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Rec pro audio pultec

PostPosted: Thu Oct 03, 2013 10:46 am
by Lee
Has anyone here ordered any thing from this rec pro audio website?
http://www.recproaudio.com/diy_pro_audi ... _eqp1a.htm

http://www.pulteceqp1a.com/
I'm thinking about buying the pultec. Any thoughts?

Re: Rec pro audio pultec

PostPosted: Thu Oct 03, 2013 12:25 pm
by Junction
If you are considering a kit, here is an alternative and quite a bit cheaper;

http://www.audiomaintenance.com/acatalog/aml-17-022_extended_info.html

Just over $900

Re: Rec pro audio pultec

PostPosted: Thu Oct 03, 2013 10:57 pm
by Lee
Thanks for the link Michael that's temping but do you think it's worth the extra 600 for a hand wired?

Re: Rec pro audio pultec

PostPosted: Thu Oct 03, 2013 11:25 pm
by Junction
I really couldn't comment without hearing them side by side, the iron is going to have a lot to do with the sound, both of which do not have original iron. I notice that the Rec Pro unit has a 6X4 tube rectifier, the audio maintenance one doesn't, so the Rec Pro may be considered a little closer in theory to the original being PTP with the 6X4.

I have an original, so build one and we'll do an A/B comparison, see how they compare.

Michael

Re: Rec pro audio pultec

PostPosted: Fri Oct 04, 2013 10:55 am
by Lee
Thanks Michael I will let you know when I have built one and would love to AB them.

Re: Rec pro audio pultec

PostPosted: Mon Oct 07, 2013 5:37 pm
by drivebystudios
I think they will probably sound a little different...the point to point is the original design, where as the AM pultec is his version (ie no interstage transformer).

G-Pultec is another option for DIY!

Re: Rec pro audio pultec

PostPosted: Mon Oct 07, 2013 10:34 pm
by Junction
drivebystudios wrote: ...the AM pultec is his version (ie no interstage transformer)

Um, think you're wrong there, the AM unit does have an interstage transformer, a 20K:80K VTB2424 Carnhill. The schematic is in the build instructions ;)
http://www.audiomaintenance.com/downloads/ezp-1a_colourbook.pdf

Cheers

Re: Rec pro audio pultec

PostPosted: Tue Oct 08, 2013 8:44 am
by Ben M
GPultec has no interstage. But still sound fantastic.

Re: Rec pro audio pultec

PostPosted: Fri Oct 11, 2013 6:29 pm
by Alistair
Very interested to see what you decide to do here.
I'm currently planning a stereo point to point extended Pultec.

Probably not going to use a valve rectifier, but otherwise I'm planning on using the same circuit as the Rec Pro Pultec, with a few extra frequency points. I'm also tossing up between adding the MEQ-5 filter in there as well, but real estate and inductor costs may stop that plan!

Re: Rec pro audio pultec

PostPosted: Fri Oct 11, 2013 7:17 pm
by Barney Loveland
I've built a stereo SS pultec with the enhanced pultec pcb that's around and JLM dingo boards. I've tried a few opamps, JLM 99V, OPA2604, Pickstone and had planned on trying an output transformer but it already sounds great. Tube or SS it's a great sounding circuit.

Re: Rec pro audio pultec

PostPosted: Tue Oct 15, 2013 2:07 pm
by Alistair
Sounds cool Barney.

Out of interest, how does it compare to the massive passive as a buss EQ?
I'm not naive enough to think I'll anywhere near the precision of a MP, but I am thinking with the right frequencies I could still have that ability to push the top and bottom end pretty hard without any harshness or artifacts.