in line active.

[john & Jake]

hi,
anyone used these or similar, any thoughts?

http://www.ebay.co.uk/itm/370638571439?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649#ht_2217wt_1271

 

[Tenson]

A what?

 

[john & Jake]

A what?

Sorry, Forgot this was Pink Fish and not the Paranormal Psychic Forum.

linky here now
http://www.ebay.co.uk/itm/370638571439?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649#ht_2217wt_1271

 

[Tenson]

They will be inaccurate because the components inside will set the filter point along with with source and load impedance of the equipment they are connected between.

E.g. If they expect a 20K Ohm load for a 2.5KHz filter point, but your equipment has a 10K Ohm load, it will make the filter point 1.25KHz.

 

[john & Jake]

Thank you Tenson, I'll give them a miss then, is this solution any better?

http://www.ebay.co.uk/itm/140854601536?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649#ht_628wt_1139://

 

[Tenson]

That would certianly be more predictable in its performance since the op-amps provide a known and fixed impedance to the filters.

 

[john & Jake]

cheers Tenson, I'll investigate it further