Hello, i have a nad 372 with monitor in an out 1 & 2. I can cannect both equalizers to it. When i press buttons for both monitors on the front, both lite up, but when i click the cd source button, monitor 2 button goes off. Is it possible to use two equalizers? is it worth using two equalizers? and does the one equalizer work for both A & B channels? If not, how can i get it to work?
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As I have figured from your question you are trying to independently control levels for two sets of Bose speakers attached to your NAD amplifier. The problem lies in that the amplifier can only read one signal at a time, so in theory it will only accept a signal from one equalizer and output it to speakers attached to A and/or B terminals. In order to process different eq settings to two seperate pairs of speakers you will need to use two amplifiers, or an amplifier with built in channel controls for speaker set A and speaker set B.
You don't need a schematic. Google "Bose 901 manual" and read it. The speakers get hooked up to the speaker terminals on the NAD and the EQ is connected to the Tape Out and Tape In on the receiver. When you listen, you must engage the Tape Monitor (check the NAD manual on how to do that)
From the description of the Harmon Kardon, it sounds like you should be able to use the speakers, but you will not be able to use the active equalizer. The equalizer is designed to be cabled into the tape monitoring loop and allows you to listen to the equalized signal coming back into the receiver. Attach the +/- speaker wires to the right and left channel speaker connectors on your receiver.
Qualifier: I have 901's in a 7.1 setup and have written many posts on Fixya regarding how to do it right.
NEVER USE MAXIMUM VOLUME FOR ANY PURPOSE UNLESS THE RISK OF ACCIDENTAL SPEAKER DESTRUCTION IS A ACCEPTABLE.
ONLY now it does that? "VERY WEAK" as in attentuated somewhat or is it signal leakage, effectively silence? How is the EQ wired in? Check its own Tape Monitor button.
If you DO NOT have a separate amplifier for the 901's the EQ will affect EVERY speaker and we know that is NOT desired.
If the EQ is in a Tape Loop of a modern AVR and you activate the loop two things will happen: 1) the 901's will sound better and the rest of the speakers will be at risk from excessive amplitude at the extremes; 2) any digital source will be disabled.
The presence of 1/4" TRS balanced phone jacks instead of RCA inputs is a problem; and the 1/4" TRS speaker output jacks, too. You'll need to acquire cables with compatible ends.
The amp can handle 4-ohm loads so running two 901's parallel on each channel would theoretically work, but I'd put them in series just to keep from presenting too low a load when you get cranking. At 230 wpc you've got the juice. From Series 4 on the 901's are very efficient.
The Tape Deck will attach conventionally to the Tape Loop on the Active Equalizer.
Once you get the physical wiring compatibility issues worked out:
Patch the Active EQ directly between any source you may be using (Amp In from the Pre-Out of the source, Amp Out to the Peavey input).
You can record the external source onto the attached Tape Deck and you can monitor it by pressing the Tape switch on the 901 EQ.
Start out at low volume and see how it works before turning it loose.
Bear in mind that 901's require exclusive use of any amplifier they use. You shouldn't expect to use conventional speakers alongside them on the Speaker B terminals. The reason is that the 901's require the uyse of their dedicated Active Equalizer to shape the frequency spectrun to match their drivers' response curves, resulting in a flat sound output. Applying that kind of equalization to any conventional speakers will sound to sharp at the extremes and may even potentially damage them.
You can use them in either of two ways.
Attach the Active Equalizer in your Tape 2 loop, following the clear guide printed on it. Activate Tape 2 to place the EQ in line with the program. Bypassing Tape 2 would show you what 901's sound like without their custom EQ curve. NEVER set the Copy function to 2>1 as this would introduce 901's EQ to whatever is on Tape 1.
TO preserve the use of your Tape attachments (through which you might also run any other kind of sound processor), remove the jumpers between the Pre Out and Normal In and attach the Active EQ there.
Should you anticipate using this rig in a multichannel setup from an AV receiver, just draw the AV receiver's Front L&R out from its Pre Out connectors, or from one of its Tape Out connectors, and into this amp's CD or Video Sound inputs. You would still have the flexibility to use the NAD for your Stereo-only rig, and your AV receiver's stereo sources would be available to it, too.
This is essentially how I run my 901's as the main speakers in my 7.1 home theatre.
Did you buy the 901's new along with the eq? If you did then I wouldn't suspect it to be the eq. If you bought it used, it sounds like the eq. I have had two of them go bad. Are you cutting the bass up on the Onkyo? Do you have the speakers placed correctly, like 18" from the wall? These speakers don't have a lot of bass unless they are placed correctly against a wall. They really sound best in a corner. You should get a difference when you move the opts on the eq though. Hope this helps some
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.
please make sure your receiver has a tape monitor switch on the front panel or pre-in/out sockets at the rear. only then all sources will play thru the bose equalizer. also remember if you need a 5.1 or greater setup, you will need 2 amps/receivers.