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In Reply to: RE: Two Scott 299s to one pair posted by jack3 on January 04, 2017 at 10:13:01
Your wording is kind of confusing especially when you mention "bi-amp."I think your talking about switching both 299's to mono input so that both channels receive the same input, then switching one 299 to play channel A and the other 299 to play channel B.
If that's the case your only using one channel of each 299 or about 17 watts for each speaker. No better than just using one 299 for a pair of speakers in terms of available output power.
To utilize the output of both channels in one 299 of around 34 watts, you'd have to bridge the speaker outputs of both channels and I'm not sure if that's so straight forward in a 299 or not.
Best to wait for a reply from someone that can answer that.If you really do mean "bi-amp" each speaker but without adding another component like a bi-amp xover, I guess you could do that with one 299 per channel or speaker but you'd have to split the speaker xovers in the right place to avoid burning out the midrange,tweeter or both since that setup will send low frequencies to both and you still need the speaker xovers. Now you'd have 2 sets of inputs per speaker.
You'd have control over the shelving of lows and highs in each speaker with the balance control, control over the bass to the woofer. control over the treble to the mid/highs with each 299 and you'd have the full output of each 299 per speaker but the other potential advantages of bi-amping won't be there.
Unconventional yet interesting idea if you have two of the same integrateds unless I'm overlooking something.
Edits: 01/04/17Follow Ups:
If you're going to bridge instead of parallel connect, you will need a phase splitter to feed each existing channel signals that are 180-degrees out of phase. A small transformer like the UTC A-18 does a fair job of this, and can run step up or step down.
They will tolerate signal level well below 20 cps at levels quite adequate for the application. Then you hook your 8R speaker between left and right 4R output taps, and ignore the ground.
cheers,
Douglas
Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
I was hoping to set the "stereo selector" to mono thinking I would receive full power. And if the input signal was only from one channel then I could accomplish full power output to each speaker.
Want to get full range signal to each speaker and not have to bi-amp.
Edits: 01/04/17
You are fighting TANSTAAFL and LOOSING.
How good are your soldering and associated skills? The objective can't be reached without some tweaking inside the units and the addition of some supporting stuff.
For starters, tell us which 299 (A B C D) is being dealt with. The correct OEM schematic is very important.
Eli D.
Well, adding a second amp isn't quite a FL. But if that's the case, I think I will abandon the idea.
Thought maybe I could feed two channel A signals into the amp and come out with both sides of power going to one speaker and accomplish with cables/connectors.
Guess two systems are not a bad thing after all.
jack
Dont abandon the idea if you have biwireable speakers. If you dont then yes internal surgery is required. Its not a simple modern SS amp.
ET
"If at first you don't succeed, keep on sucking till you do suck seed" - Curly Howard 1936
Edits: 01/04/17
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