Your comments on my BFD filters please - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #11 of 16 Old 12-11-09, 06:23 PM Thread Starter
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Re: Your comments on my BFD filters please

Wayne

The reason I have made it flat to 100hz using the filters is because it sounds so much fuller. I don't get enough clout from the Monitor Audio RS6's from the onkyo 876 even though they are bi amped. You hear the upper bass much more. It kinda fills in the gaps if you know what I mean.

cheers
Graham
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post #12 of 16 Old 12-11-09, 06:25 PM Thread Starter
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Re: Your comments on my BFD filters please

Wayne,

sorry here's preset 3. Its getting late here in the UK.

cheers
Graham
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post #13 of 16 Old 12-11-09, 06:46 PM Thread Starter
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Re: Your comments on my BFD filters please

Wayne,

Here are the waterfall graphs for preset 3 and 4 EQ filters.

What do you think.

cheers

graham
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post #14 of 16 Old 12-11-09, 06:52 PM
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Re: Your comments on my BFD filters please

Quote:
gperkins_1973 wrote: View Post
I have just re run some new sub/speaker measurements and here are the best two.

Hmm... Now you have a good-sized dip at 50 Hz. That wasn’t there before...

Quote:
Is is better to boost and then trim the sub down or boost very slight and up the sub trim. Does it matter what way you do it.
Makes no difference. The amp and drivers see it as the same thing, as far as the demands placed on them.

Regards,
Wayne



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post #15 of 16 Old 12-11-09, 06:53 PM
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Re: Your comments on my BFD filters please

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gperkins_1973 wrote: View Post
Wayne,

Here are the waterfall graphs for preset 3 and 4 EQ filters.

What do you think.

cheers

graham
Amazingly good.

Regards,
Wayne




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post #16 of 16 Old 12-11-09, 07:00 PM Thread Starter
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Re: Your comments on my BFD filters please

Wayne,

There has always been a dip at 50hz. Probably placement might help although there isn't any where in the room to put the 320lb monster. Preset 3 shows a much smaller dip which is the one I am using now.

I have to say it has been an interesting road building my sub. I have never built one before and my knowledge is pretty thin to be honest but I feel I have learned a few bits on the journey. I now have to veneer it and create some grills to finish her off. I must say that I feel it is a significant improvement over the PB13 I had previously. Music wise its a massive improvement. I really enjoy listening to different types of music now. Its not a perfect sub but what is, I could make two single 18's ported or sealed and maybe iron out the dips etc.. but that would mean getting rid of the last piece of furniture in the room and the other half hates me as it is with building the sub. I will be sorting out that annoying fan this weekend as I am sure that is making it sound pretty rubbish at low volumes. I must say though no hum from the BFD.

I did experience my first thump turning it on last night. Oops!

Thanks for your help Wayne.

You should check out my thread in the diy subwoofers sealed and ported when I veneer it and finish it.

cheers

Graham
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