• TalkBass has been independent since 1998. Add your voice.
    Create a free account to reply to discussions, view embedded media, and browse with fewer display ads.
    Join freeLog in
    Want zero display ads or expanded classifieds tools? Compare plans.

Class D size vs standardization

How difficult is it to fab rack ears and face plates? There being no standard height many (most?) class D heads will require two rack spaces but if you’re willing to shlep a rack what difference does that make?

As far as how an 800w head the size of a Stephen King paperback looks sitting on an 8x10 cab I gotta admit I had issues with that at first. I’m over it.
 
Just a couple of minor notes, almost asides...
And in a hard case, when your head is yanked off its cab it's less likely to be damaged.
I use an old bicycle innertube as a bungee to hold my micro head down on my cab. Indeed, innertubes are a good example of standardization.
I always bring a backup amp head, seems like many do not.
I have an old soft briefcase with a spare head and a variety of cables. But it just stays in the car when I load into the venue.
 
  • Like
Reactions: cheechi
Rack gear is oh-so ‘90s...:cool:
(Maybe even oh-so ‘80s-ish)

You beat me to it, I haven't used rack bass gear since then.

I use floor modelers and a custom built class D 4x6.5"+Horn 500w combo, switchable between FRFR or bass EQ.
I can carry the entire rig with bass bag over shoulder, combo in one hand and the floor-modeler+leads suitcase in the other hand.
(actually not entirely true - I also use an angled amp stand too, which requires another trip to the wagon).

Haven't used my Marshall 450 watt all tube head and 8x10 fridge for a while.
 
This is a much easier load in...
image.jpg


Than this...
image.jpg

The rig, not the basses of course.

I love the Iamp and the rack case but the AI is 900watts and fits in a gig bag. So much more convenient
 
2CB391EB-DED9-48D6-ABBF-8D398F11C67C.jpeg
I took the feet off my Tone hammer 500 and bolted it into a 15 dollar rack shelf... It’s my back up rig since I’m 32 and fit and prefer heavier gear. Most my old heads were 3u or 4u. If I wanted to put another head in there I would just get a bigger rack. Honestly I’m just thankful I’m not carrying an Ampeg 2 Pro around in a rack anymore. The TH500 is only in the rack because I prefer the samsamp rack to my Sansamp pedals and I want to add a Fender TBP-1 to the setup but have been having a hard time finding one at a decent price. Most rack gear has been made into pedals and not to generalize but 70% of musicians aren’t in the greatest shape and want to carry as little as possible.
 
I've got nothing for you other than the fact that I don't own a rack and don't really even know anybody that does. When I replaced my first head with my current one, my thinking wasn't about getting ears to fit a rack, it was the fact that I got literally twice the non-peak power at approximately half the weight. Cutting a few cubic inches in bulk was also a plus.

Depending on the head, I also imagine that it's not all that hard to make some ears to fit a rack with a couple of hours and maybe a square foot of sheet metal.
Yup, rack ears: first rack I've had in 2 decades. Why now you ask?
Simplicity 2 or 3 cables and I'm ready to rock.
Sure the rack doubles the weight, but at setup time I'm setting up the whole PA package mains/monitors lights (all active speakers , again simplicity)
So modularity for me increases convenience. There is still a weight savings overall.
Dig it.
The whole rack cables and power Distribution included comes in at about 15lbs.
IMG_20190426_202157073.jpg
 
Last edited:
I've got nothing for you other than the fact that I don't own a rack and don't really even know anybody that does. When I replaced my first head with my current one, my thinking wasn't about getting ears to fit a rack, it was the fact that I got literally twice the non-peak power at approximately half the weight. Cutting a few cubic inches in bulk was also a plus.

Depending on the head, I also imagine that it's not all that hard to make some ears to fit a rack with a couple of hours and maybe a square foot of sheet metal.
Or get a shelf and Velcro the head to it.
 
  • Like
Reactions: JohnnyChatter
Something we do a lot at work (not audio related business) for 19" rackmount stuff that doesnt have rack ears is to get a rackmount shelf and drill holes that line up with mounting feet holes on the bottom of the unit. Works just fine for a $10K oscilloscope.
 
Hmmmm..... My plan is to get rack mounted gear when I get roadies. (That will right after I get the bus and some groupies.) Can I say stuff like this here?
Until then it is the lightest gear that gets the gig done. Class D sounds good.