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Search: Posts Made By: michael hurd
Forum: DIY Speakers and Subs   06-28-2015, 09:48 PM
Replies: 19
Views: 297
Posted By michael hurd
The torque on the baffle exerted by the weight of...

The torque on the baffle exerted by the weight of the magnetic assembly can be calculated. ;)
Forum: DIY Speakers and Subs   06-28-2015, 02:23 PM
Replies: 19
Views: 297
Posted By michael hurd
Unless you plan to get into an automobile...

Unless you plan to get into an automobile collision, or drop the box down a flight of stairs, normal coarse thread wood screws will hold the woofer in the baffle.

Double up the front baffle if...
Forum: DIY Speakers and Subs   06-28-2015, 09:07 AM
Replies: 70
Views: 1,084
Posted By michael hurd
Not that particular B&C, but I have heard the...

Not that particular B&C, but I have heard the 12NDL76 in a horn, and it measured well, with no anomalies.

Keep in mind that there is a ferrite magnet version with the same cone assembly, and it...
Forum: DIY Speakers and Subs   06-27-2015, 11:41 AM
Replies: 70
Views: 1,084
Posted By michael hurd
http://www.mcsquared.com/wavelength.htm

http://www.mcsquared.com/wavelength.htm
Forum: DIY Speakers and Subs   06-18-2015, 08:25 PM
Replies: 17
Views: 340
Posted By michael hurd
Depends where you are located, but this one was...

Depends where you are located, but this one was highly recommended.

http://www.tapeease.com/
Forum: DIY Speakers and Subs   06-15-2015, 02:23 PM
Replies: 177
Views: 3,550
Posted By michael hurd
I asked for a quote for the heck of it around 8...

I asked for a quote for the heck of it around 8 pm last night. I got an email reply at 3:08 am, about 7 hours after I asked. There was no mention of if that was a shipped price.

This is the...
Forum: DIY Speakers and Subs   06-15-2015, 11:48 AM
Replies: 177
Views: 3,550
Posted By michael hurd
Merrysound Fp14000 = $810, as per email from Amy...

Merrysound Fp14000 = $810, as per email from Amy Song.

Ms Amy Song
Melody Industry Co., Limited.
Add: No. 122, DongHuan Road , ShiQiao Town , PanYu District,
GuangZhou City , GuangDong...
Forum: DIY Speakers and Subs   05-20-2015, 04:35 PM
Replies: 72
Views: 2,078
Posted By michael hurd
X= Al coil H= Cu coil

X= Al coil
H= Cu coil
Forum: DIY Speakers and Subs   04-19-2015, 02:56 PM
Replies: 53
Views: 842
Posted By michael hurd
Can you remove the driver and test it in free...

Can you remove the driver and test it in free air? That would isolate if there is a loose piece inside the horn making the noise. If you set the woofer on it's back, blocking the pole vent, it will...
Forum: DIY Speakers and Subs   04-14-2015, 07:41 PM
Replies: 147
Views: 13,578
Posted By michael hurd
LTD02, this link might clear up your confusion....

LTD02, this link might clear up your confusion. It goes on to state what the differences are.... there are different rules for DC and AC.
...
Forum: DIY Speakers and Subs   04-14-2015, 07:03 PM
Replies: 147
Views: 13,578
Posted By michael hurd
Class 2 wiring is rated for 150V. You can use...

Class 2 wiring is rated for 150V. You can use Class 3 in place of, Class 2, but not the other way around.
Forum: DIY Speakers and Subs   04-14-2015, 06:53 PM
Replies: 147
Views: 13,578
Posted By michael hurd
Class 3 wiring is rated for 300 volts. In other...

Class 3 wiring is rated for 300 volts. In other words, SJOOW if making a portable cord. SOOW is rated for 600V.
Forum: DIY Speakers and Subs   04-12-2015, 04:12 PM
Replies: 147
Views: 13,578
Posted By michael hurd
Yes, LTD02, you are correct. When looking at...

Yes, LTD02, you are correct. When looking at convenience ( single run of 14awg/4c Carol SJOOW ) vs. two runs of 14awg/2c Carol SJOOW ) to my mains, the ampacity of the 14/4 is de-rated compared to...
Forum: Area Home Theater Meets   04-12-2015, 02:27 PM
Replies: 98
Views: 1,586
Posted By michael hurd
Yes, that would be the link on their website. The...

Yes, that would be the link on their website. The space shuttle launch recording I have is labeled STS-123_launch_2496, I was mistaken in thinking it was STS-323.
Forum: DIY Speakers and Subs   04-12-2015, 10:51 AM
Replies: 147
Views: 13,578
Posted By michael hurd
One wrap around a 4" coil former would be ~ 12.56...

One wrap around a 4" coil former would be ~ 12.56 inches. How many feet does that equate when the coil is a bit over 3" long.... that's a few feet of wire in the gap, even when wound with large gauge...
Forum: DIY Speakers and Subs   04-12-2015, 10:42 AM
Replies: 147
Views: 13,578
Posted By michael hurd
There are plenty of voice coils wound with larger...

There are plenty of voice coils wound with larger wire than 26 gauge. My TC LMS 5400's have 19 gauge AL wire. The lead in wires are also large enough to handle peak currents of 30A or more without...
Forum: Area Home Theater Meets   04-12-2015, 08:27 AM
Replies: 98
Views: 1,586
Posted By michael hurd
As far as demo material, I have a few...

As far as demo material, I have a few suggestions:

Tom Danley's fireworks recording
STS-323 launch
Stella Errans ( Cirque du Soleil )
Feel The Music ( Bass Mekanik )
Forum: Area Home Theater Meets   04-12-2015, 08:19 AM
Replies: 98
Views: 1,586
Posted By michael hurd
I have plans for late June, early July, so that...

I have plans for late June, early July, so that time frame might not work for me. Luke, thanks for the offer... I might just take you up on that, but will have to wait to see what date is nailed down.
Forum: Area Home Theater Meets   04-09-2015, 01:37 PM
Replies: 98
Views: 1,586
Posted By michael hurd
I would like to make it this year, but not sure...

I would like to make it this year, but not sure if I can swing it. Put me down as maybe. ( depends on the weekend chosen )
Forum: DIY Speakers and Subs   02-27-2015, 07:14 AM
Replies: 7
Views: 189
Posted By michael hurd
From the old information I have, 2.5KG of added...

From the old information I have, 2.5KG of added mass is the maximum recommended for the TC VMP's.
Forum: DIY Speakers and Subs   02-02-2015, 09:18 AM
Replies: 47
Views: 1,048
Posted By michael hurd
When you were measuring one sub in different...

When you were measuring one sub in different locations, are you shorting the other subs IE: connected to an amplifier that's on, with no signal>?
Forum: DIY Speakers and Subs   11-26-2014, 11:34 AM
Replies: 4
Views: 230
Posted By michael hurd
You can definitely hear an end to end resonance.

You can definitely hear an end to end resonance.
Forum: DIY Speakers and Subs   07-31-2014, 07:42 PM
Replies: 482
Views: 13,718
Posted By michael hurd
First before anything else, I would want you to...

First before anything else, I would want you to acquire and learn to use a microphone and a measurement system. For $ 150ish ( or less depending on what you buy ) and a laptop you can learn a quite a...
Forum: Area Home Theater Meets   07-28-2014, 08:37 AM
Replies: 147
Views: 7,399
Posted By michael hurd
Noesis 215RT vs. Yorkville U215. Audio...

Noesis 215RT vs. Yorkville U215.

Audio memory being what it is, and the long time in between switching these out, they both have similar qualities. They both do things that I have heard very very...
Forum: DIY Speakers and Subs   07-28-2014, 04:37 AM
Replies: 482
Views: 13,718
Posted By michael hurd
This horn was designed around a pair of the...

This horn was designed around a pair of the SWR-12D2:

http://www.avsforum.com/forum/155-diy-speakers-subs/1414166-alpine-swr-12d2-tapped-horn-audio-memorial-bbq-get-together.html

Sketchup files...
Showing results 1 to 25 of 2124

 
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