VintageKustom.com: Comment Board » Lead III/IV Speakers

Re: Lead III/IV Speakers [message #18148 is a reply to message #18129]

Tue, 05 February 2013 09:54

stevem
Messages: 4733
Registered: June 2004
Location: NY

Senior Member

What amp head are you pumping thru the cabinet?
If its a head with a tube output stage they always sound best when running them at their highest Impeadance as only then are you using the full secondary winding of the Output transformer.
On a multi taped output transformer for example the 16 ohm tap is the full winding, the 8 ohm tap uses 1/3 less of the winding and the 4 ohm tap uses only one half the winding.
Its kind of the same thing as if you put wide tires on your car for better handling, but you pumped them up with so much air that only half the tires tread width was in contact with the road.
Also if those Kustom/Rola speakers are well used then the surround and spider parts of the speaker may be allowing the cone to move too freely and be slow to return to its static postion. This will make for overly powerfull lows and what you precive as shadowed highs.
A way to test this is to plug a cable into the cabinet and hold a new 9 volt batter across the plug, in doing this you should jsut be able to see the speaker cones move.
If the cone travel seen aprocess 1/4" they are well played and need reconing.

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