Bass leaves after amp warms up?

04-19-13: Fishing716
I have a portable cd recorder & plan to record when the bass is there & not-maybe hear the difference from the cd I make.

The following was written before seeing Drubin's post just above, with which I agree:

What would really be ideal, if you can arrange it, would be to mount a good quality microphone on a stand at the listening position, and record its output when the problem is and is not present (using a suitable microphone amplifier together with the CD recorder, if the recorder doesn't provide a mic input).

You could then upload the two files to a web hosting or file sharing service, and we could analyze them with audio editing software some of us have (including me).

One reason that may be more meaningful than an SPL measurement is that unless you use a CD or other recording that provides test tones, in conjunction with the SPL meter, the SPL measurements may not be able to distinguish between a reduction of bass frequencies, and a reduction of volume that may be perceived as a reduction of bass as a result of the Fletcher-Munson Effect.

Regards,
-- Al

do you have a CD with frequency-specific tones you can use,like one of the old Stereophile Test CDs? One-third

Yes I have Stereophile test cd #3

I will get a SPL soon as possible

Also I can record from my listeing positin when the
Problem is and is not present

I will upload on my computer & be able to send a copy by email

OK I recorded a Song "Respect yourself" Staple Singers w/The bass the way it sounds right to me and with the bass not the same to me
I can send in email and will open in your real player
Anyone would like to hear the two versions please mention your email addresss
Thanks
AP

Anyone would like to hear the two versions please mention your email addresss

I don't think that A'gon allows posting or communication of email addresses, and the onsite messaging system can't accommodate attachments. Can you upload it to a web hosting or file sharing service and provide a link?

Regards,
-- Al