Johan's Phase Linear 700B Fully Comp Conversion

[derek92994]

Actually after reading through the entire thread and looking at all the pictures it really amazes me how much goes into one of these beasts. I don't know much about soldering and board work but it sure looks super neat to me, great job Lee. First power up would be a bit nerve racking I bet. Must be rewarding to see those super test figures after all that hard work though and the owners face when they first hear it.

 

[johan1212]

I like the badges, but I really like the 'see-through' idea……

...yeap......that woulsd look very cool i think....i ll try to make it next week...engraving it reverso on inside...flat finish....light from leds will hit the sand blasted logo...will be nice...

 

[johan1212]

Me too.

will find a similar see trough with my see trough plexi top....lol...to hold my hand at first listening....lol...

 

[Phase Linear Phanatic]

The engraver I use does plastic sheets only. It will not do plexi glass. Or a total go through. It's designed for back pan tags/legend plates that are used in electrical panels. I could makea plactic engraved replacement top exactly like the original with the etching already in it but...........a plastic engraved top........ I think may not sit well with heat from inside an amp I'll bet. A see through plexi top is a neat idea.

My labels are basic and intended for the many conversions that Lee will probably do this year. They are to perhaps be stuck on the inside of the amp as a means to identify a "modification". To replace the yellow sticky notes he uses. Something nice for him. Anything more extravagant and flashy will like he said, be up to the customer. As they can do with it what they want. Not all may want to replace an original amp top. So a small legend plate like this will be easy for him to put in the amp. He can let me know what exactly what he wants it to say and look like. THESE are just beginner samples.

Sure you can have one if you want Johan. But you don't have to BUY it from me. Just shoot me a PM. The rest will go to Lee.

 

[johan1212]

The engraver I use does plastic sheets only. It will not do plexi glass. Or a total go through. It's designed for back pan tags/legend plates that are used in electrical panels. I could makea plactic engraved replacement top exactly like the original with the etching already in it but...........a plastic engraved top........ I think may not sit well with heat from inside an amp I'll bet. A see through plexi top is a neat idea.

My labels are basic and intended for the many conversions that Lee will probably do this year. They are to perhaps be stuck on the inside of the amp as a means to identify a "modification". To replace the yellow sticky notes he uses. Something nice for him. Anything more extravagant and flashy will like he said, be up to the customer. As they can do with it what they want. Not all may want to replace an original amp top. So a small legend plate like this will be easy for him to put in the amp. He can let me know what exactly what he wants it to say and look like. THESE are just beginner samples.

Sure you can have one if you want Johan. But you don't have to BUY it from me. Just shoot me a PM. The rest will go to Lee.

hi did you get my pm.?thx

 

[johan1212]

The engraver I use does plastic sheets only. It will not do plexi glass. Or a total go through. It's designed for back pan tags/legend plates that are used in electrical panels. I could makea plactic engraved replacement top exactly like the original with the etching already in it but...........a plastic engraved top........ I think may not sit well with heat from inside an amp I'll bet. A see through plexi top is a neat idea.

My labels are basic and intended for the many conversions that Lee will probably do this year. They are to perhaps be stuck on the inside of the amp as a means to identify a "modification". To replace the yellow sticky notes he uses. Something nice for him. Anything more extravagant and flashy will like he said, be up to the customer. As they can do with it what they want. Not all may want to replace an original amp top. So a small legend plate like this will be easy for him to put in the amp. He can let me know what exactly what he wants it to say and look like. THESE are just beginner samples.

Sure you can have one if you want Johan. But you don't have to BUY it from me. Just shoot me a PM. The rest will go to Lee.

.


got my pm.?....thx.

 

[laatsch55]

The engraver I use does plastic sheets only. It will not do plexi glass. Or a total go through. It's designed for back pan tags/legend plates that are used in electrical panels. I could makea plactic engraved replacement top exactly like the original with the etching already in it but...........a plastic engraved top........ I think may not sit well with heat from inside an amp I'll bet. A see through plexi top is a neat idea.

My labels are basic and intended for the many conversions that Lee will probably do this year. They are to perhaps be stuck on the inside of the amp as a means to identify a "modification". To replace the yellow sticky notes he uses. Something nice for him. Anything more extravagant and flashy will like he said, be up to the customer. As they can do with it what they want. Not all may want to replace an original amp top. So a small legend plate like this will be easy for him to put in the amp. He can let me know what exactly what he wants it to say and look like. THESE are just beginner samples.

Sure you can have one if you want Johan. But you don't have to BUY it from me. Just shoot me a PM. The rest will go to Lee.

Dave....thank you, very thoughtful. I like em just how they are. You read my mind...the side panel is my preferred site...

 

[Phase Linear Phanatic]

Johan, I got your PM. I'll shoot it to you on monday.

Lee; shoot me a PM as well and I'll send you the rest of the sheet. Let me know how they work or if you need any changes. -PLP

 

[laatsch55]

Thanks Dave, still pretty damn cool, thanks..

 

[Phase Linear Phanatic]

Thanks Dave, still pretty damn cool, thanks..

Waiting on your PM Lee. Need a "ship to:"........................

 

[laatsch55]

Oh....

 

[laatsch55]

Well, Johan will have one advantage to waiting sooooo long. The PS caps are here. They are now holding 140 volts, my variac goes to 140. So he'll have new caps when it goes out Monday..

 

[Phase Linear Phanatic]

I just got my four today. The bulk caps right? All I need are some WO boards and the rest of the parts. My own conversions are on the horizon soon.............

 

[laatsch55]

You'll be tickled Bud. Shakin down Johans' 700 again. Been 10 days, I have virgin ears....DAYAM!! Life is good....tunes like this we used to only dream about!! Coolness...


New amp test tune------"Moby"----on the CD "Play" track 4 has a killer bass passage as good a any Shpongle bass....literally SHAKES the F*&^%$ house...

 

[Phase Linear Phanatic]

I bought that CD new when it first came out. A very good album. Still have the CD. Makes the needles BOUNCE!

Your tags will be sent out Monday sir. Enjoy! -PLP

 

[Skynyrd77]

Ok guys see if you can help me understand better!! I copied this off ak just now. It's a carver 6250 receiver . But had all the rating. So see if you guys can help me understand what I'm looking at compared to the WOPL specs! Not trying to see which is better just want to understand . So when I see specs I will know what it's tellin me. Hope this makes sence!!!





Specs (courtesy Clmrt - thanks!)


Stereo Review, Feb 1989...Lab measurements -


Tuna section -
Tuner Sens - 13.5dBf
S/N - 67dBf Stereo
Harmonic Distortion - 0.65%
Channel Sep - at 1Khz, 53.5db
Freq Response - 30-15Khz


Amp section -
2x125w/ch into 8 ohm
Output at clipping, 1Khz - 156, 175, 195w into 8-4-2 ohms
Dynamic output - 248, 350w into 8-4 ohms
Distortion at 125 watts - 0.045%


Generally positive review.




http://www.carveraudio.com/index.php/receivers/6250


The Carver site says:


8-ohm FTC rated power/ch 125 W
4-ohm FTC rated power/ch 140 W
2-ohm dynamic power/ch 145 W
4/8-ohm FTC rated THD 0.1 %
Rated full power bandwidth 20-20kHz
S/N-IHF A-Weighted,dB 90
Slew Rate 180
Dimensions (HxWxD inches) 19x5.5x18
Comments Stereo receiver. Anthracite finish.
Tuner Section
IHF Sensitivity mono/stereo,dBf 10.3/-
Capture ratio,dB 1.5
AM Suppression,dB 62
Alt. ch. sensitivity,dB 72
Seperation at 1kHz,dB 46
THD at 1kHz,stereo 0.09 %
Maximum S/N,stereo,dB 78
Station presets 12
PreAmp Section
Frequency response 20-20kHz +- 1dB
Total Harmonic Distortion See amp section
S/N-IHF A-Weighted See amp section
Phono sensitivity for 0.5V@1kHz 1.5
MM Phono Overload mV 100
Phono input capacitance pF 150
MM S/N A-weighted 0.5v ref. 78
Tone Controls 3-band
Inputs 2 video/5 audio


Comments Sonic Holography


Remote control a/V receiver with sonic holography and ACCD. Silver seven transfer function modified.
Carver magnetic field power section produces 125 watts per channel minimum output, both channels driven
into 8 ohms from 20-20 KHZ with no more than 0.1% THD. 7 segment LED power meters. 2 video inputs W/dubbing
& video monitor output. 7 audio inputs. 6 AM + 6 FM presets W/backup. Asymmetrical charge - coupled FM detection circuit.
Preset scan and auto/Manual tuning. Sonic hologram generator. 3 band tone controls. Dual tape monitors W/dubbing.
Loudness EQ & muting. A/B/A + B speakers selection & headphone output. 26 key remote is compatible W/Carver CD players.

 

[laatsch55]

Throw out the dynamic output rating, it means nothing. Amp section distortion specs are GOOD. Power appears to be 150 watts into 8 before clipping.. The 4 ohm and 2 ohm rating show the power supply is not up to the task of doubling power into 4 ohms and then doubling again into 2 ohms, WHICH is what a properly desighed power supply should provide to the amp section. A lot of factors come into play when you see a rolloff of power into the lower ohm loads. Output devices having a limited current rating, transformer compromises, caps, etc.
A commercial application of any audio desigh is going to be a series of compromises, in essence it has to be to be a commercial success. Therein lies the niche for folks like Joe and his "take no prisoners " approach to his kits.He specs the very best components that he can reliably get, withthe result being what most of you have heard....exceptional sound quality. It does take a lot of effort on the implementation side to make it happen, but the cost savings are worth the effort and it's been shown time and again with the upfront engineering of Joe's, and some situationasl, and personal supervision it can be done by a wide spectrum of folks with varying degrees of expertise.


Sorry for not answering more of your question Jase, tuners and pre sections are still pretty foreign to me, but felt qualified to comment on the amp section...

 

[johan1212]

You'll be tickled Bud. Shakin down Johans' 700 again. Been 10 days, I have virgin ears....DAYAM!! Life is good....tunes like this we used to only dream about!! Coolness...


New amp test tune------"Moby"----on the CD "Play" track 4 has a killer bass passage as good a any Shpongle bass....literally SHAKES the F*&^%$ house...

......my first test will be SADE cd....very good recording.....then a few FAITHLESS....and for sure a few Michael Jackson's intros for the bass....JBL ' L250TI are waiting impatiently..lol...thanks..

 

[laatsch55]

Sorry about the delays Johan.... life shit....

 

[johan1212]

Sorry about the delays Johan.... life shit....

..
no worries at all Lee....not in a rush at all....even if you need a few more days,go ahead...we all like our toys....but there are more important things in life...did you get check in the mail?...