Substitute for 4136
Bo-Ming Tong
4136 ? There are ten of these in my car equalizer (12 band x 2).
Thanks !
By the way, this 14 pin IC has Vcc and Vee at pin 14 and pin 7 !
If I remember correctly, the majority of quad op amps have the
power pins at pin 4 and pin 11, don't they ?
--
Bo-Ming Tong 唐寶明 1-520-621-2152 | Department of Computer Science
Find my academic publications, my music, the | University of Arizona
Nikon FAQ, info on photography/car audio at: | PO BOX 210077
http://www.cs.arizona.edu/people/bmtong/ | Tucson AZ 85721-0077, U.S.A.
Monte P McGuire
Bo-Ming Tong <bmt...@CS.Arizona.EDU> wrote:
>Would you recommend a high quality substitute for a quad op-amp IC,
>4136 ? There are ten of these in my car equalizer (12 band x 2).
>Thanks !
Yikes!! The 4136 sounds like garbage!! If I remember right, it has a
whacko pinout that is only replaceable by the TL075, which is a
definite improvement, but not all that fine either (especially these
days).
If you have access to PC layout software, you'd do well to lay out a
small board that holds a pair of Burr Brown OPA2604 and adapts their
pinout to the whacky 4136 pinout. The 2604 is a wonderful sounding
amp, but you'll have to do some serious work to shoehorn them into
your amp.
The TL075 is a definite step up though... do this first and see how
adventurous you are for the next step.
Regards,
Monte McGuire - N1TBL
mcg...@world.std.com
JHelmnj
(Bo-Ming Tong) writes:
>
>Would you recommend a high quality substitute for a quad op-amp IC,
>4136 ? There are ten of these in my car equalizer (12 band x 2).
>Thanks !
No. Putting good money into precision op-amps for a car
stereo is pointless. Sort of like paying for Pauly Shore's
acting lessons.
IMNSHO.
Thomas Mosteller
>
> Would you recommend a high quality substitute for a quad op-amp IC,
> 4136 ? There are ten of these in my car equalizer (12 band x 2).
> Thanks !
> Bo-Ming Tong 唐寶明 1-520-621-2152 | Department of Computer Science
> Find my academic publications, my music, the | University of Arizona
> Nikon FAQ, info on photography/car audio at: | PO BOX 210077
> http://www.cs.arizona.edu/people/bmtong/ | Tucson AZ 85721-0077, U.S.A.
Bo-Ming:
You're just about out of luck with the 4136. The pinout it uses was
an evolutionary dead end. The + input is next to the output, this makes
for lots of stability problems. My advice is to get another EQ!
Tom Mosteller
Christopher Moore
>Would you recommend a high quality substitute for a quad op-amp IC,
>4136 ? There are ten of these in my car equalizer (12 band x 2).
>Thanks !
>
>If I remember correctly, the majority of quad op amps have the
>power pins at pin 4 and pin 11, don't they ?
>Bo-Ming Tong 唐寶明 1-520-621-2152 | Department of Computer Science
>Find my academic publications, my music, the | University of Arizona
>Nikon FAQ, info on photography/car audio at: | PO BOX 210077
>http://www.cs.arizona.edu/people/bmtong/ | Tucson AZ 85721-0077, U.S.A.
----Yes, the 4136 does have power on the corner pins. You might find
that Harris or Motorola still make a compatible part, but I'm not sure.
If they do, it might or might not be better.
--
Christopher Moore Products, Concepts, and Circuits for Audio
Seven Woods Audio, Inc. Analog / Digital
Belmont MA 02178 USA 72674...@compuserve.com
Tom Brooks
Bm> From: bmt...@CS.Arizona.EDU (Bo-Ming Tong)
Bm> Subject: Re: Substitute for 4136
Bm> Organization: University of Arizona CS Department, Tucson AZ.
Bm> Disclaimer: I don't speak for U. Arizona and opinions are mine alone
Bm> Would you recommend a high quality substitute for a quad op-amp IC,
Bm> 4136 ? There are ten of these in my car equalizer (12 band x 2).
Bm> Thanks !
Bm> By the way, this 14 pin IC has Vcc and Vee at pin 14 and pin 7 !
Bm> If I remember correctly, the majority of quad op amps have the
Bm> power pins at pin 4 and pin 11, don't they ?
Try the LM324 i have good luck using them as a sub. MCM has them
800-543-4330. At about 1.00ea.
Tom
... Catch the Blue Wave!
___ Blue Wave/QWK v2.12
--
|Fidonet: Tom Brooks 1:2320/999
|Internet: tom.b...@datacom.iglou.com
|
| Standard disclaimer: The views of this user are strictly his own.
Kalman Rubinson
: Try the LM324 i have good luck using them as a sub. MCM has them
: 800-543-4330. At about 1.00ea.
DON'T! Wrong pinout.
Kal
Mike Diack
> Bm> Would you recommend a high quality substitute for a quad op-amp IC,
> Bm> 4136 ? There are ten of these in my car equalizer (12 band x 2).
> Bm> Thanks !
>
> Bm> By the way, this 14 pin IC has Vcc and Vee at pin 14 and pin 7 !
> Bm> If I remember correctly, the majority of quad op amps have the
> Bm> power pins at pin 4 and pin 11, don't they ?
>
>
> 800-543-4330. At about 1.00ea.
>
4136 has v- on pin 7, the 324 on pin 11
all the other pins are different as well,
and the 324 has the worlds worst crossover distortion (all the other
characteristics are pretty lousy as well, on the bright side, they dont
pull much juice)
M
Tom Brooks
Mo> Subject: Re: Substitute for 4136
Mo> From: mo...@kcbbs.gen.nz (Mike Diack)
Mo> Organization: Kappa Crucis Unix BBS, Auckland, New Zealand
Mo> This will not work - the 4136 has v+ on pin 11, the 324 on pin 4
Mo> 4136 has v- on pin 7, the 324 on pin 11
Mo> all the other pins are different as well,
Mo> and the 324 has the worlds worst crossover distortion (all the other
Mo> characteristics are pretty lousy as well, on the bright side, they
Mo> dont pull much juice)
Mo> M
Sorry Guys:
I must have fell asleep on that one. You know what they say is the first
thing to go. What was I saying........
What I should have said is that this chip will work, but the print will
have to be changed. If you are looking for a direct replacement the only
ones I know of is the TLO75 and the RC4236. Both were to be the
replacement for the 4136. Which was never loved by we in the music
industry. All it is is 4 741 in one package. Everyone knows how
noisey and short a life they had. MCM has the RC4136 for 2.35ea.
Sorry again guys.
tom
... "What?!? This isn't the Files section?!?"
Alan Garren
>----Yes, the 4136 does have power on the corner pins. You might find
>that Harris or Motorola still make a compatible part, but I'm not sure.
>If they do, it might or might not be better.
a chip for this purpose that has more power on the corners would be a
definate improvement. just think your head room would increase as you
reved your engine going around the corners
:-)
alan
Greg J Szekeres
When I was looking for subs quite a few years ago I was comparing
the slew rates of various types. I found some approaching
2 volts/microsecond versus a standard spec of 1 volt/microsecond.
These really made a difference on the straigtaways.
greg