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Old 18th April 2012, 10:38 AM   #1481
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What can all you pro builders tell a newb. Cabinets are finished kind of. I need to know what the "proper" way to complete them. Is a Speakon better than a 1/4" and which is most widely used? When using either how do you tell polarity? Anybody have a preferred terminal box?
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Old 18th April 2012, 11:30 AM   #1482
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Default "Pro builder" response..

Speakons are the way to go
A) jacks can short an amp if pulled out / pushed in when powered on
b) jacks can easily be pulled out, speakons lock into position
c) speakons are air tight, so no whistling / loss of pressure through the back of your cabinet
d) speakons have tiny little "+" and "-" signs to show which is which
e) aside from some older style bass and electric guitar cabinets, jacks are only found on the cheapest pro audio cabinets - just take a look at the rear views of cabinets in various price ranges.

Regards, Ben

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Originally Posted by paperman View Post
What can all you pro builders tell a newb. Cabinets are finished kind of. I need to know what the "proper" way to complete them. Is a Speakon better than a 1/4" and which is most widely used? When using either how do you tell polarity? Anybody have a preferred terminal box?
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Old 18th April 2012, 11:36 AM   #1483
Mark Kravchenko --- www.kravchenko-audio.com
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Polarity is simple.

Get a battery and positive to the positive terminal will push the cone out. You have to jumper the battery positive to positive and negative to negative. Reverse should do the same.

Don't do it for an extended period of time but short bursts will cause no harm at all.
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Old 18th April 2012, 11:38 AM   #1484
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Battery as in "AA" or 9V or car battery?
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Old 18th April 2012, 11:41 AM   #1485
Mark Kravchenko --- www.kravchenko-audio.com
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LOL

No forklift battery!

How about a 1.5 volt of your choice, AA or AAA

you can use a nine volt but your applying a few watts DC over the coil. not what you really want to do. 1.5 volts is safe enough to use on almost everything.

Not compression drivers.


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Old 18th April 2012, 01:57 PM   #1486
epa is offline epa  Netherlands
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isn't polarity reversed in a th :?
you'd probaply need to mach it up with the rest of the system.

i would advise to use the speakons with a recesplate.
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Old 18th April 2012, 06:41 PM   #1487
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Is polarity dependant on which side of the cone is loaded?
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Old 19th April 2012, 01:45 PM   #1488
epa is offline epa  Netherlands
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actaly,the cone is loaded on both sides.
but i would say + on the black/mines terminal.
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Old 19th April 2012, 02:35 PM   #1489
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Quote:
Originally Posted by epa View Post
actaly,the cone is loaded on both sides.
but i would say + on the black/mines terminal.
I made that mistake (seemed logical at the time), now I have to reverse the banana plug on my amps :^(.

The primary "heavy lifting" in a tapped horn is done by the long horn path, connecting the speaker so that positive voltage results in the cone pushing in to the horn (+ to the red terminal on most speakers) then compensating for the path length error (delaying the top cabinet) will result in a smooth phase transition.

The horn path length on the SS15 is about right so that if the speaker is hooked up + to + it will be about one wavelength behind a front loaded cabinet with a crossover around 80-100 Hz, so will also result in an "in phase" (but lagging) transition with no compensating delay.
That said, what we hear first sounds louder, without delay the bass will not seem as loud as the top cabinet, and won't have the definition or "punch" that proper time alignment provides.

Art
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Old 19th April 2012, 06:12 PM   #1490
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So Art what way would you say is the best polarity? Also what is the prefered way to attach the leads to the sub? Rings, solder or some other I am not thinking of?
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