choose a good amp

[fos7721]

hi,Im a beginner live in Taiwan,want to ask bro's adive
my preamp is onkyo rda7.1 and my speaker is usher 8871
l feel its not good in song but in theatre is good
l think l want to use biamp to run my speaker(rda7 to high & mediumfrequency and another to low)
can bro help me to recommend a amp???
besides,although l feel rda7 is powerful ,but are there others good powerful amp can bro recommend??(ati ??sherbourn??)
my English is bad but I think there are more information to know,hope bro can understand what l say ^^

 

[PENG]

hi,Im a beginner live in Taiwan,want to ask bro's adive
my preamp is onkyo rda7.1 and my speaker is usher 8871
l feel its not good in song but in theatre is good
l think l want to use biamp to run my speaker(rda7 to high & mediumfrequency and another to low)
can bro help me to recommend a amp???
besides,although l feel rda7 is powerful ,but are there others good powerful amp can bro recommend??(ati ??sherbourn??)
my English is bad but I think there are more information to know,hope bro can understand what l say ^^

I think you may be better off spending the money on a high end subwoofer such as one of those JL Audio, or one of those highly recommended by others on this forum such as the Funk audio ones (I have no heard them). If you must try biamping (most around here don't believe it will make a difference), I would just go with a 2 two channel amp for your left and right. Being in Taiwan, I suggest you go with the Halo A21, or A31 if you feel the need. In that case, let the Halo drive the mid and high because that way you may just hear better/sweeter sound quality if you have those "golder ears". The other option is to get a Emotiva XPA2 or 3 to drive the lows and let the Onkyo take care of the mids/highs. What model is your center speaker.

 

[ImcLoud]

the rda amp is 150 w pr channel, I don't think biamping is going to make a huge difference.. If you ned more power, I hate to say most amps are 200w per channel, and the extra 50 at that point isnt going to be huge, Im not familiar with your speakers, but emotiva makes a 400w x 5 and then you can add their 600w x2 and forget the biamping.. but its not cheap...

 

[RichB]

I agree with Peng.
I believe these are your speakers:

Usher Audio > Dancer Series Loudspeaker > CP-8871 Diamond DMD

If so, they are nominal 4 ohms which means they can dip into the 3's and then there is the phase angle.
It is reasonable to assume, that they like current.

I have the Halo A51 and think it is a fantastic amplifier very clean, dynamic, and sweet.
IMHO, the advantage of bi-amping is to isolate the channels since the bass drivers which consume the most power do not interfere with the mid/highs.
So, if you are clipping the bass, the high-frequency drivers are likely to be unaffected.

The A21/A31 will sound great and have plenty of power for even loud levels (100DB or less).
Emotiva mono-blocks XPA or XPR should also remove the need for bi-amping. But i have never heard them.

- Rich

 

[AcuDefTechGuy]

I agree with PENG.

Get some subs. Free up your speakers from 80Hz down. Subs will help balance the overall sound.

Don't worry about the amp or bi-amp.

Believe it.

 

[RichB]

I agree with PENG.

Get some subs. Free up your speakers from 80Hz down. Subs will help balance the overall sound.

Don't worry about the amp or bi-amp.

Believe it.

According the the specs, the Ushers ($15K) go down to 25hz.

I would never cross my Salons at 80hz.
Do you cross your Salon2's at 80hz?

- Rich

 

[AcuDefTechGuy]

According the the specs, the Ushers ($15K) go down to 25hz.

I would never cross my Salons at 80hz.
Do you cross your Salon2's at 80hz?

- Rich

Yes. I've tried 40Hz, 60Hz, 80Hz, 100Hz, 120Hz.

I really can't tell which one is the best. To me, the difference isn't like day and night drastic. So I just went with 80Hz.

 

[ImcLoud]

I cross bookshelfs at 80 towers at 50-60 depending how much power I have and they need.. a sub makes the lows much cleaner than the 6"ish drivers most speakers come with..

 

[fos7721]

thanks,bro,I know emotiva ,its a universal amp in Taiwan,but I haven't hered halo in Taiwan(maybe there is no company reprensent it )
my center speaker is usher be 616 dmd and my subwoofer are mk mx5000mk1 and velodyne dd12+

 

[PENG]

thanks,bro,I know emotiva ,its a universal amp in Taiwan,but I haven't hered halo in Taiwan(maybe there is no company reprensent it )
my center speaker is usher be 616 dmd and my subwoofer are mk mx5000mk1 and velodyne dd12+

I thought the Parasound Halo amplifiers are designed in US and made in Taiwan.

 

[RichB]

I thought the Parasound Halo amplifiers are designed in US and made in Taiwan.

That is correct.

- Rich

 

[PENG]

That is correct.

- Rich

Then he should go knock on the door of the manufacturing facility with cash on hand to make a deal.

 

[fos7721]

I agree with Peng.
I believe these are your speakers:

Usher Audio > Dancer Series Loudspeaker > CP-8871 Diamond DMD

If so, they are nominal 4 ohms which means they can dip into the 3's and then there is the phase angle.
It is reasonable to assume, that they like current.

I have the Halo A51 and think it is a fantastic amplifier very clean, dynamic, and sweet.
IMHO, the advantage of bi-amping is to isolate the channels since the bass drivers which consume the most power do not interfere with the mid/highs.
So, if you are clipping the bass, the high-frequency drivers are likely to be unaffected.

The A21/A31 will sound great and have plenty of power for even loud levels (100DB or less).
Emotiva mono-blocks XPA or XPR should also remove the need for bi-amping. But i have never heard them.

- Rich

ya thats my speaker , lm finding halo and l want to listen ,
how much money ??its hard to listen in Taiwan ><

 

[fos7721]

I agree with PENG.

Get some subs. Free up your speakers from 80Hz down. Subs will help balance the overall sound.

Don't worry about the amp or bi-amp.

Believe it.

thanks bro,l have subwoofers ,even two of it(mk mx5000mk1&velodyne dd12+),l think its ok to watch movie(especial mediumfrequency is powerful)
but in music is not good enough(high frequency),thanks ^^

 

[fos7721]

According the the specs, the Ushers ($15K) go down to 25hz.

I would never cross my Salons at 80hz.
Do you cross your Salon2's at 80hz?

- Rich

l put Salons at 80hz ,thanks
l think l make every bro misunderstanding ,the thing I want to express is
1.rda7 is a powerful amp to cinama system because it make good sound in hit and good environment sound(I cant find a good adjective in yahoo dictionary,l mean the good connect with surround speak )but its not good enough in listenning music(stringed music,l ever listened good sound by pass x600 amp run 8871 dmd......but its not my level...........)so,l think maybe l use biamp to separate high(mediunm)frequency and low frequency and use different amp style to do their job
2.Are there any other good multi amp(like rda7 has good hit power) can bro recommend ??? ati ,sherbourn (how about ati2007 and Sherbourn7/2100a??)or any others,thank(pls give me type number)

 

[fos7721]

I thought the Parasound Halo amplifiers are designed in US and made in Taiwan.

oh,l know Parasound ,so Halo is parasound amp ,thanks. I'm going to find it to listen^^

 

[PENG]

oh,l know Parasound ,so Halo is parasound amp ,thanks. I'm going to find it to listen^^

Yes, Halo is Parasound's top of the line series. The JC1 is the flagship power amp, the A21,31,51 are the more affordable ones but still highly regardes as smooth and sweet sounding. I suggested this brand initially because you said you were in Taiwan so I thought you may be able to get decent price thinking for something that is made locally. Now that you mentioned "strings", the Halo amps being known for their smoothness, should be a great choice for you. I am planning on getting one shortly myself, any day now. If you want multichannel, talk to Rich about the A51 (5 channels), he will tell you how happy he is with it. The A51 will provide your speakers with 400W of clean power. In that case you can sell the RDA. If you need two more channel, you can just pick up a low cost two channel Onkyo or something else for the rear channels.

Objectively though, most good quality amps shouldn't sound all that different, so that's why I also mentioned the option of a better sub. You may be amaze how much a high end sub can do for you, yes even for two channel critical music listening. I do believe most speakers would sound better if relieved the duty of producing much below 80 Hz regardless. However, some people, you are probably one of those, really believe in how a good amp can make significant improvements and in that case you can't beat the Halo at their price point.

 

[RichB]

I am very happy with the A51 driving my Salons.
The sound is clear, clean, and dynamic.

I recommend sending an email to sales@parasound.com.
Very often, you get a response for Richard Schram (CEO).

- Rich

 

[AcuDefTechGuy]

thanks bro,l have subwoofers ,even two of it(mk mx5000mk1&velodyne dd12+),l think its ok to watch movie(especial mediumfrequency is powerful)
but in music is not good enough(high frequency),thanks ^^

Do you have Audyssey Dynamic EQ?

 

[English210]

I am very happy with the A51 driving my Salons.
The sound is clear, clean, and dynamic.

I recommend sending an email to sales@parasound.com.
Very often, you get a response for Richard Schram (CEO).

- Rich

Agreed, I did. I was surprised and impressed by that.