Jump to content
Why become a member? ×

samej

Member
 View Profile  See their activity

  • Posts

    33

  • Joined

  • Last visited

samej's Achievements

Newbie

Newbie (1/14)

0

Total Watts

  1. samej
    It's a 20 W 10 ohm resistor. It's just a cement thing with no heatsink. My rough calculations suggest that if the speaker is using 300W the resistor will produce about 0.006 W @ 1000Hz and 1.4 W @ 25 KHz. I've assumed the woofers impedance stays at 8 ohm. I have 2 tweeters in series with the resistor, and that is all parallel to the woofer. The tweeters are 1kohm @ 1 KHz and 60 ohm @ 25 KHz. I guess to achieve that power the cab as a whole will be being driven pretty hard. Certainly as a bass cab it shouldn't be an issue, but as a PA speaker it might, particularly with loud recorded music? Even still 1.4 W isn't much.... edit for resistor wattage correction
  2. samej
    I'll try mounting it off some stripboard. It has no mounting holes on the resistor. I've now decided I don't think it will get very hot so it's more the mechanical aspect I guess. I'll try it for a while and see if it does get hot. Cheers
  3. samej
    Hi, I'm building a cab with peizo tweeters, and it seems to be recommended to add a power resistor to protect some amps from the low impedance at very high frequencies. I presume that because the resistor is very low resistance compared to the tweeters high impedance at normal frequencies (where there is some power), that it doesn't get very hot and can be mounted, for example directly to the plywood with cable ties. Or is this a bad idea? Should i use a heat sink or mount it away from anything that might burn? If so any recommended method? On stripboard? I haven't really been able to find anything discussing this. Thanks
  4. samej
    Valentines day bump! Lonely little amp wants good home!
  5. samej
    bump for reduced price.
  6. samej
    bump
  7. samej
    [quote name='Uberkate' post='732990' date='Feb 2 2010, 02:35 PM']Hi there. Is this amp alright for gigging? (Small/pub venues mainly.) I have quite a small budget but need to pick something up for practises and an upcoming tour (I'm a new bassist really.)[/quote] Hi, I've used it for a few pub gigs with no problems, though to be honest it does seem fairly quiet given it's stated 350W. Apparently the preamp is a little weak, and when I've plugged in a little mixer to the line in (i.e. bypassing the pre, using it just as a power amp) it's had plenty of volume. I do tend to play very gently and think my bass has quite a low output too. And, as with any amp, it depends more on the cab you use it with than anything else though.... If you are near Bristol, let me know if you want to come and try it out. James
  8. samej
    bump
  9. samej
    Hello, I have a Little Giant 350 for sale. Excellent condition. There are a few scratches on the base where it has rested on the screws of a cab. The plastic film fascia covering is still mostly attached because I never bothered to take it off. It's in the original box with the manual, rack ears and screws still in their wrapping, and a kettle lead. Looking for [b]£150[/b]. Would prefer collection but if you want it posted then express your interest and I'll look into it. I'm in Bristol, fairly central. Edit: Forgot to say I might be interested in a swap (+cash if necessary) for an audio interface - looking for something with 8 mic pres and adat ideally, either firewire or pci. Cheers James [attachment=41488:dsc_0354.jpg] [attachment=41489:dsc_0356.jpg] [attachment=41487:dsc_0353.jpg] Edit for reduced price.
  10. samej
    Also I really like the contemporary jazz trios and they often have amazing bassists. Saw the Bad Plus recently and Reid Anderson was superb. Also check out the Esbjorn Svensson Trio, and Brad Mehldau Trio. Might be worth trying to have a listen on youtube / spotify before you splash the cash though, they are all quite different.
  11. samej
    Avishai Cohen (not the trumpeter of the same name).
  12. samej
    The preamp output specs are: OUTPUTS • Line Output: Nominal 0.5V RMS @ 100 Ohms • Balanced Output via XLR : Nominal 1.0V RMS @100 Ohms Electronically Balanced And the XLS input sensitivity is 1.25V for full power. I suspect that 0.25V can make quite a difference, but I don't really know. The distortion will almost certainly be the preamp not the power amp. You can happily send an underpowered distorted signal to the power amp. Maybe someone else will be along with a better answer soon.. 600W should be plenty.
  13. samej
    I would guess the preamp doesn't provide enough output signal to fully drive the power amp. Despite the name, many instrument preamps aren't designed to be plugged directly into a power amp requiring a pro-audio level signal. Which is pretty annoying! If you have access to a mixer you could put that between the pre and power amps and set the level on that to provide a full signal to the power amp (0dB on the meter I think) and see if that makes a difference. If so then that is the problem.
  14. samej
    [quote name='EssentialTension' post='599494' date='Sep 15 2009, 06:48 PM']What's scale length on a baritone uke? These are 20". Would the poly strings fit through the tuners on a baritone uke?[/quote] A quick google suggests 19" for a normal baritone, although some pages say just over 20. Close enough either way I reckon. You might have to change the tuners or attack them with a file. And the bridge too. Still, I'm quite tempted myself!
  15. samej
    Could you not just get a Baritone Uke and put some silicone or polyurethane strings on it for the same effect for much less money?
×
×
  • Create New...