would this design create cancellation?

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04nata

Copper - Posts: 358

Joined: April 22, 2008

Posted: May 18, 2014 at 5:03 PM / IP Logged

Would this type of setup create massive cancelation?

would this design create cancellation? -- posted image.

2004 Hyundai Sonata

Kenwood KDC-X599 HU

2-Sundown X-18D4

2-SQ Q4500.1

2-SQ Q90.4

1-Massive DBX4

8-Niche 5.25 mids

8-Niche Tweeters

4-Skar 8" mid-bass

OhioGen 220a alt

OhioGen 350a alt

156.0

oldspark

Gold - Posts: 4,913

Joined: November 03, 2008

Location: Australia

Posted: May 18, 2014 at 7:42 PM / IP Logged

IMO unless constant frequency with appropriate phasing (delays), yes.

Whether "massive" cancellation depends on dimensions & frequency.

04nata

Copper - Posts: 358

Joined: April 22, 2008

Posted: May 18, 2014 at 7:44 PM / IP Logged

It would be 6 - 15's, constant and equal frequncies to all 6 subs, I have no way of creating delays

2004 Hyundai Sonata

Kenwood KDC-X599 HU

2-Sundown X-18D4

2-SQ Q4500.1

2-SQ Q90.4

1-Massive DBX4

8-Niche 5.25 mids

8-Niche Tweeters

4-Skar 8" mid-bass

OhioGen 220a alt

OhioGen 350a alt

156.0

04nata

Copper - Posts: 358

Joined: April 22, 2008

Posted: May 18, 2014 at 7:59 PM / IP Logged

Would this have less chance of being an issue?. all 15's, all sealed (seperate) and all at the same, brand, same frequency and power

sorry for the crude diagrahm

would this design create cancellation? -- posted image.

2004 Hyundai Sonata

Kenwood KDC-X599 HU

2-Sundown X-18D4

2-SQ Q4500.1

2-SQ Q90.4

1-Massive DBX4

8-Niche 5.25 mids

8-Niche Tweeters

4-Skar 8" mid-bass

OhioGen 220a alt

OhioGen 350a alt

156.0

oldspark

Gold - Posts: 4,913

Joined: November 03, 2008

Location: Australia

Posted: May 18, 2014 at 9:16 PM / IP Logged

What frequency?

04nata

Copper - Posts: 358

Joined: April 22, 2008

Posted: May 18, 2014 at 9:37 PM / IP Logged

=< 55HZ

2004 Hyundai Sonata

Kenwood KDC-X599 HU

2-Sundown X-18D4

2-SQ Q4500.1

2-SQ Q90.4

1-Massive DBX4

8-Niche 5.25 mids

8-Niche Tweeters

4-Skar 8" mid-bass

OhioGen 220a alt

OhioGen 350a alt

156.0

oldspark

Gold - Posts: 4,913

Joined: November 03, 2008

Location: Australia

Posted: May 18, 2014 at 11:44 PM / IP Logged

The wavelength @ 50Hz is about 6m so if dimensions are negligible in comparison. IE - based on your first diagram, end speakers 1m apart will about ~60 degrees out of phase; or ~20 degrees if at 20Hz (if I calculated right; ie 330m/s).

Others should be able to advise - I'm not into audio & speakers etc.

04nata

Copper - Posts: 358

Joined: April 22, 2008

Posted: May 19, 2014 at 12:56 AM / IP Logged

But the second diagram should be fine right?

2004 Hyundai Sonata

Kenwood KDC-X599 HU

2-Sundown X-18D4

2-SQ Q4500.1

2-SQ Q90.4

1-Massive DBX4

8-Niche 5.25 mids

8-Niche Tweeters

4-Skar 8" mid-bass

OhioGen 220a alt

OhioGen 350a alt

156.0

oldspark

Gold - Posts: 4,913

Joined: November 03, 2008

Location: Australia

Posted: May 19, 2014 at 1:28 AM / IP Logged

You're gonna have reflections & path differences.

What are you trying to do?

Why not one or fewer speakers straight out?

04nata

Copper - Posts: 358

Joined: April 22, 2008

Posted: May 19, 2014 at 9:33 AM / IP Logged

I already have 4-15's walled, all built for SQ, sealed (no ports, just my personal choice), but I want MORE, so was gonna go with 2 more and another JX1000D

I have seen tons of setups with subs facing directly at each other, doesnt this cause cancelation?

would this design create cancellation? -- posted image.

2004 Hyundai Sonata

Kenwood KDC-X599 HU

2-Sundown X-18D4

2-SQ Q4500.1

2-SQ Q90.4

1-Massive DBX4

8-Niche 5.25 mids

8-Niche Tweeters

4-Skar 8" mid-bass

OhioGen 220a alt

OhioGen 350a alt

156.0

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