female needs expert advice


bough a new pair of mirage om 5 loud speakers.Iam biamping them with 2 classe 70 power amps. these speakers have 2 250wattamps built into them for the bass.I have 2 pairs of tara labs speakers cables about 8 years old tara quatums reference.what do you think would cable for them. I want something that is fast being in boogie factor @transparent don,t we all.One more question ,Iwas horizontally biamping these untill iwas talking to the maker of these speaker who told me to vertically biamp.To do this he said to take the two + and two- speaker spads of the rt speaker and put them on the rt channel of one amp and use the rt channel of amp input to rt channel of preamp do the same with left speaker and other amp . i feel that using one channel of eash amp is a waste any other ideas is welcome I don,t want to buy new amps these to me sound good but i just hate the waste the reason for doing it this way the top two things on speaker are for the mids and highs the other 2 are just to send a signal to the built in power amps fun hey? so help me guys thanks.
tarbishaw
My experience with the Classe' 70's ( in specific ) are that they are bright and lean sounding. With that in mind, i think that the Tara's would be a relatively good match. If you want something that sounds very fast and clear, try some Nordost. It does not have the mid-bass warmth that the Tara offers. It would therefore lack "prat" in some systems, but it is extremely quick without being "edgy" or "sibilant" sounding.

As to using one channel of each amp without bridging, that is a "bunk" suggestion. Even if it came from the speaker manufacturer himself. Maybe if you had a little "weasel" of an amp with no power supply, but you don't. This was a common trick with the old Quad 405's. It became so common, that Quad even started making the amps with only one channel in the same chassis, but kept the power supply section that was designed for both channels in them. This was their idea of a "monoblock" and it did work much better.

Since the Classe' amps have got good sized supplies in them, i would not worry about that. This is evidenced by their sizable increase in power output as impedance is lowered and their reserve i.e. dynamic headroom rating. Besides that, you are only using them for the mids and treble, where power and current are not as big of a factor. That is, in comparison to if you were trying to power large woofers with a powerful motor structure.

As to Jeff's comments about bridging the amp ( tying the two channels into one bigger channel), voltage is increased and the current remains the same that you would have for one channel. Not only do some amps sound worse when bridged ( primarily due to the use of unmatched driver and output devices from channel to channel ), the bass can get soggier if running full range. If the amplifer actually improves in performance and sonics when bridged, that tells me that the amp was not designed properly to begin with. My guess is that the rail voltages that feed the output devices are too low and the circuit is more comfortable with the higher voltages that bridging produces. Like anything else, output semiconductors and circuits have "sweet spots" where they run best at. Part of building and designing an amp from scratch should take that variable into consideration.

While horizontal bi-amping does have its benefits ( especially if running full range ), i would suggest going vertical in your case. This will isolate the stereo signals and confine each channel to one amp each. This should minimize crosstalk and possibly improve your stereo imaging. If you were running the amps full range i.e. driving the woofers with one channel and mids / highs with the other, i would suggest horizontal.

Keep in mind that there are a LOT of different opinions and variables that apply to every situation. The best way to find out is to experiment for yourself and see what you like best. That way you'll know, see and hear the differences first hand and can chime in with your "experience" and "opinion" as the opportunities arise. Sean
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About swapping out your Classes for a 4BST - particularly if you have to buy "blind", without auditioning the amp in your system. Generally speaking, Classes have a reputation for being a tad "warm" while Brytons, generally speaking, have more of a straightforward approach that some would classify as being on the lean side.

There are cable dealers who will allow you to try out cables in your system with a liberal return policy, which is certainly easier than swapping out your amp(s).

Before going too much farther:

What is it that you are trying to achieve? What type of sound are you looking for?

What is it that you do not like about your present system?

How tied are you to your present speakers? It may be easier to change the sound by changing the speakers than trying to change the sound of the speakers by changing the electronics or the cables behind them.

Please let us know the answer to these questions, and we can better help you.

In the meantime, enjoy. . .

Barton
Where are you located?

I can direct you to www.tnt-audio.com their DIY section for ideas.

Your thread sounds to me more like the heading of a personal ad...just wondering. You could be Sedond cranking a joke for all it matters!
What's up with the "helpless female" angle of this question? I realize that women are a rarity in this hobby, but I don't see the relevance of calling attention to one's sex when asking the forum for advice. Having said that, I admit that I probably wouldn't have clicked on this at all if it had simply read "Need expert advice". (Then again, the same ploy could work with any catchy title - imagine seeing "Hermaphrodite needs expert advice"!) As for my views as the ex-owner of a Classe Seventy, see my post in the amplifier archives under the heading "Classe - great amps or highly flawed?"
Zaikesman;----I'm with you.We can slam you without knowing your sex. Here,it's not pertinent.

I loved that commercial where the two 3 year olds, of each sex are talking.--The little girl asks; "Am I the opposite sex?"

I belong to hermaphrodites anonymous.