Vertical Stacking Equipment

From the manuals.

To maintain proper ventilation, mount the Premier 16LS horizontally on a flat, hard surface, and take care that the ventilation holes in the bottom are unobstructed. Allow at least two inches of clearance above the unit and keep the cabinet or shelf open at the back. Vertical installation is not recommended.  

The Premier Fifteen dissipates sufficient heat that it must be adequately ventilated. Mount the unit horizontally on a flat, hard surface, and take care that the ventilation holes in the bottom are unobstructed. Allow at least two inches of clearance above the unit and keep the cabinet or shelf open at the back. Vertical installation is not recommended. 

Because the DF2 cd player dissipates very little heat, ventilation is not an important consideration, allowing greater flexibility for custom or built-in installations. Of course, reasonable judgement must be exercised to see that the DF2 does not obstruct ventilation required by amplifiers or other equipment in the system. The DF2 is designed to be mounted horizontally.

@rbschauman 

you don’t have your system listed in your profile. Can you create a virtual system and show us this cabinet or add one to a post in the thread?  If you are not able to add supports to the side walls inside the cabinet for shelves, maybe you could add supports/legs to go all the way to the bottom and then continue that pattern upward so each shelf is supported from what’s below.  

Hockey pucks.  

"you don’t have your system listed in your profile."

He does in his post above.

The pieces are:

Conrad Johnson Premier 16LS Preamp (weight 25 lbs.)

Conrad Johnson Premier 15 Phono Preamp (weight 22 lbs.)

Conrad Johnson DV 2b CD Player (weight 20 lbs.)

Magnum Dynalab MD102 Tuner (weight 16 lbs.)

We are often compromised by our physical space, but in my experience, vertical stacking is the definition of compromised, especially with tubes. Do your best and good luck.