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Which amp for my Tempest?

Discussion in 'Archived Threads 2001-2004' started by Nathan J, Sep 10, 2002.

  1. Nathan J

    Nathan J Stunt Coordinator

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    The one at parts express? (300 -794) or the adire AVA250?


    The adire is more money.....is it worth it?
     
  2. Dustin B

    Dustin B Producer

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    Depends. Shipping narrows the gap (provided you are going to get the Tempest and not the Dayton DVC15"). The AVA250 now has a switch to defeat the crossover which is a good thing. The AVA250 comes with the rumble filter at a nice setting. The PE300-794 now comes with the rumble filter disabled I believe, so if you want the rumble filter you have to swap out two resistors.
     
  3. Chris Tsutsui

    Chris Tsutsui Screenwriter

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    Here's another consideration...
    $80 for a 120 watt plate amp from Partsexpress. You'll only lose 3.19 decibels of max output which is barely noticeable.
    That PE amp is $120 while the Adire amp is $180... how would shipping narrow the gap of $60?
    I'd go for the parts express 250w one [​IMG]
     
  4. Nathan J

    Nathan J Stunt Coordinator

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    Parts Express it is[​IMG]
     
  5. Dustin B

    Dustin B Producer

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    It does narrow the gap, there still is one though. I guess I'm just used to being a CDN ordering from the states. Shipping and brokerage are a real concern for me as they add up fast.
     
  6. Kyle Richardson

    Kyle Richardson Screenwriter

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  7. Nathan J

    Nathan J Stunt Coordinator

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    I am definitely getting at LEAST a 250 watt amp for a 15" sub....
     
  8. Ryan Schnacke

    Ryan Schnacke Supporting Actor

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    "The PE300-794 now comes with the rumble filter disabled I believe, so if you want the rumble filter you have to swap out two resistors. "

    No, the 300-794 has the boost disabled. The rumble filter is still intact. This is done by setting the Q of the filter to 0.7 giving you a Butterworth alignment. The boosted filters have Q > 0.7

    In the case of the 300-794 the cutoff frequency is 19.4Hz. You could change this cutoff frequency and maintain the Q = 0.7 by changing the resistor values but keeping R27 = 2*R26. If anyone needs resistor values for a particular boost and frequency just ask - I've built a spreadsheet that calculates them for me.
     
  9. Nathan J

    Nathan J Stunt Coordinator

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    I just bought the -794......thanks for the help.
     

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