[Icom] external speaker for IC 746

Sun, 3 Feb 2002 08:09:34 -0500

I'm using an IC746 with a Timewave DSP 59+ and the combination works well.  I can't think why you would have
trouble on voice peaks unless you are driving the input of the DSP filter with excess audio.  I imagine you
already know that.  Anyway, with the DSP filter in line I generally keep the volume control on the 746 between
the 8 and 9 o'clock position.  (Also, I'm using a mono plug to take audio from 746 for the DSP filter.)

Sorry I can't offer more information except for thE fact it should work.  Does the setup sound ok with
headphones (which on the DSP 59+ must be stereo)?  If it works with headphones, can you try a different
external speaker?

73, Steve/W4FMD

----- Original Message -----
From: "Tom Johnson" <[email protected]>
To: "ICOM Reflector" <[email protected]>
Sent: Saturday, February 02, 2002 10:26 PM
Subject: [Icom] external speaker for IC 746

> Earlier today, I asked if anyone knew if the speaker connection on the rear
> of the 746 was mono or stereo. The unanimous consensus was  that it is mono.
>
> I hooked it up using a mono jack, and ran it through a Timewave DSP 9+ to a
> Drake MS4 speaker. The signal began cutting out on loud signals, and at
> times, sounded very tinny. I have 2 of these and tried both, with no change
> in the problem. I then took the DSP 9+ out of the circuit and ran the cable
> directly to the MS4, with the same results. Unplugging everything from the
> rear speaker plug and using the internal speaker results in normal sounding
> signals.
>
> The purpose of the Timewave was to give me an outboard method of controlling
> the speaker as well as the audio enhancement feature of the unit. I need the
> external speaker due to the need to place some things on top of the 746
> cabinet.
>
> Has anyone else had such an experience and / or any ideas on what's going
> on? Could this be in the rear speaker plug?????
>
> Thanks in advance
>
> Tom
>
> N4TJ
>
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