Simplexx 1x12 questions

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Verb
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Re: Simplexx 1x12 questions

#16 Post by Verb »

Would a water based flexible acrylic decorators caulk be suitable for sealing under the handle flanges?

Verb
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Re: Simplexx 1x12 questions

#17 Post by Verb »

I'm using a BGH25 and an L-pad in my cabinet. Do I need to test the polarity of the BGH25 before fitting the L-Pad, or can I just connect the crossover to the + and - speakon terminals, the L-pad to the crossover output, and the L-pad + output to the red BGH25 terminal?

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Bill Fitzmaurice
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Re: Simplexx 1x12 questions

#18 Post by Bill Fitzmaurice »

Read the bottom of page 19, and the top of page 20.

Verb
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Re: Simplexx 1x12 questions

#19 Post by Verb »

Bill Fitzmaurice wrote: Fri Dec 30, 2022 1:49 pm Read the bottom of page 19, and the top of page 20.
Thanks Bill.

I had read those pages. I wasn't sure if it was ok to switch the wires around if I already have the L-pad connected, or if I needed to do the test prior to fitting the L-pad.

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Bill Fitzmaurice
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Re: Simplexx 1x12 questions

#20 Post by Bill Fitzmaurice »

You switch them at the driver, so there's no reason not to connect the LPad.

Verb
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Re: Simplexx 1x12 questions

#21 Post by Verb »

Bill Fitzmaurice wrote: Fri Dec 30, 2022 3:17 pm You switch them at the driver, so there's no reason not to connect the LPad.
Thanks Bill

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Bill Fitzmaurice
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Re: Simplexx 1x12 questions

#22 Post by Bill Fitzmaurice »

There's a better way to do it, now that I think about it. Get this app on your phone:
https://play.google.com/store/apps/deta ... ioanalyzer

Set it to Spectrum Analyzer, 1/3 octave, C Weighting, Slow Response. Download a Pink Noise generator, play it through your amp/speaker. Then follow the HF driver polarity test procedure. Whichever way the leads are connected that gives the flatter response result on the RTA screen is the way to connect them.

Verb
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Re: Simplexx 1x12 questions

#23 Post by Verb »

Bill Fitzmaurice wrote: Fri Dec 30, 2022 4:16 pm There's a better way to do it, now that I think about it. Get this app on your phone:
https://play.google.com/store/apps/deta ... ioanalyzer

Set it to Spectrum Analyzer, 1/3 octave, C Weighting, Slow Response. Download a Pink Noise generator, play it through your amp/speaker. Then follow the HF driver polarity test procedure. Whichever way the leads are connected that gives the flatter response result on the RTA screen is the way to connect them.
Excellent, thank you.

vinceom
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Re: Simplexx 1x12 questions

#24 Post by vinceom »

Hi. Is there someone here who had installed a Beyma SM212 in a simplexx 12?
Thanks !!

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Seth
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Re: Simplexx 1x12 questions

#25 Post by Seth »

vinceom wrote: Sun Feb 05, 2023 5:19 pm Hi. Is there someone here who had installed a Beyma SM212 in a simplexx 12?
Thanks !!
For questions like this it's best to start your own thread in the future. But, since we're already in...

Simplexx 2x12 Build with Beyma SM212's
Build in process - 2 WH6, one Alpha 6a loaded, one PRV Audio 6MB250-NDY loaded

Two 2x6 shorty SLA Pro's
One T39, 16", 3012LF loaded
Tall AutoTuba, 20" wide, 2x 8" MCM 55-2421
TruckTuba, 8½" wide, 2x 8" MCM 55-2421

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Bill Fitzmaurice
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Re: Simplexx 1x12 questions

#26 Post by Bill Fitzmaurice »

Seth wrote: Sun Feb 05, 2023 7:39 pm For questions like this it's best to start your own thread in the future.
For sure. Not only is it poor etiquette to thread bomb but you're far less likely to get answers when your specific question doesn't appear in the thread heading.

vinceom
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Re: Simplexx 1x12 questions

#27 Post by vinceom »

I have a Beyma sm-212 and I wanted to be sure that this driver will fit well in simplexx 12 design. Plans are not free !!
Thanks

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Bill Fitzmaurice
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Re: Simplexx 1x12 questions

#28 Post by Bill Fitzmaurice »

Understood, but thread bombing isn't the way to do it. Besides that there's this:
viewtopic.php?t=276

vinceom
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Re: Simplexx 1x12 questions

#29 Post by vinceom »

Ok, thanks . And sorry for thread bombing ….

Verb
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Re: Simplexx 1x12 questions

#30 Post by Verb »

Well I've finally got my cab to a functional stage, the end is in sight
I am using a 3012HO and a BGH25 with Bill's crossover design and an L-pad..
I am getting a fair amount of hiss from the tweeter, is this normal, or have I messed up somewhere?

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