Hello everyone,
I built a stereo preamp kit from http://www.dse.com.au which uses a Baxandal circuit block around an LM833 opamp for the tone controls (if memory serves me well). With the tone controls centered, I noticed that midbass was noticeably softer -- like the preamp lacked some midbass "bite" -- than when the whole preamp kit was removed from the signal path. Bypassing the whole preamp circuit brings back the sound to "neutral." Just recently I bought an LM833 opamp-based subwoofer processor circuit for my Shiva-based sub and noticed that it too had a rather soft midbass character.
I was wondering if anyone has noticed the same LM833 "characteristic" as I have...
TIA
Isaac
I built a stereo preamp kit from http://www.dse.com.au which uses a Baxandal circuit block around an LM833 opamp for the tone controls (if memory serves me well). With the tone controls centered, I noticed that midbass was noticeably softer -- like the preamp lacked some midbass "bite" -- than when the whole preamp kit was removed from the signal path. Bypassing the whole preamp circuit brings back the sound to "neutral." Just recently I bought an LM833 opamp-based subwoofer processor circuit for my Shiva-based sub and noticed that it too had a rather soft midbass character.
I was wondering if anyone has noticed the same LM833 "characteristic" as I have...
TIA
Isaac
Replace the LM833 with NE5532 and with LF353 alternately. Please report whether in your circuit these opamps too have a slightly laid back mid.
Sam, thanks for the reply 🙂
Is the NE5532 pin-for-pin equivalent with the LM833? Lastly, are there any sonic differences between the NE5532 and NE5534? It looks like the NE5532 is only available through (more) specialised electronics stores.
Isaac
Is the NE5532 pin-for-pin equivalent with the LM833? Lastly, are there any sonic differences between the NE5532 and NE5534? It looks like the NE5532 is only available through (more) specialised electronics stores.
Isaac
NE5534 is a SINGLE that IS NOT compensated for unity gain.
NE5532 is a DUAL unit that IS stable at unity gain.
So, this is not a drop in replacement!
NE5532 is a DUAL unit that IS stable at unity gain.
So, this is not a drop in replacement!
Well, it really was the LM833 that sounded "odd." TL072 (or LF353) opamps are readily available here in our town, so I tried one with my subwoofer processor circuit and the midbass response came to life! Midbass doesn't sound thin anymore 🙂
I found a distributor of NE5532 opamps several towns away at http://www.altronics.com.au, I wonder how it would sound with the circuit.
🙂
I found a distributor of NE5532 opamps several towns away at http://www.altronics.com.au, I wonder how it would sound with the circuit.
🙂
- Status
- Not open for further replies.