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Allison One


AmericanMean
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Hello all.

I just scored a pair of one's at an estate sale. Grills are in perfect shape, everything seems nice and neat. I wasn't able to test them before, but I thought for the money, it'd be hard to go wrong. The serial number is A12725. Is there a way of dating these speakers? The owner said he's had them for '35 years or so".

Thanks in advance,

 

David

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Sure!

Within just a few years.

The A1's came in two flavors.

The introduction model has outboard connections to the tweeters and mid range units (thin leads connected by spring loaded brass pins.) (1975/77)

The "newer" versions have those drivers connected internally. They stayed pretty much that way until the end of the One, around 1985.

 

Bill

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19 hours ago, AmericanMean said:

I'm going to have my favorite a/v geek friend come over and take a look at them...he said something about a possible crossover capacitor upgrade...I want to treat these with loving care!

I understand that. 

The A1 was the focal point of my system for 35 years.

In top operational condition, they are one of the finest speakers you could find anywhere, at any price, especially if you're a fan of the wide dispersion characteristics they were known for.

Evaluating the condition of all the individual drivers would be my first task. Capacitors SHOULD be at the very bottom of the list with those systems. The caps used in the Allisons were high quality and it's unlikely even now, that they've drifted significantly enough to have an audiable impact on the sound.

Could you post pictures with the covers off? That would answer a world of questions.

If the woofers have not been re-surrounded they will need that for sure. At 40 years of age, they may need more than just that. The woofers are the obvious, then comes the rest of the drivers.

The A1's are wired like having 6 pair of speakers all rolled up into one system. Each pair of identical drivers are wired together in series, (if one tweeter is not functioning the other will also fail to run.) The same is true for the midrange units and woofers.

Hopefully, we can see some pics and go from there.

Bill

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I agree with the above.  Your friend needs to use caution.  You approach Allison ones differently than many other speaker brands.  Jumping into a recap is not always the best course of action.  Plus these are not the easiest to get to the caps.

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Wow...thanks for all the info everyone...Here's a few pics..all the the speakers are in similar shape..this one has the obvious dent...I definately will tread lightly. Now I need to find someone in the Minneapolis area that can do what needs to be done with them.

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Thanks for the pictures!

It LOOKS.......like these are the original Ones that have been retrofitted with the newer tweeters and midrange drivers.

Looking closely at those shots, you can see that the original holes have been filled and painted where the brass pins once were.

That's not a bad thing at all, so long as the crossovers have not been altered.

I always thought the newer bi amp crossover was unnecessary for that system and often wished my pair would have come from the factory just the way yours are now, ironically.

A photo shot of the backs would tell us for sure.

 

Bill

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8 minutes ago, AmericanMean said:

There definitely is some fill on the fronts, on one side..the paint is peeling in  those areas  I thought that was a bit curious, now it makes sense. .Here's  a shot of the back

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You have a pair of modified hybrids, for sure.

Those are the newer, biamp. Crossovers, and updated drivers installed in an older cabinet.

If everything is airtight and correctly wired, they should work fine. Still the woofers need to be restored and hopefully, all the tweeters and midrange units function.

Finding replacement mids and tweets these days is by far, the biggest hurdle. If they all work, I would leave the dents alone for now and just take care of the woofers.

Bill

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28 minutes ago, AmericanMean said:

Thank you sir, it's always good to have information..not necessarily the info i was hoping for...but much appreciated!

 

Oh, I understand....good luck whatever you decide to do.

Good news is that pair are BOTH a worthwhile project, OR the drivers themselves can get your money back (and then some) on Ebay, should you decide not to go forward.

Best Regards,

Bill

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2 hours ago, AmericanMean said:

any idea what they may be worth as they sit? I'm still on the fence with them

Nothing is better than an honest seller on eBay, I mean if you simply wanted to wash your hands of them and walk.

I would put them on there for pickup only....what you paid as a starting bid. When the bidding starts it will probably go beyond the 200. Ebay buyers who know more about them than you do, simply by looking will set the price.

Of course if you want to go thru the electrical/mechanical evaluation of the systems, you could do much better financially.

Some Allison drivers were selling a few weeks back for 200 bucks a pop. (One driver).

Slim pickins out there.....at the end of the day, you'll need to decide what you would like to do!

 

Bill

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I think $200 for that pair is a great deal. I personally would not part them out, but that's just me. You WOULD make more $ parting them out though. Tweeters: probably $150 each. Mids about the same, woofers, I don't know, but should be above $100 each. Look at Ebay's sold history, if you know how.

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  • 1 month later...

I bought a pair of Allison Fours in 1974 after testing AR and Dynaco and a few others I a very serious shop in New England. they are fantastic voice speakers and yes I still have them and only had to "new surround" them. So when I found my "dream" pair of Allison One's from an original buyer about 8 years ago I drove 6 hours to grab them for $400. I have the original brochures somewhere. So these pictures are of totally stock speakers with new woofer surrounds. I have used them DAILY ever since.

By the way if I needed your speaker covers I would give you $200 for them, but that said you should do the surrounds and enjoy - David

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13 hours ago, DesignInc said:

I bought a pair of Allison Fours in 1974 after testing AR and Dynaco and a few others I a very serious shop in New England. they are fantastic voice speakers and yes I still have them and only had to "new surround" them. So when I found my "dream" pair of Allison One's from an original buyer about 8 years ago I drove 6 hours to grab them for $400. I have the original brochures somewhere. So these pictures are of totally stock speakers with new woofer surrounds. I have used them DAILY ever since.

By the way if I needed your speaker covers I would give you $200 for them, but that said you should do the surrounds and enjoy - David

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You did beautifully with those Ones! Are the other drivers dent free as the panel pictured?

To come up with a pair like that these days is treasure indeed.

On used Allisons, mashed in drivers are commonplace compared to what you have.

Was a shame the company went on the skids AFTER the driver protection issue was solved.

Bill 

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