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In Reply to: RE: Altec 1505B horns? posted by Joe Roberts on September 21, 2015 at 07:51:29
Small world, Joe. I was just up at Jeff's place three weeks ago (the Westminsters were okay but the LPs, snacks and booze were even better:), and subsequently I've been putting together a two way horn system. Started with a nice pair of 414Zs, found a pair of 32x 24x 14" cabs locally with 12" holes cut high, and will brace them in the coming days. Then bought a pair of 32C horns after reading posts on Joseph Esmilla's site and one or two by you and "Salectric." Found and bought a pair of 802Ds just last night on the big auction site (all drivers are 16 ohm), found a pair of 3000h tweets to play with for shits and giggles, and am building up Joseph's version of the N1600 crossover with paper in oil caps ( I like Ronken:).
Come to think of it, we met briefly in the Sibatone room at RMAF in '11 and I still remember that heavenly sound. An oasis after the so called high end stuff. Jeff, check out the YouTube video of that room and you'll see our friend David Rives sitting and enjoying the sound of that room with a nice big grin on his face...
Harry Z
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This world can be extremely small, which is great sometimes and not so great others! Nowhere to run, nowhere to hide!
I listened to 32s, plastic and metal for two weeks before selling my 414 Onkens. Got to where I was sorta hoping the guy who said he would buy the boxes didn't call me back. Things were getting quite good.
The 414 is a great speaker, I suggest letting it play full range then tap in the 32 with a first order cross over using a 4uf or so cap for 8 ohms (2uF for 16 ohms) ~5k crossover. You will probably need some attenuation before teh cap...L Pad, resistor network, autoformer... but if you hook it up with only a cap, you should hear the potential.
I'd suggest that you put two sets of terminals on the box, one to the 12" and one to the horn. and compare the N1200 with single cap on the 32 using outboard filters, listen to both then decide.
The plastic horn is super rich and captivating. Put on some Dinah Washington and you'll die.
This simple rig was pretty awesome. Great vocals out of the combo.
A speaker setup for less than $1000 that will blow most of what you can buy new out of the water...in my jaded opinion anyway.
That WE757A I took to RMAF is an amazing speaker. It was the model for the 728B/32B/802G system I finished yesterday as an attempt at a "poor man's version." Still tweaking and initial impressions are promising, but in the end I will still be too poor to buy original 757As!
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Free your mind and your ass will follow -- Parliament/Funkadelic
Joe, Can you describe the differences between the plastic and aluminum versions of the 32?
Have to keep it quick because I have house guests waiting for breakfast, but,in short, the plastic 32 is very fat and rich in flavor and the metal one is much drier. Both are fairly laid back, smooth, and not brash and shouty like a 511/811.
With either one it would probably be advantageous to use some EQ in the crossover for a touch more HF at the top sparkle range. I chose to use the metal version in my project initially because it has a bit more subjective definition up high but when I have a chance I will swap in the plastic one again with the 728B. My listening evaluations over the past weeks were with a 414A/Onken.
I will measure both in the coming days. So far, I am flying by ear.
Although the mouth geometry looks about he same, the plastic one is about 1" shorter at the driver end, possibly to help prevent the end of the horn from snapping off if the speaker is manhandled...these horns were used in stage monitors and the like.
I'd say the plastic one is a sensible choice, particularly given the relative high availability and much lower price. It looks like a piece of junk plastic from my Volvo's AC system but sounds very nice.
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Free your mind and your ass will follow -- Parliament/Funkadelic
Watch it, Joe. I like Volvos:)
V70, the preferred ride of the urban gear hustler.
Fits a pr of Petite Onkens but only one Altec 828 cab at a time.
I'm on my 3rd one. Best car evah!
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Free your mind and your ass will follow -- Parliament/Funkadelic
Thanks Joe. Your comments are very helpful. I actually have both the plastic and metal 32 horns and have used them both, but in different cabinets. Since the mounting dimensions are different, I have not been able to swap them back and forth to hear how they compare. In each setup I have used an 802-8G and a crossover that includes eq circuits from the Altec 9849A which used the same driver and a 32 horn.
I compared them sitting on top of an Onken box. You are correct...the front mounting flanges are not the same size. Why did they do that?
I am holding off on routing out a rebate for the front lip of the horn in my new project until I decide which 32 to use or whether I will go with a 32 at all.
The WE 728B plays quite high..."almost" doesn't need a tweeter but ~8k just isn't enough HF for most modern listeners.
If somebody has a better suggestion for a sweet tweeter that will match the flavor of a 728B, I'd like to know.
I hate to put a crossover on the 728B down in the 3k range since it is so good playing full range, but I'll try it before abandoning the notion. It sure works in the 757A, et.al.
Generally, however, the antique collector notion that the metal 32 is great because it is more "WE like" and the plastic is cheap modern trash does not really hold up in practice.
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Free your mind and your ass will follow -- Parliament/Funkadelic
Joe,
What do you think of an open baffle w the 32's and GIP's?
Something like these Shindo's but w the 32.
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