TOPIC:

TimoJ wrote:

I did notice that the system now has a little more hissing noise, even when the CDSP's output volume is turned down. Only pressing mute cuts it. Not sure how Dirac could effect to this since it's before the output level adjustments. Need to do more testing and tweak amp input gains a little lower.

Rechecked this and it's my headunit that hisses and lowering CDSP's volume (or input gain) removes it. I already knew this but for some reason earlier it sounded like CDSP's volume had no effect to it. Maybe the noise source was my laptop's fan..
The CDSP has very low noise and it's easy to completely eliminate with amplifier gains.

I need to modify my headunit and add line outs. Signal is now coming via speaker outputs... My signal source is now much inferior to what it was with the PXA-H800 (iPod directly connected). Still, even now the system sounds much better.

I hearing things...
I've been playing my test tracks that I have played many times with my home stereo (also with Dirac) and now my car system seems to reveal sounds and instruments that I haven't noticed before Must be because of the close listening position.

TimoJ wrote:

I hearing things...
I've been playing my test tracks that I have played many times with my home stereo (also with Dirac) and now my car system seems to reveal sounds and instruments that I haven't noticed before Must be because of the close listening position.

Good to hear timoj

You using hilevel in , man I would at least run a rca to aux cable and use your headphone output from your phone.

Hi level source is pretty bad. I’m excited to hear what you think with a better source

denver8me4dinner wrote:

You using hilevel in , man I would at least run a rca to aux cable and use your headphone output from your phone.

Maybe for testing, but I need to find a better head unit solution for regular use. I want to use steering wheel controls etc. I have looked Android head units that look oem, but I have read that the signal output of those is not very good. And no digital out available, unless you use an external USB DAC but then you lose volume control via the head unit or the steering wheel controls.

Current signal source is still an iPod Classic 5.5, but now it goes to the headunit via the CD-changer port (and emulates the charger). I already modified line outputs to the headunit (I have few of those..) and tested. Signal level is a little too low and maybe needs a buffer. Noise level is lower (with CDSP's input levels raised to compensate the lower signal), but there is still some noise. Hilevel is not the major issue with this setup, bigger problem is that the headunit uses a DSP chip and all signals go thru it. So I get multiple A/D-D/A stages before the signal reaches CDSP's DSP chips.

I was listening again and just realized that the sound doesn't appear to come from the speakers... You just hear the music and it's not localized to the speakers, speakers "disappear". And still you get an excellent vocal center and stereo imaging with good instrument separation.

And this was just my second full Dirac calibration, I have made sure I have lots of backups of this setting...

TimoJ wrote:

denver8me4dinner wrote:

You using hilevel in , man I would at least run a rca to aux cable and use your headphone output from your phone.

Maybe for testing, but I need to find a better head unit solution for regular use. I want to use steering wheel controls etc. I have looked Android head units that look oem, but I have read that the signal output of those is not very good. And no digital out available, unless you use an external USB DAC but then you lose volume control via the head unit or the steering wheel controls.

Current signal source is still an iPod Classic 5.5, but now it goes to the headunit via the CD-changer port (and emulates the charger). I already modified line outputs to the headunit (I have few of those..) and tested. Signal level is a little too low and maybe needs a buffer. Noise level is lower (with CDSP's input levels raised to compensate the lower signal), but there is still some noise. Hilevel is not the major issue with this setup, bigger problem is that the headunit uses a DSP chip and all signals go thru it. So I get multiple A/D-D/A stages before the signal reaches CDSP's DSP chips.

Sorry if I forgot my apologies

What kind of car is this , yr make mod

Thanks I think I can give some recommendations to look at , just some ideas

Andrew

denver8me4dinner wrote:

What kind of car is this , yr make mod

BMW E39 sedan with factory 16:9 navigation. Looks like it's got to be one of those Xtrons, Avin or AndroidAutoshop units. Or a DIY solution using Arduino to convert car's bus signals to CDSP's control signal, I have seen similar projects done. But I'd like to install an Android based head unit because of all the modern software possibilities it offers.

I loaded the DL upgrade last night & set up some preliminary routing, xovers. I plan on completing an initial tune tonight after work - Should of called out sick for this important life event

My system goes like this: Alpine HU >6ch Pre-Amp (F/R/Sub) > C-DSP 8x12DL > 8ch Amplification > Front Tweets/Mids/Midbass & Trunk Baffle Subwoofer (Amp Channels 7+8 Bridged)

I have a few question for those who have set this up already:

1. Bass Management: I feel this feature is more geared toward home audio (Satillites, Subs) or perhaps integrating into a speaker level factory system with no sub instead of an aftermarket head-unit where there usually is a separate pre-amp signal just for subs.
Are you using it and why?
If it is used, do the xovers set up on the Bass Management tab make null the need to set up LP xover for the sub & HP xover for the Midbass on the output tabs?
Is there any advantage to setting it up using the Bass Management Tab compared to just routing the Sub channels from my Headunit directly through like my previously setup? I would combine both Subwoofer Pre-Amp signals in the "Routing" tab and send it to only 1 Dirac channel then set up the xovers on the output tabs like my previous tune.

2. Is level matching between L & R handled automatically by Dirac? I previously level matched L & R using the routing tab or the headunit balance control (which worked very well by the way).

@rccotroneo
I was also wondering about the bass management in my earlier message #42489, got no replys. I'm currently using it only to split L/R signals to the sub channel, not using it's filters. And the same could be done via routing. I would like to have an option to have a PEQ instead of the bass management tab.

Dirac does all channel level matching.

TimoJ wrote:

denver8me4dinner wrote:

What kind of car is this , yr make mod

BMW E39 sedan with factory 16:9 navigation. Looks like it's got to be one of those Xtrons, Avin or AndroidAutoshop units. Or a DIY solution using Arduino to convert car's bus signals to CDSP's control signal, I have seen similar projects done. But I'd like to install an Android based head unit because of all the modern software possibilities it offers.

Mobridge works nice in those cars

But yeah I hear ya , I’m not sure on the android os sq , but if others have good luck...


How does Dirac do with the underset subs ?

Do you have them crossed with a HPF ?

denver8me4dinner wrote:

Mobridge works nice in those cars
But yeah I hear ya , I’m not sure on the android os sq , but if others have good luck...
How does Dirac do with the underset subs ?
Do you have them crossed with a HPF ?

You are mixing models and thinking about the E60. No MOST bus on the E39 and no subs under the seats.

TimoJ wrote:

denver8me4dinner wrote:

Mobridge works nice in those cars
But yeah I hear ya , I’m not sure on the android os sq , but if others have good luck...
How does Dirac do with the underset subs ?
Do you have them crossed with a HPF ?

You are mixing models and thinking about the E60. No MOST bus on the E39 and no subs under the seats.

Gotcha ,

So yours has the 5.25” in the kicks and has two sets of rears if I’m not mistaken?
And maybe a 2” and tweeter in door?

I’m curious about your install , what all gear you have. I’m doing a 5series install with a cdsp in a few weeks. I thought was similar. Maybe not

denver8me4dinner wrote:

So yours has the 5.25” in the kicks and has two sets of rears if I’m not mistaken?
And maybe a 2” and tweeter in door? I’m curious about your install , what all gear you have. I’m doing a 5series install with a cdsp in a few weeks. I thought was similar. Maybe not

5.25" are in the doors. I'll send you a private message about my system, this thread goes off topic..

Having an issue with DLCT and the mic. The mic is plugged in, the blue led is on, and it's showing up in and is selected under "recording device" - See first attachment

But when I click proceed I get a pop up window that states: "Could not open recording device. Make sure it is not in use by another application." - See second attachment

When I click "ok" that same message box pops up again - then I click "ok" again and it takes me to the next section (Output & Levels). But when I go to adjust levels like stated in the manual - I can't get the blue bars to show up at all... like the mic is not picking up the pink noise.

Any help appreciated.. guess it's not meant to be for me to get this thing working tonight

Do you have any software running (autostart) that might take control of the mic? Like Skype etc.