AMP POWER?
500 Watt CAFz'r
Joined: Nov 2002
Posts: 519
i am having trouble wrapping my head around this.
islandphile cleared it up a bit, if in fact he was accurate, but lets say i get this scenario posed in a sales situation, which i am often in, and i need to explain this in easily understood terms. how do i do this?
or in other words, whats the right answer and tell me in less than 20 words where no word exceeds 10 characters.
islandphile cleared it up a bit, if in fact he was accurate, but lets say i get this scenario posed in a sales situation, which i am often in, and i need to explain this in easily understood terms. how do i do this?
or in other words, whats the right answer and tell me in less than 20 words where no word exceeds 10 characters.
1000 Watt CAFz'r
Joined: Oct 2003
Posts: 1,783
Islandphile,
Here are the options on my VRx2.400
ACB-1 (Class A Kit)
2-TRM 6.2 (62mm endcaps)
MAC2 (Cooling fan kit)
HL12 (12db/oct X.O.)
PC36 (360 degree phase control)
I'm still in the midst of installing everything properly. My impressions of how everything sounds is really preliminary. I can hear a slight difference with the ACB-1 ingaged. But, until I get my front stage properly setup, I won't be able to fully appreciate it.
Adam
Here are the options on my VRx2.400
ACB-1 (Class A Kit)
2-TRM 6.2 (62mm endcaps)
MAC2 (Cooling fan kit)
HL12 (12db/oct X.O.)
PC36 (360 degree phase control)
I'm still in the midst of installing everything properly. My impressions of how everything sounds is really preliminary. I can hear a slight difference with the ACB-1 ingaged. But, until I get my front stage properly setup, I won't be able to fully appreciate it.
Adam
Guest
Posts: n/a
^ lol - Mr Patient over here [img]tongue.gif[/img]
This is an open thread IMO and anyone can add anything. I am going to counter something I feel Islandphile has misstated but who says I am right [img]graemlins/dunno.gif[/img]
"Now that 100 Watts/Channel is "shared" between the tweet and woof....say each woof gets 80 Watts & tweet 20 Watts (or split as determined by the design of the x-over). All 200 Watts are useable"
Why would the woofer and tweeter get diminished power? A passive xover divides only the frequency spectrum. True it does this by adding resistance to the circuit above or below whatever the cutoff frequency is but within the pass band it theoretically is invisible.
So if you had just the woofer for example and put a 4000hz lowpass on it, the amp should see only the woofer up to ~4000hz and then the passive starts becoming resistive above that. So up to 4khz the woofer should get full power from the amp.
This is true for the tweeter as well but working the other way.
Make sense?
This is an open thread IMO and anyone can add anything. I am going to counter something I feel Islandphile has misstated but who says I am right [img]graemlins/dunno.gif[/img]
"Now that 100 Watts/Channel is "shared" between the tweet and woof....say each woof gets 80 Watts & tweet 20 Watts (or split as determined by the design of the x-over). All 200 Watts are useable"
Why would the woofer and tweeter get diminished power? A passive xover divides only the frequency spectrum. True it does this by adding resistance to the circuit above or below whatever the cutoff frequency is but within the pass band it theoretically is invisible.
So if you had just the woofer for example and put a 4000hz lowpass on it, the amp should see only the woofer up to ~4000hz and then the passive starts becoming resistive above that. So up to 4khz the woofer should get full power from the amp.
This is true for the tweeter as well but working the other way.
Make sense?
1000 Watt CAFz'r
Joined: Sep 2001
Posts: 1,120
Hmmm, I han't thought of it like that... makes sense.
Would be interesting to see some measurements with a meter to figure out the amp output and then figure out how much power the tweet and woof each get as a percentage of the amp output. This would probably be different for every comp set. The insertation loss of the x-over would come into play but if it was figured out as a percentage it would be relevant.
Would be interesting to see some measurements with a meter to figure out the amp output and then figure out how much power the tweet and woof each get as a percentage of the amp output. This would probably be different for every comp set. The insertation loss of the x-over would come into play but if it was figured out as a percentage it would be relevant.
1000 Watt CAFz'r
Joined: Oct 2003
Posts: 1,783
I'm just going to state how we could do this test.
Get a Fluke multimeter with an amper-clamp(measures amperage), and take readings of voltage and amperage before and after the passive X.O. Then of course you can work out the wattage.
The best source for this type of test is PINK noise.
Adam
Get a Fluke multimeter with an amper-clamp(measures amperage), and take readings of voltage and amperage before and after the passive X.O. Then of course you can work out the wattage.
The best source for this type of test is PINK noise.
Adam
1000 Watt CAFz'r
Joined: Sep 2001
Posts: 1,120
Yeah I thought PINK noise as well... but remember that most passive x-overs have a resistor in-line w/the tweet so the Voltage and Amperage would have to be measured keeping that in mind ...and there could be notch filters as well in the midrange to account for the characteristics or mounting option of the woof.... Gets a bit complicated when the x-over needs to be excluded in this comparison VS. an active system. [img]graemlins/dunno.gif[/img]
500 Watt CAFz'r
Joined: Nov 2002
Posts: 519
i think discussing this stuff like you guys are doing is the only practical way of applying the knowledge... hahha
what else cna you really do with it??
how many customers are actually knowledgeble enough to be concerned with that kind of thing whats more is that these are not the kind of customers that are any businesses bread and butter, the B&B are the 18-25 out of school in to work guys who havent settled down yet and want big bass... dont think they would understand this stuff either...
frig, my eyes are going funn trying to read it..
but please... continue
what else cna you really do with it??
how many customers are actually knowledgeble enough to be concerned with that kind of thing whats more is that these are not the kind of customers that are any businesses bread and butter, the B&B are the 18-25 out of school in to work guys who havent settled down yet and want big bass... dont think they would understand this stuff either...
frig, my eyes are going funn trying to read it..
but please... continue
