or Connect
AVS › AVS Forum › Audio › Receivers, Amps, and Processors › New amp is making me grin from ear to ear =)
New Posts  All Forums:Forum Nav:

New amp is making me grin from ear to ear =) - Page 166

post #4951 of 4970
Quote:
Originally Posted by chanc View Post

I also have this trigger problem. Pray tell what is this power outlet which have a master and slave connection and where do I buy it? Amazon link may be?

I purchased my power strip at the local Fry's electronics. You might check Best buys,as they may carry it also.

Alan
post #4952 of 4970
http://www.amazon.com/gp/search/ref=sr_1_3_acs_h_3i_2600773011_541966?ie=UTF8&qid=1371002036&sr=8-3-acs&node=541966&srs=2600773011&field-keywords=smart+strip
I have a Crown XLS1500 and a QSC GX3 controlled by a Smart Strip and have had no trouble with it. My AVR is used to turn the strip on and off.
post #4953 of 4970
Thank you guys!!! Bought a Smart Strip from Amazon. My Crown XLS 1500 is driving a pair of LR Klipsch RB-25.smile.gif
post #4954 of 4970
So what's the big deal about the xls 402, 602. The basic circuit its been used many home amps, receivers, pro and no pro amps for many, many years. But is it a bit special because it uses certain way the out tranies are driven and has plenty of 2nd order harmonics to make the amp sound good. And the tranies are slow, 20+ year old Motorolas, Philips which can nicely cope with reactive loads (low hfe, 5Mhz). wink.gif

http://www.crownaudio.com/media/storagebk/gen_htm/legacy/documents/135277-1_2_XLS2U_main.pdf

Cheers,
the imbecile:D with no system what's so ever
post #4955 of 4970
Quote:
Originally Posted by Klejuch View Post

So what's the big deal about the xls 402, 602. The basic circuit its been used many home amps, receivers, pro and no pro amps for many, many years. But is it a bit special because it uses certain way the out tranies are driven and has plenty of 2nd order harmonics to make the amp sound good. And the tranies are slow, 20+ year old Motorolas, Philips which can nicely cope with reactive loads (low hfe, 5Mhz). wink.gif

http://www.crownaudio.com/media/storagebk/gen_htm/legacy/documents/135277-1_2_XLS2U_main.pdf

Cheers,
the imbecile:D with no system what's so ever

The big deal is (well, was, considering the thread started almost 10 years ago) the bang for the buck, not the details of the circuits.
post #4956 of 4970
From what I can tell this is the "pro audio amp" thread of sorts. Been looking to upgrade from my HT receiver and with my need (err, want) for power and budget, I think a pro amp may be the ticket.

Assuming a quality unit, any downsides to using a pro audio amp over a consumer power amp other than looks, fan noise and lack of snobbery? (none of those I care about).

Any brands/lines to look for or avoid?

I'm sure some of these have been answered in this thread but it's taking me a while to parse through 165 pages...smile.gif
post #4957 of 4970
I have a Crown XLS-1500 attached to a Yamaha RX-A1020. The Crown is running cool and has lots of power. The sound is clean and the dynamics is great. There are other alternatives but the Crown was my choice.
post #4958 of 4970
I recently upgraded my HT. I went the pro audio route. Couldn't be more happier. I have my QSC DCA 1644 powering my front and center speakers. I got my amp from a local installer.
post #4959 of 4970
I currently have a Crown XLS 402 that I'm running bridged mono to a Polk CS400 for my center and a Behringer EP2500 running stereo to a pair of Polk RT55s as my mains. The EP2500 will eventually power an IB sub to replace my current sub when I can scrape together funds for the drivers. I have a Yamaha RX-A700 running as a pre/pro and powering a set of Polk RT55s as rear surrounds and a pair of Polk RT7s as front presence speakers. My room will not allow for a set of rear effect speakers.

In the mean time I have been thinking about amps again. I have been debating between a couple more XLS 402s or the new Drivecore 1500s. My question is if you had an amp for each channel would you run them bridged mono to each speaker or run them in stereo but bi-amped? Also, are the Drivecores that much better? I have read that the 1000 is not as "good" as the other models but I have not been able to find any comparisons the D-series amps and I know they can be had a whole lot cheaper.

Thanks!

Brad
post #4960 of 4970
Quote:
Originally Posted by brussell View Post

I currently have a Crown XLS 402 that I'm running bridged mono to a Polk CS400 for my center and a Behringer EP2500 running stereo to a pair of Polk RT55s as my mains. The EP2500 will eventually power an IB sub to replace my current sub when I can scrape together funds for the drivers. I have a Yamaha RX-A700 running as a pre/pro and powering a set of Polk RT55s as rear surrounds and a pair of Polk RT7s as front presence speakers. My room will not allow for a set of rear effect speakers.

In the mean time I have been thinking about amps again. I have been debating between a couple more XLS 402s or the new Drivecore 1500s. My question is if you had an amp for each channel would you run them bridged mono to each speaker or run them in stereo but bi-amped? Also, are the Drivecores that much better? I have read that the 1000 is not as "good" as the other models but I have not been able to find any comparisons the D-series amps and I know they can be had a whole lot cheaper.

Thanks!

Brad

I'd probably not do either, the presumption you're after more power.

1. Running the amps "biamped" is a waste of the amp because it doesn't add any meaningful power.
2. Running the XLS 402 bridged is 900W. That's a lot of power for what seems to be a pair of bookshelf-like speakers.

Want new amps, fine, your call, but I'd get ones with sufficient wpc to just run them in stereo mode if using them for your fronts, center, surrounds, etc. Subs, well, bridged amps are common there where you're really needing some power.
post #4961 of 4970

Hi, can you elaborate on the fan mod you made to the QSC GX5, which fan model number you used and the steps for installation? Thanks, I just bought a GX5 and the fan whine is driving me nuts!

post #4962 of 4970
Hello.
The fan mod is quite simple and has been documented in the theard a few times. I believe there is a youtube video as well. ~10-15 screws, a snip, pull the old fan, a solder (or crimp-two wires), reinstall.

http://www.digikey.com/product-detail/en/3110SB-05W-B20-E00/P14751-ND/2615564
post #4963 of 4970

Not as easy as you make it sound...can't find the utube video, hardest part seems to be separating the stock fan from the fan shroud, once that's done, it seems straight forward, don't want to break off the plastic attachers that hold the original fan to the shroud...I want to be able to re-attach the stock fan if I need warranty work, so I need to remove the stock fan and attach the new fan via the 2 pin connector

post #4964 of 4970
Try a small screwdriver. Pry slowly and evenly.
post #4965 of 4970
wow, this thread is still going? smile.gif
post #4966 of 4970

Ok, thanks, I'll try. I obviously missed the thread on this from a few years ago, can you give me the link to where it is? Thanks

post #4967 of 4970

Hi, I never saw the original threads on this, if you have the link, I'd like to read up on them.

post #4968 of 4970

Thanks for the link to the fan at digikey, that fan has only 19 db and moves a small amount of air, I can't seem to get the CFM or the db factor on the Redd fan that's stock on this unit, I don't want to under-cool it if I'm driving the amp hard. I ordered a fan that pushes 50 CFM, dba is 40, I'll report back as to how that fan works.

post #4969 of 4970

~~The fan on a stock GX7 is a SUPERRED 8025 CHA8024EBN-K(E) 24V, 0,24A 80x80x25mm. There seem to be no CFM or dba posted anywhere online, but I want to replace it with a fan that is quieter of course, but pushes at least as much air as the original.

post #4970 of 4970

Success! Removed the stock fan and replaced it with this: http://www.digikey.com/product-search/en?x=0&y=0&lang=en&site=us&KeyWords=p14753-nd .The stock fan apparently pushed about 37 CFM so I wanted the replacement to blow at least that much air, and still be virtually silent, this one pushes 41.3 CFM and the noise level is only 30 dba, I have to put my ear up to the vents to make sure it's running and it's keeping the amp COOL! Thanks for all your help, forum guys...Hardest part was finding a 2 pin adapter to connect to the circuit board, snipped off the fan wires and 2 pin adapter from an old cell phone battery and spliced it on to the bare wires on the Digikey fan, perfect solution! Kept the stock fan intact in case I need service under warranty, I can just replace the mod fan with the stock fan before I send it in for repairs, if that even happens.

New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Receivers, Amps, and Processors
AVS › AVS Forum › Audio › Receivers, Amps, and Processors › New amp is making me grin from ear to ear =)