Hi guys. Is there any trick to using impulse reverbs? I just haven't found the right settings in Perfect Space & don't get it to sound as good as other reverbs. Thanks.

There is no trick, at least none that I'm aware of. With convolution reverb you're (more or less) mimicking some other device or real physical space, so the sound depends entirely on the IR file.
 
Perfect Space, however, does give you some extended options for altering the sound, such as moving pans and modified envelopes. It's a great reverb - if you've got the right IRs for the job at hand.
 
If you're not happy with the stock IRs that come with PS, look around on the net - there are quite a lot of them available for free or low-cost purchase. Here are some freebies from Voxengo (who wrote PS). There is a long-running thread on KVR dedicated to IR download sites. 
 
I have a few favorite IRs that I use with PerfectSpace, but I don't remember where I got them. I'll look up their file names and maybe Google can locate them...
 
 

Thanks. I have lots of IR's...it's how to adjust the controls on the bottom - wet/dry, length, delay. When I adjust one parameter, the new value seems to carry over to other presets & I am afraid I'll mess them up by twisting dials too much.

Create a new bus, insert Perfect Space on that bus, set Perfect Space to 100% wet and create individual sends from tracks to that bus.

OK thanks I'll try it

Do you just leave the dry setting at 0db?

charles kasler
Do you just leave the dry setting at 0db?

-inf dB

thanks again...this is like opening up a new toy. Of course you can only preview so many presets in a row before ear fatigue...

Most reverbs to my ear are too "wet." You control this w/ a send knob (for reverb usually post setting so the reverb follows the fader) in a buss setting.  The other thing is to roll off the bass before it hits the reverb.  The big energy in bass can crinkle the reverb.
 
Like so much in sound, practice is important.  Once you figure out the basics (as above) it is discovering what you like hear.  Engineering is an art, not just science.
 
@

charles kasler
Thanks. I have lots of IR's...it's how to adjust the controls on the bottom - wet/dry, length, delay. When I adjust one parameter, the new value seems to carry over to other presets & I am afraid I'll mess them up by twisting dials too much.

Nah, don't be afraid to twist the knobs. Those settings are specific to each instance of PS, and you can simply double-click on a knob to restore its default value. 
 
The 3 controls on the left you'll normally leave alone, at least initially. These parameters are already baked into the IR itself, so you'll either leave them as-is or adjust them after you've settled on an IR that's almost perfect but needs a little tweaking.
 
The "Dry" knob will typically be bypassed (the little button to the left of it will be unlit) when PS is used in its most-popular configuration, which is as a 100% wet bus effect. 
 
The "Wet" knob is used to adjust the volume of the reverb, whether the plugin is in-line or bussed.
 
I have never used the "wet pan" knob. This would only be used for special effect, when you want the reverb tail to be on one side. For example, you could use two instances of PS, panned hard left and right, with different settings on each. The result could be a cool - if totally unnatural-sounding - effect.