Member Since 25 Apr 2010
Offline Last Active Today, 08:26 AM

Posts I've Made

In Topic: Why isn't my amp loud enough? Connecting consumer audio devices to Crown...

05 April 2016 - 08:58 AM

I don't understand the issue here.  For one, if you think the system lacks volume, set the amp gain knob at the maximum.  Then, why do you think that it's a problem to have the preamp volume past 12:00 ?  Hint : it's not!

Consumer home amps usually have too much gain, which is why you are used to set the volume lower on the preamp.

In Topic: What current model replaces my old amp?

16 March 2016 - 10:00 AM

View PostArtie, on 13 March 2014 - 04:51 PM, said:

Excellent document. Thanks for providing this. Although, I do wish Crown would do a couple of "home audio" amps again. ;)

The Drivecore XLS has RCA inputs and are as silent as it gets.  They would do nicely in any serious home system!

In Topic: -20.-10 warnings

15 March 2016 - 12:47 PM

I greatly prefere and do use active amplification in my home setup, but I understand all this stuff very well since work in that field and I actually DIYed my own speakers.  I can understand someone not wanting to crack open its brand new speakers to remove the passive crossover and reverse-engineer the crossover specs to replicate it in an active processor.  In particular, hifi tweeters have very little tolerance of user errors.

In that case, I'd keep a single, more powerful amp with the speaker's built-in passive crossover.  Doing passive biamplification with a receiver will be difficult.  You do need a variable main output on a preamp, and some way to split the signal to two amps.

In Topic: -20.-10 warnings

14 March 2016 - 08:51 AM

In the Hifi world, there is such a thing as passive bi-amp, where two distinct amps are feeding each a part of the loudspeaker, but with the same full range signal.  The loudspeaker's passive crossover is kept in place, but fed from two amps.  Actual or perceivable improvement of doing this is up for argument, but it has a nice side effect for the dealers, which is selling two amps instead of one!  ;)

As for the OP inquiry, I'm affraid I do not understand the issue.  If the system is lacking bass, turn up the XLS gain, if there is too much bass, lower it!

Oh, and the Tape Out on a receiver is fixed level, so it cannot be used as a pre-amp output.

In Topic: UPS Size for ComTech 8150 and CDi4000

16 February 2016 - 10:46 AM

I can imagine an organisation wanting their paging system to stay operative in the case of a power interruption, like an hospital, school, large retirement house or whatnots.  If the system is to be operated any more than for a few messages here and there, you will need more than a simple UPS.  I'd suggest an inverter/charger unit allong with an external battery banks.  You may also need a unit with true sine-wave output too, as some devices will balk at the pseudo sine-wave that most UPS/Inverters are providing.

In case of intense use of the amp, a gas generator will be better suited.