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Lab Gruppen FP14000 clone amplifiers - Page 43

post #1261 of 3108
3/1/12 at 3:52pm
Quote:
Originally Posted by whoaru99 View Post

There is a Code provision that allows a 20A breaker on a 15A duplex receptacle but (afaik) that provision isn't extended to 30A breaker on 15A (nor 20A) duplex receptacles.

Should be using something (depending on voltage) like NEMA 5-30, 6-30, or 14-30.

The Amp rating of a breaker is meant to match the size of the wire unless you have runs longer than 60 feet. After 60 feet voltage drop is a problem and the wire should be one size bigger. Breakers are intended to trip before wire gets damaged by over current. Ideally the breaker, the wire and the receptacle should have matched amperage ratings. But if the wire is bigger than the breaker then it reduces voltage drop and should be done for longer runs. You just can never have the breaker rating higher than the wire ampacify for general use. It's safer to have the #10 wire on a 20a breaker unless it trips under startup load. I would never put audio equipment on a 30a breaker unless it tripped a 20.
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post #1262 of 3108
3/1/12 at 6:05pm
I have a pretty good idea of how it goes, that's why I said what I said (and mentioned less voltage drop several posts back). Regardless, a 30A breaker doesn't belong as the overload protection on a circuit with receptacles rated 15A or 20A, even if the cable size is appropriate for 30A and or up-sized to account for voltage drop.

But, whatever, y'all make your own bed to sleep in.
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post #1263 of 3108
3/1/12 at 9:47pm
think this amp is too much power for these cabs?

http://www.yorkville.com/products.as...&cat=38&id=268
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post #1264 of 3108
3/1/12 at 10:05pm
Quote:
Originally Posted by speckled hen View Post

think this amp is too much power for these cabs?

http://www.yorkville.com/products.as...&cat=38&id=268

`
Do you mean can I blow up the U215s? Yes . . . . but why do that when you can just turn down the volume and enjoy the crisp clean sound with gobs of power waiting to be used when needed.
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post #1265 of 3108
3/1/12 at 10:09pm
Thread Starter 
Nobody has measured performance of these amps in the high frequency ranger. I know some of the LG's didn't do well above 8khz.

Either way, you won't need much to power those other speakers, I wouldn't use one of these for it. Maybe the FP10000, but again, haven't seen measurements up top.
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post #1266 of 3108
3/1/12 at 10:15pm
Quote:
Originally Posted by notnyt View Post

Nobody has measured performance of these amps in the high frequency ranger. I know some of the LG's didn't do well above 8khz.

Either way, you won't need much to power those other speakers, I wouldn't use one of these for it. Maybe the FP10000, but again, haven't seen measurements up top.

sooo... these clones are no full-range amps? mainly used to power subs?
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post #1267 of 3108
3/1/12 at 10:18pm
I think you will be fine with a 10Q. Even with the roll off, if it has one, you would still have a Mass amount of power.
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post #1268 of 3108
3/1/12 at 10:22pm
Quote:
Originally Posted by chrapladm View Post

I think you will be fine with a 10Q. Even with the roll off, if it has one, you would still have a Mass amount of power.

anyway you can over-ride the amps built in crossover and use an external crossover? still... 2100 X 4 is plenty of power. i could use the 3rd ch. for a center cbt or another unity 2 15"
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post #1269 of 3108
3/1/12 at 10:24pm
Built in crossover?

NM
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post #1270 of 3108
3/1/12 at 10:26pm
Quote:
Originally Posted by chrapladm View Post

Built in crossover?

NM

the amp has to have some kind of cross-over to process the signal. bandpass, hi lo fs... one cuts high frequency or cuts low.
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post #1271 of 3108
3/1/12 at 10:30pm
Quote:
Originally Posted by notnyt View Post

Nobody has measured performance of these amps in the high frequency ranger. I know some of the LG's didn't do well above 8khz.

Either way, you won't need much to power those other speakers, I wouldn't use one of these for it. Maybe the FP10000, but again, haven't seen measurements up top.

Quote:
Originally Posted by speckled hen View Post

sooo... these clones are no full-range amps? mainly used to power subs?

They are fine full-range. I think these roll-off about -1dB from 5-20khz.

I can't get the pic to load for some reason but you can read about it here: http://soundforums.net/product-revie...sts-1-2-a.html

Quote:
Originally Posted by speckled hen View Post

the amp has to have some kind of cross-over to process the signal. bandpass, hi lo fs... one cuts high frequency or cuts low.

Are you talking about these Lab clones? Cuz if you are, you are mistaken. These have no form of internal crossover.
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post #1272 of 3108
3/1/12 at 10:51pm
Quote:
Originally Posted by speckled hen View Post

the amp has to have some kind of cross-over to process the signal. bandpass, hi lo fs... one cuts high frequency or cuts low.

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post #1273 of 3108
3/1/12 at 11:22pm
Quote:
Originally Posted by Scott Simonian View Post

They are fine full-range. I think these roll-off about -1dB from 5-20khz.

I can't get the pic to load for some reason but you can read about it here: http://soundforums.net/product-revie...sts-1-2-a.html



Are you talking about these Lab clones? Cuz if you are, you are mistaken. These have no form of internal crossover.

thats crazy... no hp or lp or full range?
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post #1274 of 3108
3/1/12 at 11:48pm
SVR.......almost cried laughing.

I didn't want to argue so I said NV when it was posted.
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post #1275 of 3108
3/2/12 at 12:04am
Quote:
Originally Posted by chrapladm View Post

SVR.......almost cried laughing.

I didn't want to argue so I said NV when it was posted.

guess what buddy... an amp has to have some kind of signal processor. it doesnt just produce power. that being said... from the previous post, sounds to me like you can just add an external crossover/eq and meet the requirements of any type of application... sub, full range, low pass or high pass
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post #1276 of 3108
3/2/12 at 12:59am
Quote:
Originally Posted by speckled hen View Post

guess what buddy... an amp has to have some kind of signal processor. it doesnt just produce power.

Not so. You can only say that about plate amps. Normal pro power amps just deliver power. It's true that more and more pro amps are being offered with DSP but that's a recent trend.
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post #1277 of 3108
3/2/12 at 1:32am
Quote:
Originally Posted by Antripodean View Post

Not so. You can only say that about plate amps. Normal pro power amps just deliver power. It's true that more and more pro amps are being offered with DSP but that's a recent trend.


ok..... soo, why would this particular amp not be suitable for a full range active p.a. monitor?



several posters that it want meet up with the drivers frequency response. ok... if it's just providing clean power... no dsp... where is the signal process coming from if there is no crossover/eq on the amp? doesnt make since. sounds to me, al you have to do is add a crossover in the mix or a preamp.

http://www.yorkville.com/products.as...&cat=38&id=268
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post #1278 of 3108
3/2/12 at 1:40am
Quote:
Originally Posted by speckled hen View Post

guess what buddy... an amp has to have some kind of signal processor. it doesnt just produce power. that being said... from the previous post, sounds to me like you can just add an external crossover/eq and meet the requirements of any type of application... sub, full range, low pass or high pass

Hmmmmm, let me guess... youve spent a lot of time on car audio forums
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post #1279 of 3108
3/2/12 at 2:23am
Quote:
Originally Posted by omegaslast View Post

Hmmmmm, let me guess... youve spent a lot of time on car audio forums


actually, no. i own a car audio shop. thanx for the smart ass response. i really appreciate it
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post #1280 of 3108
3/2/12 at 2:26am
Your not going to make too many friends with the manner your comments are coming across.
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post #1281 of 3108
3/2/12 at 2:42am
Quote:
Originally Posted by chrapladm View Post

Your not going to make too many friends with the manner your comments are coming across.

fine with me
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post #1282 of 3108
3/2/12 at 5:13am
Quote:
Originally Posted by speckled hen View Post

several posters that it want meet up with the drivers frequency response. ok... if it's just providing clean power... no dsp... where is the signal process coming from if there is no crossover/eq on the amp? doesnt make since. sounds to me, al you have to do is add a crossover in the mix or a preamp.

http://www.yorkville.com/products.as...&cat=38&id=268

You're putting a full range signal into a speaker with internal crossover. You don't need any external crossover unless you're going to run that speaker over a sub, or perhaps bi-amp the speaker (if that's possible on that model I don't know). DSP, EQ, etc. would be outboard too.
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post #1283 of 3108
3/2/12 at 5:39am
SH is the same guy telling people to cut up their floor to install subs

Finally got my speakeron connectors, although no idea where my miniDSP is I'm going to hook it all up and just EQ with XT32 this weekend.
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post #1284 of 3108
3/2/12 at 5:42am
Madpoet what are you using the amps for? Sorry if you stated this already.
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post #1285 of 3108
3/2/12 at 6:28am
Couldnt any one of you 10000Q owners and an omni mic setup take some measurements to help appease the crowd. I too am interested in the resulting numbers for full range use..
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post #1286 of 3108
3/2/12 at 7:15am
Quote:
Originally Posted by Jason kiDD View Post

Couldnt any one of you 10000Q owners and an omni mic setup take some measurements to help appease the crowd. I too am interested in the resulting numbers for full range use..

I guess I could run my 3 front mains on my 10000Q and see how it sounds. Of course this will mean I will only power one sub with it.
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post #1287 of 3108
3/2/12 at 7:18am
Quote:
Originally Posted by chrapladm View Post

Madpoet what are you using the amps for? Sorry if you stated this already.

I am using 3 channels on a 10000Q for 3 Chase Home THeater 18.2s.
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post #1288 of 3108
3/2/12 at 8:45am
Quote:
Originally Posted by MKtheater View Post

I guess I could run my 3 front mains on my 10000Q and see how it sounds. Of course this will mean I will only power one sub with it.

Just as a quick test to get an idea of how it does on full range. Of course it will depend on the room and your drivers as well. But just wanna see some numbers to get a general idea.. No processing of course..
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post #1289 of 3108
3/2/12 at 8:52am
Quote:
Originally Posted by speckled hen View Post


guess what buddy... an amp has to have some kind of signal processor. it doesnt just produce power. that being said... from the previous post, sounds to me like you can just add an external crossover/eq and meet the requirements of any type of application... sub, full range, low pass or high pass

Nope.

Some amps have a natural roll off due to their design NOT due to any signal processing. Want to learn about amp design go read the stuff Nelson pass is writing about on diyaudio.

No amp has a flat response from 0hz-infinite hz. And due to no physical components being perfect either there can be ripples in the frequency response. There are arguments on the audibility of lots of these things. But that being said a clone probably isn't going to be all that great run up high.

Also there are two kinds of signal processing. Analog and digital. Amps only include analog sp when it's to protect from dc voltage or ultrasonic noise. That sp happens outside the audible range and has no impact on what you will hear. Dsp is becoming more common but it has to be explicitly states that the amp has it.

In other words the Frequency response of an amp is due to design and component used not some screwy signal processing conspiracy.

Also there are experts here and lots of the guys with high posts counts can be called near experts or in fact experts. And you will see the usual players being asked for advice and helping people an providing info. And rule 12 of the internet - lurk moar! Lots of the guys know more then you so instead of trying to school us just sit back and listen. You've already demonstrated ignorance so most people here won't take you seriously until you show some respect and start to learn some of te FACTS of sound reproduction instead of spouting off nonsense that has most of us laughing at you.

Matt
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post #1290 of 3108
3/2/12 at 10:20am
Quote:
Originally Posted by Steve_Vai_rules View Post

Nope.

Some amps have a natural roll off due to their design NOT due to any signal processing. Want to learn about amp design go read the stuff Nelson pass is writing about on diyaudio.

No amp has a flat response from 0hz-infinite hz. And due to no physical components being perfect either there can be ripples in the frequency response. There are arguments on the audibility of lots of these things. But that being said a clone probably isn't going to be all that great run up high.

Also there are two kinds of signal processing. Analog and digital. Amps only include analog sp when it's to protect from dc voltage or ultrasonic noise. That sp happens outside the audible range and has no impact on what you will hear. Dsp is becoming more common but it has to be explicitly states that the amp has it.

In other words the Frequency response of an amp is due to design and component used not some screwy signal processing conspiracy.

Also there are experts here and lots of the guys with high posts counts can be called near experts or in fact experts. And you will see the usual players being asked for advice and helping people an providing info. And rule 12 of the internet - lurk moar! Lots of the guys know more then you so instead of trying to school us just sit back and listen. You've already demonstrated ignorance so most people here won't take you seriously until you show some respect and start to learn some of te FACTS of sound reproduction instead of spouting off nonsense that has most of us laughing at you.

Matt


sorry... i like to drink and, i want one of these amps to run some p.a. monitors. looks like im gonna have to look elsewhere
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