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View Full Version : 4-16 ohm... wtf?



JL Audio
02-27-2011, 12:30 PM
bought some bullet tweets this past week so i could apply a coupon to an order for mids, anyhow all specs on them list them as 4-16 ohm.. wtf is up with this? can anyone explain? im assuming their 16 ohm but wanted to make sure before deciding to find a small amp to power them.

said tweets:
Amazon.com: Pyle-Pro PDBT45 400 Watt 1.75-inch Titanium Bullet Super Tweeter: Electronics (http://www.amazon.com/Pyle-Pro-PDBT45-1-75-inch-Titanium-Tweeter/dp/B0013CC4LM)

JL Audio
02-27-2011, 01:18 PM
am i going to have to ask dr. subwoofer **** it...

RAM_Designs
02-27-2011, 01:20 PM
Beats me, I'd look up the model number elsewhere and see what you get.

-01limited-
02-27-2011, 01:23 PM
maybe its 8 ohms, so The final load can be from 4-16 ohms with the two wired up together?

or you get what I'm saying,

JL Audio
02-27-2011, 01:38 PM
maybe its 8 ohms, so The final load can be from 4-16 ohms with the two wired up together?

or you get what I'm saying,

that seems like the best answer i've gotten lol, never thought about that. I was just like wtf when I saw it, reminded me of those old infinity subs you could switch impedance on. Sometimes the answer is right in front of us apparently.

-01limited-
02-27-2011, 01:41 PM
that seems like the best answer i've gotten lol, never thought about that. I was just like wtf when I saw it, reminded me of those old infinity subs you could switch impedance on. Sometimes the answer is right in front of us apparently.

Well I looked em up on pyles site and it said 4~16 ohm, so I just guess they can run anywhere in between those ohm loads. :D

JL Audio
02-27-2011, 01:43 PM
Well I looked em up on pyles site and it said 4~16 ohm, so I just guess they can run anywhere in between those ohm loads. :D

lol I may have to be emailing them about this. Gotta run my tweets yo.

dragnix
02-27-2011, 01:45 PM
I think your first mistake was purchasing Pyle

RAM_Designs
02-27-2011, 01:46 PM
lol I may have to be emailing them about this. Gotta run my tweets yo.

I'd rather get the Vifa semi horn-loaded tweets from Madisound if you want something with good efficiency and plan on crossing them above 3khz...they won't take up nearly as much space, and they're cheaper. And you know the ohm load. :D

https://www.madisound.com/store/product_info.php?cPath=45_229_324&products_id=8354

RAM_Designs
02-27-2011, 01:48 PM
Or even these with the truncated flange so you can fit them right next to each other...over 1/2 off right now.

https://www.madisound.com/store/product_info.php?cPath=45_229_324&products_id=8264

dragnix
02-27-2011, 02:06 PM
doubt he wants to cross them at 3khz if he's looking at bullet tweeters

jdawg
02-27-2011, 02:54 PM
it doesnt really matter, thats why they list them like that, probably pro audio horns or bullets, no matter how you wire them they will be loud as ***

jdawg
02-27-2011, 03:01 PM
you need to understand how nominal impedance works, a speaker isnt going to be (ex) 4 ohms across the board at any given frequency

RAM_Designs
02-27-2011, 03:03 PM
doubt he wants to cross them at 3khz if he's looking at bullet tweeters

I figured so, I was just saying those would work so long as he wasn't going to cross lower than 3khz.

Haunz
02-27-2011, 03:28 PM
They are 4ohm tweeters... :fyi:


I think the 4-16ohm reference is that your amp needs to be 4 - 16ohm stable.. if you look at the back of an old reciever or PA amp they often say 8-16ohm or 4-8ohm in reference to the speaker load they can handle...

Brian_smith06
02-27-2011, 03:42 PM
I think they are bipolar!

smgreen20
02-27-2011, 09:57 PM
Could also be what their impedance rise is within.

JL Audio
02-27-2011, 10:36 PM
They are 4ohm tweeters... :fyi:


I think the 4-16ohm reference is that your amp needs to be 4 - 16ohm stable.. if you look at the back of an old reciever or PA amp they often say 8-16ohm or 4-8ohm in reference to the speaker load they can handle...

got ya, didn't think of that either. Thanks for the help there.

Also guys ram, i appreciate you offering alternative but im just looking for loud budget, most you guys know i've owned about all that is to be owned at one time or another lol i'm just going for a more budget/loud setup this year... maybe more SQ next year... maybe.

VWBobby
03-01-2011, 10:30 AM
Look at this awesome 1-star review of those tweeters on Amazon:
Amazon.com: Customer Reviews: Pyle-Pro PDBT45 400 Watt 1.75-inch Titanium Bullet Super Tweeter (http://www.amazon.com/Pyle-Pro-PDBT45-1-75-inch-Titanium-Tweeter/product-reviews/B0013CC4LM/ref=dp_top_cm_cr_acr_txt?ie=UTF8&showViewpoints=1)

I would be afraid, very afraid. Go with the tweeters that RAM suggested or another good quality set of tweeters from SoundStream, PG, Kicker, Cadence, etc.

audioholic
03-01-2011, 11:57 AM
maybe its 8 ohms, so The final load can be from 4-16 ohms with the two wired up together?

or you get what I'm saying,

Except you wouldn't wire them up together, as that would make them mono. Unless you were wiring up multiple pairs, but that would be the exception to the rule not the norm, and I cant imagine why a manufacturer would base a spec off the minority install type. But I cant imagine them listing the impedance as variable like they did either, so who knows.

Every speaker has a nominal impedance. It's DC resistance with the coil/suspension in a resting state. "Impedance: 4-16 ohms" is a useless spec without some sort of explanation to go along with it.

brynm
03-01-2011, 12:31 PM
Dual 8 ohm voice coil tweets!!!!!

JL Audio
03-01-2011, 12:51 PM
Look at this awesome 1-star review of those tweeters on Amazon:
Amazon.com: Customer Reviews: Pyle-Pro PDBT45 400 Watt 1.75-inch Titanium Bullet Super Tweeter (http://www.amazon.com/Pyle-Pro-PDBT45-1-75-inch-Titanium-Tweeter/product-reviews/B0013CC4LM/ref=dp_top_cm_cr_acr_txt?ie=UTF8&showViewpoints=1)

I would be afraid, very afraid. Go with the tweeters that RAM suggested or another good quality set of tweeters from SoundStream, PG, Kicker, Cadence, etc.

I pay those reviews very little attention. Already got them for cheap anyhow... Got them in yesterday but didn't get to check them yet. Will when I get home

VWBobby
03-01-2011, 01:18 PM
...

-01limited-
03-01-2011, 01:33 PM
Except you wouldn't wire them up together, as that would make them mono. Unless you were wiring up multiple pairs, but that would be the exception to the rule not the norm, and I cant imagine why a manufacturer would base a spec off the minority install type. But I cant imagine them listing the impedance as variable like they did either, so who knows.

Every speaker has a nominal impedance. It's DC resistance with the coil/suspension in a resting state. "Impedance: 4-16 ohms" is a useless spec without some sort of explanation to go along with it.

Just trying to find logic within the madness.

But props on the good explinations in various threads. I got in some good reading today:thumbsup: