Menu
Forum
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Gallery
New media
New comments
Search media
Members
Registered members
Current visitors
Classifieds Member Feedback
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Log in / Register
Forum
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
Log in / Join
What’s new
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Menu
Reply to thread
Forum
Car Audio Discussion
General Car Audio
thoughts on krell amps?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="thylantyr" data-source="post: 2931353" data-attributes="member: 560358"><p>Best kept secret in home/HT audio {not a secret in pro audio}.</p><p></p><p><a href="http://home.pacbell.net/lordpk/proamps/Crown_CE-4000-1.jpg" target="_blank">http://home.pacbell.net/lordpk/proamps/Crown_CE-4000-1.jpg</a></p><p></p><p><a href="http://home.pacbell.net/lordpk/proamps/Crown_CE-4000-2.jpg" target="_blank">http://home.pacbell.net/lordpk/proamps/Crown_CE-4000-2.jpg</a></p><p></p><p>A guy on AVS just score two of them for his monster HT subwoofer project,</p><p></p><p>those are his amp pics. He replaced the fan with a *quiet* fan, all is sweet.</p><p></p><p>Guess how much he paid on the used market? $660 each. What a deal.</p><p></p><p>Why is this amp so cool?</p><p></p><p>Universal SMPS + PFC + BCA</p><p></p><p>Universal = works with 120VAC or 220VAC input without doing any mods.</p><p></p><p>{if 220VAC used, the amp will do a real 3600 watts}.</p><p></p><p>SMPS = switch mode power supply akin to car amps which use SMPS. More</p><p></p><p>efficient power supply, lighter weight - no need for huge transformers.</p><p></p><p>BCA = akin to full range class D, very efficient design. Crown K series and Crown</p><p></p><p>Itech is also BCA output stage.</p><p></p><p>PFC = Power Factor Correction, in a nutshell, you will get rated power even</p><p></p><p>if your lame house voltage sags under load which causes non-PFC amps to</p><p></p><p>output much less power than advertised. PFC is akin to a regulated power supply.</p><p></p><p><strong>The Challenge</strong></p><p></p><p>Find me a home audio amp that is SMPS, PFC, and BCA {or equivalent},</p><p></p><p>~3,600 watts of real power for under $700.</p><p></p><p>/// evil ///</p><p></p><p>FYI, you probably heard of Crown K1 and K2 amps.</p><p></p><p>Guts here;</p><p></p><p><a href="http://home.pacbell.net/lordpk/proamps/Crown_K2.jpg" target="_blank">http://home.pacbell.net/lordpk/proamps/Crown_K2.jpg</a></p><p></p><p>People loved these amps and they paid $1000 for them, maybe $500 today</p><p></p><p>on the used market.</p><p></p><p>K series is only BCA, not SMPS, not PFC and if you look at the guts, it has</p><p></p><p>no real heatsinks inside. The stupid chassis is the heatsink. The CE4000</p><p></p><p>has real heatsinks and a wind tunnel design.</p><p></p><p>CE1000 or CE2000 are not the same recipes as CE4000. Those are generic designs.</p><p></p><p>The CE4000 was a test bed for what is known today as Crown Itech. They made</p><p></p><p>this amp and disguised it under the CE name to test it in the field. It's discontinued</p><p></p><p>now and Itech's emerged. They added DSP to the recipe and now you pay huge</p><p></p><p>premiums to get that SMPS + PFC + BCA <strong>AND</strong> DSP all in one amp chassis</p><p></p><p>under the Itech models.</p></blockquote><p></p>
[QUOTE="thylantyr, post: 2931353, member: 560358"] Best kept secret in home/HT audio {not a secret in pro audio}. [URL="http://home.pacbell.net/lordpk/proamps/Crown_CE-4000-1.jpg"]http://home.pacbell.net/lordpk/proamps/Crown_CE-4000-1.jpg[/URL] [URL="http://home.pacbell.net/lordpk/proamps/Crown_CE-4000-2.jpg"]http://home.pacbell.net/lordpk/proamps/Crown_CE-4000-2.jpg[/URL] A guy on AVS just score two of them for his monster HT subwoofer project, those are his amp pics. He replaced the fan with a *quiet* fan, all is sweet. Guess how much he paid on the used market? $660 each. What a deal. Why is this amp so cool? Universal SMPS + PFC + BCA Universal = works with 120VAC or 220VAC input without doing any mods. {if 220VAC used, the amp will do a real 3600 watts}. SMPS = switch mode power supply akin to car amps which use SMPS. More efficient power supply, lighter weight - no need for huge transformers. BCA = akin to full range class D, very efficient design. Crown K series and Crown Itech is also BCA output stage. PFC = Power Factor Correction, in a nutshell, you will get rated power even if your lame house voltage sags under load which causes non-PFC amps to output much less power than advertised. PFC is akin to a regulated power supply. [B]The Challenge[/B] Find me a home audio amp that is SMPS, PFC, and BCA {or equivalent}, ~3,600 watts of real power for under $700. /// evil /// FYI, you probably heard of Crown K1 and K2 amps. Guts here; [URL="http://home.pacbell.net/lordpk/proamps/Crown_K2.jpg"]http://home.pacbell.net/lordpk/proamps/Crown_K2.jpg[/URL] People loved these amps and they paid $1000 for them, maybe $500 today on the used market. K series is only BCA, not SMPS, not PFC and if you look at the guts, it has no real heatsinks inside. The stupid chassis is the heatsink. The CE4000 has real heatsinks and a wind tunnel design. CE1000 or CE2000 are not the same recipes as CE4000. Those are generic designs. The CE4000 was a test bed for what is known today as Crown Itech. They made this amp and disguised it under the CE name to test it in the field. It's discontinued now and Itech's emerged. They added DSP to the recipe and now you pay huge premiums to get that SMPS + PFC + BCA [B]AND[/B] DSP all in one amp chassis under the Itech models. [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Discussion
General Car Audio
thoughts on krell amps?
Top
Menu
What's new
Forum list
