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Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 5:37 pm
by Electric Wisdom
Hey!!!!
I'm so excited to start this simplex 212 project, if it goes well i might build another after.
For now i think i will use a mixer, this amp and some bass pedals.
https://www.sweetwater.com/store/detail/XLS2502
I just bought the baltic birch 1/2" wood today.
Will post pictures later tonight.
Might ask a few questions too to all of you gurus

Thanks for making theses plans!! I can't beleive so many cabs out there not even close to what i need in the low end area.
Let the journey begin!!!!! haha

Re: Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 5:54 pm
by Bill Fitzmaurice
If you're an experienced bass player and have used this type of set up and like it that's fine, but otherwise you're probably better off with a bass amp. There are many out there that don't cost any more than the Crown does.
Re: Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 6:36 pm
by Electric Wisdom
So... first thing i'm not sure... what is this circle hole from the simplex 12 build document?
It's the paid plans... i posted a small picture, don't want to post this stuff as free as little as possible, let me know if it's not accepted here.
Re: Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 6:36 pm
by Electric Wisdom
Bill Fitzmaurice wrote: ↑Fri Mar 02, 2018 5:54 pm
If you're an experienced bass player and have used this type of set up and like it that's fine, but otherwise you're probably better off with a bass amp. There are many out there that don't cost any more than the Crown does.
Ok but why exactly? (besides pricing)
Edit: i was planning to use a pedal with cab sim out (darkglass omega ultra) as my main sound, in a mixer, in the poweramp
Re: Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 8:18 pm
by Grant Bunter
Electric Wisdom wrote: ↑Fri Mar 02, 2018 6:36 pm
So... first thing i'm not sure... what is this circle hole from the simplex 12 build document?
It's the paid plans... i posted a small picture, don't want to post this stuff as free as little as possible, let me know if it's not accepted here.
1.JPG
It's an inductor
Re: Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 8:20 pm
by Grant Bunter
Electric Wisdom wrote: ↑Fri Mar 02, 2018 6:36 pm
Bill Fitzmaurice wrote: ↑Fri Mar 02, 2018 5:54 pm
If you're an experienced bass player and have used this type of set up and like it that's fine, but otherwise you're probably better off with a bass amp. There are many out there that don't cost any more than the Crown does.
Ok but why exactly? (besides pricing)
Edit: i was planning to use a pedal with cab sim out (darkglass omega ultra) as my main sound, in a mixer, in the poweramp
Read this thread:
viewtopic.php?f=30&t=24638
Re: Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 8:23 pm
by Bruce Weldy
I'm assuming a small mixer? Not enough EQ available to properly EQ a bass guitar. The center frequencies on a small mixer with 3 band EQ are not at all what you want for bass. That's way more amp than you need too.
Bill is right - buy a good bass amp. Smaller, lighter, plenty of power and will sound better.
Re: Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 8:28 pm
by Electric Wisdom
Grant Bunter wrote: ↑Fri Mar 02, 2018 8:18 pm
Electric Wisdom wrote: ↑Fri Mar 02, 2018 6:36 pm
So... first thing i'm not sure... what is this circle hole from the simplex 12 build document?
It's the paid plans... i posted a small picture, don't want to post this stuff as free as little as possible, let me know if it's not accepted here.
1.JPG
It's an inductor
Ohhh thanks

haha
Re: Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 8:32 pm
by Electric Wisdom
Bruce Weldy wrote: ↑Fri Mar 02, 2018 8:23 pm
I'm assuming a small mixer? Not enough EQ available to properly EQ a bass guitar. The center frequencies on a small mixer with 3 band EQ are not at all what you want for bass. That's way more amp than you need too.
Bill is right - buy a good bass amp. Smaller, lighter, plenty of power and will sound better.
Small mixer yes but not really for the bass sound, i know theses eq are very very very minimal, i never said i will use eq from the mixer, i will use the eq on the darkglass omega ultra, and also the HPF in the poweramp to remove the very very low end. I'm not really a fan of the distortions in the bass amps besides the tubes ones but i want a small amp this time, and i'm really not a picky guy for the clean sound, i find very attractive the alpha omega and it's cab sim out since this simplex cab isnt voiced and i like that pedal sound, if that make sense?
What amp would you suggest?
I just cutted some parts for the 212, and already i think about building 2 instead of 1 hhahhah, they look a lot bigger in pictures than in real life, i can manage 2 of theses cabs easy haha
Pics soon, my phone is charging up
Re: Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 10:20 pm
by Electric Wisdom
yes i will,
i cant buy easily and quick the same handles as the plans, they seem smaller than all i can get, can i use theses instead?
The ones i see at stores in canada are bigger and i fear they will cause problem because of the thigh space with the inside braces.
Re: Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 10:24 pm
by Electric Wisdom
Any reason i can't use just 1/4 jacks instead of speakon?
can i use speakon with 1/4, put all of them in parallel and use only 1 of them for input and another to chain another cab in parallel with either the 1/4 or speakon? That would leave possibilities for future cases where speakon or 1/4 arent quickly available...
Re: Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 10:38 pm
by Electric Wisdom
So i made this, just wondering if any one can confirm it's good? Please please? haha
If i check the 3d plan they are in parallel, both woofers in parallel, in parallel with the tweeters that are also in parallel, that makes a 8ohm cab ? 8+8 ohm in parallel is 4ohm but i'm not sure how it works with the crossover and the 2 speakon connectors also in parallel
I would think woofers would be in series to get 16 ohm, tweeters too at 16 ohm in series, then tweeters with woofers in parallel to end up at 8ohm?
Re: Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 10:46 pm
by Tom Smit
Not quite. Since you are planning to parallel wire the drivers, you need to count them as 4 ohm....each set will be 4 ohm.
Re: Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 11:19 pm
by Electric Wisdom
Tom Smit wrote: ↑Fri Mar 02, 2018 10:46 pm
Not quite. Since you are planning to parallel wire the drivers, you need to count them as 4 ohm....each set will be 4 ohm.
Ok thanks so that picture i posted is a wiring for 2ohm cabinet right? This is whats by default planned for the 212 simplexx?
Re: Simplexx 212 build w/ Pics
Posted: Fri Mar 02, 2018 11:23 pm
by Electric Wisdom
What represent exactly the 4,8,16 ohm title under each tweeter crossovers?
I have to choose the middle one for the tweeter and woofer that i use (which are 8ohm each) ? or does it refer to the cabinet total impedence with the used wiring setup?
Or... since i will wire the 2 tweeters in parallel that makes 4 ohm so i must use the left diagram for the crossover for the tweeters? then same concept for the woofers?