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the best amp to run the bass of infinity RS-1b's

I have a pair of infinity rs 1b's and am running them with a pair of bryston 4b-st's. I have a nakamichi dragon 3 piece cd setup with a nakamichi CA7A pre-amp to the brystons. I have 2 pairs of mit MH-750 CVTerminator II cables to the speakers. I am looking at a pair of Bryston 7b's at 500/ch at 8ohms, 800/ch at 4ohms. Classe Ca-400 400/ch at 8ohms, 800/ch at 4ohms. Mcintosh mc2500 500/ch at 8ohms. Perreaux 5150b at 500/ch 8ohms. I like rock,jazz country and classical. All the amps are for sale in my area and I am wondering which would give me the best punch and sound for the type of music i listen to.

Thanks for the help
Darin
darinkperih
sirspeedy70680e509
1,064 posts
 
I have an old friend,who is quite an experienced hobbyist,and,record collector.He runs his RS-1b's with Krell on bottom and CJ PREMIER 8's on top.Believe it or not,he is using PHOENIX GOLD speaker cabling throughout.This is really cheap stuff.I auditioned it in a friend's set-up consisting of Rowland driving Kharma's.It was unacceptable in that set-up.However in the Infinity set up it is like the laws of the universe don't apply.UNBELIEVEABLE sound!You may want to check the stuff out.I'm talking about cables that go for about ten dollars for an 8 ft. run.Good luck.
johnhaines
32 posts
 
I have two sets of RS-1b's and I want to use one amp to run 4 bass towers with one pair of high end panels..
Anyone know how to do this and what amp could run that type of low impedance load on the bottom?

For the record with my Older RS1'a (RS1a's) I used 2 bryston 4b's which were a bit bright. Also since they don't double wattage as impedance drops I think the Bryston 4b's run out of current.
ramy
141 posts
 
I have tried driving the low end,bass section of my speakers with a number of amps,most of them disappointed me.The worst were the Classe mono I think model was 350,(cannot remember)second worst were the Bryston 7 monos,third were the YBA Passion 1000 monos(excellent for mid and high frequencies,Acoustic Reality 1000 monos(ICE amps) were pretty good,but better were the Innersound 1KW amps monos, and THE best are the Electrocompanient NEMO monos.The bass speakers in my system have an impedance of 4ohms. The latter amps are currently in my system.
weseixas
519 posts
 
JM Labs Utopia in the Bedroom Ramy ...... You dah man !!!!

-)
johnhaines
32 posts
 
Ramy MANY THANKS! I was considering using newer Bryston 4b SST, and also Classe CA-400 or 350..thanks for eliminating the 7 monos,

I met Innersounds 1 man show and I believe him to be an honest fellow- one I would like to support with my purchase.

The Bryston 7b is a bridged design which can not be used with the Infinity Rs1b crossover though.. and looking inside the Electrocompanient Nemo mono

http://www.electrocompaniet.com/files/reviews/Electrocompaniet_Nemo.pdf

it looks also to be a bridged design (I see two identical chassis components and a bridge wire...... you can not us bridged amps with the bass section of the RS1b's because they will go into positive oscillation. (very loud painful and costly)

In your RS1'bs ..Did you use a different crossover arrangement? I am using the stock crossover. Or are you using different speakers? I checked your system page and did not see RS1'bs, but greatly appreciate your advice anyhow.
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