Advice on acoustat spectra 11 speakers platform
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Acoustat Spectra Reviews (includes measurements)
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For a better experience, please enable JavaScript in your browser before proceeding. You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser. Acoustat Spectra Reviews includes measurements. Thread starter bolserst Start date pm. Paid Member. Acoustat Spectra 11 loudspeaker Measurements Stereophile.
After a careful read through the text of the measurement section I determined the reason for the difference in the on-axis response. The Spectra measurement had the mic placed vertically at the center of the ESL panel. This puts the mic well below the vertical center of the ESL panel and would account for the rolled off highs. The disparity in horizontal response curves was puzzling as they should be near identical since both measurement sets were taken with mic placed at the center of the panel.
JA obviously had measured the horizontal response in only one direction not both and just mirrored the data. My guess is that the Spectra 11 review shows measurements taken to the listener side, and the Spectra review shows measurements taken to the sidewall side. Last edited: am. More options. Thanks for your time an the info ESL are just so good even setup bad But i still have to put the ML Ascent stepup tran in place of the Acoustat high frc tran Long live Acoustats Last edited: pm.
In my Acoustat setup Meat Popsicle Member. I don't have the tech expertise or instruments for measurement, but my ears tell me the only way my M3s sound right is when they're precisely distanced and angled in all dimensions.
The hardest was finding the exact tilt to avoid a null zone at the height of my ears when I sit to listen, and matching that tilt on both speakers. That having been said, it's not hard for me to imagine mic placement would have a tremendous effect on measured response.
AcoustatAnswerMan Member. Having them backwards sounds just plain weird and may lead to thoughts of suicide. There IS a potential difference in top-end response between the 11 and The Spectra 11 has a fixed 1-ohm resistor in series with the audio transformer, which was done to limit the minimum impedance at high frequencies.
The thinking was that the budget-priced 11 would typically be used with budget-priced amplifiers, which might be unstable under those conditions. The has a hi-frequency balance switch, which offers 1, 0.
In other words, the LO position of the 's switch is equivalent to the standard 11 response. Since most people use the HIGH zero ohms position, the typically has a more extended top end. This is reflected in the graphs presented. HINT to owners of the Spectra you can lower the value of that resistor even down to zero, as long as your amplifier is up to the task.
This will add a bit of top-end sparkle. The Spectra 11 polar response graph has me a bit puzzled, as it doesn't seem to contain the usual normalized straight line for the zero-degree response. But certainly, due to Spectra's asymmetric response, the left and right polar response should look different. Large planar speakers can be difficult to measure, and unless two different speakers are measured using identical techniques in identical environments, comparing the results are pretty much useless.
AcoustatAnswerMan said:. Click to expand When it was raining, you could push the bias setting higher because the humidity was causing increased leakage current on the panel, reducing the amount of charge on the diaphragm. When the humidity went away, the charge on the diaphragm increased to the point that the diaphragm collapsed to one of the stators.
This is why you were getting less output. Dropping the bias voltage reduced the charge on the diaphragm enough to allow it to pull free from the stator and move in the middle of the gap restoring output and giving better sound quality.
The pair of Spectra11s Any idea if there was ever a change from the 1 ohm you mentioned to a 0. After trying values ranging from 1 ohm to 0 ohm, the owner decided he liked 0. Studley Member. Question for those with experience of accoustats, how do the s compare to other models? Is there a consensus about which accoustat model was the best? Studley said:. Show hidden low quality content.
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Spectra Jims 85 Speaker Systems Owners Manual
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Index to Audio Equipment Reviews: 1984
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Acoustat Spectra 11
LN i NOU At Pioneer, we think the most believable way to describe how good HPM speakers are is to tell you what went into them. In many speakers, you'll find that the upper end of the audio spectrum is reproduced by an ordinary tweeter. In HPM speakers, you'll find that the high frequencies are reproduced by a unique supertweeter. It works by using a single piece of High Polymer Mo'ecular film, hence the name HPM that converts electrical impulses into sound waves without a magnet, voice coil, cone, or dome.
A discussion about high end hook up wire
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Forum Rules. Thanks for replying Mike. I had previously owned a Naim Supernait 3 and it was warm and very punchy but lacked refinement. I guess the higher series will have more refinement. Naim's problem is Would you hazard a guess as to how they would work under a Pass Labs X
Speakers are, of course, the most difficult of all components to evaluate, even in the best of circumstances. In my case, I also have the added burden that two of my main contributors are or were speaker manufacturers, some of whose products you will see as References below. Other associates are distributors of speaker lines. Accordingly, I made the only decision I could:. All the choices in this category are mine alone. What I say to those who question my objectivity is; please closely read the rest of the References first to see my consistency and sensitivities, before making judgments on the few choices you may be understandingly skeptical about.
Discussion in ' Audio Hardware ' started by coffeecupman , Apr 12, Log in or Sign up. Steve Hoffman Music Forums. A discussion about high end hook up wire Discussion in ' Audio Hardware ' started by coffeecupman , Apr 12,
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