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Buckeye Amps: 2nd Generation Purifi EIGENTAKT 1ET9040BA Amplifier
- Thread starter Buckeye Amps
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Next time you suspect send us a report. We could have caught this sooner. And reduced the BS factor. Unless you secretly enjoy the chaos.
OP
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- #583
I just didn't want to come across as crying wolf or be seen as trying to silence criticism of my products had I turned out to be wrong.Next time you suspect send us a report. We could have caught this sooner. And reduced the BS factor. Unless you secretly enjoy the chaos.
What a mess, thanks mods, and glad I have been spending less time here lately so missed the drama.
One never wants to be the one crying wolf, but I tend to report a lot more than I used to simply because I got tired of the same old actors and same old endless debates. I like to give the benefit of the doubt, but all too often it ends with days or weeks of trolling off-topic madness (anger and/or insanity, choose your definition, either works) and just makes more work for the mods in clean-up. (I help moderate another forum and see this constantly.) If something feels a little off, then nobody need know if you report it, and the mods can decide to split out the post(s) into a more appropriate thread (or delete them) and determine if the user is in fact a reincarnated (or not) troll. Wait, or worse respond (post) in the thread, and you just create a bigger mess to clean up.
@Buckeye Amps Now, since I'm too lazy to read back, I am curious where the AP analyzer and updated measurements stand?
One never wants to be the one crying wolf, but I tend to report a lot more than I used to simply because I got tired of the same old actors and same old endless debates. I like to give the benefit of the doubt, but all too often it ends with days or weeks of trolling off-topic madness (anger and/or insanity, choose your definition, either works) and just makes more work for the mods in clean-up. (I help moderate another forum and see this constantly.) If something feels a little off, then nobody need know if you report it, and the mods can decide to split out the post(s) into a more appropriate thread (or delete them) and determine if the user is in fact a reincarnated (or not) troll. Wait, or worse respond (post) in the thread, and you just create a bigger mess to clean up.
@Buckeye Amps Now, since I'm too lazy to read back, I am curious where the AP analyzer and updated measurements stand?
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OP
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- #585
Returned the AP last year for refund.
New measurements have been confirmed and mono's will be back to Stereophile for retesting soon.
Old_School_Brad
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Why not share the measurements?
Thanks Dylan, I remembered that, but missed what you are using to replace it? Cosmos or something like it? Or third-party test lab?
OP
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- #588
The E1DA Cosmos, yes.
Starts climbing in distortion about about 420, to 425 watts (into 8 ohms), and hits 1% really close to 450
If we're talking about the same review, I thought it was very positive.
Old_School_Brad
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So, any new measurements to share @Buckeye Amps ?
OP
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I'm just going to let the follow-up Stereophile review/measurements do the talking when they come out
HaveMeterWillTravel
Senior Member
I assume that is at 1 kHz?
Purifi modules have more or less constant power and distortion at all audio frequencies. As long as the preceding buffer output voltage is nowhere near saturation, the amp should produce those stated powers at any audio frequency... my 2 cents!
Holmz
Major Contributor
Yeah buy… With a generally rising distortion versus frequency the SINAD numbers may be dependant upon the chosen frequency
Luvchampagne
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Quick question. If the rising frequency distortion issue is there for Purifi 9040, then why pay for the Purifi 9040 over Icepower or Nlai if use case is only below 1khz?
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Holmz
Major Contributor
I dunno…
I assume most people are using it for a full range speaker, and a subwoofer use would not need that super high SINAD.
One only need a couple of handfuls of watts for tweeters and midranges, so unless they are using some active XO, then then lion’s share of the kilowatt amp would be headed downstairs to the woofer.
The chart above from the 9040BA datasheet shows a ultra low distortion that is more or less stable with frequency for a given output power. Taking the 10W spec (grey line) for example, the distortion + noise is flat with frequency at -120dB (SINAD = 120dB). But adding a preceding buffer will change this dynamic and become the gating factor of the amps distortion performance. since not all buffers are made equal.
Holmz
Major Contributor
^Yep^ - and other amp topologies can be “less flat”, and raising up like when the Wagner is playing at a rally… and not bending back down after 5kHz.
OP
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Due to cross posting by a few over the last few months since the Stereophile review, I found myself reading comments by a competitor inside their own echo chamber and felt the need to outwordly laugh in the form of a post.
One thing that has given me immense satisfaction since starting Buckeye is the doubt and criticism expressed about Buckeye by those who claim to not feel threatened or impacted by our growing market share. Results speak for themselves and each year our customer base grows while our committment to the community has not waivered.
I started Buckeye to bring the incredible performance and transparent sound of Hypex and Purifi to the masses and that has not changed. Nor will it ever change. As always, I owe it all to the vast majority of the audio community.
Thank you all!
One thing that has given me immense satisfaction since starting Buckeye is the doubt and criticism expressed about Buckeye by those who claim to not feel threatened or impacted by our growing market share. Results speak for themselves and each year our customer base grows while our committment to the community has not waivered.
I started Buckeye to bring the incredible performance and transparent sound of Hypex and Purifi to the masses and that has not changed. Nor will it ever change. As always, I owe it all to the vast majority of the audio community.
Thank you all!
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