Replacing the stock ceramic capacitors would require 4 ea. 0.1 uF/100 volt and 2 ea. 0.7 uF/50 volt capacitors, presumably polypropylene, or at least good NPE's. Would it be necessary to upgrade the capacitors in the LP section as well? How about the Op-Amps?

    My system includes a Denon AVR3300, 5 NHT SuperOnes and an Adire Rava. I'll have to add separate amps now, and am considering a Signature 2.1 (cheaper) or a Parasound HCA-855A or -1205A (better sound). With equipment of this quality, would upgrading these components provide noticably better sound?

    I've never gotten to this level of tweaking before, but I'd hate to spend $500-1000 on a new amp and have cheap parts holding back the sound quality. Do I need to worry about this?

    Peter
     
  2. Mike_A

    Mike_A Stunt Coordinator

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    why not just let your denon handle the bass management and just use the sub out to your plate amp? then the amp's high pass filter won't be a factor at all.
     
  3. Peter Jessee

    Peter Jessee Stunt Coordinator

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