[Elecraft] Motorola Speaker VS Bookshelf Speaker ?

[Don Brown]

Hi

This is why I think a PA speaker would be the best choice. Not the outdoo=
r horn speakers but the indoor type that are mounted in a simple box or t=
he ceiling. This type of speaker is designed for voice frequencies and lo=
w power with a lot of punch to get your attention. They are usually stiff=
 cone short throw with small magnets. The common HiFi speaker is a long t=
hrow with a huge magnet so it can move enough air at low frequencies. Jus=
t the opposite design goal. =20

The Motorola speaker is fine for what it does best but may not be the bes=
t choice for the shack.

Don Brown
KD5NDB =20

----- Original Message -----
From: Bob Lewis (AA4PB)
Sent: Sunday, August 04, 2002 10:53 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Motorola Speaker VS Bookshelf Speaker ?

I think in general, flat frequency response and efficiency are at odds
with each other when it comes to speakers. The better the frequency
response, the more power it takes to drive it. Since the frequency
response of a SSB receiver is limited to about 300 to 3000 Hz, there's
not much benefit in having a speaker with a range of 20 Hz to 20,000
Hz. A wide range speaker can be a detriment since it may reproduce the
hum, noises, and pops that are not heard with a communications type
speaker.


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