Pioneer 4950 Direct Sub function (question)

**tph** · December 10th, 2007 02:20 AM

Pioneer 4950 Direct Sub function

- ano ibig sabihin nito?
pwede na ba sya kabitan ng sub without an amp?

**ale828** · December 10th, 2007 08:38 PM

Yup, you can use the Pioneer HU to drive a small sub but the output is only 50 watts x 2 or 70 watts x 1. Quite weak but better than stock. It won't make bayo, if you want that kind of sound quality.

**userfriendly** · December 10th, 2007 08:58 PM

Originally Posted by ale828

Yup, you can use the Pioneer HU to drive a small sub but the output is only 50 watts x 2 or 70 watts x 1. Quite weak but better than stock. It won't make bayo, if you want that kind of sound quality.

Over stated yung 50 watts x2 ng Pioneer. Its more like 12 watts x2. Any sub will be seriously under powered pag sa HU nakatap. Kahit seps or coaxial medyo bitin sa HU power.

**tph** · December 11th, 2007 04:27 AM

pero significant naman ba yung magiging difference kesa sa stock?

I have DLS seps sa front and Pioneer coax sa likod.

baka sakaling makatipid ako by not buying an amp.

**tph** · December 11th, 2007 05:29 AM

SQ lang po ako.

**toolightz** · December 12th, 2007 03:54 AM

anong model ng seps mo sir??? pero sa wattage ng DLS mejo mataas than the power ng HU!!!

User was right!!! even pioneer HU don't give that enough power!!!

well kanya kanya tayong preferences if it sounds good to you so its done IMHO

**tph** · December 12th, 2007 05:39 AM

Originally Posted by toolightz

anong model ng seps mo sir??? pero sa wattage ng DLS mejo mataas than the power ng HU!!!

User was right!!! even pioneer HU don't give that enough power!!!

well kanya kanya tayong preferences if it sounds good to you so its done IMHO

sir 50 W RMS / 80 W max yung DLS. di ako masyado mataas magpatugtog... maybe 3/4 lang ng volume ng ipod + vol 25 ng head unit.

malaki naman kaya difference pag kinabitan ko ng sub without an external amp?

since kasama naman sya sa features nung HU.

**userfriendly** · December 12th, 2007 04:57 PM

Originally Posted by tph

sir 50 W RMS / 80 W max yung DLS. di ako masyado mataas magpatugtog... maybe 3/4 lang ng volume ng ipod + vol 25 ng head unit.

malaki naman kaya difference pag kinabitan ko ng sub without an external amp?

since kasama naman sya sa features nung HU.

I checked my 4950 manual. Did not even know this feature was there.

Di kasi ako nagbabasa eh dinadaan sa kapa.

The manual claims 22 watts x 4 rms. The direct sub function combines the rear speaker outs to a 70 watt 2 ohm max. As I said in a previous post. Dont belive these figures. Overstated yan. Ganyan talaga lahat ng HU manufacturers.

You can connect your sub directly to the HU. It will work. Same with the DLS. If it sounds good enough for you then your all set. If not then stick with it until you have cash for an amp.

Personally, I still prefer a dedicated amp for my seps and subs. A 4 channel Fenton or V12 amps is perfect for budget setups. They give a lot of power for their price. I only use the HU's amp for rear fill.

**toolightz** · December 13th, 2007 02:28 AM

di kaya uminit ng todo yung HU mo hanggang sa magprotect or masira?
imagine 50rms plus yung sub siguro di bababa sa 150rms tapos 22w lang ang magddrive???

**IceBurn_505** · December 16th, 2007 11:25 PM

I'm using P7950UB and I have a subwoofer connected directly to it using it's direct sub functionality. Significant yung difference in SQ. I don't know kung may high pass filter function yung model mo but if it has, use it in combination with the sub. Don't expect loud, boomy bass though. And don't worry about having a higher rated subwoofer than your HU. What's important is you match the impedance. Kung 4 ohm yung sub mo, connect it to the rear left channel; kung 2 ohm, connect mo sa rear right making sure nothing is connected to the rear left in this configuration; or kung may dalawa kang 4 ohm sub, just connect to both rear channels.
Try it out. Kung bitin yung bayo para sayo, then you have to add an amp.