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Playitloud

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    NSW
  • Country
    Australia
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    Alan

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  1. Well, I knew I'd probably light up the tech gurus & others. Yes, I was inferring to the Amp's (working) output impedance & input impedance of the speakers. Whilst the exact science (static resistance of the Amp's output stage) & calc's may not directly apply, due to varying frequencies etc, most manufacturers will still quote a range within which their amplifiers will more happily match the speakers; thus providing greatest efficiencies. That is all I meant, my sincere apologies to the electronic purests! Head down, Alan...
  2. JkSpinner, I did Electronic Engineering years ago. One crazy thing that has stayed within my head's old grey matter is that for amplifiers, maximum power output is achieved when input impedance & output impedance are equal. Meaning if they are not you will either have losses or risk overdriving your speakers. Bit like having odd sized wheels on your car, they'll still turn but not always efficiently. I may get shouted down but that's the simple way that I've always looked at it. Regards, Alan...
  3. Peterepeat (your name must be on your feet?), I also have a Jensen SPX19 & have had for many years & several houses. Great sub & it usually runs at well under 50% maximum volume for a house shaking experience. Check what cables you have connected, if any, & also the switch positions, I can see that the earthing has been suggested, which is also a good start. I hear the loud hum if the opposing analog cable end has the centre core touched (by human hand). All that means is that the input is sensing some small electrical signals (i.e.; millivolts). If you're not su
  4. Quark, Thanks for the interest and also for taking your time to reply. I would say you're right but also thought it warranted an enquiry with the learned masses. Many thanks, Alan...
  5. Hi there fellow audio buffs. Well I recently acquired a (too good to be true) Marantz SR7009 deal via an online sale source. The AVR had only been powered once, batteries hadn't even been installed in the remote. Long story short, I noticed that as soon as it arrived that whilst the AVR certainly appeared brand new, it was obviously a USA-Canada model; therefore requiring a 120VAC 60Hz supply. I did not power up the unit until I bought a transformer with 30% VA headroom to power same. Unfortunately when I powered the AVR (@120VAC 50Hz) it did initially appear to work however when I
  6. Hi there all, I have been a avid audiophile (a somewhat loose & generic term) for >50years. I love large, loud sounds that must also encompass high end (kHz) quality. Included in my appreciation, is a quality home theatre arrangement (mine &/or others). Look forward to hearing & learning from other sound smitten souls! Happy listening!
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