[sdiy] ALFA clone chips?
admin at bugbrand.co.uk
Sat Mar 27 22:15:25 CET 2021
Personally I feel this is Coolaudio muscling it - I have used their
2164s before but prefer to support the small guys who've made the bold
step to work on producing chips - Alfa & Sound Semiconductor.
I've still yet to really test the Alfa samples I've received but they've
been good to deal with (I have a roll of S08 AS394 matched NPNs to use
shortly) - SoundSemi have been really excellent & have great support &
documentation for their small but classy range of chips.
Slight offtopic, sorry ;)
On 27/03/2021 18:34, Tom Wiltshire wrote:
> CoolAudio lowered their prices significantly is what happened, for
> both V3340 and V3320. Alfa’s previously much lower prices might well
> be a part of the reason why. Either way, Coolaudio's chips suddenly
> got a lot more appealing.
> The 3320 has a maximum current (100uA or so) for the resonance control
> input. As long as you put a large enough resistor in front of it for
> the voltage you’re using, there’s no problem. It’d be nice if they
> made this more obvious, instead of merely implying it with a 100K
> resistor on the datasheet circuit, but that’s exactly the same as the
> CEM3320, and as the CEM datasheet.
>> On 27 Mar 2021, at 15:57, Benjamin Tremblay via Synth-diy
>> <Synth-diy at synth-diy.org <mailto:Synth-diy at synth-diy.org>> wrote:
>> And I have noticed vendors are moving away from some of the AS chips.
>> Coolaudio is eating their lunch.
>>> On Mar 27, 2021, at 11:46 AM, Benjamin Tremblay <btremblay at me.com
>>> <mailto:btremblay at me.com>> wrote:
>>> I have not tried the VCO, but have had great results with the 3320
>>> VCF and the 3360 VCA. It’s pretty much Pro One for the masses.
>>> The 3320 is easy to damage if you over-power the resonance control.
>>> The 3360 can be tamed once you work within the correct control
>>> voltage range.
>>> I’m an idiot. I don’t have a scope. But they sound great and I was
>>> able to get them stood up and move on to the rest of my project.
>>> I’m also using a number of AS2164 chips. I have never used other
>>> brands, but these work great for computer-controlled mixers of
>>> analog signals.
>>> I made no effort to squeeze any gain out of them using negative
>>> voltage bias on the control pins. They work fine for my application.
>>> I still have some 3330 VCA chips. They were very frustrating to use.
>>> They seem to require a low-impedance voltage divider that gets very
>>> noisy without careful placement of capacitors.
>>> Maybe if I go back and try to breadboard them after having learned
>>> the 3360 I could be more successful.
>>>> On Mar 27, 2021, at 11:19 AM, cheater cheater
>>>> <cheater00social at gmail.com <mailto:cheater00social at gmail.com>> wrote:
>>>> I was wondering if anyone had any experiences with ALFA clones of
>>>> classic chips. Are they good? Is anything missing? Are they very crap?
>>>> No difference at all? Any specific ones to watch out for?
>>>> Synth-diy mailing list
>>>> Synth-diy at synth-diy.org <mailto:Synth-diy at synth-diy.org>
>>>> Selling or trading? Use marketplace at synth-diy.org
>>>> <mailto:marketplace at synth-diy.org>
>> Synth-diy mailing list
>> Synth-diy at synth-diy.org <mailto:Synth-diy at synth-diy.org>
>> Selling or trading? Use marketplace at synth-diy.org
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> Selling or trading? Use marketplace at synth-diy.org
UK company No. 07199808
VAT No. GB 988 2629 57
1 Ninetree Hill
BRISTOL BS1 3SB
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Synth-diy