Pioneer DEH-P7400MP with active or passive sub?

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GJ - 20 Sep 2003 10:38 GMT

Hi,

I am planning to buy a Pioneer TS-WX205A active subwoofer, to use with
my Pioneer DEH-P7400MP headunit. The TS-WX205A has it's own 100W
amplifier on board.

In my headunit-manual I found out that the maximum power output is 50W x
4. But the 2nd line says:

"for subwoofer (70 W x 1 ch/2 Ohm)
25 W x 4 (BRI)"

Does this mean that I have an amplified output for my subwoofer? And if
so, is it impossible then to connect an active subwoofer-unit to that
output?

Thanks in advance for your reply!

Regards,

-GJ

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FogHornLegHorn - 20 Sep 2003 15:32 GMT

no... it means you could bridge the headunit (front or rear speaker outs,
dunno which) to produce a 70 watt single....
Personally.... I think Pioneer should be beat with a cane for allowing such
a connection. AND LYING about the 70 watts... sure it's 70 watts, but at
1khz with 90% distortion :)

but all that aside... you'd get better sound with the powered.

FHLH

> Hi,
>
[quoted text clipped - 17 lines]
>
> -GJ

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Paul Vina - 20 Sep 2003 16:03 GMT

How do you know how it sounds? Have you ever done it? I have and I've heard
it done in a Pioneer demo in car andin a room and they would surprise you
how good they sounded.

Paul Vina

> no... it means you could bridge the headunit (front or rear speaker outs,
> dunno which) to produce a 70 watt single....
[quoted text clipped - 27 lines]
> >
> > -GJ

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Daniel Snooks - 20 Sep 2003 19:09 GMT

> Hi,
>
[quoted text clipped - 9 lines]
>
> Does this mean that I have an amplified output for my subwoofer?

It means you have an amplified output for A subwoofer.

> And if so, is it impossible then to connect an active subwoofer-unit to

that output?

The short answer is yes.
You want to connect the active subwoofer to the rear/sub RCA outputs from
the deck. Configure the output for sub. That gives you a degree of control
over the sub from the head unit.

If you haven't purchased the sub yet, you may want to consider getting the
TS-WX205 and running it off the head unit (bridged mode). I would imagine
that will save you a fair bit of money. How much bass do you need? How loud
do you listen to your music?

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Regards,
Dan Snooks

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GJ - 21 Sep 2003 09:46 GMT

> You want to connect the active subwoofer to the rear/sub RCA outputs from
> the deck. Configure the output for sub. That gives you a degree of control
> over the sub from the head unit.

After studying the manual a bit better, I found a section that talks
about a non-fading output. When activated, the audio-signal does not
pass the unit's low pass filter (for subwoofer), but is output through
the RCA output.

Sounds like that is what I need to connect an active subwoofer.

> If you haven't purchased the sub yet, you may want to consider getting the
> TS-WX205 and running it off the head unit (bridged mode). I would imagine
> that will save you a fair bit of money. How much bass do you need? How loud
> do you listen to your music?

I listen to loud music (mostly electronic music, dance), with a lot of
bass in it. Since my new car came with such crappy bass in the standard
speakers (mid and high are ok for now), I decided that this was the
moment to get a sub. And as I love bass, I thought the TS-WX205A (for
which I can get a good deal) with it's 107dB might be a good start. :)

Thanks for all replies!

-GJ

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Daniel Snooks - 21 Sep 2003 21:41 GMT

> After studying the manual a bit better, I found a section that talks
> about a non-fading output. When activated, the audio-signal does not
> pass the unit's low pass filter (for subwoofer), but is output through
> the RCA output.
>
> Sounds like that is what I need to connect an active subwoofer.

It is.

> I listen to loud music (mostly electronic music, dance), with a lot of
> bass in it. Since my new car came with such crappy bass in the standard
> speakers (mid and high are ok for now), I decided that this was the
> moment to get a sub. And as I love bass, I thought the TS-WX205A (for
> which I can get a good deal) with it's 107dB might be a good start. :)

It will be a good start, however, you are misreading the specs for the
equipment. The 107dB is a sensitivity rating, not a indication of how loud
the sub will play (although it will probably play louder then 107dB)

Signature

Regards,
Dan Snooks

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Merc - 29 Sep 2003 14:43 GMT

Hey, folks...

I am also planning to buy this Subwoofer ts-wx 205a....

So, i have a question about installation..
I have a JVC Cd radio, and it has two RCA outputs... I can connect
subwoofer through these two outputs, wright?
And my other question is about power supply.... Do i have to connect
the subwoofer to my 12V car battey, or is there any way i can connect
it through my radio?
I don't want to drag the cable through car's firewall....

Please, help!

Thank you!

--
Merc

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Shagadelik - 29 Sep 2003 15:04 GMT

> *
> the subwoofer to my 12V car battey, or is there any way i can
> connect
> it through my radio?
> I don't want to drag the cable through car's firewall....
> *

No, I don't believe so, at least not on any decks I have seen or heard
of. The size of the cable you will run also depends on the size of the
amp, but I would recommend 4awg in case you decide to upgrade in the
future.

As for RCA question, run the rear out to the sub. Make sure to run the
remote lead and power cable seperate from the RCA.
--
Shagadelik
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Daniel Snooks - 29 Sep 2003 17:10 GMT

> I am also planning to buy this Subwoofer ts-wx 205a....
>
> So, i have a question about installation..
> I have a JVC Cd radio, and it has two RCA outputs... I can connect
> subwoofer through these two outputs, right?

Yes. The TS-WX205A has RCA inputs. You also need to connect a turn-on wire
from the head unit to the sub.

> And my other question is about power supply.... Do i have to connect
> the subwoofer to my 12V car battey, or is there any way i can connect
> it through my radio?

You need to connect it to the battery. The simplest solution is to purchase
an amp install kit (8 gauge is plenty) This will have the fuse, gromet, and
ring terminals and amp-turn-on wire that you need to do the job right.

> I don't want to drag the cable through car's firewall....

That shouldn't be a problem. What car is it?

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Regards,
Dan Snooks

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