Hi,
I have today 620 cabs with 416 speaker.
I came over 2 pcs of 414-8c a couple of Days ago. Would it be suicide to build something that contains both the 414 and 416? Like replacing the front of the 620 cabs then mount the 416 at the bottom and 414 at the top with the horn above them all. Then calculate two new holes or one slitz.
In this configuration the 416 will take the lowest freq and the 414 the mids.
The searcher will find. I did not know that Altec produced these type of speakers. All to compete with JBL and Urei.
MODEL 9862 ALTEC HiFi-Do McIntosh/JBL/audio-technica/Jeff Rowland/Accuphase 08-36526-15580-50
MODEL 9862 ALTEC HiFi-Do McIntosh/JBL/audio-technica/Jeff Rowland/Accuphase 12-65490-42766-00
Altec 9862. Wonder what type of cabinet and filters they used. Altec T-950 super tweeter, have not seen that either Before.
I haven't seen those before, so thanks for posting the links. I think it goes without saying that the 414 and 416 occupy separate sub-enclosures within each cabinet. Hope somebody here has some more in depth information about these. I'll bet the crossover network must be a doozy! Surprised that system wasn't tri-amped, at least.
GeeDeeEmm
I have seen the most of Altec. But never these.
After some consider if include the 414 is to build a separate box on top of the 416. Does anyone here have any idea how big in litre it should be for using it as a midbass? Also preferred crossing?
My thoughts is something like this. Like a type of Focal Utopia look a like. Maybe some sort of angled distance between the two boxes to have a more listen friendly spot on.
From a dated E Bay auction:
The 9862 studio monitor speaker system was produced in the early eighties for sale exclusively to the Japanese market. It was a four way system using the 950-8A ring radiator tweeter, a 902 type driver on a special horn for the upper midrange, a 414 twelve inch driver for the lower midrange, and a subwoofer using a specially designed 416. The number of units built was very limited. The 416 woofer used all standard parts except for the cone, which was about 25 grams heavier than the stock cone. This allowed the driver to have the same low frequency performance as a standard 416, but in a much smaller enclosure with a sacrifice of about 3 dB in efficiency. A standard 416-8B/C in a nine cubic foot vented enclosure tuned around 40 Hertz has an F3 of about 40 Hertz with minimal ripple. A 416 built with the "heavy" 35239 cone has the same 40 Hertz F3 in a five cubic foot vented enclosure tuned to 30 Hertz.
For those wanting to retain the excellent mid and upper range behavior of the standard 416, but with 40 Hertz performance in a much smaller enclosure, a 416 built with the 35239 cone is the answer. These cones are original factory parts and are over thirty years old. I was the Senior Design Engineer of Acoustics for Altec Lansing in the 1980's at the Oklahoma City facility and these cones are from my personal collection. This auction is for one pair of cones.
Altec says >2.5 ft^3 [70.8 L] sealed with 3.5ft^3 [99.1 L] optimum: http://www.lansingheritage.org/image...ign/page12.jpgOriginally Posted by ljungberg
The 9862 has 350, 2500 Hz XO points, but is designed for a narrow 'sweet spot', so for good polar response a 12" needs to be limited to ~1500 Hz.
GM
FYI: Nice little conversion freeware program: Convert for Windows – JoshMadison.com
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
I Think i can manage to get to 90-100L if i produce a box for both the 414 and waveguide.
Today I have the model 19 (zilch) filter and if I do this I have to find a proper 3 way solution.
A correct reading of that chart is that the optimum 414 enclosure is 3.5 cu ft ported for full downward extension use. For the application in question a sealed subchamber would be nice, but the size and amount and type of stuffing would be guess and check unless you are set up for box analysis and testing.
Or somehow get measurements from that cabinet. There's a thread on that speaker over at LH somewhere, but I have not found it.
You can find the thread using google. Warning: Sadly, some of the discussion is not serious and some may find it irksome.
Last edited by speakerdave; January 26th, 2017 at 11:22 PM.
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