Yamaha mx-630 amp

[vtomike]

I picked up this amp today and it sounds good. I was wondering if it stable at low impedance loads? I can't find much info on it. I will post pictures in the morning. I did read it will put out about 190 w into 4 ohm's.

 

[vtomike]

Another ? Would it be possible to run the highs on my Infinity rs 4.5's. I would run my Acurus A250 on the woofers.

 

[MOPAR3]

Yamaha has a site with lots of manuals maybe you can find some specs there. http://www.yamaha.co.jp/manual/english/index.php

 

[vtomike]

Thanks! I did notice that the dynamic power at 2ohm's is 480W. I do not want to damage my emims or emits. Anybody else use this amp on Infinity's?

 

[MOPAR3]

That amp should be just fine as long as you keep the volume reasonable. If it sounds strained or distorted you need to turn it down. You should have plenty of headroom biamped. I run an m65 for highs and two nad 2600A's for bass on my ADS it's fantastic.

 

[Yamahalic]

You have one of the cool Titanium series (I love those). I have an old full-line brochure that lists as follows for the MX-630...

- 135wpc (8ohms, 0.003% THD)
- Dynamic Power: 220/265/360/480/500 (8/6/4/2/1 ohms)
- S/N: 123db (shorted), 119db (5.1k ohms)

More:
- It had a big brother (MX-830)
- Interesting other amps in the line (YST-A5 & MX-M70)
- Matching PreAmp (CX-630)

 

[Yamahalic]

I picked up this amp today and it sounds good. I was wondering if it stable at low impedance loads? I can't find much info on it. I will post pictures in the morning. I did read it will put out about 190 w into 4 ohm's.

Oh yeah, I almost forgot, it is probably stable at low impedance loads. The reason I think this is because Yamaha provided a Dynamic Power spec down to a 1 ohm rating. I don't see that very often.

 

[Yamahalic]

Thanks! I did notice that the dynamic power at 2ohm's is 480W. I do not want to damage my emims or emits. Anybody else use this amp on Infinity's?

One more thing...I am currently using a similar era Integrated Amp (DSP-A700) to power my Infinity SM-122 mains. The unit only has 60wpc (8 ohms), but it still rocks (these Infinity's are very efficient though). Your amp is more powerful, but then again certain Infinity's a far less efficient.

 

[VintInfinity]

Should be plenty for the high pass. I don't use that one, but the Yamaha I have kicks ass and takes names. Vintage Yamaha is good stuff.

I've used far less on my Kappas and they are fine. It's more the woofers that are the impedance problem. The Emits and Emims are no slouches, but the woofers are what really want the juice.

 

[whoaru99]

It would be better if you had a similar rated power amp for the highs as you do the lows.

With a smaller amp on the highs they will tend to clip first if you're prone to cranking it up.

 

[legal eagle]

I have the 630's bigger brother the 830 (as well as its cousin, the YST-A5) - and I don't think you should worry.the 630 has gain control, so as long as you match the gain on the highs not to exceed the gain to the lows, you should be more than OK.

I only hooked my 830 yesterday, and I am still learning its character - would love to hear your impressions of the 630.

 

[whoaru99]

Well...yes.

It will be fine with the gains matched, but the limit of the system is still the least powerful amp...that's my only point.

 

[jbbouwkamp]

You shouldn't have any problem with the amp at 4ohm loads. It's suppose to be stable to 2ohm. I have the same MX-630 and use it with a Denon AVR-2805 as the preamp/processor and amplification for the other 3 channels. My main speakers are Paradigm Studio 80s. Granted they are quite efficient (around 91db@1w), however, I've never been able to get the amplifier to clip...my ears have always given way first. I've also used the amp on some Linn Isobariks, less efficient and dip down to 4 ohm with no problem. Soundwise, compared to the amplifier section from the Denon receiver, bass is similar, mids are more focused, and the biggest difference is everthing is less grainy sounding which also has the effect of deepening the sound stage. I just picked up a McIntosh MA6100 70w integrated amp the other day. In comparison, the McIntosh has better note definition, there's even more of a sense of space/depth, and even though the power is less the dynamics are a bit better. Bass is also a smidge better on the McIntosh. Altogether though the Yamaha is really still a very nice sounding piece and definately upgraded the sound from the Denon receiver. Hope this helps!

 

[ATLjeffro]

That amp should be just fine as long as you keep the volume reasonable. If it sounds strained or distorted you need to turn it down. You should have plenty of headroom biamped. I run an m65 for highs and two nad 2600A's for bass on my ADS it's fantastic.

Mr. Mopar, can you send me a link where I can learn how to set up one of my systems in a bi-amped fashion like you mention here? I have a lot of great gear w/manuals and have read about bi-amping. I just want to be sure I don’t make a serious mistake. Thanks,jeff
jeffegg66@hotmail.com

 

[avionic]

Mr. Mopar, can you send me a link where I can learn how to set up one of my systems in a bi-amped fashion like you mention here? I have a lot of great gear w/manuals and have read about bi-amping. I just want to be sure I don’t make a serious mistake. Thanks,jeff
jeffegg66@hotmail.com

Welcome aboard .. Mr Mopar hasn't been active on AK since 2015