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abpurdom

Member Since 04 Mar 2011
Offline Last Active Apr 05 2011 12:37 AM
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Posts I've Made

In Topic: best power for new advent loudspeaker a-3's

04 March 2011 - 07:21 PM

Do you mean did I get the ones with the nice cabinets? If so, yes, and they're in really great condition. I know I overpaid ($375 plus shipping, ouch), especially by the standards of all the folks on this forum who seem able to find them for almost nothing, but I wanted ones that were in really good condition and I expect to use them for a very long time so whats a few bucks over ten years or more? At least that's my rationalization.


Nice. Were you lucky enough to get the bullnose/real veneer ones? I believe the Kenwood will be fine, but maybe member PeteB will answer the thread. He's done a lot of work with large Advents and has a good write-up on crossovers here:
http://baselaudiolab.com/ADVENT_LA_XO.html

I know the NLA (New Large Advent) will handle a lot of power, and too little power is always worse than too much, but I think the Kenwood has enough. Let's see what other Advent owners say. My own Advents (OLA--Original Large Advent) are awaiting restoration so my answers are more "theoretical" than practical. A Google search found this, supposedly from the OLA manual:
Recommended Amplifier Power:
Advent Loudspeaker 20 watts rms per channel (8 ohms)

A review of the OLA here says "While a good 25-watt-per-channel amplifier should be sufficient, 50 to 75 watts is not excessive." The NLA could handle higher wattage, but I would think 35 would be fine. That same review said "5 watts was enough to rattle windows with this speaker."
http://www.kallhovde.com/advent/speaker-reviews.pdf

Here is a sales brochure for the NLA. It says "The efficiency of the system has been carefully chosen to provide for reproduction of the lowest usable frequencies with amplifiers and receivers of good quality and medium power. While efficiency is lower than that of some comparably-priced speakers of more limited range,and will require a slightly higher setting of a volume control for the same acoustic level, it is no more likely to tax the actual power capabilities of the amplifier or receiver used in a home."
http://www.davidreaton.com/PDFs/New_Advent_Ad.pdf

Kent


In Topic: best power for new advent loudspeaker a-3's

04 March 2011 - 06:30 PM

Thanks Kent. They are these: http://audiokarma.or...ad.php?t=187970 so I think they are the New Advents with the 10" woofer etc. Do you still think my Kenwood will do them reasonable justice?
brad




Hi and welcome to the CSP
Not sure what "Large A 3's" are. Check this thread for identifying your speakers:
http://www.audiokarma.org/forums/showthread.php?t=126376

If you have the /3's they are MUCH smaller than the Large Advents but they're nice speakers. One weakness: Poor efficiency, which means power hungry, so the more wattage the better. BUT... '70s amps had BIG watts. Your 35wpc (or 40wpc according to Orion) was rated according to a system whereby the amp had to produce a steady 35wpc rms at the rated distortion for an hour. '70s Japanese amps are valued in part because they were way underrated and were built like tanks (compare the weight to a new amp. Bet the Kenwood is about 15 pounds!). I suspect that unless you are planning to drive the Advents to ear-splitting levels in an auditorium, your Kenwood should be more than adequate (nice clean-looking amp btw). Given the size of the speakers, they are perfect for an office, bedroom etc. As long as the Kenwood is healthy you should be fine (IMHO, YMMV ;) )
Kent