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HiVi M8N 8" Aluminum/Magnesium Woofer
Parts Express Staff, I Need Your Help!!!!!
Can anyone fron the Parts Express staff get out an inductance meter from stock and record the reading here?
This woofer has an inductance of 1.383 mH as measured with the WT3.
Date published: 2013-08-04
Does anyone know the voice coil inductance of this woofer? HiVi doesn't include this on their spec sheets.
Based on woofer's with similar specs that list the Le of the Voice Coil, I'd venture to say it's probably somewhere between 0.8 - 1.1 mH. Are you going to build a Zobel network for it? If so, use the median Le between the two values I listed and you should be good.Hope this helps.
Date published: 2013-08-04
Screw hole size
I have recently purchased the b4n and another hivi tweeter and the 8-32 screw size works perfectly for them, I was wondering if this is the same for the m8n, or will I need larger mounting screws.
The mounting hole size in the woofer's frame is listed as 4.8mm, which is approximately 3/16 of an inch. If you use washers (and you should), you should be fine.Hope this helps.
Date published: 2012-08-06
if i was to build a sealed enclosure using 2 of the m8n woofers what would the right volume be and should i make separate chambers or just one? all the software i've tried keeps giving me different answers. the midrange and tweeted would go into a separate cabinet
Tweeter doesn't need a cabinet. Mid needs it's own separate enclosure. The woofers can share a cabinet space - calculate for one woofer and multiply the volume by 2.
Date published: 2012-06-21
good match with planar dipoles?
Would this be a good woofer to combine with a planar dipole? I am thinking for that purpose a sealed box would probably be better than a ported one because the planars are hard to keep up with -- does that sound right? My worry is that in the product description it says that these are specially designed to benefit from a ported enclosure, though.
These magnesium woofers can certainly "play nice" with various tweeters, planar, dipole and otherwise. For a sealed alignment, consider the HiVi M8a, linked below for your convenience.
Date published: 2012-04-26
I haven't seen any of these used in a car. Would would they do?
the cost of four of these and then a 2 ohm stable amp would give some impressive results but sun may age the edges fast. these are not car drivers as such. GET THE TC SOUND 8 OR 10 ON SALE CYBER MONDAY you will not be disappointed when you hook a big amp to a TC
Date published: 2011-11-27
Can this be an outdoor driver?
Is this driver suitable for outdoor applications? For that matter, how do I determine if a driver is suitable for using outdoors?Thanks,Michael
yes, this would prove to most likely do well in mild elements. it seems as if the cones are anodized. remember that the idea of outdoor speakers is that they tend to be under an overhang, and are therefore small, while this woofer tends to ask for breathing room. if you do use this for an outdoor system, be sure to make them in a mid-size enclosure. also, be sure to weather strip the mouth of the speaker mounting hole. if you can make a proper enclosure and put it in a nice spot, i think they would sound stunning. please leave a review after you do. i would like to see what you came around to. hope this helped!
Date published: 2011-10-18
HiOn the spec sheet HiVi notes 22L vented enclosure for this driver. What would be the closed equivalent? I have calculated 39 L with 0.7 QTC, it is just strange that the sealed is higher
According to the software we use here (Bass Box Pro, referenced below for your convenience), a sealed enclosure for this driver would be 19.07 liters for a Qtc of 0.707 and an F3 frequency of approximately 57 Hz. If I run the same driver for a vented enclosure, I get something like 63 liters. I'm not sure if the specification sheet is out of date or in error on our website, as there is no date or specific model number listed on the sheet we have posted.
Date published: 2011-07-17