Comments for The Amp Doctor

Comment on Stop start technology means new modifications required. by Sarah

Sarah — Tue, 30 Sep 2014 09:07:50 +0000

Hi Allan

I have passed your message to Gordon and asked him to reply to you directly by email.

Many thanks
Sarah

Comment on Stop start technology means new modifications required. by allan

allan — Tue, 16 Sep 2014 12:58:48 +0000

i want to use some jl audio slash series amps in my daily runner but is fitted with stop/start. is your modification an internal only or can it be fitted into an additional box. would i need one only or one per amp
thamks allan

Comment on Soundstream Continuum Modifications by Sarah

Sarah — Fri, 12 Sep 2014 18:23:50 +0000

Hi TJ

I have passed your question on to one of our team and asked that they email you with a response. Sorry for the delay.

BR
Amp Dcotor

Comment on Soundstream Continuum Modifications by Tord

Tord — Tue, 09 Sep 2014 19:25:52 +0000

Hey Sarah.
I have a S 705 amps,
Are this amp same built as Continiuum?
How much cost this upgrade ?

Br //

Comment on More Phoenix Gold ZX Modifications by Sarah

Sarah — Mon, 27 Jan 2014 14:24:46 +0000

Hi TKarl,
The main thing on these would be Cap upgrades and bias stability. We sort the bias stability when we do a service which for the 0.3 would be £169.00 and the 0.5 service £229.00
Cap upgrades would be an additional £44.00.
All of the work would come with 1 year warranty, power sheet and include cost of return courier.

I hope this helps and look forard to hearing from you if you would like to proceed.

Kindest regards
Sarah

Comment on More Phoenix Gold ZX Modifications by karl

karl — Mon, 20 Jan 2014 22:15:42 +0000

What improvements can you make to thePhoenix Gold ZPA 0.3 and 0.5?

Thanks

Comment on More Phoenix Gold ZX Modifications by Sarah

Sarah — Thu, 16 Jan 2014 13:47:41 +0000

Hi Allan

Yes some of these modifications would be advantageous, although you wouldn’t really benefit from the sub mods. The cost for Bias upgrade would be £50 and the preamps would need to be quoted for one the amps was here.

Hope this helps

Sarah

Comment on More Phoenix Gold ZX Modifications by Allan coles

Allan coles — Sun, 12 Jan 2014 20:25:48 +0000

Hi Sarah
Last year you did some SQ tweeks on my zx450, would the modification posted on July 25 2013 be a worthwhile addition, can it be done to all zx amps as I have 5 I want to use on an install
Thanks Allan

Comment on Soundstream Continuum Modifications by Viktor

Viktor — Wed, 03 Jul 2013 17:38:16 +0000

Hello again.

Thanks for information.
What is the name of preamps? Is it secret ?
OPA4134 ? OPA2604 ?

Comment on Soundstream Continuum Modifications by Sarah

Sarah — Mon, 01 Jul 2013 15:27:22 +0000

Hi Viktor,
Main upgrades:

We upgraded the main rail caps from 1000uF to 3300uF

Fitted bias adjusters to all channels and set with distortion analyser so crossover distortion was eliminated. We also pushed bias higher on the mid and tweeter channels so they ran in class A at low power.

Preamp chips were upgraded to newer types, TL074 are OK for entry level amps but not really good enough for an amp of this quality.