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Dynaudio Owner's Thread - Page 656

post #19651 of 21659
Quote:
Originally Posted by rob80b View Post

Hi Garman

Hum and buzz from the speaker is a real pain, I assume your going single ended.
When I first installed my Bryston 4BSST it sent an unacceptable hum through the speakers audible from my listening position, where the previous 3BST with the identical set-up was dead quite. Had Bryston take a look at it and they were able to reduce the hum a fair amount but not eradicate it, I just assumed it was from my electrical.
Ironically though, this spring when I installed the Emotiva USP-1 pre in place of my Bryston BP25P all hum disappeared, go figure.
Either way, hum or buzz heard from 10-15 feet away should be looked into and see if you can narrow it down, if it’s the XPA-2 I’ would call EMO, you know transferable warranty and all that.wink.gif , although you mentioned other amps also caused the hum.
BTW my Emotiva UPA-1 and XPA-200 are dead quite as was the UPA-2.

I put a cheater plug on it and it doesn't seem as bad now, but I am tempted to give the Matching A5 Amp a whirl as I know that is dead quite as most MF gear is very well grounded and I have had zero issues with there equipment, if I don't keep the Emotiva it's pretty easy to sell it for the same price as they seem to be in higher demand! About ready to hook up a Rogue Sphinx Int. tube Amp up as it just came back
with free updates from Rogue. I highly recommend this Int. Amp with Dynaudio of the bookshelf size!

http://www.stereophile.com/content/rogue-audio-sphinx
post #19652 of 21659
Why I love my Special 25s

I just happened to listen to both these diametrically opposed discs back to back after dinner and in both cases the 25s did a stellar job (as expected they refuse to be pigeon holed ), showing no weakness for one or the other, sort of like going to a restaurant that served up the best french “haute cuisine” or the perfect amercican style cheese burger & fries from the same kitchen. wink.gif

“Constellation” 1988 by Yoshio Hachimura,
(Vol. I: Improvisation for Piano / Improvisation for Violin & Piano / One Hour at Every One Breath (Concerto for 8 Soloists) / Elixir, for Flute, Violin & Piano / Constellation, for Violin, Vibraphone, Tub Bells & Piano)

This music is not for everyone, Yoshio Hachimura being one of those 20th Century Contemporary Composers but the recording shows off all those audiophile traits, 3D imaging, lots of depth, and tiny delicate details.


“Risotto” 1997 by Fluke

I only discovered Fluke over the last year or two, best way to describe their music that I can think of would be British Electronica, or I like to call it “Euro Rave” although I’ve never been to one with strong driving base and percussion rhythms.
But you may remember their music from The Matrix Reloaded, Sin City or the Need for Speed, no wonder I love listening to their stuff driving around in my Mini. cool.gif
Edited by rob80b - 6/29/13 at 5:04pm
post #19653 of 21659
Rob80b:

Nice recordings I been listening to a lot of SACDs lately because I prefer their sound. I been switching some equipment around as the Emotiva does sound nice but it seems to be causing some ground loop issues for me, not too bad but enough to be annoying. So I am trying some different cables/power chords and switching pre/amps out, seems my Rogue Metis pre/amp doesn't cause as much hum with the Emotiva, but I bought the XPA-2 to pair up with the Musical Fidelity A5 Pre/Amp now when they are paired up I get the slight hum and buzz, so trying to switch things around. If I have to use the Emotiva with the Metis, I am going to sell the XPA-2 and just buy the A5 Amp I been keeping my eye on before it's gone. wink.gif This Amp sure is sweet though for the price, pretty impressive they can make this good sounding of a Amp at this price point! They can talk all they want about DBT testing Amps, but when it comes down too it, its what mates up with the rest of your equipment that counts and of course what sounds best to "YOUR EARS".
post #19654 of 21659
Quote:
Originally Posted by Garman View Post

I am going to sell the XPA-2 and just buy the A5 Amp I been keeping my eye on before it's gone. wink.gif .

I'm not familiar with the Musical Fidelity A5, looks like an interesting amp but are those two additional EI-transformers or 2 fans?

I’ll look it up.
post #19655 of 21659
Quote:
Originally Posted by rob80b View Post

Why I love my Special 25s

Rob, on a side note, nice to see you posting again
post #19656 of 21659
Quote:
Originally Posted by Dynero View Post

Rob, on a side note, nice to see you posting again

It's always a good idea once in awhile to let folks know your still alive.tongue.gif
post #19657 of 21659
Quote:
Originally Posted by Garman View Post

Rob80b:

.......as the Emotiva does sound nice but it seems to be causing some ground loop issues for me, not too bad but enough to be annoying. So I am trying some different cables/power chords and switching pre/amps out, ...........

Hi Garman

What length of interconnect are you running between the pre and amp?

Before plopping more money on another amp, and seeing that your XPA-2 has balanced inputs, an inexpensive solution might be to try a male RCA to male XLR cable, this would not be a fully balanced connection but in some set-ups, but not all, could greatly reduce or even eliminate your noise problem, might be worth a try.
CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 90

Robert
Edited by rob80b - 6/20/13 at 8:52am
post #19658 of 21659
Rob,

Thanks for the info, I have a pair of those but it didn't improve, some Amps/Int Amps in my system just seem more prone to it than others. I am going to stick with my original plan and buy the A5 Amp and be done with this and just sit back and enjoy the music and buy some SACDs. I have 3 systems in my HT room, and I am downsizing. LOL
The A5 Amp doesn't have fans, that is some thing MF calls choke regulation that they use and their Amps are usually dead quite.

Main System is:
Dynaudio C2s
Musical Fidelity A5 Pre/Amp
Musical Fidelity A5 Amp (Soon Hopefully)
Sony SACD Player.

Then:
Martin Logan ESLs and PSB Imagines
Rogue Audio Metis Pre/Amp
Chiro C-200 upgrade Amp, last one I bought on Ebay guy sent me one that almost blew my C2s up. This one however is upgraded and very dynamic
Sony DVP-S7000 Still kicking after many long years!

HT Gear
Marantz Receiver 7005
Oppo 93

Going out the door:
Emotiva XPA-2 Sold it in Audiogon record time listed for about an hour!
Rogue Audio Sphinx Int. Amp, really highly recommend this for anyone using Dynaudio Monitors. I was going to use it in my office but I also have a Marantz PM7200 which is decent.

Also curious on here if anyone has tried Dynaudio Wireless Speaker system?
post #19659 of 21659
Quote:
Originally Posted by Garman View Post

Rob,
I am going to stick with my original plan and buy the A5 Amp and be done with this and just sit back and enjoy the music and buy some SACDs.
The A5 Amp doesn't have fans, that is some thing MF calls choke regulation that they use and their Amps are usually dead quite.

Sounds good ( pun intended,) any unwanted noise at the speaker end really plays havoc with the overall sonic illusion and makes it really hard to hear into the recording.
Quote:
Originally Posted by Garman View Post

Rob,
Going out the door:
Emotiva XPA-2 Sold it in Audiogon record time listed for about an hour!

Funny, same thing happened to me, 15 minutes actually after I put an Emotiva UPA-2 on CanuckAudioMart.
post #19660 of 21659
Quote:
Originally Posted by Garman View Post

Rob,
The A5 Amp doesn't have fans, that is some thing MF calls choke regulation that they use and their Amps are usually dead quite.

Looks like the preamp has them too.


Reminds of when I was trying to figure out Variovents on the Contour Centre.rolleyes.gif
post #19661 of 21659
Quote:
Originally Posted by rob80b View Post

Hi Garman

What length of interconnect are you running between the pre and amp?

Before plopping more money on another amp, and seeing that your XPA-2 has balanced inputs, an inexpensive solution might be to try a male RCA to male XLR cable, this would not be a fully balanced connection but in some set-ups, but not all, could greatly reduce or even eliminate your noise problem, might be worth a try.
CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 90

Robert

If anyone needs a pair; I have a spare set...from my BAT audition.
post #19662 of 21659
Rob80b: Choke Regulation

"A power supply choke is basically a coil of wire, often wound around an iron core much like a transformer. But instead of having a primary and secondary like a transformer, a choke has just one side.

A choke is an inductor offering 'inductive reactance' (XL), or opposition to change in current. In other words, in a power supply, it helps to filter out the AC component.

A classic pi network filter is comprised of a capacitor to ground, then the inductor in series, then another capacitor to ground.

The rectified DC enters from the left of the network. The output to the right is filtered and smoothed so there is much reduced AC 'ripple' on the DC.



Well, it's not that simple. Many tube amps use filter chokes and many of the manufacturers don't make a big (marketing) deal of it.

It's less common to use a choke in the power supply of solid-state gear as there are other more cost effective methods to achieve the same results. However, it does allow the manufacture to put some marketing spin on his gear to set it apart from the crowd, whether there's a true benefit or not."

This was from a conversation I had on Audio Asylum years ago, to me it makes the Amp/Pre Amp pretty dead quite when on with no music playing and funny thing is I have never had ground loop problems using Musical Fidelity gear.
post #19663 of 21659
Garman: Let me get this straight. You bought, received, tested, and then re-sold the Emotiva XP-2 in a span of like 48 hours?
post #19664 of 21659
Quote:
Originally Posted by Garman View Post

Rob80b: Choke Regulation

"A power supply choke is basically a coil of wire, o............

Thanks Garman

Once you mentioned choke my memory cells from 10 years ago re-engaged, just never did see a photo of it’s implementation.



Quote:
Originally Posted by rob80b View Post

Reminds of when I was trying to figure out Variovents on the Contour Centre.rolleyes.gif

As for the Variomonts


“Physically, the VARIOVENT is a flow resistance, damping the resonance like a DC-resistance in the oscillating circuit, which results in a more precise bass response (excellent transient response) and better woofer quality.
The impedance maximum at the resonance point will be reduced by at least 50% compared to a sealed cabinet (fig. 2), Consequently, the amplifier is able to give more power in the lower range. The oscillation of the cone after a strong pulse is a periodically damped (fig. 3 and 4). A cabinet construction with VARIOVENT must not be mistaken for a bass-reflex box. This often is inclined to a voluminous and inaccurate bass response. To the contrary, the VARIOVENT causes a more clear and well-defined bass response……”

http://www.gattiweb.com/images/dynaudio/variovent_data.pdf
post #19665 of 21659
"A power supply choke is basically a coil of wire, often wound around an iron core much like a transformer. But instead of having a primary and secondary like a transformer, a choke has just one side"

Wouldn't that make it an autotransformer lending it to self-induction? What would be the benefit over step up/step down transformers?
post #19666 of 21659
ambesolman: Maybe less noise who knows but it works for me as these Amps are dead quite and they mate very well with my C2's. I use to have the Int. version of the separates I have now and was sonically impressed back then, I will be hanging on to this system for awhile till my Dynaudios putter out. Not a electrical engineer so that question remains a mystery to me, maybe I will send MF a e-mail and see what their
answer is.
post #19667 of 21659
Quote:
Originally Posted by ambesolman View Post

"A power supply choke is basically a coil of wire, often wound around an iron core much like a transformer. But instead of having a primary and secondary like a transformer, a choke has just one side"

Wouldn't that make it an autotransformer lending it to self-induction? What would be the benefit over step up/step down transformers?

Well if Garman is indeed suffering from nasty line induced noise, a power conditioner would suffice, but reading MF’s description of their regulated choke implementation.

“Inside the custom-made chassis sits the same dual-mono design boasted by our very best power amplifiers. But what sets the M6 PRX apart is its unique Choke Regulated Power Supply (CRPS).
A choke, which offers high resistance to AC and very low resistance to DC, offers a hugely effective solution to power-supply noise. Chokes were commonly used on traditional tube amplifiers, but we were the first to use them with transistor designs. We also exclusively use a dual bifilar choke system for the ultimate in noise rejection.
The CRPS also provides outstanding mains noise filtration and rejection, ensuring low-noise power supply performance and immunity from main-borne interference. You won't even have to think about adding a mains conditioner to the M6 PRX.
The sonic effects of our CRPS are amazingly quiet background, precise imaging and fine detail recovery. “


Then the A5 looks like it may be an excellent solution in his scenario, to get the best noise free signal to his C2s.
post #19668 of 21659
Anyone in the joint...have 260s?
post #19669 of 21659
Quote:
Originally Posted by Garman View Post

Rob,

Also curious on here if anyone has tried Dynaudio Wireless Speaker system?
Yes, I've got the Xeo5s. Love them - they are based on the Excite line, but with amps tailored for each speaker, they are better. Wide soundstage and balanced sound overall leads to a pleasant listening experience. And the extended bass for the 5s is awesome. Who needs a subwoofer? The wireless interface has worked perfectly for me, although the remote can be a tad flakey at times. I'm hearing nuances for the first time in old recording I know by heart. Highly recommended.
post #19670 of 21659
Quote:
Originally Posted by CDLehner View Post

Anyone in the joint...have 260s?
I'm still working on getting them, how come? I did live with them for a week
post #19671 of 21659
Quote:
Originally Posted by CDLehner View Post

Anyone in the joint...have 260s?

CD
???

The write up in 6Moons almost makes one want to go out and buy a pair.
http://www.6moons.com/audioreviews/dynaudio4/1.html
”Would I overreach by saying that I preferred the new 260 to the Confidence C1? That the Special 25 recently authored as Signature Edition did not give me as much enjoyment as the 260? Will it be irresponsible to pronounce with complete calmness and a straight face that to me only the mighty Temptation seems to be clearly and indisputably superior in every respect to these small speakers? Personally the answer to these question is unambiguous. It is a "No!" uttered with complete conviction........
..The Focus 260 is an incredibly communicative loudspeaker. What’s more, it seems to have a better tonal balance than most Dynaudios I’ve heard over my entire career regardless of price......".


Edited by rob80b - 6/21/13 at 9:47am
post #19672 of 21659
Quote:
Originally Posted by callas01 View Post

I'm still working on getting them, how come? I did live with them for a week
Quote:
Originally Posted by rob80b View Post

CD
???

The write up in 6Moons almost makes one want to go out and buy a pair.
http://www.6moons.com/audioreviews/dynaudio4/1.html

+1 Rob wink.gif

Callas; what were your impressions?
post #19673 of 21659
Quote:
Originally Posted by Garman View Post

I put a cheater plug on it and it doesn't seem as bad now, but I am tempted to give the Matching A5 Amp a whirl as I know that is dead quite as most MF gear is very well grounded and I have had zero issues with there equipment, if I don't keep the Emotiva it's pretty easy to sell it for the same price as they seem to be in higher demand! About ready to hook up a Rogue Sphinx Int. tube Amp up as it just came back
with free updates from Rogue. I highly recommend this Int. Amp with Dynaudio of the bookshelf size!

http://www.stereophile.com/content/rogue-audio-sphinx

what updates were done to Rogue Sphinx? I have one.
post #19674 of 21659
Wow, wow, wow...3 bud lights, and Ryan Adams "come pick me up" cranked waaaay up just reminded me why I love my dynaudios. Just spectacular sound!!!

Sure, you can get speakers with a bit more excitement but then when you put on a truly well produced and recorded album, like this surely is, the dynaudio balanced and accurate approach to speaker design really shines. Awesome....
post #19675 of 21659
Quote:
Originally Posted by CDLehner View Post

Anyone in the joint...have 260s?

I've heard them. i prefer them to the Contour 3.4 on first initial listen, they sound like baby Sapphires but not as bright, very good, very musical and engaging.
post #19676 of 21659
Quote:
Originally Posted by jaxwired View Post

Wow, wow, wow...3 bud lights, and Ryan Adams "come pick me up" cranked waaaay up just reminded me why I love my dynaudios. Just spectacular sound!!!

Sure, you can get speakers with a bit more excitement but then when you put on a truly well produced and recorded album, like this surely is, the dynaudio balanced and accurate approach to speaker design really shines. Awesome....

Steal my records...
Quote:
Originally Posted by Dynero View Post

I've heard them. i prefer them to the Contour 3.4 on first initial listen, they sound like baby Sapphires but not as bright, very good, very musical and engaging.

Man; I have a hard decision to make. confused.gif
post #19677 of 21659
Quote:
Originally Posted by CDLehner View Post

Man; I have a hard decision to make. confused.gif
Well, this ground has been covered before.
Quote:
Originally Posted by Dynero View Post

This to me is the biggest head scratcher from Dynaudio, Focus or Contour? They're priced so closely together yet officially the Contour is higher tiered than the Focus. Methinks the 1.4 has more bass power and will play louder than the Focus 160 but the 160 has a little more refinement across the audio band and is more forgiving than the Contour 1.4. maybe the midrange of the 160 is recessed a db or two?

The 3.4 and Focus 260, again the 3.4 feels like you can crank it up more but the 260 has an airier and fresher sound than the darker yet brasher sounding 3.4. I also feel the 3.4 goes deeper but the 260 is punchier in the mid-bass. The 260 also sounds more open in the mid-band. The 260 I feel is more in the Sapphire/s25 camp. BTW the 3.4 sounded marvellous with tubes, much much better connected to the Mcintosh 275 than the Krell 2250 i had it originally connected to.

5.4 and 380 I haven't really heard much of the 380. I have heard the 360 and I wrote a mini review along these forums before when I compared it to the c4, my general impressions of the 360 were very favourable. The 5.4 I heard in passing and my immediate impression against an AB with the 3.4 was that the 5.4 had much more refinement in the treble and went very deep in the bass.

If I were to downsize I'd get a used c1, 260 or 3.4.
post #19678 of 21659


Man those look sweet in black. I love how thin and sleek the 260s are...

I wish they'd make a Confidence C1.5 that looked like those...but then these are pretty close...
post #19679 of 21659
^^^ You know...I would really love to be able to spend some time with the S1.4 again (you know...without actually having to buy them...lol). I think it's a pretty misunderstood speaker. I know there's always some inconsistencies, when it comes to individual's take on SQ...but I've heard this speaker (and line) called both dark, and lively; forgiving, and revealing...smooth, and bright. Huh?? confused.gif

I think my own recollections...good, deep bass for size (as opposed to the punchier bass, of the Focus 140 I had come from), smooth, forgiving; but slightly "dark", because it was ever so out-of-balance, to the bass-heavy side...might have been skewed, considering it was followed by the Special 25. Many speakers...that would not otherwise...would seem a bit "dark", after that sizzle-machine. wink.gif

Having made the journey to C1...and then really changing my perspective, of what a natural, balanced speaker could sound like (Harbeth can do that; I'm not alone. I was searching the Net, for someone comparing Compact 7s, to the more-expensive Monitor line 30(.1)...and came across this. It mirrored, my experience...almost exactly:

I quickly hooked them up to my system and listened for a couple minutes. I have to admit, at that point I just didn’t get it. Having just spent a year with the vivacious and exciting Aerial 7Bs, the Harbeths were underwhelming: the highs and lows both seemed rolled off. Then I sat down for a serious listen. I soon realized that the 7ESs were not really “rolled off.” Every necessary element of the music was there; I just wasn’t being hit over the head with it. This allowed a more nuanced range of timbres and tones to show through in the music. It did not take me long to fall head over heels in love. Instrument sounds were real in a way that I had not heard before in my living room. Even more, the sound had a wholeness that made one think “musical performance” rather than just of tones recreated by drivers.)...

I'd love to go back, and judge the S1.4 on its own merits, and with this new-found perspective. Then again...260s sound awesome too (and Harbeth 7s, are the speakers that turned my perspective around to begin with...lol).
post #19680 of 21659
Quote:
Originally Posted by jaxwired View Post

[IMG ALT=""]Man those look sweet in black. I love how thin and sleek the 260s are... I wish they'd make a Confidence C1.5 that looked like those...but then these are pretty close...

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