DF-55

The hows and whys of running sound.
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Rich4349
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Location: Kankakee, IL

DF-55

#1 Post by Rich4349 » Fri Jul 21, 2017 9:28 am

Overkill, or dream come true? Yes, I know the price is a deal-killer.

http://www.accuphase.com/model/df-55.html
2 DR250s, 2 27" Lab15 T-60s, 2 30" Neo Titan 39s, 1 Autotuba...and looking for more!

Bruce Weldy
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Re: DF-55

#2 Post by Bruce Weldy » Fri Jul 21, 2017 12:31 pm

Rich4349 wrote:Overkill, or dream come true? Yes, I know the price is a deal-killer.

http://www.accuphase.com/model/df-55.html
Pretty fancy name for a crossover.....

6 - T39 4-25" 2-22" 3012LF
4 - OT12 2512 Melded/NSD2005
1 - T24
2 - XF210


"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."

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DJPhatman
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Re: DF-55

#3 Post by DJPhatman » Fri Jul 21, 2017 2:38 pm

Bruce Weldy wrote:
Rich4349 wrote:Overkill, or dream come true? Yes, I know the price is a deal-killer.

http://www.accuphase.com/model/df-55.html
Pretty fancy name for a crossover.....
I don't see a price for it, anywhere. But, 96db/octave filters! :shock:

4-way, in a home setting, is just silly, IMHO. So is using delay. A 40' room has a sound travel time, @ 70°F, of slightly over 36ms. I don't care how good you think your ears are, but the time differences between 30Hz and 20kHz are so minuscule, they are scarcely measurable, let alone detectable by a humans' hearing.
I know money often seals the deal, but seriously, quality is an investment, not an expense... Grant Bunter
Accept the fact that airtight and well-braced are more important than pretty on the inside. Bill Fitzmaurice

Bruce Weldy
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Joined: Fri Nov 27, 2009 11:37 am
Location: New Braunfels, TX

Re: DF-55

#4 Post by Bruce Weldy » Fri Jul 21, 2017 2:51 pm

DJPhatman wrote: I don't see a price for it, anywhere..
I found a used listing at $6800 and it said retail was $12k.

You can buy lots of driveracks for that....

6 - T39 4-25" 2-22" 3012LF
4 - OT12 2512 Melded/NSD2005
1 - T24
2 - XF210


"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."

Rich4349
Posts: 626
Joined: Wed Jul 30, 2008 10:18 am
Location: Kankakee, IL

Re: DF-55

#5 Post by Rich4349 » Fri Jul 21, 2017 4:11 pm

I wasn't planning on using it for the home. I was wondering if the 96dB slope combined with the other computerized wizardry within it would actually bring phase issues to a cold and quick death, as advertised.
2 DR250s, 2 27" Lab15 T-60s, 2 30" Neo Titan 39s, 1 Autotuba...and looking for more!

CoronaOperator
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Location: Medicine Hat, Alberta, Canada

Re: DF-55

#6 Post by CoronaOperator » Fri Jul 21, 2017 8:05 pm

Rich4349 wrote:I wasn't planning on using it for the home. I was wondering if the 96dB slope combined with the other computerized wizardry within it would actually bring phase issues to a cold and quick death, as advertised.
Sure they can, along with ringing. No free lunch.
Built:
17" width 10" driver Autotuba
2 x 29" width dual Lab12 Tuba60
6 x DR250 2510/asd1001
In progress:
2 x DR250 2510/asd1001
For best results, point the loud end of the array towards the audience

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BrentEvans
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Re: DF-55

#7 Post by BrentEvans » Sun Jul 23, 2017 9:42 am

Rich4349 wrote:I wasn't planning on using it for the home. I was wondering if the 96dB slope combined with the other computerized wizardry within it would actually bring phase issues to a cold and quick death, as advertised.
In a word, no.

There are other less expensive dsp units which have such features. I have tried a few. The higher the slope, the worse the sound, generally. I rarely use over a 24db/oct slope these days, and rarely use the same slope on either side of the crossover. Use what sounds good. If that means a 24db LR on the subs and a 12db Bessel on the tops, who cares if it sounds good?
99% of the time, things that aren't already being done aren't being done because they don't work. The other 1% is split evenly between fools and geniuses.

Bruce Weldy
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Joined: Fri Nov 27, 2009 11:37 am
Location: New Braunfels, TX

Re: DF-55

#8 Post by Bruce Weldy » Sun Jul 23, 2017 9:55 am

BrentEvans wrote: Use what sounds good. If that means a 24db LR on the subs and a 12db Bessel on the tops, who cares if it sounds good?
ABSOLUTELY!!!!!!!

6 - T39 4-25" 2-22" 3012LF
4 - OT12 2512 Melded/NSD2005
1 - T24
2 - XF210


"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."

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