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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: Why is the bass part of a speaker so hard to drive? posted by Mal P on March 29, 2005 at 01:36:27:
A $150 bottom-of-the-line 100wpc Sony Receiver can easily drive 99% of bass drivers or subwoofer drivers available ... although one would want more than 100wpc for most rooms to handle the long driver excursions required for loud bass in the 20-40Hz. octave.Better amplifiers than a $150 Sony receiver will certainly have no problems with 99% of speakers.
4 ohm Subwoofer drivers are often driven by inexpensive plate amplifiers.
"Difficult to drive speakers" are mainly an audiophile myth, or perhaps a salesman's trick to sell more expensive amplifiers (many salesmen greatly overstate the "danger" of clipping distortion for the same reason).
Some speakers are low efficiency and require 3dB or 6dB more power than most, but few speakers are really "difficult to drive", even when using a cheap receiver.
I have a dual 12" subwoofer in my bedroom with 87dB efficiency 4 ohm drivers powered by a $150 Sony receiver. The receiver never gets hot in spite of the 4 ohm loads (not recommended for that receiver) and mediocre driver efficiency. The receiver can provide far more bass output than my ears can handle in my 150 square foot bedroom and also did okay when tried in my 800 square foot living room (where it did get fairly hot with 4 ohm subwoofer drivers, although never shut down). It had no problem with an 8 ohm DVC subwoofer driver).
I have also powered very inexpensive subwoofers built for low income friends with $88 Pioneer receivers (100wpc) which have held up well for years (although I initially had many doubts.)
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Follow Ups
- "difficult to drive" is mainly an audiophile urban myth along with 100's of hours for break-in - Richard BassNut Greene 03/29/0508:15:37 03/29/05 (24)
- You are kidding, right ??? NT - Lowrider 08:49:02 03/30/05 (12)
- No, he is tragically serious.......... - michaelb 18:36:01 03/30/05 (11)
- "I guess for small rooms with no bass reproduction needed in the 20-40HZ range" (what does that mean?) - Richard BassNut Greene 09:30:41 03/31/05 (10)
- Personaly ? - Stale 18:33:22 04/4/05 (0)
- Most people have lousy sound, particularly bass... - Lowrider 00:52:41 04/1/05 (2)
- Re: Most people have lousy sound, particularly bass... - MarkgM 11:18:37 04/1/05 (1)
- It is not a matter of power... - Lowrider 12:19:12 04/1/05 (0)
- There is a difference between a Best Buy JLB and a High End Electrostat Speaker - michaelb 10:21:35 03/31/05 (5)
- Wanting to believe that one's speakers are a "difficult load" and require "100's of hours" of break-in ... - Richard BassNut Greene 10:36:57 03/31/05 (4)
- Number of Dynaudios w/ about 3 Ohms (nt) - Stale 18:30:46 04/4/05 (0)
- sorry to tell you that there are a number of speakers that present loads that are difficult, and my receiver story - mark maloof 02:13:52 04/1/05 (0)
- "Very Unusual" ? Well, here is a third example... - michaelb 11:22:42 03/31/05 (1)
- As long as you're at it... - MarkgM 12:09:17 03/31/05 (0)
- Re: "difficult to drive" is mainly an audiophile urban myth along with 100's of hours for break-in - Mal P 15:01:10 03/29/05 (3)
- Re: "difficult to drive" is mainly an audiophile urban myth along with 100's of hours for break-in - hahax 19:43:03 03/29/05 (2)
- Re: "difficult to drive" is mainly an audiophile urban myth along with 100's of hours for break-in - Mal P 20:28:20 03/29/05 (1)
- But impdence is more important to tube amps than sensitivity. - mark maloof 02:22:53 04/1/05 (0)
- Yeah, - one can't tell the difference with Lo-Fi gear -t - Sordidman 09:31:28 03/29/05 (6)
- Re: Yeah, - one can't tell the difference with Lo-Fi gear -t - theaudiohobby 07:03:10 03/30/05 (5)
- No, I'm cool, - what about you? -t - Sordidman 11:02:38 03/30/05 (4)
- really? - theaudiohobby 02:50:22 03/31/05 (3)
- yep......... - Sordidman 08:27:51 03/31/05 (2)
- I have never implied that components don't break-in -- please don't misquote me - Richard BassNut Greene 09:44:23 03/31/05 (1)
- A 10 minute break in? Vs What? - Sordidman 11:08:17 03/31/05 (0)
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