Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

System Pictures & Description
System Pictures & Description
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
Thread Tools Search this Thread
Old 21st December 2017, 04:05 PM   #161
BP1Fanatic is offline BP1Fanatic  United States
diyAudio Member
BP1Fanatic's Avatar
Join Date: Jan 2009
Location: Columbus, Ohio
Originally Posted by Infinite Audio NZ View Post
8 x slightly modified ES18's, ready to be painted and loaded with Fane Col's. Next up, finishing the Othorns =D

Click the image to open in full size.
That stack looks AWESOME!
  Reply With Quote
Old 10th March 2018, 05:10 AM   #162
dyode is offline dyode  Australia
diyAudio Member
Join Date: Nov 2015
Default My 12" sub


I occasionally wanted more thump to complement the Zaph ZRT 2 ways so I designed and built a 12" PR sub as below as an experiment and they sound OK.

I used 24mm baltic birch ply double thick baffle and shellaced it out of curiosity - worked OK.

I drive it with a PWR-ICE125 and shove a pair of socks into the Zaph ports when I run the Marchand 80Hz CO box to feed the subbie + Zaphs.

At other times I run the Zaphs alone (esp acoustic Jazz etc).

As you can see by the paucity of foam I don't know much but I like the sound... better buy more foam.

I blew up the crossovers and the two drivers in the left speaker when I drank too much and wondered if I could get the Scanspeak cones driven by the 250W amp (Holton Amps parts) to touch the opposite wall...they just fell short... so that's why I put a 10k log pot into the box with the Marchand Hi/Lo pass boards in it and cunningly made the knob silver like the front panel...

Clearly I have no idea what I am doing but it's fun and it sounds good...
Attached Images
File Type: jpg m_IMG_20180310_164357539.jpg (29.2 KB, 511 views)
File Type: jpg m_IMG_4949.jpg (29.4 KB, 514 views)
File Type: jpg m_IMG_4942.jpg (36.5 KB, 466 views)
File Type: jpg m_IMG_4934.jpg (44.6 KB, 461 views)
File Type: jpg m_IMG_4932.jpg (38.0 KB, 65 views)
File Type: jpg m_IMG_4929.jpg (35.8 KB, 70 views)
File Type: jpg m_IMG_4922.jpg (29.7 KB, 71 views)
File Type: jpg m_IMG_4914.jpg (31.0 KB, 63 views)
File Type: jpg m_IMG_4906.jpg (39.2 KB, 73 views)
File Type: jpg m_IMG_4903.jpg (34.5 KB, 73 views)
  Reply With Quote
Old 10th March 2018, 10:16 AM   #163
Zuhl is offline Zuhl  England
diyAudio Member
Zuhl's Avatar
Join Date: May 2011
Location: Sheffield, UK
Prototype small room sub. 180ltr ported enclosure. Peerless 12" XXLS rear facing with a BK-300 plate amp.

It features a 12db/oct passive crossover as the amp's 'contour control' was exactly that and didn't roll off the upper bass enough. Response is -3db at 16hz and -6db at 14hz.

The bass is a bit soft for my liking, but, that's the price of using a cheap amp. That's something I need to fix.

As for music, Poulenc's Concerto in G minor for Organ, Strings and Timpani (Telarc CD-80643) is scary. I can play it at normal listening levels with little effort from the sub. Towards the end there's a sustained low note, well over a minute long, which bunged my ears up...
Attached Images
File Type: jpg D72_3195 1024.jpg (131.3 KB, 172 views)
File Type: jpg Bass XO.jpg (36.5 KB, 180 views)
One good thing about music, when it hits you, you feel no pain - Bob Marley

Linn Karik + Naim NAC72/HiCap/NAP250/NACA5
  Reply With Quote
Old 12th June 2018, 03:50 AM   #164
Arthur Jackson is offline Arthur Jackson  United States
diyAudio Member
Join Date: Dec 2014
Default Sub-thing to be seen

Latest sub project is a dual 12 with a backwards downward firing reverse phase woofer. Its cabinet is 1/2 MDF glued to cement board for constrained layer effect and that covered with mahogany and flame maple. I over did it with mortise and tenon construction. The butterfly is padauk. Notice the whiskey glass is not moving. It has a 1 Kw plate amp, mostly because it was on sale. Its plenty loud without all that power.
Attached Images
File Type: jpg 138E648B-16C8-418D-93C8-09BE8D8673EE.jpg (760.3 KB, 155 views)
File Type: jpg 79798D9E-4C95-4B7E-B5E8-F94E17425574.jpg (756.9 KB, 144 views)
File Type: jpg 2CCC5BD3-1FED-449C-8587-BAF0D3A87FA6.jpg (713.8 KB, 96 views)
  Reply With Quote
Old 12th June 2018, 04:00 AM   #165
Arthur Jackson is offline Arthur Jackson  United States
diyAudio Member
Join Date: Dec 2014
My pictures keep getting posted sidewards. Help or tips for the newb?
  Reply With Quote
Old 18th June 2018, 06:40 PM   #166
Bern Wansen is offline Bern Wansen  Brazil
diyAudio Member
Join Date: Mar 2015
Good evening!
Here are some photos of my horned subwoofer enclosure project that Im making from scrap wood boards from old cabinets the neighborhood droped next to the place I live
Here the fold pattern is deligned and some blocks of wood glued for later fixation of vertical walls of that will make up the horn

sawing... yes I used a handsaw. Its a good tool... a professional saw that's very sharp and trusty.

Then we have proceeded to remove the decorative foil of noble wood that was skinning off anyway... painted the boards with acrylic paint primer then acrylic paint (I was just testing the tone of this blue dye). Later refinents are currently being made on this subject of the finishing of the outsides.

The box was reassembled and the void filled with poliurethane foam. All junctions were sealed with silicon rubber.

Subwoofer hole was cut (omgosh I missed the diameter about 3 times but in the final cut the sub did fit very tightly)

Finally sub was positioned and glued with silicon rubber. No, I can not take it off never and ever again

The cable terminals extend out of the box as you can see, through 2 brass electrical grade screws so I don't really care what happens since everything left to be worked on is the amplifier connections
I didn't even test if the subwoofer is working yet
And not last, but in memory of my friend who helped me with the chisel
Attached Images
File Type: jpg 001.jpg (69.5 KB, 95 views)
File Type: jpg 002.jpg (311.3 KB, 51 views)
File Type: jpg 003.jpg (74.9 KB, 50 views)
File Type: jpg 004.jpg (293.2 KB, 52 views)
File Type: jpg 005.jpg (307.0 KB, 43 views)
File Type: jpg 006.jpg (234.6 KB, 49 views)
File Type: jpg 007.jpg (81.7 KB, 57 views)
File Type: jpg 008.jpg (331.6 KB, 50 views)
File Type: jpg 011.jpg (135.2 KB, 58 views)
File Type: jpg 012.jpg (195.9 KB, 104 views)
  Reply With Quote
Old 11th September 2018, 10:05 PM   #167
Wiggle8 is offline Wiggle8  Canada
diyAudio Member
Join Date: Jan 2016
Location: Halifax, NS
My current temporary living room setup. Mark Audio Alpair 5 bass reflex slim tower and SDX10 bass reflex crossed over at 125Hz. I have started building with the intention for local sales.
Attached Images
File Type: jpg PSX_20180901_125601.jpg (880.9 KB, 51 views)
File Type: jpg newtug3.jpg (232.5 KB, 50 views)
File Type: jpg newpontoons4.jpg (210.2 KB, 43 views)
  Reply With Quote
Old 12th September 2018, 10:06 AM   #168
wolf_teeth is offline wolf_teeth  United States
diyAudio Member
wolf_teeth's Avatar
Join Date: Mar 2006
Location: Indiana
Originally Posted by Zuhl View Post
It features a 12db/oct passive crossover as the amp's 'contour control' was exactly that and didn't roll off the upper bass enough. Response is -3db at 16hz and -6db at 14hz.
I'm going to recommend that you remove the series and parallel resistors on your subwoofer (2 ohm/22 ohm), as all they are doing is shedding heat and becoming a possible fire hazard. the L and CR circuits are okay, just make sure the R is high enough wattage for the current applied.

This is also a likely cause of your subwoofer being too soft because you are losing output just via those resistors alone.

Photobucket picture pages: http://photobucket.com/Wolf-Speakers_and_more
Writeups/thoughts/blogs: http://techtalk.parts-express.com/blog.php?u=4102
  Reply With Quote


System Pictures & DescriptionHide 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

Forum Jump

New To Site? Need Help?

All times are GMT. The time now is 12:09 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio