Lykk
did you tried gain of 60db , and then you can include RIAA feedback loop of 20db , so you can try it even for MC ................ considering that you have 96db spks ........ ?
did you tried gain of 60db , and then you can include RIAA feedback loop of 20db , so you can try it even for MC ................ considering that you have 96db spks ........ ?
Zen Mod said:
I'd say you should go directly to 80dB gain, you're gonna end up there eventually anyway.
Magura 🙂
Magura said:
but even then - he must pair it with Leach amp ; otherwise he'll not get enough gain in system .
Zen Mod said:
but even then - he must pair it with Leach amp ; otherwise he'll not get enough gain in system .
Sure, but at least he will be at ease, knowing he has 80dB gain.
Magura 🙂
carpenter said:
yo , Woodie - where you been lately ?
finishing those beauties ?
please - can you post some bigger res pic , or just send it right away to me 😉
btw - can ya share what's in them?
here or in right OT thread , whatever 😉
carpenter said:
That looks familiar... I have seen similar one in my room....
But, often I have to de-engineer that blue container in order to dampen high-pitched noise, which interferes with the sound of my stereo....
last, but not least, number 6:
BTW, the horn is driven by a JBL 2446 compression driver, the midbass cab is driven by Eminence Kappa 12 in drivers, and the bass cab is driven by Mach 5 18 in drivers that I purchased from a fellow in Canada--they cost more to ship than the value of the driver--X-max is 14mm--Fs 30hz, but they EQ down to 20 hz with no problem. I drive them with the Beheringer 2400 watt Europower amp--plenty good for home-theater.
BTW, the horn is driven by a JBL 2446 compression driver, the midbass cab is driven by Eminence Kappa 12 in drivers, and the bass cab is driven by Mach 5 18 in drivers that I purchased from a fellow in Canada--they cost more to ship than the value of the driver--X-max is 14mm--Fs 30hz, but they EQ down to 20 hz with no problem. I drive them with the Beheringer 2400 watt Europower amp--plenty good for home-theater.
Attachments
I could need a little help Please!
I i as i wrote before, having some hum-issues with my "Right" channel.
As far as i have been troubleshooting as this:
I have used resistor R7 / R21 200k to give 20x gain, adjustment 3,3v R24 (15mA) through Q8 Q7 (?) - Inductors set at 1,1v each. (Tried higher but with same result's, but with much more heat dissapation.)
Tried swapping supply + new adjustment.
Tried swapping coil's (inductor's) + new adjustment.
Hum seem's to be at same level, independent of volume-control, also it sound's like the hum, pendles a bit up/down (hard to explain).
If i meassure with my scope, from output, and that way in, the hum, seem's to appear at the Drain of Q1/Q6. But i am having trouble figuring out excatly how the circuit work's... so maybe someone could help here, explaining a bit about the circuit.
Hum is very high freq. (Thanks Magura), and seem's to be 4x the other channel (which is 99% silent) - Except, from some regulater/mosfet very quit hisss)
EDIT: if i put finger on resistor R6/R18 (input) the hum dissapears (tried to change them resistors too)
Jesper.
I i as i wrote before, having some hum-issues with my "Right" channel.
As far as i have been troubleshooting as this:
I have used resistor R7 / R21 200k to give 20x gain, adjustment 3,3v R24 (15mA) through Q8 Q7 (?) - Inductors set at 1,1v each. (Tried higher but with same result's, but with much more heat dissapation.)
Tried swapping supply + new adjustment.
Tried swapping coil's (inductor's) + new adjustment.
Hum seem's to be at same level, independent of volume-control, also it sound's like the hum, pendles a bit up/down (hard to explain).
If i meassure with my scope, from output, and that way in, the hum, seem's to appear at the Drain of Q1/Q6. But i am having trouble figuring out excatly how the circuit work's... so maybe someone could help here, explaining a bit about the circuit.
Hum is very high freq. (Thanks Magura), and seem's to be 4x the other channel (which is 99% silent) - Except, from some regulater/mosfet very quit hisss)
EDIT: if i put finger on resistor R6/R18 (input) the hum dissapears (tried to change them resistors too)
Jesper.
Naahh... not just yet...
Actually, i have one channel working allmost 100%... But due to noise problem's on second, i had laid the thing back on the shelf for now... I think, after several conversations with Magura, that some of the problem, could be cured with an shuntreg. / or another better than my seriereg.
Actually, i don't know when i will have time, for proceding with the Drek, cause in next 2month, we are moving house.
So, my setup there, will be somewhat very different, from the BIG livingroom we got here now.... It might even be possible that all of my gainhungry problem's dissapear this way hehe...
In Meantime i have been playing with a setup, combined with my 2halfchang/Fostex207e FR + and a servosub... This really rock's... The servoplateamp. i am feeding through highlevel in, e.g directly from F4's balanced output.
I will also try to find some time, to experiment with some passive Xover placed at the FR's speakerterminal's for filtering out, the low freq... just to hear if it improves the sound even more... very exiting...
Jesper.
Actually, i have one channel working allmost 100%... But due to noise problem's on second, i had laid the thing back on the shelf for now... I think, after several conversations with Magura, that some of the problem, could be cured with an shuntreg. / or another better than my seriereg.
Actually, i don't know when i will have time, for proceding with the Drek, cause in next 2month, we are moving house.
So, my setup there, will be somewhat very different, from the BIG livingroom we got here now.... It might even be possible that all of my gainhungry problem's dissapear this way
hehe...In Meantime i have been playing with a setup, combined with my 2halfchang/Fostex207e FR + and a servosub... This really rock's... The servoplateamp. i am feeding through highlevel in, e.g directly from F4's balanced output.
I will also try to find some time, to experiment with some passive Xover placed at the FR's speakerterminal's for filtering out, the low freq... just to hear if it improves the sound even more... very exiting...
Jesper.
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