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17 inch Component Width

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  • 17 inch Component Width

    I thinking about building a pre-amplifier and I am seeing allot of companies offering products that are less the 17" standard width that has been around for decades. I can understand the motivation to go smaller with most on the internals getting smaller there is no reason to have all the extra air space that increases enclosure, packaging and shipping costs. I think some people would stack there 17" wide amplifier on top of the pre-amp and this made sense as the amp was the hotter running component. The thing I have noticed with some of these new devices is they don't follow any standard width. I guess some don't have to because they are integrated amplifiers with built a built in DAC and Bluetooth; I think it's fine for system with 30-40 watts per channel.

    I'm thinking about going with 14" wide and my Pre-Amp would have an internal DAC and Bluetooth receiver. I am considering building my own for the experience and to make something that fits my needs, I don't what to have balance or tone controls to keep the single path simple but I do want to have a variable loudness control - I have a Denon receiver powering my living room system and really like the loudness control feature, I will also incorporate a discrete resistor ladder network with relays for the volume control - probably for the loudness control also. On thing I haven't decided on is the pre-amp circuit; do I just use Opamps, Class A biased Opamps or fully discrete with transistors. I have been looking at the Schematics for the Adcom GFP-565 and 750 and the Parasound JC-2 circuits and these are all done differently.

    Anyone have any thoughts or suggestion on my project?

    Thanks,
    Shawn

  • #2
    I know for rack mount equipment the standard has always been 19" and I think it still is for home audio with rack mount ears and pro gear.

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    • #3
      If you need a chassis...

      http://stores.ebay.com/pimetalproducts

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      • #4
        Lots of options here. One option is A LM1036 IC can provide Loudness, balance, bass and treble controls (though I know you said you needed only Loudness). Another is this op-amp ciruit for loadness only:

        http://www.zen22142.zen.co.uk/Circui...o/loudness.htm

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        • #5
          Originally posted by Squidspeak View Post
          I know for rack mount equipment the standard has always been 19" and I think it still is for home audio with rack mount ears and pro gear.
          Yup
          "Not a Speaker Designer - Not even on the Internet"
          "If the freedom of speech is taken away, then dumb and silent we may be led, like sheep to the slaughter."

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          • #6
            Originally posted by Squidspeak View Post
            I know for rack mount equipment the standard has always been 19" and I think it still is for home audio with rack mount ears and pro gear.
            That's the total width on the face plate, ear to ear. The body of the main chassis is 17".
            Electronics engineer, woofer enthusiast, and musician.
            Wogg Music

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