It's a nice match, despite a slight age difference, both are 420A models, one is from 1967 and the other from around 1973. Both units cones are absolutely original, and for 40-year-old originals (see photo of speaker cone #s) -- they are beauties — only a few blemishes normal for their age (study large photos below) -- they're likely the nicest looking you’ll see online. They both play and sound great (see video below), Buyers NOTE: Unit #2 (1967) has slight intermittent on and off-axis rubbing -- a common problem for some 420A units. Unit #2 was tested extensively and swept 20-20K -- and no buzzs, rattles or distoration could be heard. This flaw could be temporary and may go away when mounted in a cabinet in a oposing direction for some time (gravity will self center the coil sometimes.) This slight rubing (only on unit #2) *may or may not* cause problems in future -- this is a really nice pair, ready to enjoy, though they are best suited for an experienced buyer, willing to utilize them a not quite perfect pair. On both, the dampener is clean and overall still tacky on both. And the original cork gaskets are excellent. Unit #1 measures 5 ohm DCR, Unit #2 4.5 -- a very close match.
The edge dampener is clean still tacky not runny, cones are very clean. As always they will be thoroughly and carefully double for safe domestic or international shipping. Carefully packed, bolted together, and double boxed for guaranteed safe arrival NO DOA. Packed weight 40lbs, 18x18x18" dimensions. Please see our 100% rating for all vintage audio items.
Inshrined in pantheon of Altec drivers is the quality Altec 420A 15” dual cone speaker. A crossover-less full range speaker with a dual compliance, mid cone. The 420A 15" version deserves an honored place at that. When you think about it, to get a really nice sounding alnico 15 inch driver the covers this frequency range (and having killer detailed mids) (you really don’t need a tweeter) — options are few and far between! You will have to spend a lot more money than these 40 year old, hefty beauties! I think to do better than these you would really have to get a fragile RCA LC1 or 1A speaker (or the wimpier S1’s maybe) And….arguably your bass response (if you want it) won't be the same, with the LC1’s. Other than this Altec series, I really can't think of any other worthwhile options. When people listen to these drivers in years to come; prices will be sure to rise as , with many other untouchable classic audio items.