View Full Version : 4430 ..how many watt's..??

"Duke" Spinner
07-19-2005, 08:33 AM
using Crowns calculator...

to get 105 dB @ 15'...

i need 650 watt's ....

i'll bet no one here is running that ....

whatcha got ..???.....:crying:

07-19-2005, 08:35 AM
Linky to calculator?


For my 4628's to hit 105db @ 3m with 3db of amp headroom, 90w.

Ha ha.

07-19-2005, 10:10 AM
whatcha got ..???.....:crying:My hearing, thankfully.

[Most of it, anyway.... :p ]

Don Mascali
07-19-2005, 11:41 AM
I have a cloned 4430s plus additional 18"LF, 2-12"MF and a 2404VHF per side.

They are tri-amped and have 700wpc on the 18s, 700wpc on the 2235s, 350wpc on the 2-12"MFs and 75wpc on the HF/VHF horns.

Power and SPL I've got http://audioheritage.csdco.com/vbulletin/images/smilies/biggrin.gif . Still tweeking after all these years, but it keeps me off the streets.

It is way over kill but too much is never enough.

07-19-2005, 01:23 PM
The JBL spec sheet for 4430's says 300 wpc pink noise. Taking into cosideration that an under powered amp will more than likely burn up your HF drivers when listening at loud volume levels, due to clipping (distortion), it's better to have an amp that has plenty of headroom above rated power....and most manufacturers including JBL recommend 3-6 dB amp headroom. What does this mean? Every increase of 3dB is equivalent to doubling the power. So...Since the 4430 is rated at 300 watts pink noise you can use an amp that has anywhere from 300 to 1200 watts per channel to drive them. Clean power is the key to great dynamics and transient response....it's not the purpose to fry your ears, although some might... given the opportunity.

I think you'd be way happy with 300-400 watts.



07-19-2005, 02:20 PM
I think you'd be way happy with 300-400 watts.



I agree... I used 200 to 400 watts bi-amped to each, and 400 watts when using the internal crossover. It's not the volumn you want to go for ( we all want to keep our hearing), but the headroom.

07-19-2005, 02:24 PM
Ok, let me be more clear. When Bi-amping I used 200 watts to the horn and 400 watts to the "bass"

07-19-2005, 02:49 PM
When biamping (which is nearly always, now), I use amps 75W (per channel) to horns and 150W to bass. 6200 Series amps probably have twice that in built-in headroom. Driving them with consumer level CD players, it's probably not possible to get them to even half their ratings.

That calculator says I'm pushing about 5 watts here. :p

Mr. Widget's running his vented Sub1500's in stereo on one of my 6260's and says he's never seen the clip light come on. That'd be 300W per channel into 4 Ohms.

I think I once saw the clip lights, showin' off how a pair of B460's could rattle the ceiling with subsonics. This contingent does not subscribe to mega-amp mania.... ;)

"Duke" Spinner
07-19-2005, 03:05 PM
well ...i run 1-5watts w/ my Klipsch speakers w/ 225/ ch.

my L-7's want more juice ..10-30 watts ...have sometimes driven amp to clip, tryin to keep up with the Cornwalls

i just want adaquate headroom ...

07-19-2005, 03:16 PM
Just to add some more numbers here.

when I had my MAC 402 hooked up, comfortable listening was around 0.4 to 1 watt

4 watts was ready pushing it for long term listening ( in my room, you're milage may vary). I also had a MAC 75 watt receiver hooked up and it was about the same ( couldn't do the big bass stuff tho)

07-19-2005, 05:48 PM

! use

75 watts for tweeters
75 watts for upper mids
75 watts for lower mids
360 watts for bass
400 watts for subs

So about a 1000 wats per channel

And only use about .5 watts at normal listening level. the lights on the DSC 280 won't even come

Don Mascali
07-19-2005, 06:04 PM
And only use about .5 watts at normal listening level. the lights on the DSC 280 won't even come

I agree, even though my system is capable of physical damage to the body I seldom listen above 90-95db avg for any length of time.

It is the headroom that makes the difference.

I have a set of L100t3s in my living room and thought the bass sounded "tubby". When I moved one of my Yamaha P5000 amps (500wpc) up there, those 2214s started making music.

Get more than you think you need, your speakers will thank you for it.

I have a 1990 Corvette that will do 160mph. that doesn't mean I drive that speed often.http://audioheritage.org/vbulletin/images/smilies/biggrin.gif

07-19-2005, 06:28 PM
Hello Duke

You doing HT with the magic 105dB number??? That the THX spec for minimum max SPL on peaks?? Remember you have a pair so subtract 3dB or 1/2 what the calculator is giving you. If you are going HT you also have a center channel which does most of the work. 3-400 watts should be more than enough.


07-19-2005, 06:45 PM
Yeah most are you know one for inside??


That's the one I use.


07-19-2005, 08:04 PM
Well, as a new member of the 1KW per channel club.

I just want to say thanks for the tracking down that calculator.
Now I know just how dangerous my new system really is.

07-19-2005, 09:07 PM
I would advise that for the original speaker mentioned a 4430, a nice 500 watt amp would be the best bet. Of course any amp 200 watts or better is going to be enough to produce decent listening levels and beyond if needed. But the more power if used sensibly would provide more head room and better control over the drivers. this would be a big benefit. The peaks can be demanding so having the power to handle it with out clipping is the ticket....IMO

"Duke" Spinner
07-20-2005, 06:13 AM
no HT here ...

strictly 2 channel

just lookin' to buy enuff watts for good bass control..

a too small amp usually sounds "boomy"

"Duke" Spinner
07-30-2005, 09:58 AM
i guess i gotta get a SPL meter ....

i've run both my 225 wrms Crowns to clipping, to get a comfortable, decently loud listening level

both horns are set flat
both woofers sound fine, Lotsa low end Definition ..!

just not a lot of volume

i guess loosing the 7 db efficiency from my Altec/ Klipsch speakers....
.............really hurt's ..!

i have been runnin' Model 19's, Twin Chorus 2's ( 106 dB together in parallel ) 'n Cornwalls

4430's absolutely KILL the Klipsch in Low end Definition ....

are a nice adjunct to the 19's..a very fine speaker in it's own right, not as much Slam as the 4430's.... but Sweet Altec Mid's....:cheers:

i'll be lookin' for the delivery of my new crown K-2 next week ....:(

Mr. Widget
07-30-2005, 10:23 AM
Duke... sounds like you need to upgrade to the 4435... maybe you even need the 4355.... If you are using that kind of power you like it loud.

When pushed, the 4435 will have a better bottom while the 4355 will sound less stained up top.


07-30-2005, 10:34 AM
How big is your room??? Seems like a decent amount of power.


"Duke" Spinner
07-30-2005, 11:20 AM
i Really need to get a SPL meter.....

i am listening to them right now, pleasent level, but nothing you can't talk over with a raised voice

well, i may like my jazz louder than most, but i don't abuse my ears (much)

surprised i can still hear 15k after being in bands 25 years ...i wore ear plugs alot
same for skeet ...

i'm just spoiled by the 4 Chorus 2's ...

i may be clipping the input of the power amp .. the 4430's of course @8 ohm

don't draw the power from the amp, like parallel chorus2's

4 ohms, they really bark

101dB/watt/meter > to 4 ohm +3dB > to 2 speakers +3dB = aprox 106- 7 dB/watt/meter

"Duke" Spinner
07-30-2005, 11:23 AM
guess i outta get out a voltmeter , too, and see what i got ....

"Duke" Spinner
07-30-2005, 11:31 AM
4-5 vac...at the speaker

i'm clipping the Input of the power amp is whats goin' on

my preamp can deliver 7 volts out ...

dueto the 8 ohm/ 93 dB sensitivity, i'm driven the input of the power amp too hard..

to gt the probably 105 dB i'm evidently used to it seems ...

jeez ...

it don't seem like it was that loud before ....:D

"Duke" Spinner
07-30-2005, 11:34 AM

not very big ....:(

12 X 20

K-2's commin' .....
that'll teach these 4430's a lesson .....;)

07-30-2005, 12:34 PM
i Really need to get a SPL meter.....
Radio Shack. $60. Do it, TODAY....

[Okay, okay, tomorrow, then.... :p ]

"Duke" Spinner
07-30-2005, 12:58 PM
well ...

i have been lookin'

hoping to get something a bit better than the Rat meter

been outbid every time ...

i see Behringer makes an attractive new model... $55

looks good ..of course, it's the same cheap chinese crap as the Rat Meter, tho ...

07-30-2005, 06:06 PM
If you talked this way on the Klipsch forum they would be givin' you a spankin'!:D

Bruce aka Marvel

"Duke" Spinner
07-30-2005, 07:22 PM
Exposed, I am .......:o:

well, ya know, Marvel .....

Klipsch can rock'nroll ....

but the Real Speakers ...

well, they're made by the Lansing fellows .....:)

"Duke" Spinner
07-31-2005, 08:51 AM
Soooooo...Mr. Marvel...

why are you Fishin' around over here, anyways ....:)

most of the Klipsch forum guys ...aren't real technical ...;)

07-31-2005, 02:04 PM
Other than my little 4311s, I would love to get/build some other speakers with JBL components. You notice how several of the Klipsch guys upgrade their drivers to JBL/Altec? Like putting an 811B horn in the Belle, or replacing the T35 with 2405s?

That's the ticket!

"Duke" Spinner
07-31-2005, 03:53 PM
Hi, Bruce ..

4311 .....

what can you say ..?? the "Studio Standard"

if you can't mix something on them, you don't belong behind the board ..
i don't think there's an Engineer that doesn't understand the 4311/12/13 sound.......

you kinda cut short my question as to what monitors you used in your studio ....you did .

i gotta say ...

these new 4430's ......


easily best anything i have ever had ....

lotsa Klipsch at Home, Altec at home, JBL l-7, l-36 at home

JBL at Work .....:D

just ... kinda Power Hungry ....:o:

stephane RAME
08-01-2005, 10:22 PM
for my 4430

2235h = 375w - BGW 750 G
2426H + 2344 = 90w - CROWN D150 S2

DBX DRIVERACK PA = 1 KHz/24 Db + 10 KHz/24 Db

Tweeter 2405H = 40w - CROWN D75