S3900 S4700 dbx DriveRack 260

S3900 BiWired

Courtesy of Greg Timbers.

S4700 BiWired

Courtesy of Greg Timbers.

Hallo!

Looks nice:applaud:

Is it measurerd in a anechoic chamber or in a ordinary room?

Why the strange freq response above 10kHz in both speakers?

dbx260 is a nice DSP:)

Lovely! Waiting for the K2s9900 numbers :)

I appreciate the time you guys put in to this "DSP conversion project". Its a rather easy thing to try out when provided with these eq figures. Kudos!

/Mostly

@4313B,

When you say(or G.T) biwired, how is it connected? Is there only one amp and bi-wire cable for left and right speaker or two amps for left and right speakers and separate cables from left and right out from respectively amp?

If one amp is used how does the crossover work? To me this is impossible!

Could you clarify?

BTW, the dbx 260 is a great unit. If I could I would get my hands on a dbx4800, period:D

http://manuals.harman.com/JBL/HOM/Te...S3900%20ts.pdf

http://manuals.harman.com/JBL/HOM/Te...S4700%20ts.pdf

Quote:

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Originally Posted by 4313B

http://manuals.harman.com/JBL/HOM/Te...t/S3900 ts.pdfhttp://manuals.harman.com/JBL/HOM/Te...t/S4700 ts.pdf

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:confused:, yes there is two binding post, or what do you mean?

EDIT! I get it now:p The crossover points is not used on the dbx, only the parametric filters, right;)

:thmbsup:

Quote:

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Originally Posted by Mctwins

Why the strange freq response above 10kHz in both speakers?

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UHF unhooked. The focus was on the LF and HF.


As one can see, this data is hot off the press. :)

As for the DD65000 and DD67000, they aren't finished yet.

Will he do it for 4365 as well? Please please pleeeeaase!
I am really tempted to go active.

Quote:

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Originally Posted by bubbleboy76

Will he do it for 4365 as well? Please please pleeeeaase!
I am really tempted to go active.

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But I think the 4365 has already been superceded with the Nd stuff.

I have 1501Fe's and would love to see the possibilities.

Ron

Quote:

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Originally Posted by Bobecca

:confused:, yes there is two binding post, or what do you mean?

EDIT! I get it now:p The crossover points is not used on the dbx, only the parametric filters, right;)

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I have to correct myself here. I really dont understand how it is implemented in dbx260 or how the connection is done. What does the INPUT stands for, is it prePEQ or postPEQ?? I asume it is the prePEQ that is used here.

In the dbx260 it is not possible to have more than seven prePEQ(first and last is only shelving type of filter) and four postPEQ(on each output).

How is it possible to have 10 parametric settings on that provided chart(S4700)?

It can not be biwired in this config. It has to be two amps involved!

Am I missing something???????

Quote:

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Originally Posted by Bobecca

I have to correct myself here. I really dont understand how it is implemented in dbx260 or how the connection is done. What does the INPUT stands for, is it prePEQ or postPEQ?? I asume it is the prePEQ that is used here.

In the dbx260 it is not possible to have more than seven prePEQ(first and last is only shelving type of filter) and four postPEQ(on each output).

How is it possible to have 10 parametric settings on that provided chart(S4700)?

It can not be biwired in this config. It has to be two amps involved!

Am I missing something???????

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Ah! There might be symantics involved here. By "bi-wire", G.T. means that the passive networks are left in place and that the LF and HF inputs are used separately. One amp on the LF and one amp on the HF. The dbx comes before the LF and HF amps.

I've never looked at the dbx manual.

Quote:

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Originally Posted by 4313B

:thmbsup:

UHF unhooked. The focus was on the LF and HF.


As one can see, this data is hot off the press. :)

As for the DD65000 and DD67000, they aren't finished yet.

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Thanks, I realized it later:)

G.T can do a test with PA+ and JBL 4319, if he has the time:D

Quote:

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Originally Posted by 4313B

Ah! There might be symantics involved here. By "bi-wire", G.T. means that the passive networks are left in place and that the LF and HF inputs are used separately. One amp on the LF and one amp on the HF. The dbx comes before the LF and HF amps.

I've never looked at the dbx manual.

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Ok, the amp question has been answerd:applaud:

Still don't get it about the numbers of PEQ(10 total in S4700):confused: How did G.T do this??

Does he mix prePEQ and postPEQ together??