AVS Forum Special Member
Join Date: Oct 2004
Location: Orland Park, Il
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The speakers I'm measuring are Mirage HDT-R, here is their descrition: The HDT-R surround speaker is said to be an Omnipolar design, meaning it is designed to radiate sound in all directions. At the demonstration I attended in Vancouver, Paisley described the speaker’s dispersion pattern as actually being more like half of a grapefruit (presumably when the speaker is mounted on a wall). The HDT-R is trapezoidal in shape with two 5.5" bass drivers on the front baffle that are slightly smaller than those utilized in the HDT-F and which fire directly into the room. Each side baffle, which is directed at an angle into the room, has the same PTH midrange driver and tweeter as the HDT-F, for a total of six drivers. Frequency response is rated from 80 to 20,000Hz with a sensitivity of 90dB and 6-ohm impedance. The HDT-R is also bi-wirable and bi-ampable like the HDT-F with the same high-quality binding posts. It, too, is an acoustic-suspension design and is available in black or white finishes.
This is the story behind me taking measurements, I was using a Marantz SR-18 receiver as a 5-channel amp to power my surrounds and back speakers, 1 of my surrounds were bi-amp. The surrounds are Mirage 6-ohm speakers and the backs are Jamo 4 ohm speakers, to make a long story one of the amp channel in the Marantz blew which cause all the channels to stop outputting ( safety feature ) so it went in the shop and I was told 1 of the channels blew and I was told I either have a short or an open somewhere or that the low impedance speakers caught up the the 15 year old Marantz. So I decided to take my meter out and start measuring all my speakers, first from the end of the cables leading into my rack area and then from the speaker posts, all my speakers measure perfect except the Mirages, I get a reading of 1-2 M ohms which to me seems very high. I opened 1 of the Mirage speakers up and measured from the inside of the speaker posts and I still get the high measurement but if I measure across each individual tweeter and woofer I get the correct 4-5 ohm reading. I called Mirage and I was told not to measure from the speaker post, if that is true then why I'm I getting the correct reading from my other speakers?
Equipment List: Benq W6000, Darbee DVP-5000S Video Processor, JKP Affinity 100 inch 16x9 .9 gain reference screen, Marantz SR7009 Receiver, 3-Marantz Ma700 and 2-Ma6100 mono blocks, 9.2 set-up, B&W Nautilus 805 front speakers, B&W Nautilus HTM2 center speaker, Infinity ( soon to be replaced by B&W ) bookshelf Atmos Speakers, Mirage HDT-R side speakers, Jamo THX surround one rear speakers, PSA S3600I & S3000I subs, Richard Grey, Monster Power, and Panamax powerline conditioning/surge protection.