Prev: Quick question from an old has-been
Next: Pianos WAS: Mic recommendation for soloact
From: Tim Perry on 29 Nov 2009 13:54

"Marc Amsterdam" <reply(a)newsgroup.only> wrote in message
news:k7fvg51m6qcoh8p9urjjsq52ljf8knjika(a)4ax.com...
> Hi
>
> Im looking to an alternative to the Philips-NXP NE5532n
> preferrably the Analog divice brand.
> Ive tried the NE5532AP *texas intruments( so far but they lack
> headroom. Anyone any thoughts_
>
>
> Cheers
>
> Marc


try a burr-brown opa2134


From: geoff on 29 Nov 2009 17:49
Leon(a)nospam.com wrote:
>
> As far as your headroom problem, you must have a circuit with very
> tight specs... you aren't meeting the drive requirements or
> something... can you get a schematic? Did you check your power supply
> for any voltage droop? Maybe those ops are drawing power, or even
> oscillating!

Yes, the 'headroom' ascertion seems a bit odd to me too.

It would be nice to know exactly how this apparent failing actually
manifests.

geoff


From: Phil Allison on 29 Nov 2009 18:12

"geoff" <geoff(a)nospam-paf.co.nz>

>
> Yes, the 'headroom' ascertion seems a bit odd to me too.
>
> It would be nice to know exactly how this apparent failing actually
> manifests.


** The XTA DP226 displays a parameter called "Headroom".

Obviously allows one to tell immediately if a new input IC is up to scratch
or not .....



..... Phil


From: geoff on 29 Nov 2009 20:20
Phil Allison wrote:
> "geoff" <geoff(a)nospam-paf.co.nz>
>
>>
>> Yes, the 'headroom' ascertion seems a bit odd to me too.
>>
>> It would be nice to know exactly how this apparent failing actually
>> manifests.
>
>
> ** The XTA DP226 displays a parameter called "Headroom".
>
> Obviously allows one to tell immediately if a new input IC is up to
> scratch or not .....


Not from what I read. - it's not some sort of internal self-test of levels
at all.

From the descriptions of the various instances of 'headroom' in the manual,
they are simply level indications/warnings wrt max unclipped output level.

But I only had time to skim the manual and as usual you are doubtlessly
right.

geoff


From: Phil Allison on 29 Nov 2009 21:04

"geoff"
> Phil Allison wrote:
>
>>>
>>> Yes, the 'headroom' ascertion seems a bit odd to me too.
>>>
>>> It would be nice to know exactly how this apparent failing actually
>>> manifests.
>>
>>
>> ** The XTA DP226 displays a parameter called "Headroom".
>>
>> Obviously allows one to tell immediately if a new input IC is up to
>> scratch or not .....
>
>
> Not from what I read.


** What do you think my " ..... " meant ????


> From the descriptions of the various instances of 'headroom' in the
> manual, they are simply level indications/warnings wrt max unclipped
> output level.

** Easy to misinterpret such display - is it not?




...... Phil



First  |  Prev  |  Next  |  Last
Pages: 1 2 3 4
Prev: Quick question from an old has-been
Next: Pianos WAS: Mic recommendation for soloact