This means that when you put a full range signal through the box you get more top end than bottom end because for the same number of watts the eminnece is simply louder. Or maybe its the fact that its a cheepo x-over in the box? Forum Permissions You cannot post new topics in this forum You cannot reply to topics in eminehce forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum. Although never the best compression drivers, I always thought they were excellent value for money.
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Gazuru Care was taken to insure a smooth transition between driver, adapter and eminenve, requiring a fair amount of drilling, filing and cursing those that made poorly aligned adapters and drivers that have unique bolt patterns. Also, in the same vein, there is less distance for the VC to support, or control at any one time.
Advances in materials and design has led to higher power handling which may correspond to additional available output and lower distortion. The low frequency ripple is less than the unit to unit driver frequency response variance. One of my biggest complaints about a lot of audio codecs is how much distortion in the higher frequencies I actually do hear.
Thiele -Small parameters for cone transducers make comparison of cone speakers relatively easy, allow allowing reasonably reliable predictions of response in a particular cabinet alignment. Thanks again for the time, energy and expertise. If I am, please remove this post. More recently coders have pushed compression ratios even high by incorporating spectral replication.
The inexpensive PSD was a surprise, with 6 dB more power, it hit So to me, this is the main difference between the drivers, and why the does not go as low as the While this may sound extreme, these techniques are backed by a lot of double blind listening tests with expert listeners. The process was akin to aligning a dozen different PA systems, no small feat in itself. Art Welter Senior May 16, Granted it has much improved over the original mp3 format.
Having owned many of these drivers, have found unit to unit consistency to be quite poor, the driver tested was the best of four units I still own. Search Everywhere Threads This forum This thread. Jan 11, 3 18 Ontario, Canada jeffbabcock. Members Current visitors New profile posts Search profile posts. The upward masking from lower frequencies crossover masks those distortion effects to a large degree. It was very interesting to me to see the two BMS drivers plots side by side. Thread starter Art Welter Start date May 9, Considering the disparity between size, weight, diaphragm material, and design, the constraints and compromises inherent in each approach, once equalized for flat on-axis response there spd surprisingly little difference in the end results of listening tests.
This HF compression driver evaluation was undertaken for three basic reasons: Regarding the VC size, and its relation to the surface area of the diaphragm. This compression results in high throat SPL, at the upper power levels the drivers were tested at the non- linearity of air is pad for a significant though undetermined percentage of the of distortion measured, that non- linear distortion is unavoidable in any compression driver design.
And disclaimer, I sell them. Lot of thought here, and more so as the thread expands. Eminence PSDDIA Diaphragm Most of my sound work presently is in the dry high desert of New Mexico, HF air losses in hot summer temperatures require far more acoustic power to overcome e,inence losses compared to similar heat at high humidity.
Rather than select drivers by how good they sound, he selects drivers by how linear they are, since everything else can be fixed in DSP. I hope this came out right. The distortion levels above do not include the minimal contributions of upper harmonics past the second, and are rounded to the nearest whole number above the actual 2ndHD.
The larger diaphragm emiennce have less odd order harmonic distortion at high volume. This makes comparison of HF compression drivers between different manufacturers difficult in other than very fundamental respects.
Genuine Eminence Factory Horn Driver Diaphragm, 8 Ohms, PSD2002-8DIA