yamaha rx-v659 or yamaha rx-v757 ?

[alex aleluia]

please help me...i´m considering these two amplifiers, i´m going to use them to watch movies most of the time...i read the manuals of both and they are both 7.1, and i don´t care about the i-pod connection in the rx-v659..so...wich one should i buy ? please help me !!!

 

[speakerman39]

please help me...i´m considering these two amplifiers, i´m going to use them to watch movies most of the time...i read the manuals of both and they are both 7.1, and i don´t care about the i-pod connection in the rx-v659..so...wich one should i buy ? please help me !!!

Only you can really answer that question but I will add my .02. I use to own an RX-V650 and really liked it. Then I bought me an hdtv and wanted component upconversion. The 650 maxed out with only S-video upconversion so I then upgraded to an RX-V757. Sure, the 757 had full component upconversion but it sure was weak on power. I mean the 650 seemed to have more real world power. It was quite noticeable and as a result I only had the 757 for about 3 months. That is 3 months too long if you ask me. I decided to go with a Pioneer 1015 and could not be happier. Much more real world power and the sound imho was much fuller. From what I understand the RX-V659 has Burr-Brown dac's and the 757 does NOT. Therefore, you will get better sound quality as compared to the 757. My only concern, however, is hopefully the 659 will NOT wimp out with respect to real world power like the 757 did. Yamaha is the ONLY brand that I am aware of that employs Burr-Brown dac's into their mid-level receivers such as is in the design of the RX-V659. Hope this helps and good luck in making your decision. Happy Hunting!!!!!

 

[bryantm3]

what are bur brown dacs?? also, what is weak about the RX-V757? i have this reciever. will getting a seperate amp solve what is weak or whatever?

 

[mike c]

sound and vision magazine bench tested the 657 receiver (one model older than the 659)
it scored 67wpc x 5
181wpc x 1
120wpc x 2
(numbers more or less)

way better than the 640 I have, but still, I have no complaints with my 640

 

[bryantm3]

are you sure that's right? the yamaha 657 is only rated for 95 WPC.

 

[mike c]

its rated at 95wpc 0.something THD
if im not mistaken these are 1% or 1khz ... I forget. (somewhere on their site,they explained that is what they mean by "clipping")

here it is word for word:
Output at clipping (1 kHz into 8/4 ohms)
1 channel driven: 181/278 W (22.6/24.4 dBW)
5 channels driven (8 ohms): 67 W (18.3 dBW)Distortion at 1 watt (THD+N, 1 kHz)
8/4 ohms: 0.02/0.03%
Noise level (A-wtd): –76.2 dB
Excess noise (with sine tone)
16-bit (EN16): +2.75 dB
Frequency response: 20 Hz to 20 kHz +0, –0.4 dB

MULTICHANNEL PERFORMANCE, ANALOG INPUT
Reference input and output level is 200 mV; volume setting for reference output level was –3.
Distortion (THD+N, 1 kHz, 8 ohms): 0.01/0.01%
Noise level (A-wtd): –92.7 dB
Frequency response: <10 Hz to 104 kHz +0, –3 dB

STEREO PERFORMANCE, DIGITAL INPUT
All signals were PCM and 16-bit except where noted otherwise. Reference level is –20 dBFS; all level trims at 0. Volume setting for reference level was –3.5.
Output at clipping (1 kHz, 8/4 ohms)
both channels driven: 129/188 W (21.1/22.7 dBW)
Distortion at reference level: 0.02%
Linearity error (at –90 dBFS): 5.6 dB
Noise level (A-wtd): –78.8 dB
(with 96-kHz/24-bit signals: –81.7 dB)
Excess noise (with/without sine tone)
16-bit (EN16): 0.8/3.0 dB
quasi-20-bit (EN20): 11.3/13.1 dB
Noise modulation: 4.2 dB
Frequency response: 20 Hz to 20 kHz +0, –0.1 dB
(96-kHz/24-bit signals: 5 Hz to 42 kHz +0, –1.9 dB)

 

[alex aleluia]

hummm....

so..basically what you are saying is that if i don´t need lots of power i can go for the RX-V757 ? i don´t need a very powerful amplifier because my room is like a studio ( wood covered walls and ceiling, and the floor has carpet) and any sound is quite easy to listen. i have a pair of B&W speakers wich i´m going to continue using (the DM302) and i never noticed lack of power with my old (very old ) yamaha RX-V390RDS...by the way, thanks for all the replies

 

[bryantm3]

so..basically what you are saying is that if i don´t need lots of power i can go for the RX-V757 ? i don´t need a very powerful amplifier because my room is like a studio ( wood covered walls and ceiling, and the floor has carpet) and any sound is quite easy to listen. i have a pair of B&W speakers wich i´m going to continue using (the DM302) and i never noticed lack of power with my old (very old ) yamaha RX-V390RDS...by the way, thanks for all the replies

actually it doesn't seem like anyone has actually answered your question yet, from what i can see.

i read about the yamaha RX-V390RDS just a minute ago, and it was supplying your speakers with about 60 watts per channel of power (with variations, as it only supplied the rear with 15 watts!), as the RX-V757 will provide 100 watts per channel for all 7 channels (or however many you have). i have an RX-V757 and i find it perfectly fine for my setup, except i need more power than 100 watts per channel. you might also want to find out the recommended power for those speakers you've got - 100 watts might be just right or not enough, or possibly, too much.

 

[speakerman39]

what are bur brown dacs?? also, what is weak about the RX-V757? i have this reciever. will getting a seperate amp solve what is weak or whatever?

Burr Brown is a brand of digital to analog converters (dac) that are usually found in more expensive products. This is why I was pointing out that Yamaha is the ONLY brand I have seen to offer the Burr Brown dacs in a mid-level receiver (RX-V659). As I mentioned in my previous post the RX-V650 was rated at 95 X 7 and seemed to have more real world power than the RX-V757 I upgraded to. However, I only owned the 757 for 3-4 months as that was 3-4 months too long if you ask me. I am more than happy with my Pioneer 1015. In terms of real world power, the 757 is not in the same league imho. Feature wise, the 757 does offer a bit more tweaking capablility but nothing overly significant. Hope this helps. Happy Hunting!!!!!

 

[bryantm3]

Burr Brown is a brand of digital to analog converters (dac) that are usually found in more expensive products. This is why I was pointing out that Yamaha is the ONLY brand I have seen to offer the Burr Brown dacs in a mid-level receiver (RX-V659). As I mentioned in my previous post the RX-V650 was rated at 95 X 7 and seemed to have more real world power than the RX-V757 I upgraded to. However, I only owned the 757 for 3-4 months as that was 3-4 months too long if you ask me. I am more than happy with my Pioneer 1015. In terms of real world power, the 757 is not in the same league imho. Feature wise, the 757 does offer a bit more tweaking capablility but nothing overly significant. Hope this helps. Happy Hunting!!!!!

really? i have the 757. so if it isn't even in the same league... do you mean that an external amplifier would be better than the one in the 757?

PS: i'm not the one that started this thread, just in case you didn't know... but i kinda barged in cos i had some questions too.

 

[jcPanny]

Yamaha receivers

I have the HTR version of the Yamaha, the 5860 and have been happy with it. If you want more power than the RX-V659, than you should consider a refurbished RX-V2500 for <$500. The RX-V7xx is very similar in power and features to the 6xx. From what I can tell, the power rating and weight are the same for both models.

Any of these receivers will work great with reasonable efficient 8 ohm speakers.

 

[speakerman39]

really? i have the 757. so if it isn't even in the same league... do you mean that an external amplifier would be better than the one in the 757?

PS: i'm not the one that started this thread, just in case you didn't know... but i kinda barged in cos i had some questions too.

Well that depends on you. If you really like your movies/music real loud then chances are you may at least want to consider an outboard amplifier. If, on the other hand, you listen at more moderate volumes and plan to use efficient 8 ohm speakers then I believe you would have enough power to do so with the 757. It also depends on the size of your room--larger rooms generally need more power to fill the room with sound. What I meant by "not in the same league" is that the Pioneer 1015 is much more solid in terms of real world useable power than the 757 has. Heck the Yamaha RX-V650 seemed to have more real world power than the 757 and yet it was rated at 95 X 7 as opposed to the 100 X 7 for the 757. I would at least try to see how the 757 sounds first and then if it is not enough then by all means add an amp or 2. Good luck in your decision.

 

[bryantm3]

i still don't understand what you mean by "real world power".

i'm not really using efficiant speakers, they're RTi8s and they can take a lot of power.