Pioneer SP-BS41-LR Speaker System HT Labs Measures

HT Labs Measures

Satellite Sensitivity: 86 dB from 500 Hz to 2 kHz

Center Sensitivity: 88.5 dB from 500 Hz to 2 kHz

This graph shows the quasi-anechoic (employing closemiking of all woofers) frequency response of the SP-BS41-LR satellite (purple trace), SP-C21 center channel (green trace), and SW-8 subwoofer (blue trace). All passive loudspeakers were measured with grilles at a distance of 1 meter with a 2.83-volt input and scaled for display purposes.

The SP-BS41-LR’s listening-window response (a five-point average of axial and +/–15-degree horizontal and vertical responses) measures +1.62/–4.50 decibels from 200 hertz to 10 kilohertz. The –3-dB point is at 67 Hz, and the –6-dB point is at 52 Hz. Impedance reaches a minimum of 6.97 ohms at 224 Hz and a phase angle of –38.35 degrees at 129 Hz.

The SP-C21’s listening-window response measures +1.35/–3.88 dB from 200 Hz to 10 kHz. An average of axial and +/–15-degree horizontal responses measures +0.98/–4.18 dB from 200 Hz to 10 kHz. The –3-dB point is at 81 Hz, and the –6-dB point is at 62 Hz. Impedance reaches a minimum of 6.31 ohms at 8.1 kHz and a phase angle of –39.38 degrees at 3.4 kHz.

The SW-8’s close-miked response, normalized to the level at 80 Hz, indicates that the lower –3-dB point is at 31 Hz and the –6-dB point is at 29 Hz. The upper –3-dB point is at 154 Hz with the FREQ control set to maximum. —MJP

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neo444's picture


LokiyaLuis's picture

lines around my eyes and varied face areas that absolutely nonexistent from my face through such active methodology.
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Rex41's picture

These speakers are great. They work for both music and movies. The bass response is excellent.Highs are not pushed or over the top.The better the amplifier you hook these up to, the better they sound. I have these paired with the Sp-CS21.The CS21 is an excellent center channel, voices sound crisp,clear and defined. Bass response is excellent as well.
Pioneer and Mr. Jones really did a great job on this set of budget speakers. It's nice to get a quality product with a great price.

SunriseGatefield's picture

This is a very tempting system. I note that Pioneer is offering a step down system with the same Center and Sub with SP-BS21s in place of the SP-BS41s--for just $399. (The BS21s apparently bear A. Jones's signature as well.) I'd be interested to know how the BS21-based system would compare... for the budget-conscious (or simply budget-constrained!) that lower price tag is particularly compelling!

JJM956's picture

I'm new in the home theater area and ordered this system. I wanted to know what connection I needed to hook up that sub-woofer to my receiver.

Scott Wilkinson's picture
The best way is to connect the receiver's LFE or subwoofer output to the Line In connector on the sub; I don't think it matters if you connect to the Left or Right input. Then, set the sub's Frequency control to its highest value (150Hz), since the sub doesn't have a crossover-bypass switch. Finally, in the receiver's menu, set all speakers to "small" and set the receiver's crossover to 100Hz, which is the frequency at which the response of the sub and front speakers cross...very nicely, I might add, wioth no dip in response.
MikeLeone's picture

I am confused about something. I have an Onkyo TX-NR509, which lists "110 watts minimum continuous power per channel, 6 ohm loads, 2 channels driven at 1 kHz, with a maximum total
harmonic distortion of 0.9% (FTC)".

And the Pioneer speakers are all (SP-BS41 and SP-BS21) listed at 6 ohms, with the BS21 listed for 80 watts, and the BS41 listed at 130 watts.

So am I correct that I need the BS-41s, since the Onkyo will push more power than the BS-21s can handle? I will mostly use them as 5.1, but may sometimes use only 2 channel mode, which means (I think) that the Onkyo will push 110 watts to 2 speakers, and the BS-21s can't handle that.

Or am I totally consfused?

Thanks for any help.

Thoth2012's picture

Your Onkyo at 110 watts per channel is fine for any speaker of any kind unless you get into lower Ohms, but besides that it is always better to have as much power as you can afford. The 110 watts is your receivers most likely the max output not continuous and even if it is continuous 110watts that only means it can run at 110 watts with no damage to your internal amp, the volume control is what is going increase the power output of your Onkyo so as long as you do not push any speaker to the point of distortion or past the rated power input of the speaker, so you always have to be careful when playing any speaker to high volumes. You blow out a speaker faster with an under powered amps/receivers than you will with high powered equipment, I have blown a lot of speakers over the years both ways too little power and too much power, rule of thumb never ever push a speaker to the point of distortion, If you have to little power you will not only blow your speakers out you may damage your power amp/receiver at the same time and if you have a lot of power more than your speaker can handle and you push the speakers till they distort and sound bad you will blow a tweeter first or destroy your speaker completely. So on that note your Onkyo has a nice supply and both speakers are fine to run. I have learned you can not have too much power the more in most cases the better the sound you do not have to use all you have.

Thoth2012's picture

That just means that your Onkyo can run at 110 watts for a long period of time without any damage to itself thus continuous, it does not mean that is the amount of power that it is sending out to you speakers as soon as you here sound, 110watts would be very very loud. I would say that you may have to turn the volume up to the half way point on your Onkyo to reach that kind of output. Most of the time you are most likely only using anywhere from 5 watts to 30-40 watts in general listening even at 40 watts I think It will be pretty loud. I hope this helps.

Thoth2012's picture

I think you can still buy outboard power monitors for stereo so you could see how much power your are using, I think if the are still available they will only monitor the two front main speakers on a 5.1 system but that is fine, they are fun to watch also, leds that flicker to the beat of music as to how much power the music is demanding from your equipment.

Thoth2012's picture, this the best place I could find for power monitor kits, not easy to find already built ones these days.

a sethi's picture

Strangely, this system is discontinued on the Pioneer website. They instead have on their current list (in the same range) the cheaper "SP-PK21BS" 5.1 Speaker Package or the more expensive "SP-PK51FS" 5.1 Speaker Package including two floor standing speakers.

Would anyone be able to shed some light on the capabilities of these two systems as compared to the SP-BS41-LR.