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Yes I know, and I could probably attenuate each set of preouts just to make sure. Thats an option when setting the h/u's crossovers. Still why would PPI add an attenuation switch later if it wasn't necessary?

In the pdf for the newer 456 its says with regard to attenuation, "push this switch in to accept high level RCA inputs(up to 8v)..."

Kinda scary.

The other problem with using that xover is that it would negate the use of time alignment on some of the outputs. If I planned on using the PPI's sub outs, time alignment would be totally useless as its a non fading out which basically sums the front and left channels. With time alignment I'd be sending two signals to my sub amp that had different delays. Maybe this wouldn't make much difference with a sub app, but I'd think the sum of these two signals would "muddy" the bass output some. Then there's the fact that I'm using a mono amp which sums the LEFT and RIGHT channels. Delay differences there would make things even worse.

If I plan on using time alignment it looks like I will only be able to take advantage of a fraction of that xover's capabilities.

Still, it looks cool so I think I'll leave it in there.

:)

-Fishy

yup in the festiva I'd do the same thing with the heartbeat at the start of DSotM.
you wouldn't hear a thing, but the steering wheel would jump up and down about 2", and you'd feel the tightness in your chest.. then you'd start to hear it. I like that CD a lot.. great remastering on the MFSL release.. very clean tracks.

8 volt preout doesnt mean it sends 8 volts all day :)

Man I need a digital camera.



This is PPI's present one.

http://www.precisionpower.com/signal/pp_sp_frx456.asp

Its a lil different. Mine's bright white instead of what looks to be a dull grey or silver(to match their PC/DCX amps I guess). It also has an attenuation switch I wish mine had. I'm scared what that Clarion's preouts would do to the thing. I hear the 9255 is capable of 8 volts above the 0 dB volume setting.

Now that I think of it most of you "professionals" have seen it all and probably wouldn't be too impressed with the install. As an amateur I'm very proud of it however, and the guy at Sound Advice did do a double-take when I opened up my center console.



-Fishy

Fishy wrote:I don't think it had much to do with the tweaking as I noticed the difference right away. That xover was top of the line in its day and listed for $400, but still, I'm not sure I understand how things improved so much. Maybe my Xtant's onboard buttterworths were garbage(the PPI has 12 db/oct linkwitz-riley's) or maybe it was simply a placebo effect, hehe.

Either way ]
Even though I shouldn't need it now with the Clarion I think I'll keep it right where it is. Its the older white/art series model and looks really cool. One of the few installs I've done that looks trick. Sure was a big PITA to get it to fit in there nice.



-Fishy[/QUOTE]

pics?

I don't think it had much to do with the tweaking as I noticed the difference right away. That xover was top of the line in its day and listed for $400, but still, I'm not sure I understand how things improved so much. Maybe my Xtant's onboard buttterworths were garbage(the PPI has 12 db/oct linkwitz-riley's) or maybe it was simply a placebo effect, hehe.

Even though I shouldn't need it now with the Clarion I think I'll keep it right where it is. Its the older white/art series model and looks really cool. One of the few installs I've done that looks trick. Sure was a big PITA to get it to fit in there nice.



-Fishy

Fishy wrote: The imaging seemed a lot more detailed after I dropped it in anyways.

-Fishy

As it should be through a better tweaked setup... or at least i'd hope so!

Having stuff up front is a big benefit too, makes life easier.

Yeah It was more a hypothetical situation.

Before I got that Clarion I had an old Alpine 7831 with 4v preouts, but just about zero features. My 4 channel amp had built in xovers for both its inputs and line outs so I really didn't need anything extra, but ended up installing a PPI frx456 in my center console just for its subsonic filter. I guess it turns out I really didn't need it, but I'm glad I installed the thing anyways. It let me tweak stuff while in the listening position and seemed to improve stereo separation as well. The imaging seemed a lot more detailed after I dropped it in anyways.

-Fishy

Fishy wrote:Yeah, I probably don't need a subsonic filter regardless, but I have one anyways with my new deck that'll go down to 16 Hz.

http://www.clarion.com/usa/products/sou ... Z9255.html

-Fishy

well there ya go :)

Yeah, I probably don't need a subsonic filter regardless, but I have one anyways with my new deck that'll go down to 16 Hz.

http://www.clarion.com/usa/products/sou ... Z9255.html

-Fishy