'Perceive' Contruction Diary - Page 10

Mutley666 · 12th April 2005, 09:11 AM

I have found this German site rather good for bits and pieces.

As they are part of the EU, you don't have to worrry about being charged import duties on delivery either.

www.lautsprechershop.de

studiotech · 19th April 2005, 01:05 AM

ShinOBIWAN,

Have you made any good progress? I seem to remember that you said you had last week off, so how did it go? I am dying to see more updates.

Greg

ShinOBIWAN · 19th April 2005, 02:42 AM

Quote:

Originally posted by studiotech
ShinOBIWAN,

Have you made any good progress? I seem to remember that you said you had last week off, so how did it go? I am dying to see more updates.

Greg

Cheers for the interest Greg.

Sorry but I hardly managed anything last week, infact the cabinets are essentially untouched from my last posting. The only thing I've really done is finished up all the soldering on the amps and ordered a few more bits including caps, toroidal's and somemore boards from ESP.

In the end I had to work from Wednesday onwards because my second took ill, then we went away over the weekend.

I'm extremely busy for the next week or two catching up on the workload after last weeks hickup. So I really doubt I'll have anything more to show soonish.

Pop back in a couple of weeks and I'll definitely have more to show around that time.

ShinOBIWAN · 26th April 2005, 01:22 AM

Hello again all,

Had a little time to finish all the amps off and, this evening, tested two of them.

Some problem along the way but thanks to the help of PM and Rich, I got them sorted.

These are absolutely fantastic, a real control to them. I've had them rigged up to the active XO along with the Scan & ATC, no Seas as the bass cabinets aren't finished yet.
I've settled on what I think is the best frequency for the most natural and open sound between the ATC and scan, and that is 3100hz.
Did try 1850hz - the ATC is clearly a better performer than the scan in this area so the sound is somewhat 'thin' using this point. Also tried 2400hz, better but I think that ATC really deserves more of the frequency range - its that good.

Undoubtably the best mid & treble I've heard, quite a nice improvement over the passive XO too. But that is all I can tell from just listening to one speaker with limited bass response.

Really going to have to get these finished, can't wait to hear something in stereo and with a little bass

edjosh23 · 26th April 2005, 03:35 AM

ShinOBIWAN,

congrats, lets see some photos.

Are all 3 amps going to be mounted in the back of the speakers?

Josh

ShinOBIWAN · 26th April 2005, 03:52 AM

Quote:

Originally posted by edjosh23
ShinOBIWAN,

congrats, lets see some photos.

Are all 3 amps going to be mounted in the back of the speakers?

Josh

Cheers Josh,

Will get some photo's of the finished amps up tommorow sometime.

Your right about the amps, they're going in the back, along with all the boards. I'm going for a self contained speaker in much the same vein as many of the active studio monitors. Just turn on and then plug in your pre-amp/source and off you go.

I'm having a bit of a nightmare with quite a loud buzz from the amps at the moment though, probably a ground issue. But its audible from quiet some distance (3-4meters). Obviously this won't do for the and unless I get it sorted I may have to rethink.

Anyone with advice on this?

edjosh23 · 26th April 2005, 04:09 AM

Are you going to have to reach behind each speaker to turn on, or are you going to plug them into your preamp and have your preamp turn them on?

Is the noise coming from the amp itself or the speaker connected?

Good Luck, and you always reply very fast

Josh

ShinOBIWAN · 26th April 2005, 04:17 AM

Quote:

Originally posted by edjosh23
Are you going to have to reach behind each speaker to turn on, or are you going to plug them into your preamp and have your preamp turn them on?

Is the noise coming from the amp itself or the speaker connected?

Good Luck, and you always reply very fast

Josh

I've been virtually living on this forum since I started these and email alerts are a good idea

Also hoping someone was offering advice on this damned buzz.

Yes the power switch will be on the rear, no plans to implement a trigger or auto-off. Would be nice but I've already overstepped my abilities with regards to building the amps. There's a first time for everything though.

The buzz is comming from the speakers not the amps, although the way I worded it made it sound different.

edjosh23 · 26th April 2005, 04:29 AM

How is your dc offset?

does your toroid make a lot of noise?

Josh

ShinOBIWAN · 26th April 2005, 03:59 PM

Quote:

Originally posted by edjosh23
How is your dc offset?

does your toroid make a lot of noise?

Josh

DC offset is 4mV.

Torroid is as quiet as a mouse, no buzzing.

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12th April 2005, 09:11 AM	#91
Mutley666 diyAudio Member Join Date: Nov 2004 Location: Sunny Birmingham	I have found this German site rather good for bits and pieces. As they are part of the EU, you don't have to worrry about being charged import duties on delivery either. www.lautsprechershop.de

19th April 2005, 01:05 AM	#92
studiotech diyAudio Member Join Date: Jun 2004 Location: Orlando, FLA	ShinOBIWAN, Have you made any good progress? I seem to remember that you said you had last week off, so how did it go? I am dying to see more updates. Greg

26th April 2005, 01:22 AM	#94
ShinOBIWAN diyAudio Member Join Date: Feb 2004 Location: UK	Hello again all, Had a little time to finish all the amps off and, this evening, tested two of them. Some problem along the way but thanks to the help of PM and Rich, I got them sorted. These are absolutely fantastic, a real control to them. I've had them rigged up to the active XO along with the Scan & ATC, no Seas as the bass cabinets aren't finished yet. I've settled on what I think is the best frequency for the most natural and open sound between the ATC and scan, and that is 3100hz. Did try 1850hz - the ATC is clearly a better performer than the scan in this area so the sound is somewhat 'thin' using this point. Also tried 2400hz, better but I think that ATC really deserves more of the frequency range - its that good. Undoubtably the best mid & treble I've heard, quite a nice improvement over the passive XO too. But that is all I can tell from just listening to one speaker with limited bass response. Really going to have to get these finished, can't wait to hear something in stereo and with a little bass

26th April 2005, 03:35 AM	#95
edjosh23 Minimalist diyAudio Member Join Date: Oct 2004 Location: Raleigh/Atlanta	ShinOBIWAN, congrats, lets see some photos. Are all 3 amps going to be mounted in the back of the speakers? Josh

26th April 2005, 04:09 AM	#97
edjosh23 Minimalist diyAudio Member Join Date: Oct 2004 Location: Raleigh/Atlanta	Are you going to have to reach behind each speaker to turn on, or are you going to plug them into your preamp and have your preamp turn them on? Is the noise coming from the amp itself or the speaker connected? Good Luck, and you always reply very fast Josh

26th April 2005, 04:29 AM	#99
edjosh23 Minimalist diyAudio Member Join Date: Oct 2004 Location: Raleigh/Atlanta	How is your dc offset? does your toroid make a lot of noise? Josh

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