Klipsch La Scala

Duck-Twacy · 2nd December 2002, 09:50 AM

Hi,

Will the Klipsch La Scala be a good match for an Aleph5, or will I never get te amp "quite" enough for the high sensitivity of these speakers (104 db/1 watt)??
I am planning to use that pi filter (CLC) thing with 8 * 22000 uF per channel (and a "L" of around 2-3 mH).

Also the impedance has a dip of 4.5 ohm around 55 Hz and a peak of 42 ohm around 2150 Hz. Is that a problem?

Elso Kwak · 2nd December 2002, 10:19 AM

Hi Duck-Twacy,
Klipsch loudspeakers are extremely unforgiving for bad electronic gear. I speak of experience as I own a pair of Klipschorns.
My greatest sin was selling a pair of Scala's to a custumer owning a Yamaha receiver. It sounded so painfull that I left his appartment in a hurry.......

I settled for a Gas Ampzilla after I found that a cheap Sony integrated amp sounded horrible. Then bought a Crown D-150, then SAE MkIV-DM.
I still own the Ampzilla and it is better than the latest space heater from Krell.
The Ampzilla seems to have a tube like sound quality. My friend has a VTL MONSTER with 12(!) ouput tubes per channel and much to my surprise the VTL sounded very similar to the Ampzilla. The latter had better controlled bass and highs. The VTL had smoother voices. I am not familiar with Aleph 5. My friend had a Pass design 20 years ago that sounded slightly less than the Ampzilla. I don't remember the model#.
A Pi-filter will for sure make the amplifier more quiet. I did that on the Ampzilla with 15 mH chokes. Ripple voltage on the supply is <B>MUCH</B> lower.

The rising impedance is due to the autotransformer in the crossover. It will do no harm but I left it out in my KWAK-CROSSOVER. If interested I can send you the schematic.

LaMa · 2nd December 2002, 11:56 AM

The selfnoise during idling of the amp becomes also a problem if the amp isn't proper build. 104 dB/W/m implies you can settle with much less power e.g. a low powered Zen, alephx or tubegear.

fcel · 2nd December 2002, 12:40 PM

It has been my experience that the Zen amp (version 1) works great on the Klipsch Forte' speakers (sensitivity of about 100db/1w) and it's capable of amazing amount of bass from just 10w/ch.

Nelson Pass · 2nd December 2002, 04:35 PM

We keep a pair of La Scala's for a reference, and they
are indeed unforgiving of electronics. Alephs and Zens
with quiet power supplies are excellent choices.

Duck-Twacy · 2nd December 2002, 05:44 PM

Thanx for all the replies.

Of course a 60 watt Aleph5 is a bit of an overkill for these speakers (Aleph3 would be sufficient), but I allready started the Aleph5 (actually I am, or "we are", in the stage of ordering parts).

Still dont know if I will buy the La Scala's. I like the dynamic sound, but I'm affraid I am too much of a beginner in electronics to get the amp quiet enough. They are also quite expensive (even second hand).

btw somewhere there was a thread about how to calculate the CLC (pi) filters. maybe somebody can point me to it (cant find it).

cyclotronguy · 2nd December 2002, 06:03 PM

Nelson neglected to mention the crossover changes to the Klipsch we keep around for reference.

The crossover's were from ALK Engineering (yes this is a shameless product endorsement) and make a HUGE difference...... all for the good.

Cyclotronguy

BrianGT · 2nd December 2002, 06:09 PM

Quote:

Originally posted by cyclotronguy
Nelson neglected to mention the crossover changes to the Klipsch we keep around for reference.

The crossover's were from ALK Engineering (yes this is a shameless product endorsement) and make a HUGE difference...... all for the good.

Cyclotronguy

It is nice how they publish the updated crossover design for those to make themselves. Is this the same crossover that you are using with them?

http://www.alkeng.com/dload/xover.zip
from
http://www.alkeng.com/klipsch.html

--
Brian

SvErD · 2nd December 2002, 06:16 PM

Quote:

Originally posted by Duck-Twacy
Thanx for all the replies.

btw somewhere there was a thread about how to calculate the CLC (pi) filters. maybe somebody can point me to it (cant find it).

Try Supply voltage/Current draw(mA) gives the coil value in mH.
Svein

cyclotronguy · 2nd December 2002, 06:31 PM

Thanks BrianGT

That is the link for ALK, which I didn't have close at hand at the time of the original post. If you clone ALK crossovers from the on line schematics, please do not use lesser parts.

La Scala's usually respond well to upgraded wiring. The original connections with time degrade and should be cleaned and soldered.

Cyclotronguy

2nd December 2002, 09:50 AM	#1
Duck-Twacy diyAudio Member Join Date: Oct 2002 Location: Holland, The Hague	Klipsch La Scala Hi, Will the Klipsch La Scala be a good match for an Aleph5, or will I never get te amp "quite" enough for the high sensitivity of these speakers (104 db/1 watt)?? I am planning to use that pi filter (CLC) thing with 8 * 22000 uF per channel (and a "L" of around 2-3 mH). Also the impedance has a dip of 4.5 ohm around 55 Hz and a peak of 42 ohm around 2150 Hz. Is that a problem? __________________ Is that all there is?

2nd December 2002, 10:19 AM	#2
Elso Kwak Banned Join Date: Dec 2001 Location: Zamboanga, City of Flowers, Mindanao	Klipsch and Amplifiers Hi Duck-Twacy, Klipsch loudspeakers are extremely unforgiving for bad electronic gear. I speak of experience as I own a pair of Klipschorns. My greatest sin was selling a pair of Scala's to a custumer owning a Yamaha receiver. It sounded so painfull that I left his appartment in a hurry....... I settled for a Gas Ampzilla after I found that a cheap Sony integrated amp sounded horrible. Then bought a Crown D-150, then SAE MkIV-DM. I still own the Ampzilla and it is better than the latest space heater from Krell. The Ampzilla seems to have a tube like sound quality. My friend has a VTL MONSTER with 12(!) ouput tubes per channel and much to my surprise the VTL sounded very similar to the Ampzilla. The latter had better controlled bass and highs. The VTL had smoother voices. I am not familiar with Aleph 5. My friend had a Pass design 20 years ago that sounded slightly less than the Ampzilla. I don't remember the model#. A Pi-filter will for sure make the amplifier more quiet. I did that on the Ampzilla with 15 mH chokes. Ripple voltage on the supply is <B>MUCH</B> lower. The rising impedance is due to the autotransformer in the crossover. It will do no harm but I left it out in my KWAK-CROSSOVER. If interested I can send you the schematic.

2nd December 2002, 05:44 PM	#6
Duck-Twacy diyAudio Member Join Date: Oct 2002 Location: Holland, The Hague	Thanx for all the replies. Of course a 60 watt Aleph5 is a bit of an overkill for these speakers (Aleph3 would be sufficient), but I allready started the Aleph5 (actually I am, or "we are", in the stage of ordering parts). Still dont know if I will buy the La Scala's. I like the dynamic sound, but I'm affraid I am too much of a beginner in electronics to get the amp quiet enough. They are also quite expensive (even second hand). btw somewhere there was a thread about how to calculate the CLC (pi) filters. maybe somebody can point me to it (cant find it). __________________ Is that all there is?

2nd December 2002, 06:03 PM	#7
cyclotronguy diyAudio Member Join Date: Sep 2001 Location: Northern California	Klipsch Nelson neglected to mention the crossover changes to the Klipsch we keep around for reference. The crossover's were from ALK Engineering (yes this is a shameless product endorsement) and make a HUGE difference...... all for the good. Cyclotronguy

2nd December 2002, 06:31 PM	#10
cyclotronguy diyAudio Member Join Date: Sep 2001 Location: Northern California	ALK Engineering Thanks BrianGT That is the link for ALK, which I didn't have close at hand at the time of the original post. If you clone ALK crossovers from the on line schematics, please do not use lesser parts. La Scala's usually respond well to upgraded wiring. The original connections with time degrade and should be cleaned and soldered. Cyclotronguy


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

2nd December 2002, 11:56 AM	#3
LaMa diyAudio Member Join Date: Sep 2002 Location: NL	The selfnoise during idling of the amp becomes also a problem if the amp isn't proper build. 104 dB/W/m implies you can settle with much less power e.g. a low powered Zen, alephx or tubegear.

2nd December 2002, 12:40 PM	#4
fcel diyAudio Member Join Date: Sep 2001 Location: LA County	It has been my experience that the Zen amp (version 1) works great on the Klipsch Forte' speakers (sensitivity of about 100db/1w) and it's capable of amazing amount of bass from just 10w/ch.

2nd December 2002, 04:35 PM	#5
Nelson Pass The one and only Join Date: Mar 2001	We keep a pair of La Scala's for a reference, and they are indeed unforgiving of electronics. Alephs and Zens with quiet power supplies are excellent choices.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
KLIPSCH RF-3 35 25 and ZEN's?	dshortt9	Multi-Way	13	3rd August 2011 03:29 PM
kilpsch la scala	akersa	Multi-Way	13	18th March 2010 11:30 AM
Klipsch La Scala Help	t-head	Multi-Way	6	2nd April 2008 06:07 AM
bass section horn klipsh la scala	jbsteeple	Multi-Way	2	31st July 2006 05:28 PM
WTB - Klipsch K-33's	smccull	Swap Meet	1	21st May 2004 03:18 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read