Question about Bose 901 VI Main / Stereo Speaker
I bet it would work if you listened to something 2-channel and analog. THAT is the limitation of anything that uses a proccessor (like the 901's) and modern AVR's.
Multichannel AVR's automatically disconnect digital inputs when a tape loop is activated.
Short answer from personal experience.
There is no way around this part. Get a separate power amp for the 901's if you want to use them in a multichannel way or alongside non-901 speakers.
The reason: You can't use the Active EQ (or ANY processor) in a tape Monitor loop with anything but 2-channel stereo material. As soon as you activate the loop you lose digital sources.
Adding to YOUR particular problem is that the 3375 doesn't have a volume-controlled pre-out to feed that amp. If you want to deal with controlling the separate amp volume manually
You COULD place some RCA Y-splitter cables where the Pre/Main jumers are and send a stereo mixdown instead of true front channel to the Active EQ and thence to a separate amp, but it's not true front channel. But you would have local control of the 901 volume after you calibrate them to match whatever other speakers you use.
When did they stop making AVR's with 7.1 pre-outs? My 9-year old Pioneer has them and I have 901's, 301's and a sub going.
Posted on Apr 28, 2011
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Posted on Jan 02, 2017
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Jan 15, 2015 | Bose Audio Players & Recorders
The following is some boilerplate I made up that should explain some usage limitations.
Be advised that the engagement of any device in a Tape Monitor loop on a late-model Audio/Video Receiver will effectively tie the receiver down to stereo-only analog sound reproduction. I'll explain.
The connections themselves are fairly simple but it pays to understand what happens in the loop.
In general, any Line-Level external processor (EQ, dynamic range expander, etc) will go into a Tape Monitor loop on a receiver. A Tape Monitor, when engaged, sends the stereo analog signal Out to the Processor, massages it and returns it to the receiver via the Tape Monitor IN connectors to be passed on to the receiver's internal processes (volume, tone, whatever).
Old school analog stereo-only receivers consistently work this way. Newer digital and audio/video receivers introduce a couple of problems: 1) digital sound processing to simulate a variety of soundfields; 2) multiple output channels, either discrete or digitally-generated.
The latter requires that whatever signal is being processed experiences a maximum of one analog-digital-analog conversion.
EVERYTHING analog coming into the modern digital receiver is automatically converted to a digital signal for internal processing unless you choose a STEREO-only or STEREO-Direct setting. Consequently, no further external analog-digital conversions would be allowed if, say, a Tape Monitor circuit was activated, and a possible feedback loop could otherwise be created in a digital-sourced selection (output to its own input), so the unit is wired to treat the Tape Monitor as the first analog step in the process and defeats any pure digital sources.
In a multichannel unit, what would happen to the other channels if you sent ONLY the Front Left & Right out for processing? They would NOT be processed. That logical problem also plays into the decision to defeat digital sources if the Tape Monitor is activated. I don't totally agree with the engineers but that's the way it is. Nature of the digital beast.
Okay, back to the hook-up:
Any of the following audio connections on the HK will work: Tape, Vid1 or Vid 2.
Receiver Tape Out (Rec) - to the External Processor (EQ, whatever) Preamp-, Rec, Line-In;
Receiver Tape In (Play) - from the External Processor (EQ, whatever) Preamp-, Play , Line-Out.
So, to sum up, you can only use the EQ or any outboard processor for analog stereo sources. If you actually want to use an analog recording deck you could place it within the typical Equalizer
Feb 04, 2011 | Harman Kardon Audio Players & Recorders
Examine your receiver to be sure it has a tape monitor loop. Receivers with a tape monitor loop will have a button or switch on the front for "Tape Monitor," and have two sets of RCA connections on the back, one labelled "Tape In," and the other "Tape Out."
Take the two cables that are provided with the 901 speakers and insert one end of the first cable into the "Amplifier Input" jacks of the equalizer. Connect the red connector to the R input and the other connector to the L input. Connect the other end of this cable into the "Tape Out" connections on the receiver. Again, hook red to R and the other to L.
Connect the second cable between the "Amplifier Output" jacks of the 901 receiver and the "Tape In" connections on the receiver. Follow the guidelines in Step 2 for R and L connections.
Plug the 901 equalizer into a 120-volt electrical outlet. Your 901 equalizer is now installed.
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