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View Full Version : Pioneer DEH-P880PRS and Preout option Tweeter, Mid, Sub



ToxicBanana
02-12-2008, 04:35 AM
Ok, so as I understand it. Audio crossovers are a class of electronic filters designed for the purpose of splitting the audio signal into separate frequency bands which can be handled by individual loudspeaker drivers.

Now that being said, the Pioneer DEH-P880PRS has two preout options.

1) (normal) Front, Rear, Subs
2) (3 way network) Tweets, Mids, Subs

I bought a HD-62 a few years back but the Mid was upgraded to a ES-07 7" Mid/Woofer. so would that make the crossover not perfectly made for this mid? and wouldn't I be better off with the amp powering the tweets and mids independently?

HD-62US Set Specs.
Midrange: 6.5" Cast carbon treated.
Mounting dept: 2 3/4”.
Crossover: ES-200US “Transient Optimized” Elliptic 4th order 2-way with Built-in UpStage design.
UpStage Ready!
Power handling: 200 watt RMS @ 100Hz High Pass.
Frequency response: 65-20kHz.
Sensitivity: 92.6 dB.
Impedance: 4 Ohm.
Main tweeter: DRT-25 extended range 1” silk.
7" Woofer Specs
Diameter: 7” (180mm)
Sensitivity: 92.2 dB
Power Handling: 100 Wrms (200W pk) (IB) // Sealed (200rms+)
Frequency Response: 50 ~ 5000 hZ
Nominal Impedance: 4 Ohms
Voice Coil Diameter: 1.5” (38mm)
Dimensions:

The Amp is a Rockford Fosgate 1000 25 to Life.
Birth sheet is.
4ohms = 108Watts X 4
1ohm sub = 956watts.

ebrunn
02-12-2008, 06:27 AM
Active is better in pretty much all cases. If you got the deck and the amp, go for it.

ToxicBanana
02-12-2008, 06:32 AM
Sorry to seem dense.
but by "Active" you mean;
option "2" (three way network)?

ebrunn
02-12-2008, 06:39 AM
yep, switch it to network, them run the tweet amp off the high pre out, run the mid amo off the mid pre out, and the woofer amp off the low-preout.

ToxicBanana
02-12-2008, 06:47 AM
The only thing that bugs me is that even though these speakers are rated for 100 Watts Rms I remember pumping more through them.

http://www.sonicelectronix.com/item_6554_Hifonics+TXi+6406.html
I owned this model (or maybe an older one) and the amp would get pretty hot when running those components.
they are rated for 340watts and I know they did not go that high, I assume 220ish?

figuring a 70amp fuse @ 12v @ 55% efficiency = 230Watts X 2

Playing the tweets and mids separate would mean this amp would be at 4Ohms instead of 2 Ohms thus lowering my output watts by 300% (109 Watts RMS vs 284 Watts RMS) and that may mean I would need another amp so the Mids can be bridged.
If thats the case, is it worth adding an amp or using the crossover?

nismos14
02-12-2008, 04:14 PM
That is not true, they both still see the same power, they don't play the same frequencies so the power is distributed all about the power band.


You do NOT need to run active just because you have the upgraded 7".

katodevin
02-13-2008, 02:02 AM
If you run in network mode, then do you lose the ability to adjust the speaker balance left/right front/back? What do you do to remedy this?

ebrunn
02-13-2008, 02:52 AM
If you run in network mode, then do you lose the ability to adjust the speaker balance left/right front/back? What do you do to remedy this?

Most likely you can though.

ToxicBanana
02-13-2008, 04:33 AM
Left right you keep, no rear, but I don't run rear speakers.

nismos14
02-13-2008, 09:04 AM
If you run in network mode, then do you lose the ability to adjust the speaker balance left/right front/back? What do you do to remedy this?
In network mode, 1: you MUST be running active in most cases, 2: you use TIME ALIGNMENT instead of fade/balance. I'm guessing many of you are throwing it into network mode not knowing what it does.

ToxicBanana
02-13-2008, 09:15 AM
you forgot to respond here :D

http://www.caraudio.com/forum/showthread.php?t=292040

nismos14
02-13-2008, 09:21 AM
Done ;)

katodevin
02-14-2008, 07:52 PM
In network mode, 1: you MUST be running active in most cases, 2: you use TIME ALIGNMENT instead of fade/balance. I'm guessing many of you are throwing it into network mode not knowing what it does.

So if I have mid and tweet speakers in all four corners, the left woofers are controlled by one channel, and the right woofers are controlled by another. If I were to have more/less efficient/loud speakers in the front than in the back, how would I go about getting my sound balanced from front to back?

I understand you said TIME ALIGNMENT, but plz forgive my lack of knowledge and elaborate how time alignment will allow the front/back adjustment.

I've had a 880prs running in standard mode for a while, and am very happy with it. I am just interested in perhaps taking it to the next level and trying the network mode.

Thanks in advance.


------- EDIT -------
I may have found the answer to my own question. Ideally, I would take the MID output from the 880 in network mode, send it to a active crossover unit, where it would get divided into 4 channels for each corner. Then it would go to a 4 channel amp. Same for the tweets, etc. Is this right? or am i totally stupid? If this is the case, do I have to make all the TA adjustments on the active crossover, instead of on the head unit?

nismos14
02-14-2008, 08:30 PM
So if I have mid and tweet speakers in all four corners, the left woofers are controlled by one channel, and the right woofers are controlled by another. If I were to have more/less efficient/loud speakers in the front than in the back, how would I go about getting my sound balanced from front to back?

I understand you said TIME ALIGNMENT, but plz forgive my lack of knowledge and elaborate how time alignment will allow the front/back adjustment.

I've had a 880prs running in standard mode for a while, and am very happy with it. I am just interested in perhaps taking it to the next level and trying the network mode.

Thanks in advance.


------- EDIT -------
I may have found the answer to my own question. Ideally, I would take the MID output from the 880 in network mode, send it to a active crossover unit, where it would get divided into 4 channels for each corner. Then it would go to a 4 channel amp. Same for the tweets, etc. Is this right? or am i totally stupid? If this is the case, do I have to make all the TA adjustments on the active crossover, instead of on the head unit?


THe point of network mode is so you do not have to use an external crossover. It has 3 - way actve capability built in. Now for your specific use, which is not recommended, you could use the gains on your amps to adust for different variances in the tweet and midbass, and use your fader, but not much else. A proper setup would be one in which you do not use more than 2 midbass (could be more) but in the front doors, and then 2 tweeters.

katodevin
02-14-2008, 09:19 PM
nismos14 - Completely understood now. Thanks for the explanation. I have a 2 door coupe and rarely put ppl in the back.

In your opinion, should I just forget about the rear deck speakers, and take advantage of my 880's active crossover, and run only speakers in my front door?

The only thing i worry about is not having enough of a "full" sound.

nismos14
02-14-2008, 10:55 PM
nismos14 - Completely understood now. Thanks for the explanation. I have a 2 door coupe and rarely put ppl in the back.

In your opinion, should I just forget about the rear deck speakers, and take advantage of my 880's active crossover, and run only speakers in my front door?

The only thing i worry about is not having enough of a "full" sound.


Being that you have a 2 door and rarely have people in the back I would lose the rear fill. Havin a full sound stage can be accomplished with just front speakers.