This is my first start to finish speaker build and I have some questions I was hoping you guys could answer. I have built one pair of speakers before, a DIYSoundGroup pair of Apollo 7 TMs. I was really happy with them as a stereo system and now I want to put together a 3.1 system. I am constrained a little bit with height, as TV mount height limits me to 5” of clearance.
The 5” clearance is where the need to build comes into play. I was shopping around for center channel, but i wasn’t excited about the ones I found that would fit.
At first I was thinking of a MTM in a vented box, but then I got to thinking about a MMTMM in a 2.5 way configuration. I’ve been toiling around with WinISD and XSim, but am not exactly 100% confident about what I’m doing.
For the box I plan to use 1/2" MDF instead of the usual 3/4, in order to save space. I've played around with a small one and a larger one, but in it's current design I am thinking of two separate chambers instead of one big one. Each having a vent off to the side. Does this serve an advantage over one large box? With the current tuning I should get an F3 of 77.5, which should be fine.
For driver selection, I figured it would make sense to use a tweeter that is the same as my other speakers to match, the Wavecor TW030WA11. It happens that the Wavecor makes a pretty good looking driver that fits the bill. I've also looked at some Daytons, a Tang and one from Scan Speak.
Tweeter: TW030WA11
Wavecor TW030WA11 30mm Semi Horn Loaded Textile Dome Tweeter with Rear Chamber 4 Ohm
Woofer: WF120BD03
Wavecor WF120BD03 4-3/4" Balanced Drive Paper Cone Mid-Woofer 4 Ohm
I think I should keep it 4 ohm to match my Apollo MT's. Does this make sense?
Do I base my voltage on Denon’s states specs of 75w into 8 ohms stereo? Does a home theater receiver’s power change when driving 2, 3, and 5 channels?
How much should I be concerned with baffle step here?
Given that this is a MMTMM center, do I need to only look at "Midrange" speakers vs Woofers? I understand that these differ, but for this application which way should I lean?
After reading a good amount of reading, I'm looking at 2.5 way instead of a 2 way. It seems a bit more complicated, but not too crazy. It looks like if I wire the mids in parallel-series I can keep the ohms at 4.
Thanks in advance for any advice! This is still the first real draft and some of the dimensions are still in play. Also, I'm a noob here obviously, and there will probably be some very obviously problems here that I am not seeing. Cheers!
The 5” clearance is where the need to build comes into play. I was shopping around for center channel, but i wasn’t excited about the ones I found that would fit.
At first I was thinking of a MTM in a vented box, but then I got to thinking about a MMTMM in a 2.5 way configuration. I’ve been toiling around with WinISD and XSim, but am not exactly 100% confident about what I’m doing.
For the box I plan to use 1/2" MDF instead of the usual 3/4, in order to save space. I've played around with a small one and a larger one, but in it's current design I am thinking of two separate chambers instead of one big one. Each having a vent off to the side. Does this serve an advantage over one large box? With the current tuning I should get an F3 of 77.5, which should be fine.
For driver selection, I figured it would make sense to use a tweeter that is the same as my other speakers to match, the Wavecor TW030WA11. It happens that the Wavecor makes a pretty good looking driver that fits the bill. I've also looked at some Daytons, a Tang and one from Scan Speak.
Tweeter: TW030WA11
Wavecor TW030WA11 30mm Semi Horn Loaded Textile Dome Tweeter with Rear Chamber 4 Ohm
Woofer: WF120BD03
Wavecor WF120BD03 4-3/4" Balanced Drive Paper Cone Mid-Woofer 4 Ohm
I think I should keep it 4 ohm to match my Apollo MT's. Does this make sense?
Do I base my voltage on Denon’s states specs of 75w into 8 ohms stereo? Does a home theater receiver’s power change when driving 2, 3, and 5 channels?
How much should I be concerned with baffle step here?
Given that this is a MMTMM center, do I need to only look at "Midrange" speakers vs Woofers? I understand that these differ, but for this application which way should I lean?
After reading a good amount of reading, I'm looking at 2.5 way instead of a 2 way. It seems a bit more complicated, but not too crazy. It looks like if I wire the mids in parallel-series I can keep the ohms at 4.
Thanks in advance for any advice! This is still the first real draft and some of the dimensions are still in play. Also, I'm a noob here obviously, and there will probably be some very obviously problems here that I am not seeing. Cheers!
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You're going to have a ton of issues out past 30 degrees, which depending on your room could be a large issue. Take a look through here (I just flipped through a lot of it) - it's a good read and may help answer many of your questions - First-Timer Home Theater Speaker Build.