sda-srs crossover mod
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Alasichuk
Posts: 22
Hi.
For reasons I won't go into, I now want to defeat the "Dimensional Array" portion of these speakers & have that bank behave exactly the same as the stereo array portion.
To that end, and looking at the circuit diagram of the crosso
1) I will not connect the internet cable.
2) I will jump the Neg input of the stereo array to "other side" of the 2 parallel caps connected from the B interconnect port.
My question is about the coil that is between the Neg terminals of the speakers and the Chassis ground on the Dim Array side. There is not one in the stereo array side.
what does this coil do and should I jumper over it tho make the Dim Array sir the same as the Stereo Array side?
For reasons I won't go into, I now want to defeat the "Dimensional Array" portion of these speakers & have that bank behave exactly the same as the stereo array portion.
To that end, and looking at the circuit diagram of the crosso
1) I will not connect the internet cable.
2) I will jump the Neg input of the stereo array to "other side" of the 2 parallel caps connected from the B interconnect port.
My question is about the coil that is between the Neg terminals of the speakers and the Chassis ground on the Dim Array side. There is not one in the stereo array side.
what does this coil do and should I jumper over it tho make the Dim Array sir the same as the Stereo Array side?
Answers
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Pls don't be glib. I'm not asking for alternatives.
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We have to know the why with extreme details before we can answer- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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We're also going to need your tax returns from the last 5 years and your mother's maiden name.
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You would have to redesign most of the speaker to do this and have it function properly.
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Just sell them and buy some QSC powered pro audio speakers.
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What is it with you people. STOP giving me alternatives like this
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Original SRS-SDA with Blade/blade interconnect
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Like I said in the beginning, I just want to make each speaker deal with its own channel. No interconnect.
It's not up for discussion. I just want to see if I've approached this task correctly. Not whether or not to do it. -
Look at the XO diagram & tell me where I'm wrong
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Completely wrong, very bad idea. You will have lobing issues like no other, which means they will sound like a$$.
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Have you considered different speakers- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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what's lobing?
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Lobing would only be the start. If you don't know what that is, then you should understand why people are telling you what they are.
Simply put, you will be butchering this pair of speakers.
These folks are not trying to be mean, just inform you of the truth. Unfortunately for you, the truth isn't up for debate either. It is what it is.
Tom~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~ -
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I'm just trying to make the Dim Array be like the stereo array
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What are you trying to accomplish? The speakers sound great The way they were designed, buy a better amp and you will see.
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If you want to run them as a conventional stereo pair, don't connect the Interconnect Cable. The Stereo Woofers will still produce their respective channel's signal, and the Dimensional Woofers, through their sub-bass drive circuit, will produce the same stereo signal below 150 Hz. This should minimize any lobing or interference from the adjacent woofers since they're not producing any sound above 150 Hz.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
OK new plan:
1) I will not connect the internet cable.
2) I will take the Dim Array 2 parallel caps & the coil to ground (both on the Neg side) out of the circuit.
3) I will jump the Neg input of the stereo array to "other side" of the 2 parallel caps connected from the B interconnect port.
4) I will jump the connections where the coil was.
This then will take make the dim array be connected up 100% identically as the Stereo Array -
What did you just do to the speaker impedance?OK new plan:
1) I will not connect the internet cable.
2) I will take the Dim Array 2 parallel caps & the coil to ground (both on the Neg side) out of the circuit.
3) I will jump the Neg input of the stereo array to "other side" of the 2 parallel caps connected from the B interconnect port.
4) I will jump the connections where the coil was.
This then will take make the dim array be connected up 100% identically as the Stereo Array
What did the impedance change, change in the crossover frequencies?
Pull the interconnect cable. Done. Don't do anything else.
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I see this sort of thing all of the time at work dealing with customers. They come in and ask questions and they have a set answer in their heads (*Meaning they ONLY want to hear whatever it is that they want to hear*) Of course since the people they are asking are not mind readers, they have no idea this person has that set answer in their heads. If you do not give them the set answer that they want to hear, they resist. You could tell them they sky is blue or that god is good and if that is not what they want to hear they will debate/argue with you. The fact that you are giving them facts/the truth is completely irrelevant. THEY ONLY WANT TO HEAR WHATEVER IT IS THAT THEY WANT TO HEAR AND ANYTHING ELSE AS FAR AS THEY ARE CONCERNED IS A WASTE OF BREATH/TIME. You could tell them they are about to drive off of a cliff with whatever it is that they are suggesting, but because that is not what they want to hear then what you are saying will be ignored.
Then when they DO end up at the bottom of that cliff, they will blame YOU for not telling them what they wanted to hear/read.
Whilst I may not always agree with some of the people on here, I HAVE been here on and off for a very long time and have come to understand that a lot of the people on here know that they are talking about.
The following may be a very crude analogy, but it hits the nail on the head here.
How many people does it take to tell you that your breath stinks before you go and brush your teeth/use some mouthwash????? -
Can you make a statement about that gives me some information that I can use?
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I would like to thank you sir for proving my point that I made above for me. I would wish you the best of luck, but CLEARLY that ain't whatcha wanna read, so.........................I will leave you with this old saying that you will also ignore. A hard head makes for a soft behind.
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I think you want to believe that designing crossovers so that all the factors like phase, impedance, frequency response/voicing come together in a good way is easy but that's just because you don't know what you don't know.George / NJ
Polk 7B main speakers, std. mods+ (1979, orig owner)
Martin Logan Dynamo sub w/6ft 14awg Power Cord
Onkyo A-8017 integrated
Logitech Squeezebox Touch Streamer w/EDO applet
iFi nano iDSD DAC
iPurifier3
iDefender w/ iPower PS
Custom Steve Wilson 1m UPOCC Interconnect
iFi Mercury 0.5m OFHC continuous cast copper USB cable
Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
Custom Vibration Isolation Speaker Stands and Sub Platform -
The ONLY thing I've heard is "don't do it"
Not one reference to the schematic or anything helpful.
Lots of derogatory.
No help on how to make each speaker have 8 instead of 4 speakers (excluding tweeters) for its particular side.
Certainly, one of you must have enough on the ball to help me accomplish this? -
I am serious about doing this, so stupid is my option.
However, instead of clling me names, no one is addressing the issue I am facing.
Can't say much positive for the quality of the replies -
The ONLY thing I've heard is "don't do it"
Not one reference to the schematic or anything helpful.
Lots of derogatory.
No help on how to make each speaker have 8 instead of 4 speakers (excluding tweeters) for its particular side.
Certainly, one of you must have enough on the ball to help me accomplish this?
Had it even occurred to you sir that SOME of the people who have responded are experienced in DESIGNING loudspeakers or crossovers???? (*and I know this, because I have purchased product from them. Again been here a very long time and you have not*)
Again you have a set answer in your head and nothing else will suffice.
Go ahead and drive off of that cliff and then blame everyone else.
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Other tan "don't do it", no one has said anything
