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Re: Simplexx 1x12 questions
Posted: Thu Jun 29, 2023 10:27 am
by Bruce Weldy
Verb wrote: ↑Thu Jun 29, 2023 10:19 am
Sorry for my poor diagram.
The +1 and -1 are the connections on the speakon sockets and the wires go to the crossover inputs.
hmmm......still doesn't make sense to me. Only one set of wires from the input jack should go to the crossover sections. The other jack is just paralleled to the first jack.
Take a picture of the crossover and the jack panel.
Re: Simplexx 1x12 questions
Posted: Thu Jun 29, 2023 11:54 am
by Verb
In the plans, Bill connects the low pass board to the one jack, and the High pass board to the other jack with wires linking the two Jack's.
What I have hopefully done is parallel the second jack with the first, and then split the cables coming from the first jack to feed the separate crossover boards.
Re: Simplexx 1x12 questions
Posted: Thu Jun 29, 2023 11:59 am
by Seth
Two, 2 pole SpeakOn's, one wire lead off each tab, the positive lead's of the two SpeakOn's are connected together, the negative lead's of the two SpeakOn's are connected together, then the resultant combined positive and negative lead's go to the input's of the crossovers. If that's correct... that's correct.
Post a pic of the crossovers
Re: Simplexx 1x12 questions
Posted: Thu Jun 29, 2023 12:40 pm
by Bill Fitzmaurice
To elaborate when you said 'Connected full range straight to the jack , I feel there is noticeable improvement.' there should be no difference in the low end response. The low pass filter has no effect below 2kHz.
Re: Simplexx 1x12 questions
Posted: Thu Jun 29, 2023 12:53 pm
by Verb
Seth wrote: ↑Thu Jun 29, 2023 11:59 am
Two, 2 pole SpeakOn's, one wire lead off each tab, the positive lead's of the two SpeakOn's are connected together, the negative lead's of the two SpeakOn's are connected together, then the resultant combined positive and negative lead's go to the input's of the crossovers. If that's correct... that's correct.
Post a pic of the crossovers
Apart from using 4 pole speakons this is what I have done.
I posted pics of the crossovers earlier in this thread.
This is my jack panel.
Not the greatest pic, but hopefully it shows the positive leads from eack jack connected together and then splitting to feed the crossovers and similar connections for the negative leads.
Re: Simplexx 1x12 questions
Posted: Thu Jun 29, 2023 12:56 pm
by Verb
Bill Fitzmaurice wrote: ↑Thu Jun 29, 2023 12:40 pm
To elaborate when you said 'Connected full range straight to the jack , I feel there is noticeable improvement.' there should be no difference in the low end response. The low pass filter has no effect below 2kHz.
With the noticeable improvement, I feel the first woofer may be faulty or damaged. My concern is that I could damage the replacement when I connect it to the crossover.
Re: Simplexx 1x12 questions
Posted: Thu Jun 29, 2023 1:12 pm
by Bill Fitzmaurice
The crossover can't cause damage to the woofer. Only over-powering or being dropped can do that.
Re: Simplexx 1x12 questions
Posted: Thu Jun 29, 2023 4:21 pm
by Verb
Bill Fitzmaurice wrote: ↑Thu Jun 29, 2023 1:12 pm
The crossover can't cause damage to the woofer. Only over-powering or being dropped can do that.
Thanks Bill, that's good to know
Re: Simplexx 1x12 questions
Posted: Fri Jun 30, 2023 9:50 am
by Seth
Verb wrote: ↑Thu Jun 29, 2023 12:53 pm
This is my jack panel.
The wiring looks fine. Post pics of the crossovers if you want us to double check them for you.
Re: Simplexx 1x12 questions
Posted: Fri Jun 30, 2023 11:19 am
by Verb
Thanks Seth. There are pictures of my crossovers on the previous page of this thread, you kindly double checked them when I was concerned about my hissing tweeter.
Re: Simplexx 1x12 questions
Posted: Fri Jun 30, 2023 9:14 pm
by Seth
Re: Simplexx 1x12 questions
Posted: Wed Jun 12, 2024 4:59 am
by Verb
I finished my cab last year and unfortunately was far from happy with the result. The overall sound I would describe as flabby, lacking definition and very mid/treble focused. Bass response was very poor and distorted. I have 2x 3012HO drivers and the results were the same with both. I decided to try again with a new build but the results are no better. I have sealed around the joints on the new build and only fitted the woofer with the cable exiting out of a port to eliminate any possible air leaks. Do you think my symptoms could be the result of air leaks? Does it sound like I have 2 duff drivers.
Re: Simplexx 1x12 questions
Posted: Wed Jun 12, 2024 9:55 am
by Bruce Weldy
Verb wrote: ↑Wed Jun 12, 2024 4:59 am
I finished my cab last year and unfortunately was far from happy with the result. The overall sound I would describe as flabby, lacking definition and very mid/treble focused. Bass response was very poor and distorted. I have 2x 3012HO drivers and the results were the same with both. I decided to try again with a new build but the results are no better. I have sealed around the joints on the new build and only fitted the woofer with the cable exiting out of a port to eliminate any possible air leaks. Do you think my symptoms could be the result of air leaks? Does it sound like I have 2 duff drivers.
Why the need to seal around the joints? If you used PL Premium, the squeeze out will seal the joint. What glue did you use?
As far as flabby, what kind of EQ are you dialing up on the amp? If you are looking for more bass, don't turn up the bass knob, turn down the treble and increase the volume. That will give you more bass without adding all of those low end frequencies and harmonics.
Re: Simplexx 1x12 questions
Posted: Wed Jun 12, 2024 12:21 pm
by Verb
Thanks for your reply Bruce.
PL Premium isn't available in the UK as far as I know. I used a PU expanding wood glue. I had plenty of squeeze out, but wanted to make sure I didn't have air leaks, so ran caulk along the joints inside.
I am leaving the EQ flat. Adding bass just makes things worse.
Re: Simplexx 1x12 questions
Posted: Wed Jun 12, 2024 1:09 pm
by Bruce Weldy
Verb wrote: ↑Wed Jun 12, 2024 12:21 pm
Thanks for your reply Bruce.
PL Premium isn't available in the UK as far as I know. I used a PU expanding wood glue. I had plenty of squeeze out, but wanted to make sure I didn't have air leaks, so ran caulk along the joints inside.
I am leaving the EQ flat. Adding bass just makes things worse.
No knowing what amp you are using and what EQ bands are available, try turning back the treble and/or mids and just increase the volume. You might even try turning back the bass a bit. You might get more punch with a little less bass - hard to tell without knowing the amp and controls.......
Any pedals? Or, just straight in?
