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JBL on the black versusu red for positive and negative input
Does positive voltage to the black or red terminal give outward cone / diaphragm motion?
In most cases, the black terminal is considered to be the positive terminal. Listed below are drivers with black positive terminals (positive voltage to black terminal gives outward cone/diaphragm motion):
1400PRO 2105H 2118H/J 2123H 2202H 2206H 2220H
2225H 2226H 2235H 2240H 2241H 2245H 2404H
2405H 2426H/J 2427H/J 2430H 2435HPL 2445H/J 2446H/J
2447H/J 2450H/J 2451H/J 2485H/J 2490H/J E-Series G125
G135 LE8T-H 2119H 2416H-1 2417H 2418H 2420H
2421B 2430H
As of a few years ago, JBL Professional began manufacturing transducers with the IEC standard of positive to red. Listed below are some drivers with red positive terminals (positive voltage to red terminal gives outward cone/diaphragm motion):
2025H 2035H 2242H M121-8 M151-8 2012H 2020H
2227H 2406H
When in doubt, consult the specification sheet for the model in question.
The Link to the page is here:
http://www.jblpro.com/catalog/support/F ... cific.aspx
G
In most cases, the black terminal is considered to be the positive terminal. Listed below are drivers with black positive terminals (positive voltage to black terminal gives outward cone/diaphragm motion):
1400PRO 2105H 2118H/J 2123H 2202H 2206H 2220H
2225H 2226H 2235H 2240H 2241H 2245H 2404H
2405H 2426H/J 2427H/J 2430H 2435HPL 2445H/J 2446H/J
2447H/J 2450H/J 2451H/J 2485H/J 2490H/J E-Series G125
G135 LE8T-H 2119H 2416H-1 2417H 2418H 2420H
2421B 2430H
As of a few years ago, JBL Professional began manufacturing transducers with the IEC standard of positive to red. Listed below are some drivers with red positive terminals (positive voltage to red terminal gives outward cone/diaphragm motion):
2025H 2035H 2242H M121-8 M151-8 2012H 2020H
2227H 2406H
When in doubt, consult the specification sheet for the model in question.
The Link to the page is here:
http://www.jblpro.com/catalog/support/F ... cific.aspx
G
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