Go Back   Team-BHP > Under the Hood > In-Car Entertainment > Ask the Gurus


Reply
 
LinkBack Thread Tools Search this Thread
Old 9th August 2007, 18:26   #1
Team-BHP Support
 
Rtech's Avatar
 
Join Date: Apr 2004
Location: Bombay
Posts: 5,772
Thanked: 109 Times
Default Can a subwoofer be powered directly off a Head unit?

As the title says, can a woofer be powered directly off certain head units? If you plan on listening to music at moderate to low volume, can a head unit provide sufficient power to operate a woofer?

I've seen the functions on my old Pioneer that show me some controls for a woofer. Does that mean the HU can power the woofer? If not, then what are those controls for?

Or are we destined to use a separate amp for all eternity?
Rtech is offline   Reply With Quote

Old 9th August 2007, 18:30   #2
Senior - BHPian
 
Join Date: Mar 2006
Location: Faridabad
Posts: 6,809
Thanked: 243 Times
Default

yes it can but the HU output in terms of power would be quite less to get max from the sub.
low_bass_makker is offline   Reply With Quote
Old 9th August 2007, 20:04   #3
Team-BHP Support
 
Vid6639's Avatar
 
Join Date: Jul 2006
Location: Bangalore
Posts: 10,046
Thanked: 7,027 Times
Default

Quote:
Originally Posted by Rtech View Post
I've seen the functions on my old Pioneer that show me some controls for a woofer. Does that mean the HU can power the woofer? If not, then what are those controls for?
Not really advisable to run it off the HU as the HU will not be able to drive the sub to it's potential. It will not sound very good.

The options in the HU allow you to control the sub which is either connected to an amp to the preout or directly to the rear speaker channels of the HU if you don't have an amp.

To enable this setting, you have to switch off the pio HU and go to the settings menu by keeping function button pressed. There you can select for the rear channel to be in S/W mode or full range mode. If you select S/W mode you can then adjust the level and LPF setting for the sub.

If you have an amp and sub then the rear should be full range mode and the SW menu controls the sub connected to the preout of the HU.

Apologies if it's a little confusing.
Vid6639 is offline   Reply With Quote
Old 9th August 2007, 20:13   #4
Distinguished - BHPian
 
Sam Kapasi's Avatar
 
Join Date: Jul 2005
Location: Mumbai (but wat
Posts: 6,971
Thanked: 1,101 Times
Default

No Rtech, you cannot. You will need to buy an amplifier.

There are a few models from Pioneer that have the capability to drive a small subwoofer. In any case it sounds like crap. I know your HU (A double Din Clarion - yummy!) and I know your Bass tube. You need an amplifier, no matter what volume you want to play it at.

If nothing else, then even a Sony 502 or 222. But you need an amplifier.
Sam Kapasi is offline   Reply With Quote
Old 9th August 2007, 20:48   #5
Senior - BHPian
 
Join Date: Jul 2006
Location: Madras/Py
Posts: 7,548
Thanked: 400 Times
Default

I had the same doubt a long long time ago & the doubt was put to rest by a friend of mine who did that & i was like, 'where is the sound coming from?' the sub just farts. A pair of good speakers sound (put out bass)way better than that.
esteem_lover is offline   Reply With Quote
Old 9th August 2007, 23:21   #6
Team-BHP Support
 
navin's Avatar
 
Join Date: Mar 2004
Location: mumbai
Posts: 18,873
Thanked: 1,669 Times
Default

Quote:
Originally Posted by Rtech View Post
As the title says, can a woofer be powered directly off certain head units?
Not really. No HU I know of can swing the amps to drive a 10-12" sub. Not even the ones with Class D amps not unless the subs are 6 or 8" but then these would be woofers not subwoofers.
navin is offline   Reply With Quote
Old 10th August 2007, 11:33   #7
Senior - BHPian
 
sushrutha's Avatar
 
Join Date: Mar 2006
Location: Chikmagalur/Ban
Posts: 1,598
Thanked: 210 Times
Default

Ignore my knowledge.
Whats the difference between a woofer and subwoofer ?
sushrutha is offline   Reply With Quote
Old 10th August 2007, 11:35   #8
Senior - BHPian
 
Join Date: Mar 2006
Location: Faridabad
Posts: 6,809
Thanked: 243 Times
Default

Quote:
Originally Posted by sushrutha View Post
Ignore my knowledge.
Whats the difference between a woofer and subwoofer ?
In layman terms woofer can give 40-150hz and the sub-woofer can give 20-80 hz.

The sub-woofer can go much low when compared to the woofer.
low_bass_makker is offline   Reply With Quote
Old 10th August 2007, 11:36   #9
Team-BHP Support
 
navin's Avatar
 
Join Date: Mar 2004
Location: mumbai
Posts: 18,873
Thanked: 1,669 Times
Default

Quote:
Originally Posted by sushrutha View Post
Ignore my knowledge.
Whats the difference between a woofer and subwoofer ?
the lowest 2/3 rd octave or so.
navin is offline   Reply With Quote
Old 10th August 2007, 11:46   #10
Team-BHP Support
 
Rtech's Avatar
 
Join Date: Apr 2004
Location: Bombay
Posts: 5,772
Thanked: 109 Times
Default

Quote:
Originally Posted by Sam
No Rtech, you cannot. You will need to buy an amplifier.....You need an amplifier, no matter what volume you want to play it at.
Well thats clear enough!

Quote:
Originally Posted by E_L
I had the same doubt a long long time ago & the doubt was put to rest by a friend of mine who did that & i was like, 'where is the sound coming from?' the sub just farts
And so is that!

2 channel amp it is.

Question: Once the sub is connected to the amp, are all adjustments to be done only on the amp or can the HU be used to make changes as well? Basic settings like raising/lowering of the sub effect?
Rtech is offline   Reply With Quote
Old 10th August 2007, 11:57   #11
Senior - BHPian
 
Join Date: Mar 2006
Location: Faridabad
Posts: 6,809
Thanked: 243 Times
Default

Quote:
Originally Posted by Rtech View Post

Question: Once the sub is connected to the amp, are all adjustments to be done only on the amp or can the HU be used to make changes as well? Basic settings like raising/lowering of the sub effect?

A good hu will have this function.
low_bass_makker is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Components connected directly to head-unit w/o amp? dijeesh Ask the Gurus 8 4th December 2012 08:25
Subwoofer unit advice? willy Ask the Gurus 15 4th February 2008 22:20
reading on head unit amit_sound Ask the Gurus 5 15th May 2006 12:49
Need a DVD head-unit Sahil Ask the Gurus 1 24th June 2005 13:43


All times are GMT +5.5. The time now is 03:40.

Copyright 2000 - 2014, Team-BHP.com