here's an interesting amp thread, brought to you by...

d911 · « **Reply #40 on:** 28 May 2003, 03:41 am »

Quote from: Jay S

Very reasonable price! If nothing else this would make an awesome sub amp. But, they do say it is a very musical amp so maybe this is a breakthrough price:performance product.

Pro audio does seem to be an untapped source for home audio, if nothing else then as platforms for mods. The ART DI/O is a great case in point.

It is far to good to relegate to just a sub-amplifier. Also I am a former owner of the Joule Electra LA 100 preamp

Regards,
Don

d911 · « **Reply #41 on:** 28 May 2003, 03:43 am »

Quote from: doug s.

"But i didn't know they would allow the thread, then make it difficult for people to find the thread."

don, when ya posted that thread, it looked like an innocent-enuff thread to a-gon. but, when they realized it was a platform to adwertize yer mods, well, it was only a matter of time before it was gone!

regards,

doug s.

gottcha

ABEX · « **Reply #42 on:** 28 May 2003, 05:45 am »

I'll wait for the feedback from unbias'd sources before taking any sort of opinion.

$300 for the stock amp and $500 for the Mods,is that the cost?

As I stated in a post before ,there are alot of great affordable amps .I am waiting for the new LeAmpII's which should be awesome for $400. If they do not do it for the Mids\Highs they should certainly do it for Bass in my horzontal amp setup.

Happy listening!

Jay S · « **Reply #43 on:** 28 May 2003, 05:55 am »

Not too many Joule owners out there! I had read great things about the LA100 when I was doing my research on what to buy. This weekend I will compare the Joule to a DACT-based passive pre in my system.

My system is something of an acid test for a passive pre - my amp has an input impedance of 8k ohms and my speakers are 86 db/watt (in)efficient. What does work in my favor is that my ICs are not terribly long (1m from source to pre, 1m from pre to amp).

Yes, the Beringer may be too good to use as a sub amp but I guess that having the same type of amp for mains as well as sub will make it easier to match level as well as gain.

d911 · « **Reply #44 on:** 28 May 2003, 02:56 pm »

Quote from: ABEX

I'll wait for the feedback from unbias'd sources before taking any sort of opinion.

$300 for the stock amp and $500 for the Mods,is that the cost?

As I stated in a post before ,there are alot of great affordable amps .I am waiting for the new LeAmpII's which should be awesome for $400. If they do not do it for the Mids\Highs they should certainly do it for Bass in my horzontal amp setup.

Happy listening!

The amp costa about $220 delivered street price. We area all entitled to our likes dislikes, I (not trying to be fauxnaif) really hope you enjoy the amp of your choice:)

Best regards,
Don

d911 · « **Reply #45 on:** 28 May 2003, 02:58 pm »

Quote from: Jay S

Not too many Joule owners out there! I had read great things about the LA100 when I was doing my research on what to buy. This weekend I will compare the Joule to a DACT-based passive pre in my system.

My system is something of an acid test for a passive pre - my amp has an input impedance of 8k ohms and my speakers are 86 db/watt (in)efficient. What does work in my favor is that my ICs are not terribly long (1m from source to pre, 1m from pre to amp).

Yes, the Beringer may be too good to use as ...

Joule Electra makes nice gear. In my quote of "it may be too good to relegate to subwoofer use", I was referring to the ART amp as I have not heard the Beringer

Regards,
Don

Jay S · « **Reply #46 on:** 28 May 2003, 03:14 pm »

Wow, for $220 street its sure worth a try! Wonder if they have them in Hong Kong. Would be a great amp, perhaps for biamping... get 2 of them plus an active XO...

not for my system, of course...

d911 · « **Reply #47 on:** 28 May 2003, 03:34 pm »

Quote from: Jay S

Wow, for $220 street its sure worth a try! Wonder if they have them in Hong Kong. Would be a great amp, perhaps for biamping... get 2 of them plus an active XO... not for my system, of course...

Active crossover...Now you're talking. That is what I am planning for the Reference monitor speakers I am designing. These amps are wonderfully musical.

Best regards,

Don

ABEX · « **Reply #48 on:** 28 May 2003, 11:02 pm »

I was going to go Active. It seems the most logical thing to do for many reasons, but it was kinda difficult in my setup.

I will look into building my own.

ABEX · « **Reply #49 on:** 28 May 2003, 11:06 pm »

Could someone post a link with a Photo of this amp.

Could you share on what the stock versions specs are?What the Specs are after moding and what exactly is the moding? Like what components and other stuff is changed?

I have a B&K that is modded and it does what I need.Alot better than the stock version. About the only fault is Bass could be alittle better. Comes very close to a Krell.

nature boy · « **Reply #50 on:** 28 May 2003, 11:53 pm »

Abex and others,

Here is a link that provides information on specifications from

http://www.artroch.com

When you get into the site click on audio products at the top, then select power amplifiers about 1/2 way down the list, and then under products in upper right hand corner select the ART SLA-1. This has an overview, specifications, downloads, and pictures. A well designed informative site.

NB

d911 · « **Reply #51 on:** 29 May 2003, 12:43 am »

Quote from: ABEX

Could someone post a link with a Photo of this amp.

Could you share on what the stock versions specs are?What the Specs are after moding and what exactly is the moding? Like what components and other stuff is changed?

I have a B&K that is modded and it does what I need.Alot better than the stock version. About the only fault is Bass could be alittle better. Comes very close to a Krell.

I will be posting pictures of the modded units in the near future. I will paste an email I sent a customer a while back which talks about the mod a little. As far as specs, they remain about the same. You know what they say about specs, "You can't hear an oscope reading"

Stock specas are as follows: 100w@8ohm- 130w@4ohms , 260w bridged into 8ohms.

Mod stuff:

I perform a mod on the bipolar power supply. I use XXX
caps, the size of coke cans with very low ESR (effective series resistance)
and a very high end XXX. The binding posts are reworked and the 1/4"
phono plugs are replaced with Cardas RCA's. Strategic weak points on the
pcb's are augmented with point to point wiring, as the traces in some spots
are like tinker toys. The operational amplifiers are replaced with much
nicer sounding units, and I place sockets on the board so that you can
change the op amps should we discover even better sounding units. The fan
unit is removed along with the half wave rectifier which injects a ton of
noise back into the transformer core. The switch is bypassed inleu of a
very high end XXX amp breaker. The fuse is also removed as it is a strangle
hold on the sound. The caps are very large and act as a dead short until
they charge up (hence the XXX amp breaker), but the power supply is very very
stiff and the unit literally sounds like a 700watt amplifier. Other sound
enhancing mods are performed as well.

Best regards,
Don

ABEX · « **Reply #52 on:** 29 May 2003, 03:43 am »

I would not use this to drive my speakers or Bass Drivers I do not think.Can it drive a 2ohm load?
If it is clear in the upper frequencies with no veiling I might be able to use it for the Mid\High Drivers.

100watts@8ohms and 130watts@4ohms is not really outstanding performance.

The reason I want the LeAmpII's is it's ability to double it's output power with each halving of Impedance along with Toshiba Transistors and powerful Transformers.

Is this amp Bias'd high into ClassA or is it ClassA?

What Class of Amp is this and what are the Transistors being used?

What kind of ampere performance does it have?

TIA ,ABEX

d911 · « **Reply #53 on:** 29 May 2003, 03:59 am »

Quote from: ABEX

I would not use this to drive my speakers or Bass Drivers I do not think.Can it drive a 2ohm load?
If it is clear in the upper frequencies with no veiling I might be able to use it for the Mid\High Drivers.

100watts@8ohms and 130watts@4ohms is not really outstanding performance.

The reason I want the LeAmpII's is it's ability to double it's output power with each halving of Impedance along with Toshiba Transistors and powerful Transformers.

Is this amp Bias'd high into ClassA or is it ClassA?

...

It is not spec'd from the factory for a 2ohm load. So this is probably not the product for you. You seem to already be set on the LeAmp so that is probably your best bet.

Regards,
Don

d911 · « **Reply #54 on:** 31 May 2003, 04:24 pm »

The new site is up and you is Paypal enabled. The good old folks over at Audiogon removed the thread. I would love feedback on the new site as I massage it over the next few days/weeks. www.dn-audio.com

Thanks,
Don

nature boy · « **Reply #55 on:** 31 May 2003, 04:33 pm »

Don,

The new web site looks great! Congratulations.

NB

d911 · « **Reply #56 on:** 31 May 2003, 04:37 pm »

Quote from: nature boy

Don,

The new web site looks great! Congratulations.

NB

Thank you so much. I pretty much spent most of yesterday developing it and I know I still have a lot of work ahead of me. I met my goal of getting it running and with e-com capabilities.

Thanks again,
Donald Nance Jr.

JackStraw · « **Reply #57 on:** 31 May 2003, 05:49 pm »

Kudos on arranging for shipment of the stock amps right to you. That really takes a lot of the headache out of the mod approach. I'm surprised that more modders don't do this.

So, who's biting on this? We need some unbiased (no offense Don) comparisons. I'd go in on a shiparound trial (a la Bolder's Mensa DAC)... I think that this would really pay off for you in spades.

d911 · « **Reply #58 on:** 31 May 2003, 05:59 pm »

Quote from: JackStraw

Kudos on arranging for shipment of the stock amps right to you. That really takes a lot of the headache out of the mod approach. I'm surprised that more modders don't do this.

So, who's biting on this? We need some unbiased (no offense Don) comparisons. I'd go in on a shiparound trial (a la Bolder's Mensa DAC)... I think that this would really pay off for you in spades.

Thanks for the congrats. You should start seeing some posts very soon from some of my early adopters. I decided to completely redesign the back panel completely replacing the panel supplied with the stock unit. This allows for better integration of the new Cardas parts and a more finished look to the product. Overall the presentation is very finished looking. I will investigate a "shiparound trial". I have to be sure that I will get the unit back. There are always a couple of dishonest souls out there that spoil it for the mostly decent folks out there

Thanks,

Donald Nance Jr
www.dn-audio.com

JackStraw · « **Reply #59 on:** 31 May 2003, 06:11 pm »

Quote from: d911

I will investigate a "shiparound trial". I have to be sure that I will get the unit back. There are always a couple of dishonest souls out there that ...

Agreed... but check out what Wayne is doing with his Mensa DIO (www.boldercables.com). He's taking credit card #s "just in case". Also check out what was done with the DeZorel on total faith. But, this will really get some quick feedback for you and (if all goes as it seems you would expect) really get you busy with lots of orders.

Good luck!