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Old 1st April 2005, 07:50 PM   #21
kepa1 is offline kepa1  France
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hello,

i may be interested in 1 MOXlite complete with PCB+parts... but only if there is enough documentation for a beginner like me!

i'm especially interested in the "no additional trafo needed" theory.

regards,

alain
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Old 2nd April 2005, 06:19 PM   #22
AndrewT is online now AndrewT  Scotland
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Hi,
I would like 8 Mox lite.
Q is the discrete opamp of benefit for all frequency ranges i.e. sub-bass, bass, mid & treble?
or
is most benefit for treble only? and maybe mid (800Hz to 6kHz).
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Old 2nd April 2005, 09:36 PM   #23
jleaman is offline jleaman  Belgium
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How much is a single board ?

Is on board per frequancy so if i have 3 way speakers i need 3 board's ? or am i missing something ?

Is that the compleet looking board ?

J'
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Old 4th April 2005, 01:04 AM   #24
tiroth is offline tiroth  United States
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Okay, these are the numbers so far:

MOXlite
Nisbeth: 4
Joster: 4
BG: 8
Jonk: 4
Kepa: 2
AndrewT: 8
Marius: 4
Total: 34

MOX v1.1
Illusus: 4
Joster: 4
Cambe: 4
Total: 12

Based on this interest, I don't think there are enough for a MOX 1.1 order at this time. I'll keep appraising the situation though.

I will definitely go ahead with a MOXlite order. The price is $8 for a single board. I do have a good number of opamp boards available.

jleaman,
The board includes input buffer, two bandpass sections, and a high pass section. It also includes two parametric EQs and regulators.

kepa1,
I will publish schematics and a spreadsheet for determining component values.

AndrewT,
Personally, I think the discrete opamp is most valuable in the mid+high; I don't think there is so much of a difference at lower frequencies.

Here is an updated PCB. I created a separate power ground run, increased the capacitor spacing (except for the 100pF input caps, all caps can be at least .280"/7mm wide), and cleaned up the ground plane some more. Please let me know any other comments.
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File Type: gif moxlite_v11.gif (26.6 KB, 1061 views)
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Old 4th April 2005, 01:18 AM   #25
jleaman is offline jleaman  Belgium
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Quote:
Originally posted by tiroth
Okay, these are the numbers so far:

MOXlite
Nisbeth: 4
Joster: 4
BG: 8
Jonk: 4
Kepa: 2
AndrewT: 8
Marius: 4
Total: 34

MOX v1.1
Illusus: 4
Joster: 4
Cambe: 4
Total: 12

Based on this interest, I don't think there are enough for a MOX 1.1 order at this time. I'll keep appraising the situation though.

I will definitely go ahead with a MOXlite order. The price is $8 for a single board. I do have a good number of opamp boards available.

jleaman,
The board includes input buffer, two bandpass sections, and a high pass section. It also includes two parametric EQs and regulators.

kepa1,
I will publish schematics and a spreadsheet for determining component values.

AndrewT,
Personally, I think the discrete opamp is most valuable in the mid+high; I don't think there is so much of a difference at lower frequencies.

Here is an updated PCB. I created a separate power ground run, increased the capacitor spacing (except for the 100pF input caps, all caps can be at least .280"/7mm wide), and cleaned up the ground plane some more. Please let me know any other comments.
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Old 4th April 2005, 01:21 AM   #26
tiroth is offline tiroth  United States
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Here is a pic of a proto board. The MOXlite boards will have soldermask and silkscreen. I also flipped the ground plane on this protoboard for ease of soldering.

I'll post info tomorrow on how to officially sign up for the order.
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File Type: jpg moxlite.jpg (39.6 KB, 874 views)
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Old 4th April 2005, 08:56 AM   #27
kepa1 is offline kepa1  France
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hello tiroth,

i'm glad the project is coming to life.

correct me if i'm wrong but my aim is to active filter a single sub woofer, so i only need 1 mox lite.

regards.
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Old 4th April 2005, 09:21 AM   #28
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Tyler,

What kind of EQ section do you use?

Can you get Excel to draw gain and phase graphs for the filter?

Will you need input to a manual?

\Jens
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Old 4th April 2005, 01:40 PM   #29
SvErD is offline SvErD  Norway
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Quote:
Originally posted by tiroth
Okay, these are the numbers so far:

MOXlite
Nisbeth: 4
Joster: 4
BG: 8
Jonk: 4
Kepa: 2
AndrewT: 8
Marius: 4
Total: 34

MOX v1.1
Illusus: 4
Joster: 4
Cambe: 4
Total: 12
Seems like you missed my post? ah, I didn't put a number..............
I'd like 4 x MOX lite.

cheers
Svein
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Old 4th April 2005, 03:10 PM   #30
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Default Alternative to Cauer-elliptic filter

These boards are of interest to me for the option of bi-amping a combination of PE's RS-180 with the SEAS 27TDFC. This is done quite well with passive components by Jon Marsh and found here:

http://www.htguide.com/forum/showthread.php4?t=11321

My reservation for using his passive crossover is the cost... over $200/ speaker. I believe this board provides a cost effective alternative. The aluminum cone RS-180 has break-up modes that should be removed with a steep-sloped x-over, such as 48 dB/ octave.
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