michael hurd Posted July 17, 2008 Share Posted July 17, 2008 mdeneen: "Clipping is easy to hear, it's no challenge to be able to set the amplifier volume at a non-clipping level." Depends on the amp... and how it behaves during clipping. It is easier to tell in the midrange and HF.... not easy to tell in the LF. In fact... I would put money on it that you couldn't tell when an amp is clipping on a subwoofer, based on my experiences. Quote Link to comment Share on other sites More sharing options...
michael hurd Posted July 17, 2008 Share Posted July 17, 2008 You don't need concert levels to clip an amp driving speakers of 97 db efficiency. I clipped an amp capable of 550 wpc into an 8 ohm load, into RF 3II's in stereo. Since the RF3's dip down in impedance, the power delivered is higher than stated. Using an average of 5 watts input ( steady state as observed on a led power level meter ) drums clipped the amp. Quote Link to comment Share on other sites More sharing options...
Don Richard Posted July 17, 2008 Share Posted July 17, 2008 Using an average of 5 watts input ( steady state as observed on a led power level meter ) drums clipped the amp. Drums create sounds of a brief, transient nature. It is probable that 20+ dB peaks (referenced to the average level) exist in recordings with a forward presentation of the drums. Although Khorns are very sensitive loudspeakers they really come to life with 100 watts or more of amplifier power when playing such recordings. Quote Link to comment Share on other sites More sharing options...
seti Posted July 17, 2008 Share Posted July 17, 2008 Artto, I just noticed you managed to own a pair of Luxman tube amps. Wow.... I have been an Airtight fan for quite some time and the luxman tube gear always looks top notch. Terry has a stereo luxman I keep nagging him to get up to snuff. Anyhow if your looking for a quad there are two on ebay right now with a BIN of $725ea. Which I think is a damm bargain.... Sorry to side track this thread. Quote Link to comment Share on other sites More sharing options...
michael hurd Posted July 17, 2008 Share Posted July 17, 2008 Using an average of 5 watts input ( steady state as observed on a led power level meter ) drums clipped the amp. Drums create sounds of a brief, transient nature. It is probable that 20+ dB peaks (referenced to the average level) exist in recordings with a forward presentation of the drums. Although Khorns are very sensitive loudspeakers they really come to life with 100 watts or more of amplifier power when playing such recordings. Amen! People that don't believe they are clipping their amplifier are welcome to believe it.... but I am sure a lot of people are in denial about many things... Quote Link to comment Share on other sites More sharing options...
TNRabbit Posted July 17, 2008 Share Posted July 17, 2008 To produce clipping into my RF-83s with my 400wpc Sunfire amp, I have to be at a level that makes my ears bleed & sterilizes anyone within 250 feet... [H] Quote Link to comment Share on other sites More sharing options...
michael hurd Posted July 17, 2008 Share Posted July 17, 2008 Depends on the source material. And no... it is possible to clip with lower average levels. Think "dynamic" or peak levels. Quote Link to comment Share on other sites More sharing options...
michael hurd Posted July 17, 2008 Share Posted July 17, 2008 What to you is reasonably priced? There has been PL9.0's on eBay for $ 2000 BIN. That is 9 kw of power, folks... 90 pounds of 4 step class H power. Quote Link to comment Share on other sites More sharing options...
JJkizak Posted July 17, 2008 Share Posted July 17, 2008 Wow!, And I thought 1kw was a lot. I can't pick up 90 pounds anymore so I'll let that one pass. JJK Quote Link to comment Share on other sites More sharing options...
jacksonbart Posted July 17, 2008 Share Posted July 17, 2008 Can a single normal wall outlet deliver 9 kilowatts safely? Quote Link to comment Share on other sites More sharing options...
mike stehr Posted July 17, 2008 Share Posted July 17, 2008 "These projections are accurate only if the speaker in question has purely resistive impedance." Uh.....ok..... Quote Link to comment Share on other sites More sharing options...
Islander Posted July 17, 2008 Share Posted July 17, 2008 Those PL9.0s were discontinued due to power supply problems that showed up in some units, but not in others. The company admitted it was unable to detect and correct the source of the problem (very commendable and honest of them, IMO) and decided to stop making the PL9.0 and the PL6.0. More info here: http://srforums.prosoundweb.com/index.php/t/13570/0/ A couple of the posters on that site mention that this high power must be treated with great respect... Quote Link to comment Share on other sites More sharing options...
Islander Posted July 17, 2008 Share Posted July 17, 2008 Can a single normal wall outlet deliver 9 kilowatts safely? A single normal home 15 amp circuit, regardless of number of outlets, can only deliver 1.8 kilowatts.However, many modern amps seem to be rated to draw less than their maximum output. For example, my 1000-watt amps (500Wpc x 2) are rated at 350 watts on the back and have a UL sticker, so I guess at least one approval board engineer thought that sounded right. Quote Link to comment Share on other sites More sharing options...
Guest " " Posted July 17, 2008 Share Posted July 17, 2008 " A single normal home 15 amp circuit, regardless of number of outlets, can only deliver 1.8 kilowatts." If you need more and have a full run you can have the outlet convert to 220 pretty easily and have the associated change made on your amps. Quote Link to comment Share on other sites More sharing options...
michael hurd Posted July 17, 2008 Share Posted July 17, 2008 The PL series fromthe 2.4 and up ( I think... unless it is the 4.0 and up ) have a 30 amp twist lock plug. With 220v, the PL 9.0 delivers the goods. Quote Link to comment Share on other sites More sharing options...
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