AVI ADM woofer power amp rated @ 250W. BS or not?

[oldric_naubhoff]

sdsdfsd

I decided to post a new topic rather than being slumped in the noise created on other threads.

sdsdfsd

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?

sdsdfsd

 

[hoopsontoast]

Who cares? The a lot of amp manufactuers are economical with the truth. :roll:

At the end of the day, it makes no difference really TBH, not worth arguing about.

EDIT: Cant spell or write coherently today :wall:

 

[BigH]

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.

 

[altruistic.lemon]

Is that continuous or peak power? Stated nowhere I could find, and, without knowing, it's hard to say anything about the claim.

 

[Frank Harvey]

There's more to an amplifier's output than just watts.

 

[Overdose]

Who cares? The a lot of amp manufactuers are economical with the truth. :roll:

At the end of the day, it makes no difference really TBH, not worth arguing about.

EDIT: Cant spell or write coherently today :wall:

+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.

 

[oldric_naubhoff]

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.

 

[hoopsontoast]

Who cares? The a lot of amp manufactuers are economical with the truth. :roll:

At the end of the day, it makes no difference really TBH, not worth arguing about.

EDIT: Cant spell or write coherently today :wall:

+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.

 

[BigH]

This is what they say: "Power amplifiers:[/b] High speed, linear, analogue bipolar, 75 wpc for the tweeters and 250 wpc for the bass drivers."

 

[chebby]

[UNPUBLISHED JD]

accidental duplicate.

 

[chebby]

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.

Indeed. Third hand/third rate hearsay.

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."

 

[BigH]

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.

 

[Overdose]

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.

 

[John Duncan]

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...

 

[oldric_naubhoff]

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.

 

[BigH]

HAve you seen the Behringers?

 

[SunnyCyprus]

How strange considering all the anti (and for that matter pro) AVI shenanigans that out of a clear blue sky this question should crop up and from a source I'd take a wild guess at isn't exactly in the"pro AVI camp". Food for thought and cue for another couple of hundred oh yes you did oh no I didn't kinda posts ho hum wonder what's happening on HDD audio suddenly it seems a haven of peace tranquillity and common sense (well give or take).

For what it's worth ADAM quote 100 watts rms and 50 watts rms for the mid/woofer and tweeter respectively on my A7X's with a continuous spl of 106 db all I know is I enjoy how they sound on the end of my MF DAC which at the end of the day is all that matters.

 

[Overdose]

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.

I'm not sure who you're trying to convince. I'm not interested, and neither I suspect are most of the forum. so if you are that bothered (which I suspect you really are, as you've asked a similar question before), simply ask the manufacturer, or maybe even buy some second hand and have a look at what's inside.

I don't have anything else to offer.

Toodle pip.

 

[relocated]

There's more to an amplifier's output than just watts.

This contribution indicates that there is little likelihood that the amps do not produce the claimed power.

In addition, if the op can't be bothered to find the answer to his own question when directed to an easily retrievable answer is there the slightest point to his verbage?

:hand: :wave:

 

[SunnyCyprus]

Oh I think theres a point just not totally comvinced it's basis is a thirst for knowledge but then I am perhaps more than a little cynical

 

[altruistic.lemon]

relocated or overdose,

Where is the "easily retrievable answer"? No-one on any other forum has managed to find it, even when asking AVI directly. In fact, no-one has found out whether the quoted figure is continuous or peak. Can you provide the info?

 

[Ajani]

Oh I think theres a point just not totally comvinced it's basis is a thirst for knowledge but then I am perhaps more than a little cynical

On topic: IMO the point is that AVI should publish detailed specs. Since they make such an issue of science/technical measurements, then they should be more forthcoming with their own measurements.

Benchmark is all about technical measurements and it shows. My DAC1 booklet requires a PhD in acoustic engineering to decode all the graphs and detailed measurements. AVI should do the same.

Off topic: How do you like your ADAM/MF combo? I'm considering getting a pair of Adam F5s or A5Xs to pair with my DAC1.

 

[John Duncan]

On topic: IMO the point is that AVI should publish detailed specs. Since they make such an issue of science/technical measurements, then they should be more forthcoming with their own measurements.

Benchmark is all about technical measurements and it shows. My DAC1 booklet requires a PhD in acoustic engineering to decode all the graphs and detailed measurements. AVI should do the same.

I understand the official line is that we wouldn't understand them.

 

[char_lotte]

Are the AVI figures RMS?

 

[Dan Turner]

as for the manufacturer, why should I write?

Because evidently you want to know - you even created a thread all about it. The effort you've expended probably already exceeds that of writing an simple email asking your question.

don't you think the data should be correct from the beginning rather than querying because one have doubts?

It's you who's assuming it isn't.

With the greatest respect, you're not acting like someone who genuinely wants to find out the answer.