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Post by joeldickman on Sept 11, 2008 8:51:30 GMT -7
Has anyone tried driving a Behringer ep 2500 amp directly from the subwoofer output of an Onkyo tx-sr805 receiver? Does the Onkyo have a sufficiently high output voltage to drive the Behringer to full volume?
My understanding is that some a/v receivers do not make beautiful music together with some pro amps because of mismatched output voltage.
Thanks and happy listening,
Joel Dickman
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Post by ThomasW on Sept 11, 2008 9:32:24 GMT -7
Look in the 'specs' section of the owners manual. It should list the analog output voltage. Hopefully it's close to 1 volt.
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Post by joeldickman on Sept 11, 2008 21:49:30 GMT -7
Hello Thomas -
Thanks for the reply. More questions for you: Behringer specifies the input sensitivity of the EP2500 amp as follows:
V RMS (@ 8 w) 1.23 V (+4.0 dBu)
and Onkyo describes the output of the tx-sr805 receiver as:
output level and impedance 270 mv / 470 ohms (rec out)
If I am interpreting this stuff correctly, it looks like the Onkyo's output is too low to drive the Behringer amp to full volume. Questions:
a) What are the audible consequences of this (alleged) voltage mismatch?
b) What is the cheapest / most simple way to do an end run around the voltage mismatch? I was hoping to use the Audyssey room correction feature of the receiver to equalize my subwoofer, and avoid buying a feedback destroyer or similar device.
Perhaps I will be forced to get something like the BFD after all?
Thanks again, and happy listening,
Joel Dickman
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Post by ThomasW on Sept 11, 2008 22:44:23 GMT -7
a) What are the audible consequences of this (alleged) voltage mismatch? Nothing alleged about it, no sound will come out of the sub when there's a mismatch. Scroll down to the "Gotta Match" section home.comcast.net/~infinitelybaffled/page3IB-IBmanifold.htmlWe use the BFD is an equalizer it won't work as a line level shifter. |
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Post by joeldickman on Sept 12, 2008 18:11:16 GMT -7
Thanks again Thomas.
Happy listening,
Joel Dickman
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stewlg
Junior Member
Posts: 88
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Post by stewlg on Sept 12, 2008 18:40:28 GMT -7
Has anyone tried driving a Behringer ep 2500 amp directly from the subwoofer output of an Onkyo tx-sr805 receiver? Does the Onkyo have a sufficiently high output voltage to drive the Behringer to full volume? I'm driving an EP 2500 with an Onkyo TX-SR705, which isn't exactly the same but is surely very close. It works fine, no issues. The sub output level is adjustable, and between that and the EP2500 gain controls I have way way more than enough potential volume. I have a BFD, but at the moment it isn't in the loop, so I'm driving it directly from the subwoofer output, as your question specifies. |
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Post by ThomasW on Sept 12, 2008 20:47:27 GMT -7
I'm driving an EP 2500 with an Onkyo TX-SR705, which isn't exactly the same but is surely very close. It works fine, no issues. The sub output level is adjustable, and between that and the EP2500 gain controls I have way way more than enough potential volume. Interesting the owner manual specs page doesn't list the analog output drive voltage. They list a spec for the record out that's not what we're looking for... |
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Post by eeyore on Nov 23, 2008 22:20:10 GMT -7
I have an Onkyo 805 and two Behringer ep1500's and all is well.
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Post by carvernut on Feb 15, 2009 2:33:58 GMT -7
i have the Onkyo TX-SR805 amp as well, run into a Behringer FBD and then into my Carver TFM-35 and i have no problems with plenty of headroom, 130dB+ of it  |
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