AVI ADM woofer power amp rated @ 250W. BS or not?
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I decided to post a new topic rather than being slumped in the noise created on other threads.
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Every time an “AVI” thread appears there’ll be someone saying something like AVIs are the greatest because they use super-duper drivers, have incorporated preamp and DAC, look cool and have built-in amps; 250W for the woofer and 75W for the tweeter. I believe those are the ratings into 8Ohm loads for reference’s sake. But is it really so? Is there anyone in the know who can actually confirm those numbers are not taken out of thin air as I can’t see any way that a mere pair of transistors could possibly handle 45V constant without going into thermal overload and excessive amounts of distortion. Likewise, could the power supply within the cabinet provide required amount of energy so that transistors could put out those 250W (not mentioning additional 75W). So, BS or not?
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Well Behringer actives have 1000W so I don't think that 250W is unrealistic, people have heard AVI at the NEC and they were very loud.
Is that continuous or peak power? Stated nowhere I could find, and, without knowing, it's hard to say anything about the claim.
There's more to an amplifier's output than just watts.
Who cares? The a lot of amp manufactuers are economical with the truth. 
At the end of the day, it makes no difference really TBH, not worth arguing about.
EDIT: Cant spell or write coherently today 
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For reference though, Quested quote 220W and 150W for the LF and HF drivers of the S8R respectively and Event quote 387W and 112W continuous for their amps in the Opal.
Well Behringer actives have 1000W so I don't think that 250W is unrealistic, people have heard AVI at the NEC and they were very loud.
yeah, very technical answer. thanks a lot.
Who cares? The a lot of amp manufactuers are economical with the truth.
At the end of the day, it makes no difference really TBH, not worth arguing about.
EDIT: Cant spell or write coherently today
+1
For reference though, Quested quote 220W and 150W for the LF and HF drivers of the S8R respectively and Event quote 387W and 112W continuous for their amps in the Opal.
To be fair, the Quested ones do mention the conditions of the sustained power output. And AVI, amongst most people dont mention the conditions of the sustained power output anyway.
Same with amp manufactuers, some quote one channel, some quote it as both channels, some quote at 1% Clip a lot dont say at all and just give a fugure on its own, which is just as usuless.
This is what they say: "Power amplifiers: High speed, linear, analogue bipolar, 75 wpc for the tweeters and 250 wpc for the bass drivers."
Well Behringer actives have 1000W so I don't think that 250W is unrealistic, people have heard AVI at the NEC and they were very loud.
yeah, very technical answer. thanks a lot.
What the MD of the company actually stated (in his own words and easily found in 10 seconds) was...
"The ADM9.1s are capable of a maximum continuous SPL of 108 dB with a 6-10 dB Threshold. They are clean as a whistle at 100 dB measured 10 metres away at the NEC in Birmingham."
Well Behringer actives have 1000W so I don't think that 250W is unrealistic, people have heard AVI at the NEC and they were very loud.
yeah, very technical answer. thanks a lot.
OK, they were measured but I can't remember how many dbs it was, it was mentioned on here a few times a couple of months ago.
If anyone was truly interested, perhaps a polite email to AVI might give you the answers you seek.
I'm not particularly fussed either way, but I found them to be louder than my BM5As by some margin and I did manage to get the BM5As clipping.
That was one of the reason for the upgrade, a bit of extra loudness when needed.
Well Behringer actives have 1000W so I don't think that 250W is unrealistic, people have heard AVI at the NEC and they were very loud.
yeah, very technical answer. thanks a lot.
JCBrum heard them at the NEC...
If anyone was truly interested, perhaps a polite email to AVI might give you the answers you seek.
I'm not particularly fussed either way, but I found them to be louder than my BM5As by some margin and I did manage to get the BM5As clipping.
That was one of the reason for the upgrade, a bit of extra loudness when needed.
Dynaudio is propably one of few fair manufacturers when filling in the spec sheet. 60+60W sounds more like it from amps of this size. AVIs may be morepowerful, all right. but certainly not 200W louder.
as for the manufacturer, why should I write? don't we have a spec sheet on the web site? don't you think the data should be correct from the beginning rather than querying because one have doubts?
you were also mentioning Opals before. 370W, that means at least 3 pairs of transistors if not 4 and a hefty power supply unless you want to read your power output measurements @ 10% THD. y'know, those big fins attached to monster amps are not just marketing lead macho decoration. there's a reason why a 400W amp looks like one.
HAve you seen the Behringers?
I have no idea about the ADM amplifiers but I can comment on the 100wpc amplifiers that are built into my AVI Neutron system.
A few weeks ago I tried my Neutron Five speakers with a few regular stereo HiFi amplifiers and an AV reciever. The HiFi amplifiers which all had a lower power rating did seem to have a bit less headroom and started clipping at slightly lower volume levels than when using the AVI amplifier. But the AV receiver which was rated at 100wpc did seem to have the same amount of headroom as the AVI amplifier and it started clipping at a similar volume level.
The 100wpc power rating claim for the AVI Neutron Five 2.1 system seems to be genuine IME.
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Who cares? The a lot of amp manufactuers are economical with the truth.
At the end of the day, it makes no difference really TBH, not worth arguing about.
EDIT: Cant spell or write coherently today
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