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Old 22nd January 2006, 10:51 PM   #11
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"The unbeatable sound system, vastly superior quality of reproduction...guaranteed!!!"

come on you got to be joking.....
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Old 22nd January 2006, 11:50 PM   #12
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Hi destroyer X,

I must be priveleged to have a wife that LOVES big speakers with plenty bass GRUNT! And she's happy for them to take pride of place in our living room.

I designed a simple commercial PA 2/3 way active crossover back in 1975, using TL081's tunable by pots (12 dB/octave) with an 18 dB subsonic filter and level adjustments.

My computer's not recognizing the scanner on this session or I'd post it.

It was a huge seller back then for big band PA's /Theatres and Discos.

Cheers,
Greg
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Old 23rd January 2006, 12:06 AM   #13
anatech is offline anatech  Canada
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Hi destroyer X,
I think you are getting at actively crossed over multi amp systems directly driving each speaker. If that's it - yes! Vastly superiour to passive crossovers.

This is the only way high power systems work without killing the tweeters and mids. Sometimes DJ's think the peak lights are signal indicator lights !

-Chris
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Old 23rd January 2006, 12:16 AM   #14
Eva is offline Eva  Spain
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Quote:
Originally posted by anatech
Sometimes DJ's think the peak lights are signal indicator lights !

-Chris
How right you are...
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Old 23rd January 2006, 12:24 AM   #15
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Hi Anatech i know what you mean, have you ever listened a real
wideband class-a pwr amp driving a hq conventional spk system
no you havent!, if that was the case Musical fidelity would be making active spks not stereo pwr amps

cheers mate!
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Old 23rd January 2006, 12:36 AM   #16
anatech is offline anatech  Canada
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Hi mastertech,
Yes .... I ...... have. Musical Fidelity had trouble keeping their amps in one piece.

Multi amp systems with no active crossovers (properly designed) will KILL normal systems. No question. They can apply full damping on each driver while the phase angles are controlled. The high end audio version is expensive well beyond what normal earthlings can afford.

A passive crossover is an "it works - sort of" solution compared to the active version.

So, I have no idea what you classify as wide band. I don't know why you are stuck on class A either, but whatever makes you happy. I've heard most of what was out there, on most speaker systems. Most of the amps I've worked on amplify in the low RF region. You know, 200~400 KHz. That sounds like wide band to me.

-Chris
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Old 23rd January 2006, 12:46 AM   #17
awpagan is offline awpagan  Australia
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Quote:
Originally posted by mastertech
Hi Anatech i know what you mean, have you ever listened a real
wideband class-a pwr amp driving a hq conventional spk system
no you havent!, if that was the case Musical fidelity would be making active spks not stereo pwr amps

cheers mate!

don't know about musical fidelty.
but Meridan do, maybe meridan don't hnow what they are doing?

allan

ps full range speaker?
large speaker for lows mids, compensate for highs
smaller speaker for mids and high, compensate for lows.
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Old 23rd January 2006, 01:00 AM   #18
lineup is offline lineup  Sweden
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Should we design a 5 amplifiers or 6 amplifiers system?

2 + 2 mid-high
+ 1 subwoofer mono amp
or
3 + 3 low-mid-high

Before we decide active crossover freqencies, filter order(12/24 dB)
and filter type (Butterworth, Bessel, Linkwitz-Riley or Chebychev)
I think we should have a look at suitable tweeters and woofers.

Lets have a vote for what loudspeaker drivers our system should use!
From this we can go on to filters and amplifiers design.
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Old 23rd January 2006, 02:23 AM   #19
PierreG is offline PierreG  Canada
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Default Re: Le plaisir est pour mois...merci beaucoup, vout etes très gentille.

Quote:
Originally posted by destroyer X
The pleasure is to myself, thank you, you are very kind.

J'aime les Canadiens, les françaises, Du Quebec ce sont bonnes amis.
au revoìr.
regards,
Carlos
Salut à toi Carlos, je suis content de savoir que tu parle francais. J'ai appris à connaitre les Brésiliens et j'ai beaucoup de respect pour vous. I always think we are as hot blodded as you are. But I won't try to make a contest about that. HA HA I worked to build the Petronas P36 (petrol platform) here in Quebec who very sadly sank on the mexican golf a few years ago .....and by the way had to work with some brasilian folks. They are proud people and I think, they desrve to be proud. Hope to meet you some day. Who knows what will happend in the future....
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Old 23rd January 2006, 04:18 AM   #20
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Oh my . . .

When my wife is in state of love with me, my speaker size, colour and shape do not matter much.

Or, vice versa.

I managed building of my big J-Low speakers after spending lots of love with my wife . . . phew . . . I should make my wife too busy to see my diy amps, interconnect and speaker cables . . . phew . . .

Regards
jh
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