Pro Audio Asylum

• Re: Paging Bob Lee (QSC) - Bob Lee (QSC) 11:23:12 08/29/06 (3)
  In Reply to: Paging Bob Lee (QSC) posted by johnvb on August 28, 2006 at 18:11:24:

  The RMX series is entry-level. Conventional power supply, noisier fan.

  The PLX2 series is higher-level. Switch-mode power supply, lower noise and distortion.

  -Bob
  
  

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  • Re: Paging Bob Lee (QSC) - Chris 18:35:05 09/09/06 (1)
    In Reply to: Re: Paging Bob Lee (QSC) posted by Bob Lee (QSC) on August 29, 2006 at 11:23:12:

    Hi Bob,
    I just picked up a rmx 1450. It is very nice, drives my MMGs very nicely... The only thing I cannot live with is the fan noise. Is there a way to change that? WHat do I need to know to about the stock fan to find a replacement? Is it really bad if I actually take it out? I run my MMGs at levels that are not very demanding on the amp. Many thanks in advance for your advices.
    
    

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    • Re: Paging Bob Lee (QSC) - Bob Lee (QSC) 09:43:30 09/14/06 (0)
      In Reply to: Re: Paging Bob Lee (QSC) posted by Chris on September 9, 2006 at 18:35:05:

      I might have a free solution. Where are you located, and can you give me the first four digits of the amp's serial number?

      -Bob
      
      

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  • Thanks Bob - johnvb 11:55:38 08/29/06 (0)
    In Reply to: Re: Paging Bob Lee (QSC) posted by Bob Lee (QSC) on August 29, 2006 at 11:23:12:

    I'll see if I can give one of those PLX2s a try!
    
    

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• Thanks guys - johnvb 09:39:05 08/29/06 (1)
  In Reply to: Paging Bob Lee (QSC) posted by johnvb on August 28, 2006 at 18:11:24:

  I have had some (good and bad) experiences with home to pro level matching, so I know what to expect. As far as the fan noise, I have the option of placing the amp in an adjoining closet, or taking on one of the "fan mods" that others have done to their home-based pro amps, to reduce noise.

  Is it true that the pro amps using the older conventional class "A/B" design would actually be better (cleaner) than the newer class "H" types, in my case? Read somewhere that the latter may be more acceptable to RF nasties.

  This amp is going to sit on a stand, and go nowhere, so weight is not an issue.
  
  
  

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  • Re: Thanks guys - Bob Lee (QSC) 11:25:37 08/29/06 (0)
    In Reply to: Thanks guys posted by johnvb on August 29, 2006 at 09:39:05:

    > Is it true that the pro amps using the older conventional class "A/B" design would actually be better (cleaner) than the newer class "H" types, in my case? Read somewhere that the latter may be more acceptable to RF nasties. <

    In most class H applications, it is just a higher-efficiency version of class AB. So my answers would be "not true" and "what you read is wrong."

    -Bob
    
    

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• Re: Paging Bob Lee (QSC) - STUART 06:10:14 08/29/06 (4)
  In Reply to: Paging Bob Lee (QSC) posted by johnvb on August 28, 2006 at 18:11:24:

  A pro amp is gonna be noisey man

  If you like the sound of a cooling fan running in the backround
  while your trying to enjoy something at a lower level in your
  living room then have at it

  
  
  
  

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  • Re: Paging Bob Lee (QSC) - oldroadie 11:52:54 08/29/06 (3)
    In Reply to: Re: Paging Bob Lee (QSC) posted by STUART on August 29, 2006 at 06:10:14:

    There's always the Crown K1 and K2.
    No fan.
    
    Tom
    
    

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    • Yes, but I'd have to get - johnvb 12:01:29 08/29/06 (2)
      In Reply to: Re: Paging Bob Lee (QSC) posted by oldroadie on August 29, 2006 at 11:52:54:

      a really good deal on a used one.

      For that much $$$ new, I can get one of those audiophool amps. (Actually already have one, an excellant Aragon 8008BB)

      Where's tha best place to look for used pro amps?
      
      

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      • Re: Yes, but I'd have to get - STUART 06:20:38 08/30/06 (1)
        In Reply to: Yes, but I'd have to get posted by johnvb on August 29, 2006 at 12:01:29:

        Any one of these used amps on this page will out do most any pro amp
        in sonic quality for home use

        Link below

        I have purchased stuff from Jeffs and they are very good and you can
        trust your getting good gear at an affordable price

        
        

        • http://cgi.audiogon.com/cgi-bin/search2.pl?seller&Jsv   (Open in New Window)

        
        

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        • Re: Yes, but I'd have to get - Bob Lee (QSC) 10:09:27 08/30/06 (0)
          In Reply to: Re: Yes, but I'd have to get posted by STUART on August 30, 2006 at 06:20:38:

          With any good pro amp, the sonic quality depends on the input signal's quality. The amp's job is not to make it better or worse.

          -Bob
          
          

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• Re: Paging Bob Lee (QSC) - Bill Fitzmaurice 06:05:39 08/29/06 (0)
  In Reply to: Paging Bob Lee (QSC) posted by johnvb on August 28, 2006 at 18:11:24:

  Before considering a pro amp be sure your electronics have the required configuration to drive it, both in the connections and the output level.
  
  

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