Eminence PSD High Frequency 1″ Driver, 80 Watts at 8 Ohms. Developed for totally loaded Eminence cabinets, or as upgrades to an existing device. Eminence PSD 1 bolt on high frequency driver handles a powerful 80 watts AES at kHz. Eminence:: 1 Inch Bolt On:: Eminence PSD (Bolt-on) 1 inch Throat 80W Compression Driver 8 Ohm:: Eminence PSD (Bolt-on) 1 inch Throat 80W.
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I wanted to address the size of the drivers, in relation to V oice C oil size. So there are other things at play besides the size of the diaphragm. Greg Cameron Senior May 17, While this may sound extreme, these techniques are backed by a lot of double blind listening tests with expert listeners. Thread starter Art Welter Start date May 9, More on this later, I have to go. John Chiara Senior May 18, Jan 11, 0 emunence Troy, NY. The Eminence PSD spd2002 a rough response, and little output above You must log in or register to reply here.
Drivers with more efficient, extended HF output would require less compensating boost. 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.
Jan 11, 10, 7 38 34 Wallingford, CT www. Jeff Babcock Senior May 16, I’d also be very interested to follow a thread on masking in relation to drivers.
Eminence PSDSA | loudspeaker – SONOLOGY Toulouse
To be continued next post. Having one sitting idle after use in a Leslie-style rotating speaker, it has sat idle for the last decade, and provided an interesting glimpse into past designs. Psd200 is hardly evident with the low track and HF horn mixed together, but obvious when the HF horn recording is listened to alone as it is in rminence recordings. It was very interesting to me to see the two BMS drivers plots side by side.
High Frequency Compression Driver Eminence PSD 2002-8 80w RMS 8 Ohm Pair
All of the drivers tested showed many desirable characteristics and some defects. The results of the tests were recorded and normalized meinence level meinence are available for download. Hope you find the recordings interesting, they offer an insight in compression driver comparison as far as I know never undertaken before this study.
We don’t publish a great deal of the data we take for each product, all of this is of course available for the asking. What are benefits of adding HF driver 7khz up? Examples of air non-linearity introduced by the mixing of two ultrasonic tones at dB SPL are available in posts of: The actual SPL and power levels for the recordings are: Psd22002 Threads This forum This thread. Lot of thought here, and more so as the thread expands.
For years I had wanted to hear BMS drivers, which use polyester diaphragms, a material primarily associated with awful clothing from the s. Art Pdd2002 Senior May 9, But I do hear it even with AAC at the lower to mid bit rates. The BMS is by far the highest output for size and weight of the drivers tested.
I don’t want to say they use the same diaphragms, as that has bit me in the butt before, but they have the same VC, and to my knowledge the membrane is the psr2002. This makes comparison of HF compression drivers between different manufacturers difficult in other than very fundamental respects. So the gentle reader has to sift through two layers and use appropriate filters for what I have to say.
Care was taken to insure a smooth transition between driver, adapter and horns, requiring a fair amount of drilling, filing and cursing those that made poorly aligned adapters and drivers that eminencw unique bolt patterns.
Granted distortion plots don’t necessarily relate to subjective listening tests but providing this data does help everyone make more informed choices. Most of my sound work presently is in the dry high desert of New Mexico, HF air losses in hot summer emiennce require far more acoustic power to overcome those losses compared to similar heat at high humidity.
The Jensen Hypex is an antique, no longer available except on the used market. Advances in materials and design has led to higher power handling which may correspond to additional available output and lower distortion.
Art Welter Senior May 16, Members Current visitors New profile posts Search profile posts. The upward masking from lower frequencies crossover masks those distortion effects to a large degree. I don’t know about secrets but I thought DG had a strategy to cancel or somehow mitigate “throat” distortion in horns, this is only one type of loudspeaker distortion, thus the desire for linear drivers so the throat distortion will be predictable.
The Jensen Hypex PA30 driver, lacking a phase plug, but having an acoustic high pass filter, had less upper harmonic distortion. The narrow horn results in an on axis sensitivity around 6 dB more than most typical 90 degree horns, the 2 meter results would be similar to one meter results on some horns. I believe he was able to correct for horn reflections, not distortion products.
Art Welter Senior May 18,