Members moody Posted January 9, 2004 Members Share Posted January 9, 2004 I posted recently about needing to repair / replace the diaghraghm (sp?) in a compression driver I own. I have not done anything about this yet. I have however managed to pick up a pair of old altec lansing drivers that are 8ohms (same as the pair I have) and fit my horn - the problem being that they are something like twice the physical size of the drivers I have. (ps - the price was right - nothing) The picture will illustrate my problems. 1: How the hell do I get it inside and bolted onto the horn? is it possible?2: Will I need some sort of additional internal bracing to keep it from cracking the wood around the screws?3: Is their any reason other than these why this horn won't work as a replacement? Link to comment Share on other sites More sharing options...
Members moody Posted January 9, 2004 Author Members Share Posted January 9, 2004 OH, of course, the picture: Link to comment Share on other sites More sharing options...
Members Audioeast Posted January 9, 2004 Members Share Posted January 9, 2004 i second marks comments......i think manufacts who dont support the compression driver on a plastic horn are lazy! Link to comment Share on other sites More sharing options...
Members moody Posted January 9, 2004 Author Members Share Posted January 9, 2004 Originally posted by Audiopile If you have good, stout cast metal hornflairs, Yep Originally posted by Audiopile chances are you don't need no stinking CD back support as long as you use grade 8 machine screws and tee-nut the hornflair in. I suggest you use Allen head machine screws to mount the compression driver to the hornflair since that's "easier" to deal with than Phillips head screws or hex bolts if you're mounting the compression driver on the hornflair "inside the box". I have nuts and fixed bolts for the driver to flair connection - if I can't manage with that then I'll try something else... What does tee-nut mean, and grade 8 machine screws? I'm definately not up with the lingo. Link to comment Share on other sites More sharing options...
Members agedhorse Posted January 9, 2004 Members Share Posted January 9, 2004 What model Altec driver is that? I can't tell from the photo. How many mounting bolts on the driver (2, 3 or 4). It's not a 291 is it??? You will need to verify that it has the same exit throat diameter as your horn. Also, is there enough cabinet depth since the driver looks a lot deper? If it's what I think it is, you will definately need to support it. Also, be careful, since the replacement diaphram for the new driver may be really expensive. Link to comment Share on other sites More sharing options...
Members moody Posted January 10, 2004 Author Members Share Posted January 10, 2004 Originally posted by agedhorse What model Altec driver is that? I can't tell from the photo. How many mounting bolts on the driver (2, 3 or 4). It's not a 291 is it??? You will need to verify that it has the same exit throat diameter as your horn. Also, is there enough cabinet depth since the driver looks a lot deper?If it's what I think it is, you will definately need to support it.Also, be careful, since the replacement diaphram for the new driver may be really expensive. It isn't too deep, 3 mounting bolts (same as what I had) same throat diameter 291-16K, 8ohm. Is that good? Link to comment Share on other sites More sharing options...
Members agedhorse Posted January 11, 2004 Members Share Posted January 11, 2004 I'll have to look at my old Altec data, but I think that's a 2" exit and I know the diaphram is expensive. Generally 2" exits are 4 bolt, but it's been a while since I've worked on a 291... it's a heavy sucker for sure. Link to comment Share on other sites More sharing options...
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