How to Hook Up 4 Dq-10 speakers

The primary reason is not all speakers can be stacked effectively due to wave interaction called comb filtering.

Drivers must be spaced "exactly" the right distance from each other for this effect to be lessened. Differing wave lengths (frequencies) require exact distances.

On the speakers where we DID stack them, like the DQ10s and ADVENTS we either got "lucky" or we ignored the combfiltering that occured.

That is my best assessment as to why it isn't common today.

Summitav

Oh yes, I remember Advents too, so I would love to hear more about this - it seems many people (including Mark Levinson) also got "lucky" with Quads.

I had a friend and audio mentor circa 1979 who was very lucky with KLH9s.

If speakers were stacled vertically, wouldn't all the drivers, on a relative basis, be similarly oriented to the listener?

I am willing to acquire another amp to run the additional 2 DQ10's if that's necessary. But I don't know how to actually wire it up via the DQ-LP1 crossover. Do you use the center two outputs, similar to what you'd do to hook up 2 more subwoofers. I want to stack the 4 DQ10s and am looking for guidance how to do that. Hey, Dean, I am about to receive 2 more DQ10s, so I'll have 6; maybe you'd like that additional pair? Summitav - I think you may have explained how to do it, but I'm a novice and don't quite understand. Currently the Tandberg amp running 2 Dq10s is more than sufficient, as is the Tandberg amp running the 2 subwoofers. Do I need a 3rd amp to run the second set of DQ10's? Thanks for all help from everyone.

If speakers were stacled vertically, wouldn't all the drivers, on a relative basis, be similarly oriented to the listener?

Because different size drivers produce diferent sized wave lengths and dispersion patterns the comb filtering occurs as those wave lengths (energy causing the air to move) interact when they encounter each other. It might be likened to small waves and large waves in a swimming pool.

The energy from both the small and large waves has an effect on each other. It is all very complex and my example is "oversimplification".

Like wave lengths like those from the tweeters if the speakers are stacked tweeter to tweeter would comb through each others energies as the dispersion from each intersected the other. The effect of the energy (wave distortion) is what causes the filtering, as they tend to cancel or reduce each other to a degree.

Since I am not an acoustical engineer, I am explaining this very badly. Maybe a dual garden hose example might offer some insight.

Lets say the "tweeters" were like having two garden hoses in your hands and you have each set to "spray". As the spray from one hose spreads out and encounters the spray from the other their energies (sprays) interupt each other and cause distortions not seen in the spray for a single nozzle.

Hope that offers a small amount of a "lay" explanation of the energy interaction.

Next week we'll discuss how this causes what is called the "venetian blind effect" in large single planar drivers like the magneplanar. LOL....

Summitav - I think you may have explained how to do it, but I'm a novice and don't quite understand. Currently the Tandberg amp running 2 Dq10s is more than sufficient, as is the Tandberg amp running the 2 subwoofers. Do I need a 3rd amp to run the second set of DQ10's? Thanks for all help from everyone.

It would probably work "best" if you used an amp channel for each DQ-10 and sub.

DQ10s are probably less than 90db efficient so they like LOADS of power. As well of you ran them on one amp in parallel then that would be a large 4 ohm load.

To use another amp for the second pair simply use a Y-connector (or sometimes called a Y-splitter or cable) to split the output to run to each amp.