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Forum: DIY Speakers and Subs   08-20-2014, 08:35 PM
Replies: 77
Views: 4,386
Posted By mtg90
More to come ;)

More to come ;)
Forum: DIY Speakers and Subs   08-16-2014, 08:42 PM
Replies: 77
Views: 4,386
Posted By mtg90
Thanks, if you look close you can see I spaced...

Thanks, if you look close you can see I spaced them off the walls. The smaller/black panels have about a inch gap, the larger blue ones about 1.75". Can't really push them too far out without it...
Forum: DIY Speakers and Subs   08-16-2014, 07:11 PM
Replies: 77
Views: 4,386
Posted By mtg90
Yeah I wanted to try something different then a...

Yeah I wanted to try something different then a regular square panel for those. The bevel turned out nice once I figured out what settings to use on my miter saw to make them.

The landscape...
Forum: DIY Speakers and Subs   08-16-2014, 01:23 PM
Replies: 16
Views: 211
Posted By mtg90
If you have a speakon plate on your sub assuming...

If you have a speakon plate on your sub assuming you did not solder the wires to the terminals (or even if so) it may be easier to swap the - wire from the 1- terminal to the 2+ terminal then it...
Forum: DIY Speakers and Subs   08-16-2014, 01:11 PM
Replies: 77
Views: 4,386
Posted By mtg90
Before I forget I wanted to post some info about...

Before I forget I wanted to post some info about my DIY acoustic panels. The panels were very simple and inexpensive to build and made a huge improvement in the overall sound.

Materials I used:...
Forum: DIY Speakers and Subs   08-15-2014, 09:32 PM
Replies: 345
Views: 12,871
Posted By mtg90
Different output voltages, but I always leave it...

Different output voltages, but I always leave it on the 2k ohm setting.
Forum: DIY Speakers and Subs   08-15-2014, 08:55 PM
Replies: 345
Views: 12,871
Posted By mtg90
I built my own 5 channel voltage divider, very...

I built my own 5 channel voltage divider, very simple and inexpensive solution for those that don't have preamp outputs. Works great, I don't have measurements to show but I know I tested it by...
Forum: DIY Speakers and Subs   08-15-2014, 09:32 AM
Replies: 11,041
Views: 717,549
Posted By mtg90
The Beta-8CX with DNA-150 on the back is 5.125"...

The Beta-8CX with DNA-150 on the back is 5.125" deep. Should just barely squeeze into a 6" deep box if flush mounted with 3/4" construction. Maybe 5.75" with 1/2", and 5.5" if you surface mounted...
Forum: DIY Speakers and Subs   08-14-2014, 09:58 AM
Replies: 7
Views: 227
Posted By mtg90
Storage life is 24 months at 75 degrees F, your...

Storage life is 24 months at 75 degrees F, your garage probably is not so consistent but the glue is freeze/thaw stable. Before you throw it out try gluing a couple scraps together, if the...
Forum: DIY Speakers and Subs   08-11-2014, 11:06 AM
Replies: 345
Views: 12,871
Posted By mtg90
I ordered a pair of the x1000's late midday...

I ordered a pair of the x1000's late midday Saturday, just got the shipping confirmation today. They are still out there, my guess is that if a store does not have any within a certain distance from...
Forum: DIY Speakers and Subs   08-10-2014, 02:24 PM
Replies: 7
Views: 294
Posted By mtg90
The new woofer is pretty much the same as the...

The new woofer is pretty much the same as the original Beta-8A, it's a custom variant Erich had manufactured by eminence with an impedance better suited for MTM usage. Voicing will be the same as the...
Forum: DIY Speakers and Subs   07-30-2014, 01:47 PM
Replies: 21
Views: 454
Posted By mtg90
You have EQ right :D It should not be too...

You have EQ right :D


It should not be too bad. I only used a little bit of BSC knowing these are going to be wall mounted so placing it in 2pi should not cause any problems with to much or...
Forum: DIY Speakers and Subs   07-30-2014, 01:34 PM
Replies: 21
Views: 454
Posted By mtg90
It sounds good, flattening it out above 1k really...

It sounds good, flattening it out above 1k really helped tame things, those on axis HF peaks are still present but they are far less annoying now. The little bit of BSC also helped bring out the...
Forum: DIY Speakers and Subs   07-30-2014, 01:06 PM
Replies: 21
Views: 454
Posted By mtg90
Here is what I came up with, attached are the new...

Here is what I came up with, attached are the new schematic, parts list (xover BOM), off axis plots, 20 degree plot showing individual woofer/tweeter response & combined. and comparison of the...
Forum: DIY Speakers and Subs   07-29-2014, 09:02 PM
Replies: 21
Views: 454
Posted By mtg90
It does have cone breakup between 4-7khz as seen...

It does have cone breakup between 4-7khz as seen in the graph below which shows the native woofer response (no xover) at 0-40 degrees in 10 degree increments.
Forum: DIY Speakers and Subs   07-28-2014, 07:30 PM
Replies: 21
Views: 454
Posted By mtg90
Beyma 8CX300Nd/N crossover re-design

Blame beastaudio for this one! :D

http://www.usspeaker.com/images/beyma-8cx300ndn-size325.gif

The Beyma 8CX300Nd/N is a nice 8" coaxial unit with an external horn for the HF driver rather...
Forum: DIY Speakers and Subs   07-27-2014, 08:16 PM
Replies: 7
Views: 148
Posted By mtg90
I think these speakers are meant to have a custom...

I think these speakers are meant to have a custom EQ curve applied to them which helps boost the bass. Without it the bass/midbass will sound weak since the sensitivity of the rest of the range is...
Forum: DIY Speakers and Subs   07-27-2014, 08:01 PM
Replies: 21
Views: 324
Posted By mtg90
1ms of delay is just over 1' of delay, so you...

1ms of delay is just over 1' of delay, so you would want to delay your near field subs roughly 6.5' or around 6ms assuming these are identical subs.
Best practice to measure any of these changes....
Forum: DIY Speakers and Subs   07-27-2014, 07:00 PM
Replies: 263
Views: 11,748
Posted By mtg90
Erich and I thought it might have been the lack...

Erich and I thought it might have been the lack of a flatpack option. What's funny is after he took it off the site because they were not selling and we were unsure about the future availability of...
Forum: DIY Speakers and Subs   07-27-2014, 06:49 PM
Replies: 21
Views: 324
Posted By mtg90
The miniDSP 2x4 balanced has Phoenix connectors...

The miniDSP 2x4 balanced has Phoenix connectors for input/output and power input. These are small connectors that accept bare or tined wire. You need to go from XLR or RCA (depending upon what you...
Forum: DIY Speakers and Subs   07-27-2014, 03:15 PM
Replies: 263
Views: 11,748
Posted By mtg90
Only 8 of the original Fusion-15's ever sold,...

Only 8 of the original Fusion-15's ever sold, Gorilla83 has three, Chopshop bought three then sold them to someone in NY after the idea of something bigger got off the ground and someone got the last...
Forum: DIY Speakers and Subs   07-26-2014, 10:09 PM
Replies: 1
Views: 171
Posted By mtg90
Anyone near Charleston, SC? Only 12 hours left!

http://www.ebay.com/itm/LOT-OF-8-Cyber-Logic-NC816-Power-Amplifiers-Made-For-EAW-750-Crown-Macrotech-/251594095658?pt=US_Pro_Audio_Amplifiers&hash=item3a942d3c2a


Over 80,000w of amps for $750,...
Forum: DIY Speakers and Subs   07-26-2014, 09:48 PM
Replies: 6
Views: 127
Posted By mtg90
I hate to say it but there is a 90% chance you...

I hate to say it but there is a 90% chance you have a burned up woofer voice coil in that one. The woofer cone should move freely when pressed upon without any scratching sounds. While there is a...
Forum: DIY Speakers and Subs   07-26-2014, 08:21 PM
Replies: 6
Views: 127
Posted By mtg90
It looks like the front cover is plastic and...

It looks like the front cover is plastic and could possibly be removed by screws hidden behind the rubber boots for the grill pegs. You should then be able to remove the woofer and check the...
Forum: DIY Speakers and Subs   07-26-2014, 03:36 PM
Replies: 13
Views: 525
Posted By mtg90
I have one of these lent to me by beastaudio for...

I have one of these lent to me by beastaudio for which I am going to design a custom crossover for. I expect the crossover parts will cost far less then $95 and tuned more appropriately for home...
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