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post #3421 of 3932 Old 02-02-2016, 09:31 AM
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Quote:
Originally Posted by AustinJerry View Post
We are talking about the delay between the subs, not between the subs and the mains. While I have never tried it, if the OP has an AVR with two independently-configurable sub outputs (like with Audyssey XT32), then augmenting the delays with the AVR might work. Place the two Submersives (assumed equidistant) on one channel, and near-field sub on the other channel. Connect each sub channel to a separate input on the 2x4. Use a plug-in that maintains separate input channels, and this might work.
Sorry, my mistake. The theory still holds though. He still might be able to play with the numbers on all the other speakers and subs to compensate. Or if it's that critical I guess he can daisy chain a second unit in there to add more delays.
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post #3422 of 3932 Old 02-02-2016, 09:34 AM
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Bummer, more stuff to take into consideration.
I am getting ready to install two Infinite Baffle manifolds in my living room, each of which will require different delays because they are different distances to the MLP.
These manifolds are not going to be able to be moved once installed.
Is the issue that there is a global delay that the 2x4 introduces when installed in the system?
And to fix, you have to play with the delays inside the 2x4, and possibly in the upstream AVR as well?
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post #3423 of 3932 Old 02-02-2016, 09:34 AM
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**double post**
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post #3424 of 3932 Old 02-02-2016, 10:23 AM
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Originally Posted by Mr. Electric Wiz View Post
Bummer, more stuff to take into consideration.
I am getting ready to install two Infinite Baffle manifolds in my living room, each of which will require different delays because they are different distances to the MLP.
These manifolds are not going to be able to be moved once installed.
Is the issue that there is a global delay that the 2x4 introduces when installed in the system?
And to fix, you have to play with the delays inside the 2x4, and possibly in the upstream AVR as well?
No. Each of four outputs has its own unique delay. So, you would measure the physical distance from each sub's speaker dust cap to the MLP (exactly where your ears will be). Pick the furthest sub distance. Subtract the distance of the closest sub. Divide the result (in inches) by 13,512 and multiply the result by 1,000 to get the delay in ms. Apply that delay to the closest speaker. Repeat for any other speakers.

Example" Sub1 @ 12'1", Sub2 @ 4'3.5". Diff=93.5". (93.5/13512)*1000=6.9ms

As long as the calculated delay is 7.5ms or smaller, you are good to go.
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post #3425 of 3932 Old 02-02-2016, 10:28 AM
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Jerry, have you ever had to reach out to MiniDSP support?
I sent them an email yesterday about my wiring question and they still haven't gotten back to me.
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post #3426 of 3932 Old 02-02-2016, 10:41 AM
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Quote:
Originally Posted by Mr. Electric Wiz View Post
Jerry, have you ever had to reach out to MiniDSP support?
I sent them an email yesterday about my wiring question and they still haven't gotten back to me.
Yes. They are typically very responsive. There is a time difference, though.
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post #3427 of 3932 Old 02-03-2016, 06:19 PM
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**double post again**

Last edited by Mr. Electric Wiz; 02-04-2016 at 05:53 AM.
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post #3428 of 3932 Old 02-03-2016, 06:19 PM
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MiniDSP

Well I decided to go ahead and wire up my RCA cables to the input side as follows:
Pin = "+" on MiniDSP
Ring = "-" on MiniDSP
Jumper "-" to "S" on MiniDSP
I've seen at least a couple of photos of them wired up this way, so hopefully it's correct.

Last edited by Mr. Electric Wiz; 02-03-2016 at 06:45 PM.
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post #3429 of 3932 Old 02-03-2016, 06:44 PM
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Quote:
Originally Posted by Mr. Electric Wiz View Post
Well I decided to go ahead and wire up my RCA cables as follows:
Pin = "+" on MiniDSP
Sleeve = "-" on MiniDSP
Jumper "-" to "S" on MiniDSP
I've seen at least a couple of photos of them wired up this way.
is that on the input or the output ?
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post #3430 of 3932 Old 02-03-2016, 06:45 PM
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Input. I should have specified.
I put XLR's on the outputs.
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post #3431 of 3932 Old 02-03-2016, 06:52 PM
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Quote:
Originally Posted by Mr. Electric Wiz View Post
Input. I should have specified.
I put XLR's on the outputs.
lol! Good Good !! Was going to say, doing that on the output well, not a good idea.. !
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post #3432 of 3932 Old 02-08-2016, 06:41 AM
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I finally hooked everything up including the IB manifolds yesterday to confirm that everything worked.
IT DID!!!
A multimeter hasn't been placed on the sub output of my Pioneer Elite SC-65 yet to measure output voltage yet, but I presume it will probably be less than 2 volts.
I'm sure the input jumpers will need to be set at the lower voltage (2V- what's listed on the board or 1.8V per the manual).
The output from the MiniDSP was kind of low, and in order to get the first lights to light up on the iNuke 3000 I had to crank the gain knobs (RCA input/XLR output).
Output of course was low because the front and rear waves were cancelling each other out.
Now I just need to install these manifolds!

One thing I'm not sure about is that I have two Sub outputs on my receiver but they are basically the same signal internally connected together (think Y adapter).
I could bring both signals into the MiniDSP connected to Input 1 and 2, or just connect input 1.
I don't think it will matter actually. I'll have to try both and see what changes (if anything).
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post #3433 of 3932 Old 02-08-2016, 06:47 AM
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Pics!
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post #3434 of 3932 Old 02-09-2016, 11:44 AM
 
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Cables are done....
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post #3435 of 3932 Old 02-28-2016, 05:02 PM
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Maybe I am just seeing this now, but it looks like MiniDSP is now offering phoenix to xlr connecting cables for their balanced units.

https://www.minidsp.com/products/min...p-balanced-2x4

Sony XBR75X940C
Martin Logan Spires
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post #3436 of 3932 Old 02-28-2016, 05:11 PM
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Quote:
Originally Posted by Mixdoctor View Post
Maybe I am just seeing this now, but it looks like MiniDSP is now offering phoenix to xlr connecting cables for their balanced units.

https://www.minidsp.com/products/min...p-balanced-2x4
Those are HORRIBLE for audio connections. Perfect for Power tho.
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post #3437 of 3932 Old 02-28-2016, 05:54 PM
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Originally Posted by dashpuppy View Post
Those are HORRIBLE for audio connections. Perfect for Power tho.

Why are they horrible for audio?

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post #3438 of 3932 Old 02-29-2016, 01:40 AM
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Originally Posted by dashpuppy View Post
Those are HORRIBLE for audio connections. Perfect for Power tho.
What is wrong with them that would render them "horrible"? Not trying to be rude, maybe you are correct, I just don't know?
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post #3439 of 3932 Old 02-29-2016, 01:47 AM
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I have two questions:

First, I know that the balanced MiniDsp 2x4 requires a Phoenix connection on the input side, so for that, I plan to use an RCA cable from my AVR and Phoenix on the MiniDsp input, but, I was under the impression that I could use a balanced XLR (or TRS) with an XLR connector on both ends from the MiniDsp's output to the input on my inuke. The options on the MiniDsp website say that a Phoenix to XLR is available to purchase for the output coming from the MiniDsp (Phoenix end) to the amp (XLR end). Does this mean that I can't use my balanced cables with XLR's on both ends on the output side of the MiniDsp?
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post #3440 of 3932 Old 02-29-2016, 05:45 AM
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Quote:
Originally Posted by Tip24/96 View Post
I have two questions:

First, I know that the balanced MiniDsp 2x4 requires a Phoenix connection on the input side, so for that, I plan to use an RCA cable from my AVR and Phoenix on the MiniDsp input, but, I was under the impression that I could use a balanced XLR (or TRS) with an XLR connector on both ends from the MiniDsp's output to the input on my inuke. The options on the MiniDsp website say that a Phoenix to XLR is available to purchase for the output coming from the MiniDsp (Phoenix end) to the amp (XLR end). Does this mean that I can't use my balanced cables with XLR's on both ends on the output side of the MiniDsp?
The 2x4 has only Phoenix connectors, on both the input and the output sides. To be honest, rather than purchasing Phoenix-to-XLR converters, I would simply snip the XLR connectors off one end of the cable and wire directly into the Phoenix. It is not that difficult, and there are a number of posts here on AVS that have step-by-step instructions on how to do it. Let me know if you need a link.

The converters mean that you will end up with a pair of bulky XLR connectors behind your gear. Cutting the cables avoids the extra bulky connectors and allows the cables to be cut to the exact required length. A very much cleaner installation. JMO.
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post #3441 of 3932 Old 02-29-2016, 07:24 AM
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It's much easier than I thought it was going to be.
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post #3442 of 3932 Old 03-03-2016, 01:33 PM
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I understand the cons of using adapters but I have run 50' xlr's in the ceiling where I am to get the amps out of the room.
I would really hate to cut these cables in case something happens. Has anyone found xlr to phoenix connectors that fit he balanced minidsp?
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post #3443 of 3932 Old 03-03-2016, 01:53 PM
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Originally Posted by kingpin111 View Post
I understand the cons of using adapters but I have run 50' xlr's in the ceiling where I am to get the amps out of the room.
I would really hate to cut these cables in case something happens. Has anyone found xlr to phoenix connectors that fit he balanced minidsp?
If you check the balanced 2x4 web page, you can accompany your order with XLR-to-Phoenix adapters as an option.
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post #3444 of 3932 Old 03-03-2016, 02:09 PM
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Originally Posted by AustinJerry View Post
If you check the balanced 2x4 web page, you can accompany your order with XLR-to-Phoenix adapters as an option.
Thank you I'll have to send them an email as I already have received my unit before they were offered.
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post #3445 of 3932 Old 03-03-2016, 02:41 PM
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I would never cut my 50ft XLR's running to my amps either. Why not just buy some 3 or 6ft XLR cables and cut them in half? That's what I did. This way you control the length and can avoid any strain at the phoenix blocks.
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post #3446 of 3932 Old 03-03-2016, 02:45 PM
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Originally Posted by dryeye View Post
I would never cut my 50ft XLR's running to my amps either. Why not just buy some 3 or 6ft XLR cables and cut them in half? That's what I did. This way you control the length and can avoid any strain at the phoenix blocks.
Obviously an option as well. However, both options involve a bulky XLR male/female mess in your equipment rack. I chose to cut XLR cables to avoid the bulky mess. If I had to have the mess, I probably would choose the adapters over the bare wire approach.

But either would work, of course.
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post #3447 of 3932 Old 03-04-2016, 01:48 AM
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If you use XLR cables, does cutting the end off and wiring up the Phoenix connection make it unbalanced, or would it still be considered balanced?
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post #3448 of 3932 Old 03-04-2016, 05:42 AM
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If you use XLR cables, does cutting the end off and wiring up the Phoenix connection make it unbalanced, or would it still be considered balanced?
I is still a balanced connection.
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post #3449 of 3932 Old 03-04-2016, 05:44 AM
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Cutting the ends off doesn't make it unbalanced. Using only two of the three wires would make it unbalanced. Phoenix connectors exist in both 2 and 3 pin (and many more) varieities.
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post #3450 of 3932 Old 03-04-2016, 08:15 AM
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Quote:
Originally Posted by rhodesj View Post
Cutting the ends off doesn't make it unbalanced. Using only two of the three wires would make it unbalanced. Phoenix connectors exist in both 2 and 3 pin (and many more) varieities.
Even using only the two signal lines, properly connected, would not make it unbalanced.

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