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DIY DIY amp club V2, Post your DIY amp here

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cent88
post Aug 13 2010, 12:30 AM

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From: Pearl of Orient

Need help here. where I can get a low power amplifier? limited budget due to already have home theater and this is for my bedroom only.

Item(s):
Low power amplifier for my Altec Lansing MX5021(amplifier is dead).
L/R 25w+25w, woofer 50w.
Requirements:
Class AB or D
active filter
low distortion
rca input, satelite out, subwoofer out.
toroidal transformer
swappable opamp/coupling capacitor.
minimum power 25w+25 and 50w, higher power is ok, so I can upgrade speaker next time but don't be too high(use in room only).
any well known brand or good quality DIY is ok.

or any better idea?

Price: RM200-500.

Dealing method: postage/COD

Location of buyer: Penang

Age of item: prefer new

---

Item(s) conditions: good
cent88
post Aug 23 2010, 03:28 AM

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From: Pearl of Orient

QUOTE(chchyong89 @ Aug 18 2010, 02:16 AM)
user posted image

my mini solid work for tonight tongue.gif
luckily it just ngam ngam feed 7 gnds(two signal in, two out, two amp, one psu) to form star ground.
*
what is the purpose? sad.gif
filter noise?
cent88
post Aug 30 2010, 12:34 PM

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From: Pearl of Orient

some of the semicond can get it free as sample from the manufacturer but with limited quantity.

This post has been edited by cent88: Aug 30 2010, 12:35 PM
cent88
post Sep 21 2010, 02:26 AM

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From: Pearl of Orient

usually what kind of wire you guys use in the amp for signal path?
PCB to RCA in/out and speaker in/out?
cent88
post Sep 21 2010, 12:26 PM

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From: Pearl of Orient

how about Canare L2T2S or solid core is better for RCA?
I see there are a lot of comparison and review around the net but without a good conclusion. They said Canare is 1 of the best interconnect while solid core is the best too as it has lower capacitance.

for speaker input/output also use thicker solid core AWG?

any good performance to price ratio solid core to recommend?
like pure copper or...
cent88
post Sep 23 2010, 09:21 PM

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From: Pearl of Orient

@vir___killer: where can I get the OCC and PCOCC cable locally?

@kww: stranded really easier for installation. I broke solid core cable before, just slightly bend it only. doh.gif

@nanhifi: I also plan to replace the crossover pcb with wiring only.

@LittleGhost: currently I'm using Mitti High Resolution Silver Coated Copper cable but don't know how is the quality of material. RM5/meter only. sweat.gif
cent88
post Sep 23 2010, 11:45 PM

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From: Pearl of Orient

oh. then the boss cheated me, simply told me it is silver.
nevermind lar, rm5 only. tongue.gif
cent88
post Oct 25 2010, 10:14 PM

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From: Pearl of Orient

need little help here. I'm suspecting my AC lines creating interference to DC circuit, there is already a ferrite choke on AC wire but 'zzzzzzz' sound still coming out.
twisted pair or ferrite choke is more effective? space limited, not able to use both.
actually twisted pair and ferrite choke is prevent interference or also prevent create interfere to others?
cent88
post Oct 25 2010, 10:32 PM

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From: Pearl of Orient

-deleted-

This post has been edited by cent88: Oct 29 2010, 01:01 PM

 

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