JBL Master Reference Monitor

[Valentin]

Lets see if if there is any news at NAB show

JBLPRO has a stand probaly nothing new to say

[sunnysal]

Exciting news from JBL, both the horn and the drivers are real innovations. I am looking forward to hearing more about people´s reactions to the sound once they hit the marketplace. Great thread! warm regards from sunny El Salvador, Tony

[Dave_72]

Exciting news from JBL, both the horn and the drivers are real innovations. I am looking forward to hearing more about people´s reactions to the sound once they hit the marketplace. Great thread! warm regards from sunny El Salvador, Tony

I do too.

[herve M]

New info from manual users :
"
The M2 contains no internal crossover network;
it must be used with BSS OMNIDRIVE HD Digital Signature processing to provide proper integration of the speaker’s low-frequency and high-frequency transducers. The following Crown power amplifiers incorporate BSS OMNIDRIVE HD DSP and are specified for use in the M2 System::"

http://www.jblpro.com/catalog/suppor...2003&doctype=3

[martin_wu99]

New info from manual users :
"
The M2 contains no internal crossover network;
it must be used with BSS OMNIDRIVE HD Digital Signature processing to provide proper integration of the speaker’s low-frequency and high-frequency transducers. The following Crown power amplifiers incorporate BSS OMNIDRIVE HD DSP and are specified for use in the M2 System::"

http://www.jblpro.com/catalog/suppor...2003&doctype=3

According to what you said,M2 is a pro gear and hard to use in home

[Mctwins]

Yeah...real speakers don't need any stinking x-overs

As I suspected

Nice!

[Mctwins]

According to what you said,M2 is a pro gear and hard to use in home

Absolutely not hard at all to use at home. I myself use PRX635 and 618S-XLF and my twinbrother(Bobecca) use Cinema Screen Arrays, works perfectly

[4313B]

According to what you said,M2 is a pro gear and hard to use in home

Good grief.

[martin_wu99]

Good grief.

Pls speaking some technical things,JBL expert

[martin_wu99]

Absolutely not hard at all to use at home. I myself use PRX635 and 618S-XLF and my twinbrother(Bobecca) use Cinema Screen Arrays, works perfectly

Not everyone like you,they just want home-friendly use

[1audiohack]

Not everyone like you,they just want home-friendly use

That's why there is Harman Pro, and Harman everything else.

[wsilva]

Not everyone like you,they just want home-friendly use

Not making any friends here with some of your statements.

[martin_wu99]

Not making any friends here with some of your statements.

I am very sorry about my poor English,i just mean that he has ablity to use pro gear

[Lee in Montreal]

Not having an internal passive crossover is not for the majority of "idiophiles" but a lot of us prefer it this way. Not getting caught with a specific sound, but having the ability to tailor it to your own taste and environement. This DIY is what maks JBL Pro equipment shine. Buying it is only the beginning of a long experimentation journey. I wish more speaker systems came with their own DSP.

[ivica]

Not having an internal passive crossover is not for the majority of "idiophiles" but a lot of us prefer it this way. Not getting caught with a specific sound, but having the ability to tailor it to your own taste and environement. This DIY is what maks JBL Pro equipment shine. Buying it is only the beginning of a long experimentation journey. I wish more speaker systems came with their own DSP.

Hi,



Talking about the internal passive network and active one, there are some think that to be aware of. If our sound source is , say, CD-player with 1V output voltage corresponding to the maximal signal value, and if such signal has corresponded to the 15-bits ( about 32000) value, and for easy calculation such signal produce 120dB-SPL, then with the passive and active networks we can get almost the same results.

But the problems can be more complex if we have decided to put digital network AFTER pre-amp, and if we decide to reduce the level ( by potentiometer) to 96dB-SPL ( -24dB), then we would reduce the amplitude 16-TIMES, so we would operate with equivalent 11-bits amplitude to the rest of the system. so signal-to-noise level would be reduced by mentioned 24dB using digital network. With proper passive one (or even low noise analog realized types), such reduction into the signal-noise ratio would not happen.

But some time proper passive network would be very difficult to realize especially in order to compensate 'spiky' driver-horn response, as it seems to me is the case with M2 HF horn-driver combo ( deep notches about: 9kHz, 12kHz, 16kHz).

http://www.audioheritage.org/vbullet...l=1#post343108


It would be nice if some "independent" measurements can be shown of M2 HF horn-driver response WITHOUT DSP compensation.



Regards

Ivica