Tuning the Alpine PXA-H800 DSP

[SgtHawk]

the thing is nobody attacked you initially, you just blew off advice and threw it back in their face warranting the "personal" attacks, if you're too easily offended by some words on a screen i would suggest avoiding at least this forum if not the internet as a whole, its not a very nice place once provoked. But, i would much rather you keep fighting with everyone, gives me something to do while i wait for the rest of my equipment to show up in the mail.

 

[NSTALN 10+ year member]

Yep, that makes sense six ins and eight outs for the DSP. But is that not the setup for full active? I'm wanting to start with passive which is all I'm trying to get to work now with how I have my system set up. And I can easily and quickly test the "Run a SINGLE set of RCA's from the FRONT output of the HU" by just unplugging the rears and subwoofer RCAs from the DSP. Then all I';d have is the two Front RCA signals from the HU to the DSP. Although I can't imagine why they hurt anything.

The "but you need to be able to LISTEN to the advice" part is because I tend not to listen when personally attacked! I go into personal defense mode and I'm quite good at it too!

John Kuthe...

Running multiple RCA's in doesn't 'hurt' but it doesn't serve any practical purpose either. If you're set to 5.1 in for your AUX (which is fine) then the signal will just be summed into 2 channel. If you set your inputs to (3) sets of AUX's then AUX 1 will have your 'front' audio input from the HU, AUX 2 will get it's audio from the 'rear' channel, and AUX 3 would only receive subwoofer frequencies. This isn't what you're wanting.

8 outputs will still allow you to run your speakers with passive crossovers…example; (1) RCA pair into the PXA, (8) RCA's out- RCA's 1&2 front high into front channel of the PDX amp, those two front channels wired to your front passives then off the the individual drivers. RCA 8 is dedicated to your sub channel of the PDX. You now have 5 more RCA's to work with…you can run RCA's 3&4 and 5&6 to your PDR front and rear channel for your 6x9's and either not use the #7 RCA or you can add a center channel or a second sub. Later you can take RCA 3&4 and plumb them to all 4 channels of the PDR and you can use 5&6 for running the front speakers active.

You CAN accomplish what you're trying to do with the equipment you currently have…it's just set up wrong.

 

[Flipper245]

As stated many times before, you only need one full range signal from the head unit to the dsp. The dsp will split the signal up, which ever way you configure it too, and send the proper signals out to the appropriate channels of amplification. Or just bypass the dsp and use your head unit and amplifiers to configure the signal.

 

---------- Post added at 03:45 PM ---------- Previous post was at 03:45 PM ----------

 

And you're an idiot!

 

[The_Quiet_One 10+ year member]

Yeah, it's funny! Somewhere embedded in code is some pattern matching and criteria to replace all characters with '*'. I know, I have written such command line programs in my first co-op job. When a co-op with the company a second time someone on my team said they were having problems with the program I'd written with truing to input the word "Lasso"! I knew immediately what the fix was too, to not reject the string '***' when it's embedded in the string "lasso"!
John Kuthe...

Is your self esteem that damaged you feel the need to "show off" what you "know" in every thread?

As far as the DSP stuff...What does it hurt to at least take some people's advice at face value without linked proof or documentation. Try NSTALN's suggestion. Worst case its a waste of time, but there is a chance it will get you going in the right direction. Sitting there adamantly repeating that we are a bunch of know-nothing egomaniacs is getting you nowhere.

 

[JohnKuthe]

Running multiple RCA's in doesn't 'hurt' but it doesn't serve any practical purpose either.

I will keep them in then, They certainly look cool!

If you're set to 5.1 in for your AUX (which is fine) then the signal will just be summed into 2 channel.

I thought I could not set up the DSP for a 5.1 because I have NO center speaker. I was gonna use 4.1 I think instead.

If you set your inputs to (3) sets of AUX's then AUX 1 will have your 'front' audio input from the HU, AUX 2 will get it's audio from the 'rear' channel, and AUX 3 would only receive subwoofer frequencies. This isn't what you're wanting.

8 outputs will still allow you to run your speakers with passive crossovers…example; (1) RCA pair into the PXA, (8) RCA's out- RCA's 1&2 front high into front channel of the PDX amp, those two front channels wired to your front passives then off the the individual drivers. RCA 8 is dedicated to your sub channel of the PDX. You now have 5 more RCA's to work with…you can run RCA's 3&4 and 5&6 to your PDR front and rear channel for your 6x9's and either not use the #7 RCA or you can add a center channel or a second sub. Later you can take RCA 3&4 and plumb them to all 4 channels of the PDR and you can use 5&6 for running the front speakers active.

THIS sounds like that I want to do, thank you. Looks like some rewiring is in order! And a separate sub amp maybe, as the sub amp I'm trying to use right now is the 500W sub output of the PDX-V9 amp, 5.1.

You CAN accomplish what you're trying to do with the equipment you currently have…it's just set up wrong.

This is good information I can use. Thank you. I will take this under advisement and discuss it with Tim at Custom Sounds and my installer guy who I will employ for some more wiring work (yes I know I can do it myself but I can also afford to not have to!)

John Kuthe...

 

[Slo_Ride 5,000+ posts]

Is your self esteem that damaged you feel the need to "show off" what you "know" in every thread?
As far as the DSP stuff...What does it hurt to at least take some people's advice at face value without linked proof or documentation. Try NSTALN's suggestion. Worst case its a waste of time, but there is a chance it will get you going in the right direction. Sitting there adamantly repeating that we are a bunch of know-nothing egomaniacs is getting you nowhere.

He's getting there. Or at least I hope.

 

[garychoffmann 10+ year member]

You do not need a seperate subwoofer amp. You could actually run everything bypassing the dsp. Set the dsp for full through and adjust the amps accordingly. Then use the dsp to shape the music curve and time alignment

 

[staan]

did you get the dsp turning on without using the controller yet?

 

[JohnKuthe]

You do not need a seperate subwoofer amp. You could actually run everything bypassing the dsp. Set the dsp for full through and adjust the amps accordingly. Then use the dsp to shape the music curve and time alignment

But that's taking the subwoofer out of the DSPs control, right? Because right now the V9 amp has four 100W outs and one 500W sub output where the subwoofer is connected.

John Kuthe...

 

[garychoffmann 10+ year member]

What do you want the dsp to control on the subwoofer?

 

[garychoffmann 10+ year member]

Trying to help you get playing. Right now you have a lot of money tied up in something that sounds like ish. Unfortunately I can't say your installer is being much help.... And how much can you trust he knows what he is doing at this point?

 

[JohnKuthe]

oh no there you go again !! ''Installer guy'' has now become '' Tim'' //content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif

"Tim" is the tech at Custom Sounds who got as much as is working right now working with his laptop and the Windows controller program.

John Kuthe...

 

[garychoffmann 10+ year member]

If you hit enough buttons eventually it will make sound

 

[JohnKuthe]

Trying to help you get playing. Right now you have a lot of money tied up in something that sounds like ish. Unfortunately I can't say your installer is being much help.... And how much can you trust he knows what he is doing at this point?

Because I watched and helped my installer guy at times for this whole install. I've seen what he does and he knows what he's doing and has the 20 ton hydraulic crimping tool to crimp 0AWG cable and stuff. He's mostly experienced at loud bass systems which are easy compared to kind of what I'm seeking, good full range. Not too bass heavy, but there, yano? I think the 12" Alpine sub I have is gonna sound great when properly driven!

John Kuthe...

 

[JohnKuthe]

If you hit enough buttons eventually it will make sound

Yep! Like the infinite number of monkeys and one typing will write all Shakespeare's stuff! I'd prefer a more directions and effective solution.

John Kuthe...