4 channel conversion to mono 1 channel

[iUSERTLO72p]

[djQUAN]

I don't think you could squeeze more than about 200 watts off that power supply.

the transformer has a 6T:12T primary to secondary turns so that means about 25V secondary supply voltage.

you're probably getting about 50watts cont x 4 at 4ohms or about 200watts cont x 2 at 4ohms bridged.

I don't think you could change the power output much since it is already maxed out. as for sound quality, you might as well build a new amp from scratch since you would replace many parts or redesign the amplifier section.

I'm not trying to discourage you, just letting you know what you're going to get into.

[iUSERTLO72p]

A Maystar QX series QXT455
2 ohm stable
rms@13.8vdc
4 x 50w @ 4ohms
4 x 75w @ 2ohms
bridged @ 4ohms 150w x 2

[iUSERTLO72p]

Hello again,

Looking at Rods amp, I could run that off of it, at a reduced power output. Would it sound better with his amp???

I can't even slide the bl**dy board out! Those clamps and the heatsink compound must have it locked tight.

I have heard a JBL GTO at the same power sound warm in the bass, where as this sounded thin and dry. Thats why I was curious about being able to do this. I'm assuming the JBL to be a better amp, it was a GTO somthing or other.

Cheers

iUSERTLO72p

[djQUAN]

you could try and use a separate active crossover. most cheap amps use crappy crossovers which do things that doesn't have anything to do with the markings on the amp.

run that amp in full range mode then use a good quality active crossover unit. you might hear some improvement.

[iUSERTLO72p]

Okay, I'll look for a xover then, maybe a Linkwitz 24db.
The amp reckons Variable18db @45hz bass boost, hmm yeah right and then each xover does it at 12db, lowpass 30 through 250 hz.

What would a sensible amp have, If I rebuild this stage, how elaborate can I go? What do the best audiophiles use?

Cheers

iUSERTLO72p

[djQUAN]

I have made car amps using P3A with great results. much better than cheap amps.

also, an explanation to the better sounding JBL amp is that it is more expensive and most probably higher power.

[zeonrider]

This is very small car, like mine ( Renault Twingo ).

I have in the trunk 12" double coil SW. (2x4Ohm.), powered with Pioneer GM 1200.
When I, put in max. HU. I, can't breathe.
Put in parallel in/out and one 15" SW.,you'll never have neighbour any more.

Regards zeoN_Rider

[iUSERTLO72p]

Hi djQUAN, Would adding a P3A be better than the maystar? Maybe 2 in bridge mode,courtesy of P14 and project 09 front end, to do the filtering.
zeonrider, my neighbour is likely to torch my ride!


Quality only

Cheers

iUSERTLO72p

[zeonrider]

I, think that " KKK" , doesn't exist in UK.

My neighbour wan't to catch with me because more cars I, equiped with sound on my parking line.

Regards zeoN_Rider