altec lansing model 14's. almost home.

Discussion in 'Speakers' started by Rex Aeterna, Mar 6, 2016.

  1. Rex Aeterna

    Rex Aeterna Friend

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    these are rough shots. was actually pain in the booty to get these uploaded for some odd reason. photobucket was being super ghey. as can see all walls and back was layered with thick fiberglass and between the horn driver and bass craves area i also put thick piece between them as well. only used some good quality fiberfill in the bass driver section. just enough to fill but, same time made enough room behind the driver itself so it can breath when it needs to excurt and so forth.

    it's best to stuff by taking just the bass driver out but, can take horn out as well if need it but, just taking the bass driver give enough room to work with i personally think...
     
  2. flatmap

    flatmap Acquaintance

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    Oh man you're on it! Thanks so much for the pictures. You really stuff quite a bit of fill in there.

    Believe me, I know all about the uncountably many projects and tasks lurking around the house and workbench. Some of these things... why don't they ever get finished? Well I don't quite have the right resistor vaule, so I'll take care of it next time I make an order. Or, I'm pretty sure that trim pot is too big with the new tubes installed, but I can run the amp until the bias is right. And that turntable is going to be great once I get..... There's no end, and I'm not even factoring in downspouts, bathroom wiring, and so on.
     
  3. Rex Aeterna

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    no prob. always glad to help. yea, it looks like i stuffed whole lot in there but, if saw it in real life you see there is while decent mount, not too much of the fiberfill was used. fiberglass took most space up. used 9'' thick fiberglass for walls,floor and ceiling and between horn and bass driver area.... and just restapled the mesh. don't know if it was factory done or not but, the mesh was covered over a thing of old fiberglass when i bought the 14's... so just took it out, cut a bit and stapled over the hole inside to cover the hole..

    some people say stuffing kills bass if add too much...to me from my experience, no it doesn't it actually will improve overall bass performance. keeps all internal cab reflections and standing waves under control and you get to hear the actual speaker components themselves play in harmony instead.. i think the m14's have excellent bass on their own but, of course use a pair of dual 15'' jbl and 18'' subs with 3.2kw of crown power as the main driver for the subs for 30hz and under. i find the 14's good to about 35hz before major fall off kicks in and i consider that really good cause most speakers with 15'' or others don't reach that low in some speakers. i think the 12'' altec bass driver has a fs of 25hz which is lowest i ever seen spec'ed so far from any 12'' bass driver i ever came around. only driver ever saw lower resonance frequency is the large 18'' jbl 2245h bass driver which fs is 20hz.
     

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