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Quarter Wave / T-Line tutorial-UPDATED


Forevrbumpn

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MR. Foreverbumpin, when will we get pictures back on the first page? I'm reading everything and have to imagine what you are building. I NEED pictures... plz...

99 4runner - So far: Alpine PDX4.100 & AQ1200D. Needz speekrz yo.

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  • 2 weeks later...

ForEverBumpin

So im helping a buddy with a tline build for a JL12w7. He saw mine that I have for my Alpine Type R 15"s and fell in love. Can you please help me, I have gotten confused all over again.

Here's some info you might need:

Free Air Resonance (Fs): 27.2 Hz

Electrical “Q” (Qes): 0.514

Mechanical “Q” (Qms): 7.807

Total Speaker “Q” (Qts): 0.482

Equivalent Compliance (Vas): 2.33 cu. ft. / 66.0 liters

One-Way, Linear Excursion (Xmax)*: 1.15 in. / 29 mm

Reference Efficiency (no): 0.249%

Efficiency (1W/1m)**: 86.2 dB SPL

Effective Piston Area (Sd): 84 sq. in. / 0.0542 sq. m.

DC Resistance (Re): 2.47 ohm

Nominal Impedance (Znom): 3 ohm

Thermal Power Handling (Pt): 1000W

Driver Displacement: 0.14 cu. ft. / 4.0 liters

Net Weight: 45 lbs. / 20.4 kg

take baby steps, u cant do it all at once unless u have a roll of 100's big enough to choke a donkey

1998 Chevy Venture "Swagger Wagon"

Kenwood Excelon KDC-X994 Headunit

3 15" Alpine Type R's in seperate T-Lines

1 RF T1500-1bd for 2 of the 15s

1 RF P1000-1bd for the single 15

3 sets of Hifonics Zeus ZXi6.5C Components( 1 more set to come for Front stage)

1 Hifonics HFi100.4 4-channel amp

Stock alt for now (DC HO SPL 400A when funds come in,currently working on buying this)

Stock battery and one Optima Redtop for now (looking at XS batteries)

3 15" Alpine Type R's (aka Swagger Wagon Build 1.0)

Swagger Wagon Build 2.0

Youtube Videos

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Hey can I grab some help please with my tline?

I have calculated the tunnel for my single 12 with 43 square inches of port with the tunnel being 10.7 long. Just wondering how you figure out the size of the box where the woofer is mounted? Obviously it needs to be big enough for the mounting depth of the sub but how big? This is the only part I don't understand.

Product Specifications

Max Power Rating (Watts): 2000

RMS Power Rating (Watts): 1000

Coil Height (Hvc): 40

Compliance (Cms): 180.8

Cone Area (Sd): 47.92

D.C. Coil Resistance (Re): 0.94

Electrical Q (Qes): 0.47

Force Factor (Bl): 8.53

Free Air Resonance (Fs): 26.38

Frequency Response: 21Hz - 500Hz

Gap Height (Hag)(mm): 10

Impedance (Nominal): 1

Inductance (Le) (mH): 0.5

Linear Excurson (Xmax): 40

Mechanical Excursion (mm): 15

Mechanical Q (Qms): 6.42

Moving Mass (Mms): 219.88

Sensitivity (dB) (1W/1M): 85

Total Loudspeaker Q (Qts): 0.44

VAS (L): 52.21

VAS (CuFt): 1.845

Magnet Structure (Oz): 308

Total Loudseaker Displacement (L): 8

All the measurements are in mm or cm unless otherwise stated.

Thanks for any help!

1988 Honda City E

  • Big 3 in 1/0
  • Venom 6x9
  • Venom 6.5 Components
  • Response 4x100 midz and highs amp
  • Fusion NV 2500.1: STOLEN
  • 2 x 12 inch fusion nv subs
  • 10 inch 5 doller subs in my doors

PM me if you want help with electrical

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sorry for bumping a old topic but i need help with a t line my self

i get how to calculate the cone are before you do it but idk the process and numbers needed to find the correct port length

Introduce a no fat chicks in the whip rule.

Im gonna have tech force make up a sign that says that and put it on my car lol

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First, you need help figuring out how to use the edit button. No wonder you have so many posts...it takes you 10 posts to ask one question.

2002 Pontiac Bonneville SSEi

Pioneer DEH-P6000UB

Alpine SPX-17REF 6.5" components (active)

Sundown SAX-50.4

Sundown z15 (3 cubes @ 35 hz)

Sundown SAX-1200D

2006 Buick Rainier CXL AWD V8

Stock Bose system

12" Alpine Type E in aeroported box

Profile AP1000M

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First, you need help figuring out how to use the edit button. No wonder you have so many posts...it takes you 10 posts to ask one question.

sorry gezz and but can any one tell me the process ?

Introduce a no fat chicks in the whip rule.

Im gonna have tech force make up a sign that says that and put it on my car lol

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