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rhythmsandy 8th September 2012 07:47 PM

what factors will give iron fist bass?
I have auditioned many amps including Bryston, Pass, Krell, Plinius etc etc... but I found few amplifiers has really good iron fist bass in the sense>>
the bass is so tight and never stints even at the worst hit. Its very authoritative and not rounded just straight hit like a bullet. I am a bit confused where this actually comes from or what factors are very essential that makes this kind of sound.

I am thinking of using these modules..
for 200 RMS into 8 ohms Im planning to use 800VA of psu supply and nichicon capacitors of 30,000uf per rail. Total of 60,000uf per rail.

I would like to know is it possible with the above psu and module is it possible to get such bass? If not what are the other things that I need to consider to get it..

Coconuts 500 8th September 2012 08:54 PM

Have you considered getting different speakers?

sbrads 8th September 2012 09:02 PM

You could have the most perfect amp in the world and not get what you're seeking. It's absolutely everything in the reproduction chain that has to be good enough to not destroy the illusion. A lot of it is luck, because you could reject one component (source, amp, speakers & stands, leads, room etc.) thinking it's bad when, at the time of that test, another component is either below par or doesn't work well with certain other components. I include the room, component positioning, seating position, mains supply, and all the usual equipment variables. I would say the amp circuitry is about 40% max (don't quote me) of the whole issue of bass performance. A good amp can do what you want while delivering only a few watts which makes you think - why do we need so much wattage?

I think the answer is that your amp choice stands as good a chance as any of achieving bass nirvana.

a.wayne 8th September 2012 09:28 PM

Tight fisted bass , PSU size and direct couple .....

rhythmsandy 8th September 2012 09:47 PM

PSU size? how much size for the above module?
how to do the direct coupling for the above module? I would like to mod it if necessary...
This is the documentation and what has to be changed in it?

The module is claims 170watts into 8 ohms which I will be pretty happy now lets consider the PSU...

170x2 roughly 350VA for class AB .. i would like to add more headroom 625VA... I am ready to add more but uncrompromised bass tightness..

more output voltage required from the psu?

what is direct coupling can you tell me what that is?

cbdb 8th September 2012 10:39 PM

Get better speakers

pinkmouse 8th September 2012 10:40 PM


jcx 8th September 2012 11:49 PM

in room measurements, room treatment, more subs, multiple locations, EQed...

amps are way tertiary components in "tuning" a system's sound - it is all about the room, the loudspeakers

I wouldn't consider amp design choices in the running at all compared to loudspeakers, eq as long as they don't clip, run out of current

wg_ski 9th September 2012 12:23 AM

With an "iron fisted" power supply, an amp can still hit hard in the bass when driven 6dB into clip. Using that old school-equipment you could be clipping almost constantly and not even realize it. With just barely enough to make the power numbers, you know it instantly when it runs out of gas.

Subjectively, the old 1970's PV CS800 will trash an RMX2450 driving subs. It takes a 4050 to keep up - and they're $1500 and weigh almost as much.

fas42 9th September 2012 01:35 AM

As bizarre as it will sound to many people, get the treble right. That iron fist quality is due to minimal distortion in the treble spectrum; it's the very high harmonics that create that subjective impression of tight bass. If you don't believe me, disconnect the treble driver of a system that gets it right, and listen to the bass impact then fall to pieces ...


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