ATC MIDRANGE DRIVER DOWNLOAD

Not cheap at all. Above cumulative spectral decay. Hard to do a full test from either added mass or added volume. Maybe double laser interferometry could shed light on the issue, but until now it remains unsubstantiated claims. More on this from the cumulative spectral decay plots below.

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Would midraange nice to have two samples, but what I found is well in accordance with other tests of the same dome. As can be seen, double suspensions secure stable positioning of voice coil in magnet gap.

TS data retrieved from the impedance plot.

Hard to do a full test from either added mass or added volume. The lower plot displaying the resonance at Hz, not something that should bother even with a 2nd order point of crossover at 3 kHz.

Wonder how it would sound. This is a 16 Ohm driver Re This is an easy driver when it comes to crossover construction and overall implementation.

The good question is what a 3″ dome has to offer against a lot of midragne good 4″ cone drivers available today?

Soft Dome Mid-Range

Large midrange domes are claimed rocking in the magnetic gap due to the single suspension, but I’ve never seen any proof of this – and it would probably be very difficult to do that test. Apparently no symmetric driver is incorporated here to reduce impedance rise towards higher frequencies. Baffle 60 x cm, driver placed 40 cm from top. Above cumulative spectral decay. Maybe double laser interferometry could shed light on the issue, but until now it remains unsubstantiated claims.

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Having a middome adds considerably to cost and crossover complexity. How the driver behaves on a narrow baffle I can’t tell. Not a trace of unrest from to Hz. Based on simulation it seems a 2nd order high-pass filter produce a 4th roll-off, and at the top a true 2nd order low-pass filter can be achieved.

Above the midrange crossover based on simulation. I think the claim has come due to ATC introducing double suspensions for their 3″ dome and people thinking this is good and all other single-suspension domes must be bad. Green is 2nd and blue is 3rd.

Used atc midrange for Sale |

Probably not as nice as this. I tried the Vifa 3″ dome back then and never liked it much. With an assumed point of crossover around 3 kHz, this is just excellent. Above impedance plot with a 50 Ohm scale. This is one huge transition! Some break-up modes appear around 4. Unfortunately I do not have two of this to test in a classic middrange and evaluate against e. I’m almost glad I don’t, because it takes a damn lot of work to do so, and we may end up thinking we compare apples and pears.

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Above impedance plot displaying a huge peak at Hz. This dome should be well suited down to Hz.

Soft Dome Mid-Range | ATC Loudspeakers

Still very smooth with only a small glitch around Hz. Wouldn’t the ScanSpeak 12MU do just as well? Why they have gone out of fashion is a good question, maybe because 3-ways generally got out of fashion and thanks to D and other excellent dome tweeters, 2-ways took over although never able to mmidrange the same smooth transition between a 6″ or an 8″ midbass driver and the dome.

Today we see a couple of 2″ and 3″ domes from China and rather recently reintroduction of 3″ domes from ScanSpeak.