Service for Crossover Assembly, Wiring and Cables ETC. Southwest California Area

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rinzzlr

You do such great work Fredrick, I enjoy seeing it. Keep it up!

fre11111

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Thank you. I appreciate it.

Frederick

jonaiken

Thanks Frederick I recently received the crossovers you built for my Goldenear BRX’s and they were excellent.  Thanks for your great work. 


 

fre11111

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Thanks Frederick I recently received the crossovers you built for my Goldenear BRX’s and they were excellent.  Thanks for your great work. 


It was a pleasure working with you on your project. Thank you.

Frederick

jmimac351

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  • Chief Instructor - ChinTrackDays.com
NX-Otica MTM that Frederick worked up for me.  I am going to do the final attachment of OUT wiring, per length I need them to be... depending on where / how I want to mount / house the crossovers.


EdwardT

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This upgraded AV123 Xstatik crossover is so clean and orderly. Frederick does beautiful work, it’s a shame to hide it inside the cabinet.

fre11111

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This upgraded AV123 Xstatik crossover is so clean and orderly. Frederick does beautiful work, it’s a shame to hide it inside the cabinet.

Thank you Ed. I appreciate it.

fre11111

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Hi Everyone,

I have been busy lately with crossover builds and life. I also wanted to share that I have recieved several projects that involved building tha crossover and installing the whole kit. Here some photo updates.























Happy weekend and Godbless.

Frederick


oskar

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Very tidy. Very tidy indeed.

fre11111

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jmimac351

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  • Chief Instructor - ChinTrackDays.com
Very tidy. Very tidy indeed.

Frederick does such nice work, he makes me want to build another pair of speakers so I get to have another crossover from him.

Exceptional.  The fact that he's such a nice guy doesn't hurt either.

Anyone reading this... just have Danny send your parts to Frederick and have him do it.  It's not expensive at all and more than covers the cost in value you'll get back out of it if you go to sell your speakers.  If you decide to sell your speakers and build something new, when you post pictures of this kind of work, your "DIY speakers" will easily sell... 

fre11111

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Frederick does such nice work, he makes me want to build another pair of speakers so I get to have another crossover from him.

Exceptional.  The fact that he's such a nice guy doesn't hurt either.

Anyone reading this... just have Danny send your parts to Frederick and have him do it.  It's not expensive at all and more than covers the cost in value you'll get back out of it if you go to sell your speakers.  If you decide to sell your speakers and build something new, when you post pictures of this kind of work, your "DIY speakers" will easily sell...

Thank you. I appreciate it.

fre11111

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Hi Everybody,

I just wanted to share this photo of a before and after POLK AUDIO SDA-1 UPGRADE. The owner sent me all the parts for this speaker.

BEFORE



AFTER




Here is a project I am working on right now. It is a full assembly, crossover upgrade and install of a GR RESEARCH UPGRADE KIT for YAMAHA NS-1000



 


This project will take few days to build and hopefully I can post photos of the build. I have been doing more of these full installs lately and would like to share that it is not as easy as somebody would think. It takes alot of time to do it the properly and carefully.
Thank you and have a great weekend. Godbless.

Frederick

fre11111

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Hello fellow AC members,

I hope everyone had a great Mothers day. I have been busy with school and some projects and just wanted to post some photos.
























The Yamaha was a great project. It sounded really good too. I hope everone have a blessed day. Thank you.

Frederick
frederickdelrosario111@gmail.com




fre11111

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Hi Everyone,

Here a few more project photos.



High pass filter using Cardas connectors and Audionote Copper foil Caps.



SATORI ARA BE crossover with Mundorf Silver/Gold oil Caps.



 MERLIN VSM crossover using some DUELUND parts.
Thank you.

Frederick
frederickdelrosario111@gmail.com


uncola

Some great looking crossovers!  Always appreciate seeing them.  Gives me ideas for making mine neat and orderly

fre11111

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Some great looking crossovers!  Always appreciate seeing them.  Gives me ideas for making mine neat and orderly

Thank you.

Frederick

fre11111

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Hi Everyone,

I just wanted to post some recent photos of builds. I have not posted much since I have been doing more of the same crossovers.













This is a before and after of a KLIPSCH CORNWALL IV





ACOUSTIC RESEARCH CLASSIC 30



I hope everyone is having a great weekend. If anyone needs help with anything or just questions feel free to reach out. Thank you.

Frederick
frederickdelrosario111@gmail.com
Cell# 562-569-8662

yoniyama

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Did you see the recent review by Danny on the discrete op amp by Sparkos?

Both my SACD player (Sony XA-5400ES) and Blu-ray player (Oppo UDP-203) have discrete op amps that could be upgraded with the Sparkos discrete op amp.  However, I opened both machines and failed to locate where they are.

I am in Northern California, are you able to work on my disc players and replace the op amp? 

Hobbsmeerkat

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Did you see the recent review by Danny on the discrete op amp by Sparkos?

Both my SACD player (Sony XA-5400ES) and Blu-ray player (Oppo UDP-203) have discrete op amps that could be upgraded with the Sparkos discrete op amp.  However, I opened both machines and failed to locate where they are.

I am in Northern California, are you able to work on my disc players and replace the op amp?

Most gear that uses discrete op amps typically won't use socket-mounted chips that are easily swappable like Danny's DAC.
Most times, they are very small 8-pin chips and directly soldered to the circuit board near the outputs.
So even if you can identify them, replacing them will likely be very tricky, assuming there is even room for the larger Sparkos.