wideband nebular filters

In moderate to severe light pollution conditions,
would a wide-band light pollution filter
significantly improve the view of non-nebular
objects like open clusters, globulars and galaxies?
I've heard that narrowband filters dim these
types of objects too much, and are useful only
on nebulae, is this correct?

I have an orion broadband filter that works real well on nebulae only. I live in plenty of light pollution "Fresno CA" For galaxies and globulars, nothing and perhaps worse. But on nebulae its fantastic. Its wideband as you call it. I use the lumicon OIII for other faint fuzzy objects "FFO's". Helps on some and not others. You get to where you know which works on what.

mine has helped me some on galaxies, but it does dim them too, mostly makes the sky blacker so it "looks" more pleasing. It kinda ruins cluster, all those green stars kinda freak me out haha Ron

The Orion SkyGlow and particularly the Lumicon Deep Sky don't dim the view that much. The views on non nebula objects are somewhat aesthetically more pleasing, but without any real additional detail.

I tend to use my wideband ones more at dark sky sites, preferring the narrower, wideband Celestron LPR or the Ultrablock for nebula in my light polluted backyard.
Renato