GA,

The Question may not be on the selection of the Filters; but on
"How Effective" the Pass Band Tuning will be with these Filters.
If the PBT is 'effective' with the 7kHz Filter? Then there is
the potential to shift or narrow the 7kHz Filter's characteristics
to suit the Radio Listeners Needs.

Plus the 7kHz Filter may be necessary as the Primary Filter for
the XM Satellit Radio feature to function properly and give full
audio sound. Radio Design is Full of Compromises

~ RHF
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= = =
= = = (Gary) wrote in message . com...
(Mike Maghakian) wrote in message . com...
I do not like those choices of bandwidths, they MUST have a 6K selection


I think the 7.0, 4.0, and 2.5 are the ideal three if they are decent
quality. Of course these are nominal figures. The Satellit 800 has a
6.0, but in reality, tests show that from set to set, the filter
varied from 6.1 to 7.4.

The AOR 7030, an $1,800 desktop, has a 7.0, 5.5, and 2.2.

Depending on the quality of the filter, a good 7.0 is much better than
an average 6.0 filter. The 7.0 will give the added frequency
response. Hopefully the filter will have a sharp cutoff so as to keep
hets, etc. out.

The Sony 2010 has 9.4 and 4.3 filters, and the 60db cutoff of the 9.4
filter is at 17.9 - very poor.

The Kenwood 5000 came with a 6.3 wide filter with a 60db cutoff at
23.9 - terrible! Their optional more expensive filter was a 6.5 with
a 9.8 60db cut.

So whether 7.0 or 6.0 is "better" all depends on the quality of the
filter.