Head-Fi.org › Forums › Misc.-Category Forums › DIY (Do-It-Yourself) Discussions › Best sounding cheep op-amp for CMoy's? OPA2227, OPA2228, AD8066...other?
New Posts  All Forums:Forum Nav:

Best sounding cheep op-amp for CMoy's? OPA2227, OPA2228, AD8066...other? - Page 5

post #61 of 63
3/1/13 at 10:23am

hi

 

yes it changes beause it is not well used !

these types of OP amp are not designed to directly drive these loads, that's why the sound changes between amps .

 

you can't possibly use a led driver to drive a motor... here there is no power stage,

 

here is a good output stage  (see Q1 and Q2)

 


Edited by guanglier - 3/1/13 at 10:24am
Reply

Head-Fi's Best Sellers

post #62 of 63
3/1/13 at 10:31am

here is the amp i designed, i measured with scope and function generator, signal is perfect even at 100 Khz !

 

Reply
post #63 of 63
5/5/13 at 5:41am

Looking for forum advice on what opamp will provide the cleanest bass. This is not for audio listening but rather to use with some field equipment. Units are coupled with Bose QC-15's set on low, believe impedance is rated at 73 ohms +/- 10% at 1khz. My needs are quite low end - top end is < 5000 hz and I need very clean, smooth sound < 1500 hz. Would consider 2x 9v as power supply in the cMoy if that offers better chip options. Thanks!

Reply
New Posts  All Forums:Forum Nav:
  Return Home

Head-Fi's Best Sellers

Head-Fi.org › Forums › Misc.-Category Forums › DIY (Do-It-Yourself) Discussions › Best sounding cheep op-amp for CMoy's? OPA2227, OPA2228, AD8066...other?