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Sub 1094a footswitch affect the monitor levels

louisb, modified 8 Years ago.

Sub 1094a footswitch affect the monitor levels

Youngling Posts: 3 Join Date: 5/26/13 Recent Posts
I have a stereo setup in my recording studio where I use two Genelec 1094a subwoofers.

I have a manual switch that I setup so I can switch them on or off, the thing is that when I switch the subs on the audio level on my monitors drops. When I cut off the subs the volume on my monitors go up. I think that the difference in level is about 2 to 3 db.

I have two sets of monitors, Yamaha ns10's and Main Monitors Boxers T5. This happens with either set.

Is this a common issue with Genelec subwoofers when using a foot switch? Is there a way around this problem other than having a monitor management system with dedicated subwoofer output?

Thanks in advance for the help.

Louis
ilkka-rissanen, modified 8 Years ago.

Re: Sub 1094a footswitch affect the monitor levels

Yoda Posts: 2564 Join Date: 3/23/09 Recent Posts
Hi Louis,

It definitely sounds strange. How have you connected the sub to the system? What signal goes into the subwoofer and what goes out (if any)?

Using the remote bypass function should only mute the subwoofer and bypass the crossover for the signals routed through the subwoofer (for example from left input to left output).
louisb, modified 8 Years ago.

Re: Sub 1094a footswitch affect the monitor levels

Youngling Posts: 3 Join Date: 5/26/13 Recent Posts
Hi Ilkka,

Thanks for your reply.

I wanted to spend enough time so I could try everything on my end in order to narrow down the problem before replying to your post but so far the attenuation is drastic when I engage both 1094's and I can't figure out why.

My setup is as follow:

Signal from my ssl console goes to both 1094's (left and right) from there it goes to my near field monitors ns10's and main Monitors Boxers T5. both sets of monitors can be selected via a passive switch. ( tried without the switch box and nothing has changed)

The Left Monitor is connected to the left 1094 in the left connectors and the right monitor to the right 1094 in the right connectors.

When I engage both 1094's via footswitch I can see that the woofers on ns10's or Mains will stop moving and I see on the crossover of the mains a 3 db gain drop. Some of mid low action disappear from the main monitors when both 1094's are engaged.

Perhaps the 1094's crossovers are cutting more than it should?

Is there an adjustment in the crossover internally on the 1094's?

This big level drop is really affecting the accuracy of my monitors and at this point I find that without both 1094's engaged the frequency response seems to be more accurate.

If there's way to bypass the crossover or at least to adjust this gain change so I can continue using both subs.

I have a Dangerous Monitor system in another room with a separate sub woofer connection, this way when I cut the sub the other speakers are not affected. Should I consider the same option in this case?

I appreciate your help and suggestions.

Best Regards,

Louis
ilkka-rissanen, modified 8 Years ago.

Re: Sub 1094a footswitch affect the monitor levels

Yoda Posts: 2564 Join Date: 3/23/09 Recent Posts
Hi,

The internal crossover or gain is not adjustable. It is fixed at 85 Hz.

Is it really that the total level of the main speakers go down by 3 dB? Or is it only the bass region (under 85 Hz) which gets attenuated? Can you play a 1 kHz tone (not a wide band noise like pink noise) and measure SPL without and with the subwoofers engaged?
louisb, modified 8 Years ago.

Re: Sub 1094a footswitch affect the monitor levels

Youngling Posts: 3 Join Date: 5/26/13 Recent Posts
Hi Ilkka,

I will try running a 1k tone today and let you know what happens.

Thanks again for the reply.

Louis