Sensitivity - 88db 8-ohm vs 84db 6-ohm - AVS Forum
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post #1 of 8 Old 04-29-2012, 09:15 AM - Thread Starter
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I just got a pair of Pioneer sp-bs21 speakers


They have sensitivity of 84 db @ 6-ohms, which I guess means they are not very efficient.

When I swapped these in to where a pair of Sony SS-B3000 were, driven by Denon 1610, I noticed I have to turn up the volume much higher.

I was looking to drive these with a cheap amp like
Lepai Tripath Class-T Hi-Fi Audio Mini Amplifier with Power Supply

or a cheap Sherwood receiver.

I'm wondering if these will have enough power to drive these pioneer speakers.
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post #2 of 8 Old 04-29-2012, 09:27 AM
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you have to more than double the power for a 4db difference in sensitivity.

I just depends how loudly you plan to play your speakers. How do you plan to use them?

I have a couple of those Lepai amps, they work great as long as you dont turn them up all the way.

The cheap Sherwood will give you more options and inputs and probably comes with a remote if that matters.


For $25 it wouldn't hurt to try one out.

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post #3 of 8 Old 04-29-2012, 09:40 AM
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Quote:
Originally Posted by Subjga View Post

or a cheap Sherwood receiver.

I'm wondering if these will have enough power to drive these pioneer speakers.

The Sherwood will be fine
http://www.parts-express.com/pe/show...number=252-125

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post #4 of 8 Old 04-29-2012, 09:41 AM - Thread Starter
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Thanks afrogt,

I plan on using these pioneers along with a powered 12 inch sub to listen to mostly music, and the occasional movie (streaming) in a 20 x 15 foot room. Doesn't have to be really loud, but the sub can really kick so they have to keep up.

I plan on connecting only a laptop as the source.

I'm wondering if I made a mistake getting these speakers, and whether I should get something else with higher sensitivity, like maybe:
Dayton Audio B652 6-1/2" 2-Way Bookshelf Speaker

Sensitivity 87db
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post #5 of 8 Old 04-29-2012, 10:00 AM
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No way to connect a powered sub with the Lepai amp. Might as well get the Sherwood receiver.

You may want to get a AV receiver with a dedicated sub output or a stereo receiver with sub outputs. A used AV receiver might be a good way to go.

Check your local craigslist, where are you located?

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post #6 of 8 Old 04-29-2012, 10:34 AM
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It looks like the Sherwood, does not have a sub out connection.
I would maybe, look at the Denon instead.
http://www.accessories4less.com/make...eceiver/1.html

I much prefer the Pioneer over the Dayton speakers.

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Speakers > MB Quart VS05, Boston VS260, Snell K7
Subwoofer > Mordaunt Short Aviano 7
Receiver > Tascam PA-R200, Pioneer VSX-30
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post #7 of 8 Old 04-29-2012, 10:43 AM - Thread Starter
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I'm not too worried about a subwoofer out.

I can connect two different ways:
1) Laptop -> powered subwoofer high-level input, subwoofer has line-out -> goes to amp (Lepai, Sherwood, or whatever) input -> output to bookshelf speakers.
*This will be the final setup.

2) In the short term, it will be plugged in to a sub that has the bash300 amp, so no speaker out.
Laptop -> Y-splitter, one output to amp and speakers, 2nd output to powered sub.

zieglj, glad to hear you prefer the Pioneers over the Daytons. Are they not sensitive enough for the Lepai amp?

afrogt, so. cal.
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post #8 of 8 Old 04-29-2012, 11:03 AM
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Quote:
Originally Posted by Subjga View Post

zieglj, glad to hear you prefer the Pioneers over the Daytons. Are they not sensitive enough for the Lepai amp?

The choice is yours to make - I would prefer the Sherwood, and it
is cheaper here with free shipping > J&R
http://www.jr.com/sherwood/pe/SHE_RX4105/

If you want a real nice set of speakers - JBL did good with this one.
the HLS610, and they look to be in real good shape.
http://www.ebay.com/itm/330721747877...84.m1438.l2649

__________________________________________
Who and Where - is the Way, the Truth and the Life?

Speakers > MB Quart VS05, Boston VS260, Snell K7
Subwoofer > Mordaunt Short Aviano 7
Receiver > Tascam PA-R200, Pioneer VSX-30
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