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Forum: DIY Speakers and Subs   10-25-2016, 01:29 PM
Replies: 996
Views: 223,759
Posted By GPM
I hear ya! I'm 'sitting on the fence' of some...

I hear ya! I'm 'sitting on the fence' of some mega major lifestyle changes, purchases [or not] pending which way the 'wind blows'.

GM
Forum: DIY Speakers and Subs   10-24-2016, 05:18 PM
Replies: 996
Views: 223,759
Posted By GPM
You're welcome! No problemo, statistically,...

You're welcome!

No problemo, statistically, very few on the audio forums 'have a clue' since harnessing Mother Nature is no trivial pursuit once one moves past a basic sealed or reflex [Helmholtz...
Forum: DIY Speakers and Subs   10-24-2016, 03:13 PM
Replies: 996
Views: 223,759
Posted By GPM
Hmm, we seem to be having a 'failure to...

Hmm, we seem to be having a 'failure to communicate'........

Understood, I was just saying if I wasn't willing to pay for the correct drivers and the TBs were the best 'fit' overall available to...
Forum: DIY Speakers and Subs   10-24-2016, 01:55 PM
Replies: 996
Views: 223,759
Posted By GPM
Well, basically, it's your call as all I can do...

Well, basically, it's your call as all I can do is try to give you as much accurate info as I feel I can for you to make an informed enough decision.

For me personally, if I were choosing based on...
Forum: DIY Speakers and Subs   10-24-2016, 03:37 AM
Replies: 996
Views: 223,759
Posted By GPM
You're welcome! The cab's net volume [Vb] is...

You're welcome!

The cab's net volume [Vb] is acoustically way too large for this driver based on published specs plus it 'wants' to be tuned lower [longer] due to its lower Qts, Fs, so it could...
Forum: DIY Speakers and Subs   10-24-2016, 02:09 AM
Replies: 996
Views: 223,759
Posted By GPM
It's around 58% too big, so will be a bit...

It's around 58% too big, so will be a bit under-damped, but you can EQ it or add a little stuffing if it sounds audibly 'boomy'/'loose'.

GM
Forum: Screens   10-17-2016, 08:05 PM
Replies: 6
Views: 150
Posted By GPM
'BIB' definitely rules [it's one of my mottos on...

'BIB' definitely rules [it's one of my mottos on audio forums], at least up to a point of diminishing returns, but now that I've actually read his Q, even full width [11 ft] isn't as large as could...
Forum: Screens   10-17-2016, 12:07 PM
Replies: 6
Views: 150
Posted By GPM
Greets! Welcome! Short on time ATM, but...

Greets!

Welcome! Short on time ATM, but here's something to keep you occupied in the meantime ;):...
Forum: LCD Flat Panel Great Found Deals!   07-02-2016, 10:34 AM
Replies: 5
Views: 340
Posted By GPM
A pity there's not more stores, there's...

A pity there's not more stores, there's flat/curved 55" OLEDs in-store for $1488 and 55", 65" 4k Panasonics for $499, $799 [assuming sales are nationwide].

GM
Forum: Local HDTV Info and Reception   02-17-2016, 10:10 AM
Replies: 3,577
Views: 429,767
Posted By GPM
Same here......... GM

Same here.........

GM
Forum: HDTV Technical   02-15-2016, 02:16 PM
Replies: 68
Views: 1,142
Posted By GPM
I'm in N.E. Atlanta and have the same PBS problem...

I'm in N.E. Atlanta and have the same PBS problem using a youtube DIY coat hanger antenna in the attic, but found that an ancient twin lead FM antenna tacked to a DIY 'T' square brings it in strong...
Forum: HDTV Technical   02-11-2016, 12:02 AM
Replies: 24
Views: 1,004
Posted By GPM
FWIW, I'm not a member, just now used it no...

FWIW, I'm not a member, just now used it no problem and ~ a month ago switched to Comcast after using AT&T since '96.

GM
Forum: Subwoofers, Bass, and Transducers   02-08-2016, 10:34 AM
Replies: 11
Views: 650
Posted By GPM
+1 on what Bill said WRT weight [mass...

+1 on what Bill said WRT weight [mass loading].......:

Note an Altec table sub as part of an early 'satellite' system:
...
Forum: Cable, Digital Cable - Non-HDTV   01-26-2016, 01:57 AM
Replies: 12
Views: 323
Posted By GPM
Greets! Forgot I'd done this sleepless...

Greets!

Forgot I'd done this sleepless night, wee-wee hour 'lament', so another long, but abbreviated update is that the specialist arrived later in the day, double checked everything, even looked...
Forum: Cable, Digital Cable - Non-HDTV   01-14-2016, 01:32 AM
Replies: 12
Views: 323
Posted By GPM
Interesting! I was browsing the net to see if...

Interesting! I was browsing the net to see if anyone had any thoughts on my new Comcast's super weird wifi connection problem that has resulted in three 'rolling trucks' since last thursday and...
Forum: DIY Speakers and Subs   12-03-2015, 11:26 PM
Replies: 10,245
Views: 937,056
Posted By GPM
No, parallel walls have half WL eigenmodes...

No, parallel walls have half WL eigenmodes [standing waves] same as an open pipe, i.e. have both even and odd harmonics, so the first harmonic [dip] is at half the speed of sound [SoS] or ~1130...
Forum: DIY Speakers and Subs   12-03-2015, 10:43 PM
Replies: 10,245
Views: 937,056
Posted By GPM
This is a conical cone [pipe, horn] resonance, so...

This is a conical cone [pipe, horn] resonance, so the only way to lower it is either electronically as DSL does or add stuffing, which will also roll off its bass output enough to notice.

GM
...
Forum: DIY Speakers and Subs   12-03-2015, 10:17 PM
Replies: 10,245
Views: 937,056
Posted By GPM
Thanks for sharing! :) Can't have too many...

Thanks for sharing! :) Can't have too many measurements, especially in room, though some basic room dims, layout will help, so wondering if there's any parallel wall/whatever dim[s] = ~565 ft/27 Hz =...
Forum: Local HDTV Info and Reception   11-18-2015, 05:45 PM
Replies: 3,577
Views: 429,767
Posted By GPM
It's broadcasting, but breaking up really bad...

It's broadcasting, but breaking up really bad presumably because of the bad weather ATM and since I don't watch any of those stations, my antennas aren't set up to include them, so never do get them...
Forum: DIY Speakers and Subs   11-05-2015, 09:06 AM
Replies: 10,245
Views: 937,056
Posted By GPM
Love the 'sky' and DTS artwork! :D ...

Love the 'sky' and DTS artwork! :D

Interesting, that's some serious delay required for the mains/surrounds, so curious which processor/receiver you're using?

TIA,

GM
Forum: HDTV Technical   10-23-2015, 12:53 PM
Replies: 17
Views: 1,521
Posted By GPM
You're welcome! Right, and for those who...

You're welcome!

Right, and for those who like the industrial 'look' and/or need 'bulletproof' construction due to the locale :eek::...
Forum: HDTV Technical   10-23-2015, 02:08 AM
Replies: 17
Views: 1,521
Posted By GPM
Greets! I was researching roof access...

Greets!

I was researching roof access hatches and this thread was listed, so thought I'd add the current link to Fakro: http://www.fakrousa.com/our-products/offer/egress-window/

Note that a...
Forum: Local HDTV Info and Reception   10-18-2015, 11:54 AM
Replies: 3,577
Views: 429,767
Posted By GPM
I wonder how much longer we'll have much OTA...

I wonder how much longer we'll have much OTA selection: http://www.latimes.com/entertainment/envelope/cotown/la-et-ct-spectrum-auction-20151018-story.html

GM
Forum: DIY Speakers and Subs   10-03-2015, 08:38 PM
Replies: 122
Views: 101,888
Posted By GPM
You’re welcome! Yeah, I get that a lot, but...

You’re welcome!

Yeah, I get that a lot, but have little time for hobbies these days, so ‘throw it out there’ and see what ‘sticks’.

FWIW, all manner of TL/horn, Karlson design [4th, 6th, 8th...
Forum: DIY Speakers and Subs   10-03-2015, 04:23 PM
Replies: 122
Views: 101,888
Posted By GPM
Actually, since it appears to have a constant...

Actually, since it appears to have a constant expansion with its terminus [mouth] being a reduced area duct [vent], its most technically correct moniker would be a tapped ML [mass loaded = vented] TL...
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