jbl gto804 tapped horn/ folded horn - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 15th January 2012, 07:56 AM   #1
diyAudio Member
 
Join Date: Nov 2011
Smile jbl gto804 tapped horn/ folded horn

im looking to build a tapped or folded horn for a single 8" jbl gto804, ive built a tapped horn before for two 6.5" subwoofers and it works brilliantly, but it lacks in the low end, i dont know how to design them i had someone do one for me and i was hoping for the same again,
voice coil dc resistance - 3.49 (ohms)
voice coil inductance @ 1khz1.64 (mh)
driver radiating area 33.17 (in2)
214.00 (m2)
motor force factor 12.88 (tm)
compliance volume vas 16.42 (litres)
0.58 (ft3)
suspension compliance cms 251.00
moving mass, air load 115.00 (grams)
moving mass, diaphrahm 113.20 (grams)
free air resonance 29.60 (hz)
mechanical q 6.37 (qms)
electrical q 0.450 (qes)
total q 0.42 9 (qts)
magnetic gap height 3/8 (in)
9.00 (mm)
voice coil height 1-1/4 (in)
32 (mm)
maximum excursion 7/16 (in)
11.50 (mm)
  Reply With Quote
Old 15th January 2012, 09:32 AM   #2
diyAudio Member
 
Join Date: Sep 2007
That elements sim. well in a TH. I looked it up to se if a Kraken 28 would be
possible. Just plans so long, but the drivers looks nice on paper.
  Reply With Quote
Old 15th January 2012, 09:51 AM   #3
diyAudio Member
 
Join Date: Nov 2011
is it possible though ? i dont know anything about tapped horns and other designs so im was hoping for someone to do one for me lol
  Reply With Quote
Old 15th January 2012, 09:56 AM   #4
diyAudio Member
 
Join Date: Nov 2011
how about an elemental designs 9kv.2 8"
Qts: .30
Qes: .38
Qms: 3.5
Fs: 23 Hz
Re: 7.4
Vas: 45 L
Mms: 71.4 g
Bl: 15.34 T*m
SPL: 86.2 dB
Sd: 231 cm^2
Xmax: 14.1 mm
Voice Coil: 38 mm


Magnet Width: 4.800"
Cutout Diameter: 7.25"
Mounting Depth: 4.375"
Weight: 10 lb
Total Height: 4.900"
Displacement: .05 ft^3
Outside Diameter: 8.375"

this woofers around the same price as the jbl
  Reply With Quote
Old 15th January 2012, 04:07 PM   #5
NEO Dan is offline NEO Dan  United States
diyAudio Member
 
NEO Dan's Avatar
 
Join Date: Jun 2008
Location: N.E. Ohio
I would NOT design for ED drivers, they are not the specs they claim; I have measured TSP's for both versions of the 18" and they are not even close. When I contacted ED the excuse they gave me was they don't have the ability to measure drivers...
__________________
Regards,
Dan
  Reply With Quote
Old 15th January 2012, 04:09 PM   #6
diyAudio Member
 
Join Date: Nov 2011
ive also read about their bad customer service,hopefulyl i'll be able to find a workable design for my jbl gto804
  Reply With Quote
Old 15th January 2012, 04:23 PM   #7
ODougbo is offline ODougbo  United States
diyAudio Member
 
Join Date: Aug 2011
Location: Maryland USA
If sombody was twist my arm I'd build a new one, with a new/better driver.

What to look for, a low Q Sub woofer?
Attached Images
File Type: jpg TH build loose.JPG (226.4 KB, 694 views)
  Reply With Quote
Old 15th January 2012, 04:26 PM   #8
diyAudio Member
 
Join Date: Nov 2011
ive got someone designing me one at the moment, the they said the jbl doesnt have a good flat response in a t-line or a bandpass but good response in a ported box, but i love the bass production of a horn, i didnt want to have to buy a new subwoofer if i had to, just make do with what ive got ?
  Reply With Quote
Old 15th January 2012, 04:40 PM   #9
NEO Dan is offline NEO Dan  United States
diyAudio Member
 
NEO Dan's Avatar
 
Join Date: Jun 2008
Location: N.E. Ohio
Click the image to open in full size.
This driver?
As previously mentioned it looks good
What about the previous TH was not good enough?
What driver and box design did you use?
__________________
Regards,
Dan
  Reply With Quote
Old 15th January 2012, 04:47 PM   #10
diyAudio Member
 
Join Date: Nov 2011
yeah that jbl, the th i have now is brilliant for quite listening, but as i turn the volume up it doesnt perform idealy at louder levels, but then again im using cheap skytronic 6.5" woofers, they're 8ohms 125watts rms and ive got two in parralel, ive got the plans on sketchup but i dont know how to post them in here, its tuned to around 35hz and goes really loud and the low end, i'd like to use the jbl and tune it to around 30hertz or lower if possible without having a big box
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Entering horn meaurements fora folded horn (hornsrep) Tidy Max Software Tools 3 21st February 2011 02:28 AM
would these be ok in a tapped horn or folded, any ideas, i got two the price is good mastadon Subwoofers 19 25th December 2010 03:02 AM
2" tapped or folded horn? bnbgn Subwoofers 17 3rd December 2010 01:21 AM
Ron's Austin II, old T-Horn, Lab12 Tapped horn, CNC Photo Background layertone Full Range 2 23rd December 2009 12:51 AM
how to go from horn response to a folded bass horn design? paulspencer Subwoofers 8 4th November 2005 10:44 PM


New To Site? Need Help?

All times are GMT. The time now is 11:12 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2