What would you do with a DD9515 for SQ?

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Topic: What would you do with a DD9515 for SQ?

The_dew2000
unregistered

posted

Say you had one DD9515, and you had to make the best sounding box possible, max SQ, how would you make it?

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Iboomalot
Senior Member
Member # 77

posted

3.5 net tuned to 30hz

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---Member of Team Gates---

Don't knock it, if you know nothing about it.

Posts: 3071 | From: Okla USA | Registered: May 1999 | IP: Logged |

Rybaudio
Senior Member
Member # 2880

posted

I would start with a 4 cube box, with an adjustable 30-40 Hz tuning, and then put it in the vehicle, take some response measurements, and adjust volume and tuning to get a good flat freq response. I like Iboomalot's suggestion for a quick design, but I must note I had great performance from a 9515 in 3.8 cubes tuned to 36 Hz in my car...in fact it was within 1 dB from 30-75 Hz. IMO you can't ask for more than that. Fast and flat [Big Grin]

It really is a different application than dropping a sealed box facing backwards into a trunk. IMO there is much more work involved with getting ported to work well freq response wise, but in the end, it is worth it.

Posts: 3955 | From: State College, PA | Registered: Sep 2000 | IP: Logged |

lacent
Senior Member
Member # 6853

posted

since the 9515 is pretty much a midbass driver i wouldnt recommend the 30hz tuning, just the fact of the fs being 36hz tells you that you need to up the tuning i would go with about a 45hz tuning, get that nice punchy feeling while still dropping LOW, hell my 60hz tuning still drops low as hell so dont worry about it really

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-Pioneer DEH-P730
-DD9515
-2 MMATS D300hc's
-All forms together for a pretty killer system in my 02 Dodge Dakota
150.7 Legal DB Drag
148.6 Legal N.S.P.L, WV state record holder

Posts: 1196 | From: Pineville WV | Registered: Oct 2001 | IP: Logged |

IceWaLL
Senior Member
Member # 2846

posted

just because a sub has a high fs doesnt mean jack... that only tells u what the end result of the suspension is.

when u put a sub in a box the fs changes!

if u build it correctly, the bass will come...

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eclipse cd5000
DD 9515
4.25 cu. ft box 83 sq inch port.

if u port it, bass will come

Posts: 2722 | From: Clark,NJ | Registered: Sep 2000 | IP: Logged |

quote:

Originally posted by Iboomalot:
3.5 net tuned to 30hz

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click for pic's

1999 Ford Explorer Sport 4X4
-Alpine CDA-9831
-CDT CL-51 two way component's {front}
-CDT CL-5X coaxial's {rear}
-Cadence A4
-Cadence A7HC
-1 DD 9515 in a 5 cub. box tuned
to 35 hz with 65.25 sq.inches
of vent

Twiztid One
Senior Member
Member # 8260

posted

quote:
Originally posted by Iboomalot:
3.5 net tuned to 30hz

Posts: 2156 | From: the psychopathic house | Registered: Jan 2002 | IP: Logged |

Iboomalot
Senior Member
Member # 77

posted

once broken in the Fs drops. I doubt one person on this board has more knowledge on the workings of a DD9500 even if tweaking to the product has been done since I left. 60hz as suggested is on the high side unless you want a peaky SPL type box. I suggest tuning around the 28-35hz range for more of a flat response. If its not boomy enough for you then try 45hz.

--------------------
---Member of Team Gates---

Don't knock it, if you know nothing about it.

Posts: 3071 | From: Okla USA | Registered: May 1999 | IP: Logged |

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