I have the following speakers for my home
entertainment/theatre/karaoke system.  I've been using a Pioneer
VSX-455 Receiver and I suspect that it's not a good match for my
speakers.  I don't know how to evaluate which receiver/amplifier would
give me the best speaker performance.

My question:  Are my suspicions correct that the Pioneer system that I
have now is not a good match, and why?  What amplifier/receiver would
be a good match for the speaker system that I have now?  What effect
does the subwoofer have on the performance of the other speakers?
 
This is the speaker system:

Eosone RSF 400 Tower Loudspeakers - 2 each

Overall Frequency Response
38Hz - 22kHz
Recommended
Amplification (8 ohm)
25W min, 125W max
Sensitivity
86dB
Driver Complement
1 x .75" (19mm)
titanium dome tweeter
1 x .5" (12mm)
polycarbonate tweeter
1 x 4" (100mm) midrange
1 x 8" (200mm) woofer
Enclosure Type
semi-open midrange; bass reflex
loaded woofer
Crossover Frequencies
400Hz, 4.7kHz
Nominal Impedance
compatible with 8ohm amplifiers
Dimensions (h x w x d)
40.5"H x 10.8"W x 14.8"D
102.9cm H x 27.4cm W x 37.6cm D
Weight
63lbs

 

Eosone RSR350 Surround Speaker - 2 each

Overall Frequency Response
70Hz - 22kHz
Recommended
Amplification (8 ohm)
15W min, 125W max
Sensitivity
88dB

Driver Complement
2 x .75" (19mm)
titanium dome tweeters
1 x 6.5" (165mm) woofer
Enclosure Type
sealed
Crossover Frequency
4.0kHz Nominal Impedance
compatible with 8ohm outputs
Dimensions (h x w x d)
12"H x 15"W x 15.5"D
30.5cm H x 38.1cm W x 14.0cm D
Weight
17lbs

 

Eosone RSC-300 Center Channel Speaker - 1 each

Overall Frequency Response
90Hz - 22kHz
Recommended
Amplification (8 ohm)
15W min, 125W max
Sensitivity
88dB

Driver Complement
1 x .75" (19mm) shielded tweeter
1 x 5" (12mm) tweeter

2 x 5.25" (133mm) shielded woofers

Enclosure Type
sealed
Crossover Frequency
3.0kHz 

Nominal Impedance
compatible with 8ohm outputs
Dimensions (h x w x d)
7"H x 17"W x 8"D
17.8cm H x 43.2cm W x 20.3cm D
Weight
16lbs

 

Eosone RSP-910 Powered Subwoofer - 1 each

Overall Frequency Response
32Hz - 200Hz
Amplifier Power

55W rms / 77W peak power

Driver Complement
1 x 10" (250mm) woofer

Enclosure Type
bass reflex
Crossover Frequency
3.0kHz 

Active lowpass Filter (crossover frequencies)

adjustable, 80 - 160Hz

Dimensions (h x w x d)
13"H x 17"W x 15.5"D

33cm H x 43.2cm W x 39.4cm D
Weight
16lbs

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Request for Question Clarification by vinods-ga on 24 Dec 2002 13:25 PST

Hi, 

I would like to dispose off something first from the argument.

Quoting from your question, 

1. "Are my suspicions correct that the Pioneer system that I have now
is not a good match, and why?"
(IF SO,) 
2. "What amplifier/receiver would be a good match for the speaker
system that I have now?"

(IN ANY CASE,)
3. "What effect does the subwoofer have on the performance of the
other speakers?"

Your question can be divided into 3 parts of which 2 are related as
can be seen above and the third part can be answered forthwith...

Answer to (3.) 
No effect internally. 

As a subwoofer, all it does is provides the 'outlet' for extremely low
frequency sound, something that you can 'feel in your guts'!
This is a separately encoded channel (THE .1 IN YOUR DOLBY 5.1) and
should in no way have any effect on the sound from your speakers.

As for the rest, I will work on it further based on some clarification
requests that I will post. As of now, please let me know

- if you acquired the system you have as a whole OR you put it
together.

-IF you did put it together, did you add the system to the speakers or
vice-versa

- What it is that you feel is not right - based on your experiences of
the current system that makes you feel NOT alright?

Warm regards and Merry Christmas!
Vinods-ga

---

Clarification of Question by spencercat-ga on 24 Dec 2002 16:33 PST

I acquired the system separately, at the same time.  I compared Bose
to Eosone and liked the sound of Eosone better.  I had "heard" Pioneer
manufactured a good receiver/amplifier and purchased the VSX-455
immediately after I left the speaker demonstration.

As for what doesn't feel alright, I would have to say when I visit my
friends homes and they have less expensive systems but the sound seems
richer.

One note on my system.  Sometimes when I turn my system on the right
front speaker doesn't engage immediately.  Sometimes I have to turn
the volume up or flip between Studio, Prologic or Sim Surround to get
it to kick in.

Hope this helps.

Merry Christmas