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Need help What monoblock power amps for bass?

I own a pair of Silverline Sinfonia speakers.These are very large speakers (over 240 lbs. each),96 dB and 8 ohm stable.Very aesy load for any amp,so power is not mandatory,anything over 50W/ch is OK..
They are tri-ampable.I am looking for opinions on what monoblock amps to use for bass drivers ONLY.Each Sinfonia has two 12" woofers and one 7" woofer.7" driver also contributes to midrange,so this is the trickiest part of my amplification story.I don't want mellow and soft bass,but don't want cold vocals either.
I plan to use either tube or SS monos and limit them whit a potentiometer in order to achieve a tonal balance with midrange and tweeter.Midrange and tweeter will be powered with 320B XLS SET monos (30W/ch).
The areas i am looking for in bass are - slam,speed,definition and ambience.I like fast and tight bass (often connected with SS amps),that is a priority.
Any suggestions will be very welcomed.
audiobb
mordante
511 posts
 
Bryston 7BSSt maybe, but if it were up to me I would 6 times the same mono blocks. Maybe you can limit them with a potentiometer but what about input impedance?
bikerduud
75 posts
 
Bryston 7BSST mono amp would work awesome. Plus, 20 year warranty.
tweak1
3,535 posts
 
Check out Wyred4Sound SX1000s. I am using SX500s on my mggie mid/bass panels. They ae outstanding and energy efficient. Underwood HiFi sells them. They also make 4 channel amps, power configured to your needs
shadorne's avatar
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shadorne
7,467 posts
 
I like fast and tight bass (often connected with SS amps),that is a priority.

This will be largely determined by the speaker. I am not familiar with your speaker but it depends how they are designed. Q=0.71 is critically damped and will sound "tight" in the bass. Anything above a Q of 1 starts to sound pretty muddy.

Bass is two things - loudness and length of notes. A powerful bass can be achieved through longer notes and less decay (underdamped) a lean or tighter bass will be created with criticial or overdamping. In our modern world of impressive bass, often some bass tightness has been traded off to achieve deep satisfying bass extension - but you will hear the effect on a well recorded acoustic kick drum (such as Sheffield Labs Track 1 of their drum track album).

SS will certainly be tighter than an amp with a high output impedance but a lot will still depend on the speaker design.
audiobb OP
103 posts
 
Hi Shadorne,
I agree with you.Unfortunatelly,i have no acess to data on Q factor of my speaker.I enjoyed reading your post on other thread.
Underdog,
I thought about the idea of the 6 same monos.I was talked out of it.Plus i heard for myself in my system that different amps work pretty good.I think there is a lot of potential in that idea.Only combining amps needs to be careful.
Treble and mid driver will be amped by a tube amp that will be built specifically for Sinfonia.That way i can combine different things.
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