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Horizontal bi-amp with different amps
Audio freaks,
First; pardon my ignorance in the field of high-end audio. I was hoping someone could provide some advice/information regarding a planned system. A few years ago I bought a pair of KEF Reference speakers (think the type is 3031(?), a couple of matching (passive) KEF subs (don't know what the type is), and an amp (Onkyo, can't remember the type for this, but I know it was about $1000-1500 at the time of purchase). Anyway, I've started to collect a few necessities in order to upgrade to a home theatre system; I've got hold of a REL Storm and a KEF Reference Model 90 Centre. I'm thinking about getting a Yamaha DSP-A2 Surround Sound Amplifier and a couple of KEF sourround speakers as well. I'm thinking about bi-amping (horizontal(?)) the KEF References (they are bi-wired) and use them as fronts, i.e. let the Onkyo feed the woofer and the Yamaha mid-range/tweeters. I've read throuhg a few discussions about bi-amping, and it seems like the amps must have synchronized "gain" in order to provide an optimized sound quality. I'm not sure what gain is, other than that the gain controls for my car amps adjusts the volume. None of the amps have a specific gain control (as far as I know). How do I go about synchronizing gain between the amps? Is it any point in doing the bi-amp'ing at all, or am I better off ditching the Onkyo amp? Also, the system is (still) going to be primarily used for music (about 80%), so I'm not sure wether to buy some "proper" speakers as rears as opposed to specialized surround speakers. Would a pair of e.g. KEF Coda or even Q-series be better, or will this be "too much"? I'm not planning to set the system up in a very large room (I'm about to start looking for a new property, so not sure about the specific size yet). Up till now I've been using wires you guys will categorize as lamp-cord. In my upgraded system I'm going to spend 10% of the value of the system on cables. Any recommendations? Any input would be much appreciated. Thanks, -- Thomas |
#2
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Horizontal bi-amp with different amps
"Thomas Muller" wrote in message
... Audio freaks, Up till now I've been using wires you guys will categorize as lamp-cord. In my upgraded system I'm going to spend 10% of the value of the system on cables. Any recommendations? I'll comment only on this question. the 10% number that's bruited about so often was originally a retrospective number, obtained by averaging the amount spent by high-enders on wires. It's been repeated so often that many people have the idea that they should take 10% of their expenditure and somehow find wires that cost that much. The correct approach to all expenditures is to spend as little as possible to get results you're happy with. And that goes for every component, not just wires. Norm Strong |
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Horizontal bi-amp with different amps
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Horizontal bi-amp with different amps
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Horizontal bi-amp with different amps
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#8
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Horizontal bi-amp with different amps
What does that mean that drivers are not resistors? And would biamping
be the same waste of time as biwiring in term of sharing the woofer duties? One last question. What exists inside a Dali Grand Coupe as a crossover that is being contradicted by biwiring and/or biamping? Thanks for helping a BA understand an EE. :) Kalman Rubinson wrote: On 16 May 2004 14:46:53 GMT, (dourmaj) wrote: Although a potentially entertaining project, there is little or no guarantee that your efforts will pay off with significantly better (or even noticeably different) sound. Since either option 'done properly' may greatly screw up the equipment, I came to the conclusion that the risks far outweighed the benefits. I ended up selling off the extras, investing in a really nice solid state amp, and satisfying the 'mod' bug by vastly upgrading an albeit already nice tube preamp - its a dead quite system and sounds great, and without the extra clutter. Agreed. Any off-th-shelf crossover, even an adjustable one, cannot replace any eq or voicing elements in the original. Drivers are not resistors. Kal |
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Horizontal bi-amp with different amps
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#10
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Horizontal bi-amp with different amps
Kalman Rubinson wrote:
No: It has to do with the fact that the crossover, active or passive, high level or line level, must be designed specifically for the drivers, the enclosure and the application. Kal Just at the moment I'm designing an active crossover usable for a single or double subwoofer. It is possible to compensate the lower resonance frequency and Q and the upper frequency limit of the sub and the lower frequency limit and Q of the satellites (by means of pluggable resistor arrays). The crossover can be configured with a zero degree (additional)phase-shift for the overall sound. The satellites and the sub should have closed enclosures. A unique feature(apart from the 0-phaseshift) is an adjustable lower pole frequency(20Hz...60Hz) and independent Q(0.5...1). The slopes are 12dB/oct. and symmetrical, but they overlap more. It comes in a small aluminum enclosure(2in 4out RCA receptacles) with a wall-wart power supply. If anyone is interested please drop me a mail. This is not a commercial project but a favor for a few audiophile friends. -- ciao Ban Bordighera, Italy |
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Horizontal bi-amp with different amps
On Mon, 17 May 2004 01:16:06 GMT, Philip Meech
wrote: What does that mean that drivers are not resistors? It means that top-quality speakers often have complex crossovers which compensate for frequency irregularities in the driver, and are much more than simple frequency dividers such as you find in 'off the shelf' active crossovers. And would biamping be the same waste of time as biwiring in term of sharing the woofer duties? No, active biamping does indeed increase the potential dynamic rannge if the system. Note that 'passive' biamping using the speaker crossover does absolutely nothing. One last question. What exists inside a Dali Grand Coupe as a crossover that is being contradicted by biwiring and/or biamping? You'd have to examine the response of the crossover *at the driver terminals* to discover whether it does more than simple frequency disvision. Biwiring is of course utterly pointless. -- Stewart Pinkerton | Music is Art - Audio is Engineering |
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Horizontal bi-amp with different amps
Yeah, sure, its "utterly pointless" that i heard a distinct improvement in
clarity with my Martin Logan Aerius i's bi-wired as opposed to using the cheesy supplied metal bridge that came with it. Well, why don't we let the consumer TRY it and decide? Afterall, its reversable. Stating that bi-wiring is "utterly pointless" is wrong. -Bob Bernstein. |
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