Mr. Mile,
today i test my dc servo with tl072 and yes it work!,
i've removed 220uf elco.
value for pin 1 and 2 was inverted
value for pin 1 and 7 was inverted
and dc offset between 0.9mv to max 3.9 mv.
and now waiting for better lf412.
Please change and revised your ax17s schematic so other builder will get benefit from my experience with ax17s dc servo problem.
do i have to change R36 1k to 10k as you suggested in previous post?
thanks and regards.
naf
today i test my dc servo with tl072 and yes it work!,
i've removed 220uf elco.
value for pin 1 and 2 was inverted
value for pin 1 and 7 was inverted
and dc offset between 0.9mv to max 3.9 mv.
and now waiting for better lf412.
Please change and revised your ax17s schematic so other builder will get benefit from my experience with ax17s dc servo problem.
do i have to change R36 1k to 10k as you suggested in previous post?
thanks and regards.
naf
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Hi Apex,
I want to add DC servo like your DC Servo MOSFET Amplifier
on this AX-series
that is only use single OP such LF411 or TL071
Is that possible with AX17 & AX14 also?
Regards
I want to add DC servo like your DC Servo MOSFET Amplifier
on this AX-series
that is only use single OP such LF411 or TL071
Is that possible with AX17 & AX14 also?
Regards
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No need to add dc servo, this is simple amps with small offset (under 10mV without seting and meatching transistors).
I suggest go to Studio Reference amps with dc servo.
Regards
Ok, thanks
I want to finish AX14 first
then go to SRA...
but there are many version of your SRA,
maybe I'll take the V2
you also more like bass from SRA, which one do you suggest?
Thanks
I want to finish AX14 first
then go to SRA...
but there are many version of your SRA,
maybe I'll take the V2
you also more like bass from SRA, which one do you suggest?
Thanks
What speakers you have? Use SR200 pcb and you can reduce power if you no need 200W.
Regards
100% agree, good speaker + good amplifier = perfect (for me)
I'm using 12 inch speaker 8 ohm ratted 350watt + 1 piezo tweeter
I feel better to use smaller amplifier & loaded 8 ohm
The Amp is not to worry because only 8 ohm,
& the speaker just sound very good with this AX
I guess this speaker will be good also if drive by your SR200
I will go to see SR200 http://www.diyaudio.com/forums/solid-state/173462-studio-reference-amplifier.html
Regards
Hi,
Can 2SC5200+2SA1943 be replaced with TIP3055+TIP2955 ? I just want to build AXs in light version (low cost output) .Power rail is not exceed +-40 VDC.
Can 2SC5200+2SA1943 be replaced with TIP3055+TIP2955 ? I just want to build AXs in light version (low cost output) .Power rail is not exceed +-40 VDC.
+-40Vdc into 8ohms speakers for domestic use, not party levels, is probably going to be OK with 1pr of output devices.
apex i can not find ferit coil 15mm size for speaker teriinal do i need it or i can use only 16 turns of wire
Use only 16 turns of wire, you don't need ferit coil, it's air coil inductor.
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I suggest to use this circuit for turn on/off mute if you use speaker terminal with triac dc protect.
