Using two equalizers on two sets of Bose 901's

The Bose 901 speakers require the use of a specific equalizer that is designed to optimize their performance. If you have a Bose 901 equalizer, you will need to connect it to your Lafayette 3500 receiver in order to properly use the speakers.
Here are the general steps for connecting the Bose 901 equalizer to your Lafayette 3500 receiver:

1. First, ensure that the power is turned off on both the receiver and the equalizer.
2. Locate the preamp output jacks on your Lafayette 3500 receiver. These will typically be labeled as "pre out" or "line out".
3. Connect a pair of RCA cables from the preamp output jacks on your receiver to the input jacks on your Bose 901 equalizer. These jacks are typically labeled as "preamp in" or "line in".
4. Next, connect another pair of RCA cables from the output jacks on your Bose 901 equalizer to the main amplifier input jacks on your receiver. These jacks are typically labeled as "main in".
5. Turn on your receiver and equalizer, and ensure that the volume levels are set to a low level before playing any music.
6. Set the Bose 901 equalizer to the "On" position, and adjust the various equalizer controls to your preferred settings.
7. Finally, play some music and adjust the volume levels as needed. You should notice a significant improvement in the sound quality of your Bose 901 speakers with the equalizer properly connected.

Note: It's important to use the Bose 901 equalizer specifically designed for the speakers. Using a different equalizer or not using any equalizer at all may result in poor sound quality or damage to the speakers.

any equalizer that has the capacity to drive the speakers will do the job

It sounds like you may have only the 901 loudspeakers, and not also the companion 901 equalizer box. You must install the 901 equalizer properly--using the tape monitor loop of the G901 receiver. If you of not, the 901 loudspeakers will perform poorly.

1

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."

2

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.

3

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.

4

Plug the 901 equalizer into a 120-volt electrical outlet. Your 901 equalizer is now installed.

Read more: How to Install a Bose 901 Equalizer ' eHow.com http://www.ehow.com/how_4813156_install-bose-equalizer.html#ixzz19vfsJTQu

As far as I know, any equalizer will work. There is a guy on here that might know more about them, but I never had the Bose equalizer and I have Bose speakers for 35 years. The guy at the electronic store back then sold us a little equalizer at first, we graduated from that a long time ago, and now on the 3rd or 4th one. No problem, works great, sounds better than ever. Hope this helps.

There is no direct connection between the 901's and their Active Equalizer. It is designed to be inserted between the source and the DEDICATED amplifier driving the speakers. Typically, this would be in a Tape Monitor loop on a receiver.

Tape Rec/Out to EQ In; EQ Out to Tape Play/In on the receiver. If you have a tape deck(s), it(they) would go into the back of the Bose EQ as if it was the receiver and you would use the Tape and 1/2 buttons for selection.

Or,if you have access to any other point that doesn't use the Tape Monitor, like a Pre Out/Main In jumper set, place the Equalizer there. That way it's always in front of the speakers and doesn't take up the Tape Mon.

Flip in the Tape Monitor and leave it on or the speakers will not receive the essential ACTIVE Equalization they require for proper frequency response. DO NOT place non-901's onto any amp using the Active EQ.

Like any speakers, the 901's will attach to the speaker terminals in the conventional manner.

how do I hook up the bose 901 EQ to a yamaha DSP3090??

1-record out from receiver to to equalizer in.
2-equalizer out to tape pb in receiver.

No. Active Equalization is required for the 901's and not to be used with any non-901 speakers.

one option that may yield results, since the bose connection to equalizer is presently not possible is to set the speaker out put on the denon for 'small' on all but the front speakers.
and then set the delay for all speakers based on the distance to the amp.
this should result in better audio that that with the bose eq.
will work on the issue of using the eq. with the denon if you like. but, you will likely not improve on the sound with the denon set up correctly.
good luck
mark