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Author Topic: Snare drum peaking subs  (Read 5747 times)

Lee Buckalew

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Re: Snare drum peaking subs
« Reply #10 on: July 27, 2015, 10:48:28 pm »

The bypass switch does not mean there are no electronics in line. I expect the snare is clipping those input electronics. Use one of the aux outs from the console to drive the subs, only putting those instruments in the aux mix that make sense in the subs, kick, bass, keys, and use the full range feed that you are using now to just drive the full range system. No snare in the subs, no vocals, no guitar, no cymbals.

Mac

As Mac has suggested you are clipping the input with full range signal prior to the DSP.  Here is a link to the manual.  Look on page 11 for the block diagram of the sub.  http://www.jblpro.com/ProductAttachments/DOC_574.pdf

Lee
« Last Edit: July 27, 2015, 10:51:38 pm by Lee Buckalew »
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Re: Snare drum peaking subs
« Reply #11 on: July 27, 2015, 11:30:57 pm »

As Mac has suggested you are clipping the input with full range signal prior to the DSP.  Here is a link to the manual.  Look on page 11 for the block diagram of the sub.  http://www.jblpro.com/ProductAttachments/DOC_574.pdf

Lee

See also "Input Panel" on p. 15 for proper input sensitivity settings.  The stock photo posted by the OP shows the input control fully clockwise (-10 dB setting) while the manual recommends starting with the control fully COUNTER-clockwise (+4 dB setting).

Hmmmmm...

PS...

It's likely that the snare drum hits are merely the "last straw" rather than the sole offender.
« Last Edit: July 28, 2015, 12:15:05 am by dick rees »
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Lee Buckalew

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Re: Snare drum peaking subs
« Reply #12 on: July 28, 2015, 06:37:07 am »

See also "Input Panel" on p. 15 for proper input sensitivity settings.  The stock photo posted by the OP shows the input control fully clockwise (-10 dB setting) while the manual recommends starting with the control fully COUNTER-clockwise (+4 dB setting).

Hmmmmm...

PS...

It's likely that the snare drum hits are merely the "last straw" rather than the sole offender.

Yes, this is almost certainly a case of incorrect gain structure.  Given the signal path shown on the diagram the clipping indicated at the subs appears to be at the input to the sub rather than at the output of the amp.  The OP needs to go through his system and setup the gain structure properly. 
I would still, as Mac suggested, set up the subs as Aux fed so that I was only sending a few specific signals to the subs.

Lee
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Debbie Dunkley

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Re: Snare drum peaking subs
« Reply #13 on: July 28, 2015, 09:36:49 am »

See also "Input Panel" on p. 15 for proper input sensitivity settings.  The stock photo posted by the OP shows the input control fully clockwise (-10 dB setting) while the manual recommends starting with the control fully COUNTER-clockwise (+4 dB setting).

Hmmmmm...

PS...

It's likely that the snare drum hits are merely the "last straw" rather than the sole offender.

I see this all the time - like on close ups of powered subs/ mids for sale on Craigslist. I am starting to think I'm one of only a few folks who at the end of the night, routinely goes to each cab and turns all the knobs counterclockwise before I switch them off........ I see it with amps too....
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Rich Orde

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Re: Snare drum peaking subs
« Reply #14 on: July 28, 2015, 06:17:43 pm »

See also "Input Panel" on p. 15 for proper input sensitivity settings.  The stock photo posted by the OP shows the input control fully clockwise (-10 dB setting) while the manual recommends starting with the control fully COUNTER-clockwise (+4 dB setting).

The reason we keep the gain wide open is because the kick drum loses too much low end and I don't like to boost lows on the main EQ or on the channel because it gives the kick drum a "pocky" sound.

If I also cut the gain to the highs equally I end up compensating for the loss of volume by bumping up the master slider on the mixer, which it seems would result in the same peaking of the subs, would it not?

I do agree that the best solution is to restructure the outputs so only lows are being sent to the subs.  I don't own the sound system and currently only have access to it at gigs.  I am just using it as originally set up by the guy who does own it.  He has never had this problem because he tends to bury the snare drum in the mix when he mixes the band.
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Rob Spence

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Re: Snare drum peaking subs
« Reply #15 on: July 29, 2015, 12:59:18 am »

I leave my gains wide open so the worst a meddler can do is turn it down.

Why change em at the end of the night? You are just gonna put em back next time.


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William Schnake

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Re: Snare drum peaking subs
« Reply #16 on: July 29, 2015, 08:16:57 am »

Use one of the aux outs from the console to drive the subs, only putting those instruments in the aux mix that make sense in the subs, kick, bass, keys, and use the full range feed that you are using now to just drive the full range system. No snare in the subs, no vocals, no guitar, no cymbals.

Mac

+100  This is how we have ran our systems for years.  It cleans up the low end and the high end.  We always use a Post Fader Aux to send to the sub, this way if you boost the Kick in the mix the sub is brought up in proportion to the Main L/R.

Bill
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Debbie Dunkley

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Re: Snare drum peaking subs
« Reply #17 on: July 29, 2015, 11:55:57 am »

I leave my gains wide open so the worst a meddler can do is turn it down.

Why change em at the end of the night? You are just gonna put em back next time.


Sent from my iPad using Tapatalk HD

I've always turned amps down before turning off- always have and it comes naturally. To me it's the same as closing a door behind you even though you're just gonna open it next time....
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Rich Orde

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Re: Snare drum peaking subs
« Reply #18 on: July 29, 2015, 07:19:14 pm »

+100  This is how we have ran our systems for years.  It cleans up the low end and the high end.  We always use a Post Fader Aux to send to the sub, this way if you boost the Kick in the mix the sub is brought up in proportion to the Main L/R.

Bill
I can see sending a separate mix to the subs but for the tops, they don't have a built in crossover so the signal sent must have a high pass active on it from the mixer.  I will have to get my hands on the band's X32 during the week and toy around with it.
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Re: Snare drum peaking subs
« Reply #19 on: July 29, 2015, 07:38:35 pm »

I can see sending a separate mix to the subs but for the tops, they don't have a built in crossover so the signal sent must have a high pass active on it from the mixer.  I will have to get my hands on the band's X32 during the week and toy around with it.

Video tutorial...there may be more...

http://youtu.be/rtwW1l-FECg
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Re: Snare drum peaking subs
« Reply #19 on: July 29, 2015, 07:38:35 pm »


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