JMJ's speaker construction/random help thread.

[Jam_Master_J]

Hey everyone,
As some of you probably know, I'm going to build some ported MTMs based on the M8a and RS28. I've started this thread so I could contain all my questions into one big thread.

So, first off: I'm building the cabinets first. I'm thinking that routing all the speakers edges down to a 45 degree angle will give me a look I want. I'm getting the MDF most likely next weekend so I can get started. I'm going with double MDF for all panels. So my first question is:
Would I be better off building the inner-layer of the speaker first, or just glue my panels first and working with them in double-thick form?

As well, regarding bracing: Are there any particular things I should keep in mind when designing braces for the cabinets?

Thanks,
JMJ

[ThomasW]

I build the outer layer first then glue in the inner layer. My mistakes are less obvious that way and it's not necessary to deal with the weight of 1.5" panels.

There are multiple examples of bracing on various threads in the forum. The general idea is to keep the wall vibration to a minimum and not obstruct air flow around the drivers.

[Jam_Master_J]

Thanks. As well ,is there any benefit to go with bi-wire compatible binding posts for this project?

[ThomasW]

I'm no big fan of bi-wiring, but I use dual posts in all my projects. That allows for easy testing/troubleshooting and active biamping if one wants

[Jam_Master_J]

Sounds good, the doubles are only a little more expensive anyway. I'll go with them to keep my options open.

[Paul H]

Sounds good, the doubles are only a little more expensive anyway. I'll go with them to keep my options open.

Just a personal taste thing, but I prefer and use the individual through-bolt binding posts to avoid the plastic-mounted contraptions - just looks cleaner to me - food for thought.

Paul

[Brian Bunge]

I agree with Paul. And my next speakers will have 3 sets of binding posts.

[JoshK]

I am a fan of Speakon's myself. 4-pole for biwiring/biamping.

[Jam_Master_J]

So if I go with doubles posts I just wire the woofer section to one set(top or bottom) and the tweeter section to the other set. And if I don't bi-wire/amp I just have to leave the piece in place that connects the two sets?