Reply to thread

Message

<blockquote data-quote="Mike Caldwell" data-source="post: 42367" data-attributes="member: 170">Re: QSC GX3 - Is it enough for my horns? Something else to considerThat box does have the 2447, basically same thing as a 2445 without the extended throat that opens up to a two inch. The diaphragm most likely is also the ribbed version for extra stiffness. You said the 2404 baby cheek tweeters were disconnected. The crossover network is still inline for the the 2447 and 2404 when switched into the bi-amp mode and it is low passing the 2447 somewhere around 6000hz or 7000hz as it assumes the 2404 is active to pick up at that point and go on out. The 2447 will work fine running all the way out on the top end with a little CD horn EQ applied at the DSP but since the internal passive crossover that will need to be physically by passed in the cabinet. You would want to put a blocking cap in series with the 2447 driver, something about 10uf to 12uf would work well for some low frequency and DC protection. When bi-amping play with a crossover frequency around 1,200hz to 1,500hz and see what you like.Believe it or not when those boxes are ran in the full range mode there is no crossover filtering on the 12&#039;s, they get all of the full range signal and run all the out till they just naturally roll off. I guess they did that to save money on using really big high power inductors on the crossover network!With some simple mods and basic bi-amping they will sound better.With your set up you&#039;ll run out headroom first on the 12&#039;s with the PL230, the 2206 is a good sounding 12 but not the most efficient when used as a mid driver.One more thing, as your cabinets are with the disconnected 2404 tweeters even when in the full range mode the 2447 is still low passed in the 6k to 7k range.</blockquote>

[QUOTE="Mike Caldwell, post: 42367, member: 170"] Re: QSC GX3 - Is it enough for my horns? Something else to consider That box does have the 2447, basically same thing as a 2445 without the extended throat that opens up to a two inch. The diaphragm most likely is also the ribbed version for extra stiffness. You said the 2404 baby cheek tweeters were disconnected. The crossover network is still inline for the the 2447 and 2404 when switched into the bi-amp mode and it is low passing the 2447 somewhere around 6000hz or 7000hz as it assumes the 2404 is active to pick up at that point and go on out. The 2447 will work fine running all the way out on the top end with a little CD horn EQ applied at the DSP but since the internal passive crossover that will need to be physically by passed in the cabinet. You would want to put a blocking cap in series with the 2447 driver, something about 10uf to 12uf would work well for some low frequency and DC protection. When bi-amping play with a crossover frequency around 1,200hz to 1,500hz and see what you like. Believe it or not when those boxes are ran in the full range mode there is no crossover filtering on the 12's, they get all of the full range signal and run all the out till they just naturally roll off. I guess they did that to save money on using really big high power inductors on the crossover network! With some simple mods and basic bi-amping they will sound better. With your set up you'll run out headroom first on the 12's with the PL230, the 2206 is a good sounding 12 but not the most efficient when used as a mid driver. One more thing, as your cabinets are with the disconnected 2404 tweeters even when in the full range mode the 2447 is still low passed in the 6k to 7k range. [/QUOTE]

Verification